�??xml version="1.0" encoding="utf-8" standalone="yes"?><rss version="2.0" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:trackback="http://madskills.com/public/xml/rss/module/trackback/" xmlns:wfw="http://wellformedweb.org/CommentAPI/" xmlns:slash="http://purl.org/rss/1.0/modules/slash/"><channel><title>&#19968;&#21306;&#20108;&#21306;&#19977;&#21306;&#46;&#119;&#119;&#119;&#44;&#31105;&#26029;&#19968;&#21306;&#20108;&#21306;&#19977;&#21306;&#22312;&#32447;&#44;&#23159;&#23159;&#22269;&#20135;&#22312;&#32447;</title><link>http://www.aygfsteel.com/terrywu/category/11704.html</link><description /><language>zh-cn</language><lastBuildDate>Fri, 23 Mar 2007 11:23:24 GMT</lastBuildDate><pubDate>Fri, 23 Mar 2007 11:23:24 GMT</pubDate><ttl>60</ttl><item><title>jfreecahrt1.0 中文API </title><link>http://www.aygfsteel.com/terrywu/articles/105618.html</link><dc:creator>吴志�?/dc:creator><author>吴志�?/author><pubDate>Thu, 22 Mar 2007 10:06:00 GMT</pubDate><guid>http://www.aygfsteel.com/terrywu/articles/105618.html</guid><wfw:comment>http://www.aygfsteel.com/terrywu/comments/105618.html</wfw:comment><comments>http://www.aygfsteel.com/terrywu/articles/105618.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/terrywu/comments/commentRss/105618.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/terrywu/services/trackbacks/105618.html</trackback:ping><description><![CDATA[jfreechart<br /><br /><br />jfreechart目前最高版本�ؓ1.0.0�?http://www.jfree.org/jfreechart/index.html)。可以绘�?br />pie charts 饼图,bar charts ��q���?line and area charts曲线�?scatter plots and bubble charts 散列�?time series 时序�?Area Charts区域�?Difference Chart差异�?Step Chart步骤�?Multiple Axis Charts 混合�?Gantt charts甘特图，combination charts 复合�?br />JFreeChart核心�c�d��介绍�Q?br />jfreechart主要�׃��个大的包�l�成�Q�org.jfree.chart,org.jfree.data。其中前者主要与囑�Ş<br />本��n有关�Q�后者与囑�Ş昄���的数据有兟�?br />核心�c�M��要有�Q?br />org.jfree.chart.JFreeChart�Q�图表对象，��M���c�d��的图表的最�l�表现�Ş式都是在该对象进行一些属性的定制。JFreeChart引擎本��n提供了一个工厂类用于创徏不同�c�d��的图表对�?br />org.jfree.data.category.XXXDataSet:数据集对象，用于提供昄���图表所用的数据。根据不同类型的图表对应着很多�c�d��的数据集对象�c?br />org.jfree.chart.plot.XXXPlot�Q�图表区域对象，基本上这个对象决定着什么样式的图表�Q�创�����对象的时候需要Axis、Renderer以及数据集对象的支持<br />org.jfree.chart.axis.XXXAxis�Q�用于处理图表的两个��_���U���u和横�?br />org.jfree.chart.render.XXXRender�Q�负责如何显�C�Z��个图表对�?br />org.jfree.chart.urls.XXXURLGenerator:用于生成Web图表中每个项目的鼠标点击链接<br />XXXXXToolTipGenerator:用于生成图象的帮助提�C�，不同�c�d��图表对应不同�c�d��的工��h���C�类<br />对于常用的饼��N����q��图，比较���单而且�|�上有很多的文章介绍�Q�在�q�里��׃��再一一复述了，<br />(可以参考这���文章http://www-128.ibm.com/developerworks/cn/java/l-jfreechart/index.html?ca=dwcn-isc&amp;me=ccid�Q?br />主要说明下另一�U�常见的报表�Q�时序图�Q�首先声明一个曲�U�数据集合对象和曲线对象<br /><br />TimePeriodValuesCollection timeseriescollection = new TimePeriodValuesCollection();<br />//声明具体是曲�U�对象，(可根据实际情况在同一张图中显�C�多条曲�U�进行数据比对，�Ҏ��实际应用情况当超�q?条曲�U�时�Q�就会有些�ؕ�?<br />TimePeriodValues timeperiod1 = new TimePeriodValues("服务器A在线用户数量");<br />TimePeriodValues timeperiod2 = new TimePeriodValues("服务器B在线用户数量");<br />我在使用TimeSeriesCollection tsc = new TimeSeriesCollection();<br />TimeSeries ts = new TimeSeries();<br />在生成数据集�Ӟ��ts.add(new Day(day, month, year),10))�Q�只能生成最���单位�ؓ天的横��u所以改用了TimePeriodValuesCollection <br />//�Ҏ��当前旉���取得横��u坐标�Q�时间间隔�ؓ1���时<br />Calendar cal = Calendar.getInstance();<br />int year = cal.get(Calendar.YEAR);<br />int month = cal.get(Calendar.MONTH) + 1;<br />int day = cal.get(Calendar.DAY_OF_MONTH);<br />//�q�里改�ؓ�Ҏ��自己�E�序得到的需要显�C�的旉���点和对应的数据的集合;<br />List objectList1 = dao.getList1();<br />List objectList2 = dao.getList2();<br />//使用循环�Q�把x��_��y轴的��D���l�timeseries1<br />for (int i =0;i&lt;objecthash1.size();i++) {<br />    int hour = objecthash1[i].getHours();<br />    int count = objecthash1[i].getCount();<br /> //���每一�Ҏ��据（旉����Q�数��|����d��到数据集�?(曲线对象1)�?br />    timeseries1.add(new Hour(hour, day, month, year),count);<br />}<br />for (int i =0;i&lt;objecthash2.size();i++) {<br />    int hour = objecthash2[i].getHours();<br />    int count = objecthash2[i].getCount();<br /> //���每一�Ҏ��据（旉����Q�数��|����d��到数据集�?(曲线对象2)�?br />    timeseries2.add(new Hour(hour, day, month, year),count);<br />}<br />//���曲�U�对象添加到曲线数据集合对象�?br />timeseriescollection.addSeries(timeseries1);<br />timeseriescollection.addSeries(timeseries2);<br />//�l�制报表<br />String title = "日在�U�用��L���?; //报表标题<br />String domain = "旉���";    //x�?br />String range = "用户在线数量";   //y�?br />//创徏旉���序列囑֯��?br />JFreeChart chart = ChartFactory.createTimeSeriesChart(<br />title,  //报表标题<br />domain, //报表横��u标签<br />range,  //报表�U���u标签<br />timeseriescollection, //数据集合<br />true,  //是否昄���图例,在这里如果�ؓtrue则会在图表的下方昄���各条数据曲线的名�U�和颜色<br />false, // 是否生成工具<br />false   // 是否生成URL链接);<br />//���报表保存�ؓjpg文�g<br />ChartUtilities.saveChartAsJPEG(file, //文�g保存物理路径包括路径和文件名<br />100,   //囄���质量<br />chart, //图表对象<br />1024,  //囑փ�宽度<br />768,   //囑փ�高度<br />null); //昄���信息<br />//���报表直接在��面输出<br />ChartUtilities.writeChartAsJPEG(res.getOutputStream(),100,chart,1024,768,null);<br /><br />String title="月在�U�用��L���?;  //标题<br />String domain="旉���(�?";//x�?br />String range="用户在线数量";//y�?<br />TimePeriodValuesCollection   timeseriescollection   =   new   TimePeriodValuesCollection();<br />TimePeriodValues timeseries = new TimePeriodValues( "用户数量");<br /> timeseries.add(new Minute(0, 1, 1, 1, 2006), 100);<br /> timeseries.add(new Minute(10, 1, 1, 1, 2006), 500);<br /> timeseries.add(new Minute(20, 1, 1, 1, 2006), 300);<br /> timeseries.add(new Minute(30, 1, 1, 1, 2006), 800);<br />JFreeChart chart =ChartFactory.createTimeSeriesChart(title,domain,range,timeseriescollection,true,false,false);<br />当我们生成了一个报表对象时�Q�可能需要根据实际情冉|��军_��报表的横轴和�U���u的数值间隔，昄���方式�{��?br />可以用XYPlot xyplot = (XYPlot)chart.getPlot();来得到所有数据点的集合。（其它形状图表得到的数据集对象�Ҏ��实际情况造型�Q?br />得到数据炚w��合后�Q�我们就可以讄���各条曲线的颜�Ԍ��和坐标��u的距���，x轴、y轴的昄���方式�{�等属�?br />xyplot.setBackgroundPaint(Color.lightGray); //讑֮�图表数据昄���部分背景�?br />xyplot.setAxisOffset(new RectangleInsets(5D, 5D, 5D, 5D)); //讑֮�坐标轴与图表数据昄���部分距离<br />xyplot.setDomainGridlinePaint(Color.white); //�|�格�U�纵向颜�?br />xyplot.setRangeGridlinePaint(Color.white); //�|�格�U�横向颜�?br />数据点的调整<br />XYLineAndShapeRenderer xylineandshaperenderer = (XYLineAndShapeRenderer)xyplot.getRenderer();<br />xylineandshaperenderer.setDefaultShapesVisible(true);  //数据点可�?br />xylineandshaperenderer.setSeriesFillPaint(0, Color.red);  //讄����W�一条曲�U�数据点填充为红�Ԍ��如果一个图表有多条曲线可分别设�|?br />xylineandshaperenderer.setUseFillPaint(true);    //应用<br /><br />使用xyplot.getRangeAxis()得到�U���u�Q�xyplot.getDomainAxis()得到横��u�Q�得到后可以�Ҏ��实际情况造型�����己所需要的�c�d���?br />我的图表�U���u为数值类型，横��u为时间类型，使用如下方式<br />NumberAxis numAxis = (NumberAxis)xyplot.getRangeAxis();<br />DateAxis  dateaxis =   (DateAxis)xyplot.getDomainAxis();<br />//讄���y昄���方式<br />numAxis.setAutoTickUnitSelection(false);//数据轴的数据标签是否自动���定<br />double  rangetick = 0.1D;<br />numAxis.setTickUnit(new NumberTickUnit(rangetick));  //y轴单位间隔�ؓ0.1<br />//讄���x轴显�C�方�?br />dateaxis.setAutoTickUnitSelection(false);//数据轴的数据标签是否自动���定<br />dateaxis.setTickUnit(new DateTickUnit(DateTickUnit.DAY,1));//x轴单位间隔�ؓ1�?br />我们�q�可以是���数据格式化以后昄����Q�比如y轴显�C�百分比�Q?0%�?00%�Q?x轴显�C�Zؓ×月×日<br />NumberFormat nf =NumberFormat.getPercentInstance();<br />numAxis.setNumberFormatOverride(nf);//讄���y轴以癑ֈ�比方式显�C?br />SimpleDateFormat format = new SimpleDateFormat("MM月dd");<br />dateaxis.setDateFormatOverride(format);//讄���x轴数据单位以×月×日方式昄���<br />时序图中�q�有一个很重要的方�?br />timeseriescollection.setDomainIsPointsInTime(true); //x轴上的刻度点代表的是旉���点而不是时间段<br />最开始我没有讄����q�个属�?�l�果��d��来的图，老是差半��g��能在�q�个��d��的时候准���显�C�，往后移了半��|�����是因�ؓJFreeChart默认�q�个��d���?br />一个时间段�Q�它把这个刻度和下个��d��的中间点认�ؓ是显�C�数据点最佳位�|��?br /><br />其他一些关于AXIS�cȝ���Ҏ���Q?br />Axis�c�：<br />void setVisible(boolean flag)坐标轴是否可�?br />void setAxisLinePaint(Paint paint)坐标轴线条颜�Ԍ��3D轴无效）<br />void setAxisLineStroke(Stroke stroke)坐标轴线条笔触（3D轴无效）<br />void setAxisLineVisible(boolean visible)坐标轴线条是否可见（3D轴无效）<br />void setFixedDimension(double dimension)�Q�用于复合表中对多坐标��u的设�|�）<br />void setLabel(String label)坐标轴标�?br />void setLabelFont(Font font)坐标轴标题字�?br />void setLabelPaint(Paint paint)坐标轴标题颜�?br />void setLabelAngle(double angle)`坐标轴标题旋转角度（�U�坐标可以旋转）<br />void setTickLabelFont(Font font)坐标轴标���值字�?br />void setTickLabelPaint(Paint paint)坐标轴标���值颜�?br />void setTickLabelsVisible(boolean flag)坐标轴标���值是否显�C?br />void setTickMarkPaint(Paint paint)坐标轴标���颜�?br />void setTickMarkStroke(Stroke stroke)坐标轴标���笔�?br />void setTickMarksVisible(boolean flag)坐标轴标���是否显�C?br />ValueAxis(Axis)�c�：<br />void setAutoRange(boolean auto)自动讄���数据轴数据范�?br />void setAutoRangeMinimumSize(double size)自动讄���数据轴数据范围时数据范围的最���跨�?br />void setAutoTickUnitSelection(boolean flag)数据轴的数据标签是否自动���定�Q�默认�ؓtrue�Q?br />void setFixedAutoRange(double length)数据轴固定数据范��_��讄���100的话���是昄���MAXVALUE到MAXVALUE-100那段数据范围�Q?br />void setInverted(boolean flag)数据轴是否反向（默认为false�Q?br />void setLowerMargin(double margin)数据轴下�Q�左�Q�边�?br />void setUpperMargin(double margin)数据轴上�Q�右�Q�边�?br />void setLowerBound(double min)数据轴上的显�C�最����?br />void setUpperBound(double max)数据轴上的显�C�最大�?br />void setPositiveArrowVisible(boolean visible)是否昄���正向���头�Q?D轴无效）<br />void setNegativeArrowVisible(boolean visible)是否昄���反向���头�Q?D轴无效）<br />void setVerticalTickLabels(boolean flag)数据轴数据标�{�是否旋转到垂直<br />void setStandardTickUnits(TickUnitSource source)数据轴的数据标签�Q�可以只昄���整数标签�Q�需要将AutoTickUnitSelection设false�Q?br />NumberAxis(ValueAxis)�c�：<br />void setAutoRangeIncludesZero(boolean flag)是否强制在自动选择的数据范围中包含0<br />void setAutoRangeStickyZero(boolean flag)是否强制在整个数据��u中包�?�Q�即�?不在数据范围�?br />void setNumberFormatOverride(NumberFormat formatter)数据轴数据标�{����昄���格式<br />void setTickUnit(NumberTickUnit unit)数据轴的数据标签�Q�需要将AutoTickUnitSelection设false�Q?br />DateAxis(ValueAxis)�c�：<br />void setMaximumDate(Date maximumDate)日期轴上的最���日�?br />void setMinimumDate(Date minimumDate)日期轴上的最大日�?br />void setRange(Date lower,Date upper)日期轴范�?br />void setDateFormatOverride(DateFormat formatter)日期轴日期标�{����昄���格式<br />void setTickUnit(DateTickUnit unit)日期轴的日期标签�Q�需要将AutoTickUnitSelection设false�Q?br />void setTickMarkPosition(DateTickMarkPosition position)日期标签位置�Q�参数常量在org.jfree.chart.axis.DateTickMarkPosition�c�M��定义�Q?br />CategoryAxis(Axis)�c�：<br />void setCategoryMargin(double margin)分类轴边�?br />void setLowerMargin(double margin)分类轴下�Q�左�Q�边�?br />void setUpperMargin(double margin)分类轴上�Q�右�Q�边�?br />void setVerticalCategoryLabels(boolean flag)分类轴标题是否旋转到垂直<br />void setMaxCategoryLabelWidthRatio(float ratio)分类轴分�c�L���{����最大宽�?br />jfreechart 讄���技�?br /><br />1.横坐标内容竖�? <br />      XYPlot xyplot = jfreechart.getXYPlot();<br />        DateAxis dateaxis = (DateAxis)xyplot.getDomainAxis();<br />        dateaxis.setTickUnit(new DateTickUnit(1, 1, new SimpleDateFormat("MMM-yyyy")));<br />        dateaxis.setVerticalTickLabels(true);<br /><br />2.讄���最大坐标范�?br /> 1�Q�ValueAxis axis = xyplot.getRangeAxis() ;<br />       axis.setRange(0,100) ;<br />       xyplot.setRangeAxis(axis); <br /><br />  2�Q�numberaxis1.setUpperBound(6500D);//最大�?br />     numberaxis1.setLowerBound(5500D);//最����?br />2.讄���旉���轴的间隔旉���<br />    dateaxis.setTickUnit(new DateTickUnit(DateTickUnit.DAY,1));//讄���旉���间隔��Z���?br />学JFreeChart不得不看的中文API<br /><br />JFreeChart�c�：<br />void setAntiAlias(boolean flag)字体模糊边界<br />void setBackgroundImage(Image image)背景囄���<br />void setBackgroundImageAlignment(int alignment)背景囄���寚w��方式�Q�参数常量在org.jfree.ui.Align�c�M��定义�Q?br />void setBackgroundImageAlpha(float alpha)背景囄���透明度（0.0�?.0�Q?br />void setBackgroundPaint(Paint paint)背景�?br />void setBorderPaint(Paint paint)边界�U�条颜色<br />void setBorderStroke(Stroke stroke)边界�U�条�W�触<br />void setBorderVisible(boolean visible)边界�U�条是否可见<br /><br />-----------------------------------------------------------------------------------------------------------<br /><br />TextTitle�c�：<br />void setFont(Font font)标题字体<br />void setPaint(Paint paint)标题字体颜色<br />void setText(String text)标题内容<br /><br />-----------------------------------------------------------------------------------------------------------<br /><br />StandardLegend(Legend)�c�：<br />void setBackgroundPaint(Paint paint)囄���背景�?br />void setTitle(String title)囄���标题内容<br />void setTitleFont(Font font)囄���标题字体<br />void setBoundingBoxArcWidth(int arcWidth)囄���边界圆角�?br />void setBoundingBoxArcHeight(int arcHeight)囄���边界圆角�?br />void setOutlinePaint(Paint paint)囄���边界�U�条颜色<br />void setOutlineStroke(Stroke stroke)囄���边界�U�条�W�触<br />void setDisplaySeriesLines(boolean flag)囄�����Ҏ��否显�C�横�U�（折线图有效）<br />void setDisplaySeriesShapes(boolean flag)囄�����Ҏ��否显�C��Ş�Ӟ��折线图有效）<br />void setItemFont(Font font)囄�����字�?br />void setItemPaint(Paint paint)囄�����字体颜�?br />void setAnchor(int anchor)囄���在图表中的显�C�Z���|�（参数帔R��在Legend�c�M��定义�Q?br /><br />Axis�c�：<br />void setVisible(boolean flag)坐标轴是否可�?br />void setAxisLinePaint(Paint paint)坐标轴线条颜�Ԍ��3D轴无效）<br />void setAxisLineStroke(Stroke stroke)坐标轴线条笔触（3D轴无效）<br />void setAxisLineVisible(boolean visible)坐标轴线条是否可见（3D轴无效）<br />void setFixedDimension(double dimension)�Q�用于复合表中对多坐标��u的设�|�）<br />void setLabel(String label)坐标轴标�?br />void setLabelFont(Font font)坐标轴标题字�?br />void setLabelPaint(Paint paint)坐标轴标题颜�?br />void setLabelAngle(double angle)`坐标轴标题旋转角度（�U�坐标可以旋转）<br />void setTickLabelFont(Font font)坐标轴标���值字�?br />void setTickLabelPaint(Paint paint)坐标轴标���值颜�?br />void setTickLabelsVisible(boolean flag)坐标轴标���值是否显�C?br />void setTickMarkPaint(Paint paint)坐标轴标���颜�?br />void setTickMarkStroke(Stroke stroke)坐标轴标���笔�?br />void setTickMarksVisible(boolean flag)坐标轴标���是否显�C?br /><br />ValueAxis(Axis)�c�：<br />void setAutoRange(boolean auto)自动讄���数据轴数据范�?br />void setAutoRangeMinimumSize(double size)自动讄���数据轴数据范围时数据范围的最���跨�?br />void setAutoTickUnitSelection(boolean flag)数据轴的数据标签是否自动���定�Q�默认�ؓtrue�Q?br />void setFixedAutoRange(double length)数据轴固定数据范��_��讄���100的话���是昄���MAXVALUE到MAXVALUE-100那段数据范围�Q?br />void setInverted(boolean flag)数据轴是否反向（默认为false�Q?br />void setLowerMargin(double margin)数据轴下�Q�左�Q�边�?br />void setUpperMargin(double margin)数据轴上�Q�右�Q�边�?br />void setLowerBound(double min)数据轴上的显�C�最����?br />void setUpperBound(double max)数据轴上的显�C�最大�?br />void setPositiveArrowVisible(boolean visible)是否昄���正向���头�Q?D轴无效）<br />void setNegativeArrowVisible(boolean visible)是否昄���反向���头�Q?D轴无效）<br />void setVerticalTickLabels(boolean flag)数据轴数据标�{�是否旋转到垂直<br />void setStandardTickUnits(TickUnitSource source)数据轴的数据标签�Q�可以只昄���整数标签�Q�需要将AutoTickUnitSelection设false�Q?br /><br />NumberAxis(ValueAxis)�c�：<br />void setAutoRangeIncludesZero(boolean flag)是否强制在自动选择的数据范围中包含0<br />void setAutoRangeStickyZero(boolean flag)是否强制在整个数据��u中包�?�Q�即�?不在数据范围�?br />void setNumberFormatOverride(NumberFormat formatter)数据轴数据标�{����昄���格式<br />void setTickUnit(NumberTickUnit unit)数据轴的数据标签�Q�需要将AutoTickUnitSelection设false�Q?br /><br />DateAxis(ValueAxis)�c�：<br />void setMaximumDate(Date maximumDate)日期轴上的最���日�?br />void setMinimumDate(Date minimumDate)日期轴上的最大日�?br />void setRange(Date lower,Date upper)日期轴范�?br />void setDateFormatOverride(DateFormat formatter)日期轴日期标�{����昄���格式<br />void setTickUnit(DateTickUnit unit)日期轴的日期标签�Q�需要将AutoTickUnitSelection设false�Q?br />void setTickMarkPosition(DateTickMarkPosition position)日期标签位置�Q�参数常量在org.jfree.chart.axis.DateTickMarkPosition�c�M��定义�Q?br /><br />CategoryAxis(Axis)�c�：<br />void setCategoryMargin(double margin)分类轴边�?br />void setLowerMargin(double margin)分类轴下�Q�左�Q�边�?br />void setUpperMargin(double margin)分类轴上�Q�右�Q�边�?br />void setVerticalCategoryLabels(boolean flag)分类轴标题是否旋转到垂直<br />void setMaxCategoryLabelWidthRatio(float ratio)分类轴分�c�L���{����最大宽�?br /><br />AbstractRenderer�c�：<br />void setItemLabelAnchorOffset(double offset)数据标签的与数据点的偏移<br />void setItemLabelsVisible(boolean visible)数据标签是否可见<br />void setItemLabelFont(Font font)数据标签的字�?br />void setItemLabelPaint(Paint paint)数据标签的字体颜�?br />void setItemLabelPosition(ItemLabelPosition position)数据标签位置<br />void setPositiveItemLabelPosition(ItemLabelPosition position)正数标签位置<br />void setNegativeItemLabelPosition(ItemLabelPosition position)负数标签位置<br />void setOutLinePaint(Paint paint)囑�Ş�Ҏ��的线条颜�?br />void setOutLineStroke(Stroke stroke)囑�Ş�Ҏ��的线条笔�?br />void setPaint(Paint paint)所有分�c�d��形的颜色<br />void setShape(Shape shape)所有分�c�d��形的形状�Q�如折线囄���点）<br />void setStroke(Stroke stroke)所有分�c�d��形的�W�触�Q�如折线囄����U�）<br />void setSeriesItemLabelsVisible(int series,boolean visible)指定分类的数据标�{�是否可�?br />void setSeriesItemLabelFont(int series,Font font)指定分类的数据标�{����字体<br />void setSeriesItemLabelPaint(int series,Paint paint)指定分类的数据标�{����字体颜色<br />void setSeriesItemLabelPosition(int series,ItemLabelPosition position)数据标签位置<br />void setSeriesPositiveItemLabelPosition(int series,ItemLabelPosition position)正数标签位置<br />void setSeriesNegativeItemLabelPosition(int series,ItemLabelPosition position)负数标签位置<br />void setSeriesOutLinePaint(int series,Paint paint)指定分类的图形边框的�U�条颜色<br />void setSeriesOutLineStroke(int series,Stroke stroke)指定分类的图形边框的�U�条�W�触<br />void setSeriesPaint(int series,Paint paint)指定分类囑�Ş的颜�?br />void setSeriesShape(int series,Shape shape)指定分类囑�Ş的�Ş�Ӟ��如折�U�图的点�Q?br />void setSeriesStroke(int series,Stroke stroke)指定分类囑�Ş的笔触（如折�U�图的线�Q?br /><br />AbstractCategoryItemRenderer(AbstractRenderer)�c�：<br />void setLabelGenerator(CategoryLabelGenerator generator)数据标签的格�?br />void setToolTipGenerator(CategoryToolTipGenerator generator)MAP中鼠标移上的昄���格式<br />void setItemURLGenerator(CategoryURLGenerator generator)MAP中钻取链接格�?br />void setSeriesLabelGenerator(int series,CategoryLabelGenerator generator)指定分类的数据标�{����格式<br />void setSeriesToolTipGenerator(int series,CategoryToolTipGenerator generator)指定分类的MAP中鼠标移上的昄���格式<br />void setSeriesItemURLGenerator(int series,CategoryURLGenerator generator)指定分类的MAP中钻取链接格�?br /><br />BarRenderer(AbstractCategoryItemRenderer)�c�：<br />void setDrawBarOutline(boolean draw)是否��d��形边�?br />void setItemMargin(double percent)每个BAR之间的间�?br />void setMaxBarWidth(double percent)每个BAR的最大宽�?br />void setMinimumBarLength(double min)最短的BAR长度�Q�避免数值太���而显�C�Z���?br />void setPositiveItemLabelPositionFallback(ItemLabelPosition position)无法在BAR中显�C�的正数标签位置<br />void setNegativeItemLabelPositionFallback(ItemLabelPosition position)无法在BAR中显�C�的负数标签位置<br /><br />BarRenderer3D(BarRenderer)�c�：<br />void setWallPaint(Paint paint)3D坐标轴的墙体颜色<br /><br />StackedBarRenderer(BarRenderer)�c�：<br />没有�Ҏ��的设�|?br /><br />StackedBarRenderer3D(BarRenderer3D)�c�：<br />没有�Ҏ��的设�|?br /><br />GroupedStackedBarRenderer(StackedBarRenderer)�c�：<br />void setSeriesToGroupMap(KeyToGroupMap map)���分�c�自��q��映射成若�q�个�l�（KeyToGroupMap.mapKeyToGroup(series,group)�Q?br /><br />LayeredBarRenderer(BarRenderer)�c�：<br />void setSeriesBarWidth(int series,double width)讑֮�每个分类的宽度（注意讄���不要使某分类被覆盖）<br /><br />WaterfallBarRenderer(BarRenderer)�c�：<br />void setFirstBarPaint(Paint paint)�W�一个柱囄���颜色<br />void setLastBarPaint(Paint paint)最后一个柱囄���颜色<br />void setPositiveBarPaint(Paint paint)正值柱囄���颜色<br />void setNegativeBarPaint(Paint paint)负值柱囄���颜色<br /><br />IntervalBarRenderer(BarRenderer)�c�：<br />需要传IntervalCategoryDataset作�ؓ数据�?br /><br />GanttBarRenderer(IntervalBarRenderer)�c�：<br />void setCompletePaint(Paint paint)完成�q�度颜色<br />void setIncompletePaint(Paint paint)未完成进度颜�?br />void setStartPercent(double percent)讄����q�度条在整条中的起始位置�Q?.0�?.0�Q?br />void setEndPercent(double percent)讄����q�度条在整条中的�l�束位置�Q?.0�?.0�Q?br /><br />StatisticBarRenderer(BarRenderer)�c�：<br />需要传StatisticCategoryDataset作�ؓ数据�?br /><br />LineAndShapeRenderer(AbstractCategoryItemRenderer)�c�：<br />void setDrawLines(boolean draw)是否折线的数据点之间用线�q?br />void setDrawShapes(boolean draw)是否折线的数据点�Ҏ��分类使用不同的�Ş�?br />void setShapesFilled(boolean filled)所有分�c�L��否填充数据点囑�Ş<br />void setSeriesShapesFilled(int series,boolean filled)指定分类是否填充数据点图�?br />void setUseFillPaintForShapeOutline(boolean use)指定是否填充数据点的Paint也被用于��L��据点形状的边�?br /><br />LevelRenderer(AbstractCategoryItemRenderer)�c�：<br />void setItemMargin(double percent)每个分类之间的间�?br />void setMaxItemWidth(double percent)每个分类的最大宽�?br /><br />CategoryStepRenderer(AbstractCategoryItemRenderer)�c�：<br />void setStagger(boolean shouldStagger)不同分类的图是否交错<br /><br />MinMaxCategoryRenderer(AbstractCategoryItemRenderer)�c�：<br />void setDrawLines(boolean drawLines)是否在每个分�cȝ��间画�q�接�U?br />void setGroupPaint(Paint groupPaint)一�l�图形连接线的颜�?br />void setGroupStroke(Stroke groupStroke)一�l�图形连接线的笔�?br />void setMaxIcon(Icon maxIcon)最大值的ICON<br />void setMinIcon(Icon minIcon)最���值的ICON<br />void setObjectIcon(Icon objectIcon)所有值的ICON<br /><br />AreaRender(AbstractCategoryItemRenderer)�c�：<br />没有�Ҏ��的设�|?br /><br />StackedAreaRender(AreaRender)�c�：<br />没有�Ҏ��的设�|?br /><br /><br />关键���是用好Renderer�q�个�c�M���Q�再贴个例子�Q?br />    String sFont = "宋体";<br />    chart.setBorderVisible(true);<br />    chart.setBorderPaint(new Color(0xFF,0x66,0x00));<br />    chart.setBackgroundPaint(new Color(0xFF,0xF3,0xDE));<br />    chart.getTitle().setPaint(Color.red);<br />    chart.getTitle().setFont(new Font(sFont,Font.BOLD,14));<br /><br />    //讄���Plot�Q�不昄���所有网�?br />    ((CategoryPlot)chart.getPlot()).setOutlinePaint(null);<br />    ((CategoryPlot)chart.getPlot()).setDomainGridlinesVisible(false);<br />    ((CategoryPlot)chart.getPlot()).setRangeGridlinesVisible(false);<br /><br />    //讄���横��u字体�Q�设定横轴��u�U�不可见�Q�隐藏纵�?br />    ((CategoryPlot)chart.getPlot()).getDomainAxis().setTickLabelFont(new Font(sFont,Font.PLAIN,12));<br />    ((CategoryPlot)chart.getPlot()).getDomainAxis().setAxisLineVisible(false);<br />    ((CategoryPlot)chart.getPlot()).getRangeAxis().setVisible(false);<br /><br />    //采用BarRenderer作�ؓ表示�?br />    BarRenderer renderer = new BarRenderer();<br />    renderer.setPaint(new GradientPaint(0.0f,0.0f,Color.orange,0.0f,0.0f,Color.yellow));<br />    renderer.setOutlinePaint(Color.orange);<br />    renderer.setDrawBarOutline(true);<br /><br />    //在条中央昄���投票数�?br />    renderer.setItemLabelAnchorOffset(-20.0f);<br />    renderer.setLabelGenerator(new StandardCategoryLabelGenerator("{2}",new DecimalFormat()));<br />    renderer.setPositiveItemLabelPosition(new ItemLabelPosition());<br />    renderer.setItemLabelsVisible(true);<img src ="http://www.aygfsteel.com/terrywu/aggbug/105618.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/terrywu/" target="_blank">吴志�?/a> 2007-03-22 18:06 <a href="http://www.aygfsteel.com/terrywu/articles/105618.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>jfreechart1.0技�?/title><link>http://www.aygfsteel.com/terrywu/articles/103323.html</link><dc:creator>吴志�?/dc:creator><author>吴志�?/author><pubDate>Mon, 12 Mar 2007 06:47:00 GMT</pubDate><guid>http://www.aygfsteel.com/terrywu/articles/103323.html</guid><wfw:comment>http://www.aygfsteel.com/terrywu/comments/103323.html</wfw:comment><comments>http://www.aygfsteel.com/terrywu/articles/103323.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/terrywu/comments/commentRss/103323.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/terrywu/services/trackbacks/103323.html</trackback:ping><description><![CDATA[
		<br />jfreechart目前最高版本�ؓ1.0.0�?<a  target="_blank">http://www.jfree.org/jfreechart/index.html</a>)。可以绘�?br />pie charts  饼图,bar charts ��q���?line and area charts曲线�? scatter plots and bubble charts 散列�?time series 时序�?Area Charts区域�? Difference Chart差异�?Step Chart步骤�?Multiple Axis Charts 混合�?Gantt charts甘特图，combination charts 复合�?br />JFreeChart核心�c�d��介绍�Q?br />jfreechart主要�׃��个大的包�l�成�Q�org.jfree.chart,org.jfree.data。其中前者主要与囑�Ş<br />本��n有关�Q�后者与囑�Ş昄���的数据有兟�?br />核心�c�M��要有�Q?br />org.jfree.chart.JFreeChart�Q�图表对象，��M���c�d��的图表的最�l�表现�Ş式都是在该对象进行一些属性的定制。JFreeChart引擎本��n提供了一个工厂类用于创徏不同�c�d��的图表对�?br />org.jfree.data.category.XXXDataSet:数据集对象，用于提供昄���图表所用的数据。根据不同类型的图表对应着很多�c�d��的数据集对象�c?br />org.jfree.chart.plot.XXXPlot�Q�图表区域对象，基本上这个对象决定着什么样式的图表�Q�创�����对象的时候需要Axis、Renderer以及数据集对象的支持<br />org.jfree.chart.axis.XXXAxis�Q�用于处理图表的两个��_���U���u和横�?br />org.jfree.chart.render.XXXRender�Q�负责如何显�C�Z��个图表对�?br />org.jfree.chart.urls.XXXURLGenerator:用于生成Web图表中每个项目的鼠标点击链接<br />XXXXXToolTipGenerator:用于生成图象的帮助提�C�，不同�c�d��图表对应不同�c�d��的工��h���C�类<br />对于常用的饼��N����q��图，比较���单而且�|�上有很多的文章介绍�Q�在�q�里��׃��再一一复述了，<br />(可以参考这���文�?a  target="_blank">http://www-128.ibm.com/developerworks/cn/java/l-jfreechart/index.html?ca=dwcn-isc</a>&amp;me=ccid�Q?br />主要说明下另一�U�常见的报表�Q�时序图�Q�首先声明一个曲�U�数据集合对象和曲线对象<br /><br />TimePeriodValuesCollection timeseriescollection = new TimePeriodValuesCollection();<br />//声明具体是曲�U�对象，(可根据实际情况在同一张图中显�C�多条曲�U�进行数据比对，�Ҏ��实际应用情况当超�q?条曲�U�时�Q�就会有些�ؕ�?<br />TimePeriodValues timeperiod1 = new TimePeriodValues("服务器A在线用户数量");<br />TimePeriodValues timeperiod2 = new TimePeriodValues("服务器B在线用户数量");<br />我在使用TimeSeriesCollection tsc = new TimeSeriesCollection();<br />TimeSeries ts = new TimeSeries();<br />在生成数据集�Ӟ��ts.add(new Day(day, month, year),10))�Q�只能生成最���单位�ؓ天的横��u所以改用了TimePeriodValuesCollection <br />//�Ҏ��当前旉���取得横��u坐标�Q�时间间隔�ؓ1���时<br />Calendar cal = Calendar.getInstance();<br />int year = cal.get(Calendar.YEAR);<br />int month = cal.get(Calendar.MONTH) + 1;<br />int day = cal.get(Calendar.DAY_OF_MONTH);<br />//�q�里改�ؓ�Ҏ��自己�E�序得到的需要显�C�的旉���点和对应的数据的集合;<br />List objectList1 = dao.getList1();<br />List objectList2 = dao.getList2();<br />//使用循环�Q�把x��_��y轴的��D���l�timeseries1<br />for (int i =0;i&lt;objecthash1.size();i++) {<br />    int hour = objecthash1[i].getHours();<br />    int count = objecthash1[i].getCount();<br /> //���每一�Ҏ��据（旉����Q�数��|����d��到数据集�?(曲线对象1)�?br />    timeseries1.add(new Hour(hour, day, month, year),count);<br />}<br />for (int i =0;i&lt;objecthash2.size();i++) {<br />    int hour = objecthash2[i].getHours();<br />    int count = objecthash2[i].getCount();<br /> //���每一�Ҏ��据（旉����Q�数��|����d��到数据集�?(曲线对象2)�?br />    timeseries2.add(new Hour(hour, day, month, year),count);<br />}<br />//���曲�U�对象添加到曲线数据集合对象�?br />timeseriescollection.addSeries(timeseries1);<br />timeseriescollection.addSeries(timeseries2);<br />//�l�制报表<br />String title = "日在�U�用��L���?; //报表标题<br />String domain = "旉���";    //x�?br />String range = "用户在线数量";   //y�?br />//创徏旉���序列囑֯��?br />JFreeChart chart = ChartFactory.createTimeSeriesChart(<br />title,  //报表标题<br />domain, //报表横��u标签<br />range,  //报表�U���u标签<br />timeseriescollection, //数据集合<br />true,  //是否昄���图例,在这里如果�ؓtrue则会在图表的下方昄���各条数据曲线的名�U�和颜色<br />false, // 是否生成工具<br />false   // 是否生成URL链接);<br />//���报表保存�ؓjpg文�g<br />ChartUtilities.saveChartAsJPEG(file, //文�g保存物理路径包括路径和文件名<br />100,   //囄���质量<br />chart, //图表对象<br />1024,  //囑փ�宽度<br />768,   //囑փ�高度<br />null); //昄���信息<br />//���报表直接在��面输出<br />ChartUtilities.writeChartAsJPEG(res.getOutputStream(),100,chart,1024,768,null);<br /><br />String title="月在�U�用��L���?;  //标题<br />String domain="旉���(�?";//x�?br />String range="用户在线数量";//y轾b?br />TimePeriodValuesCollection   timeseriescollection   =   new   TimePeriodValuesCollection();<br />TimePeriodValues timeseries = new TimePeriodValues( "用户数量");<br /> timeseries.add(new Minute(0, 1, 1, 1, 2006), 100);<br /> timeseries.add(new Minute(10, 1, 1, 1, 2006), 500);<br /> timeseries.add(new Minute(20, 1, 1, 1, 2006), 300);<br /> timeseries.add(new Minute(30, 1, 1, 1, 2006), 800);<br />JFreeChart chart =ChartFactory.createTimeSeriesChart(title,domain,range,timeseriescollection,true,false,false);<br />当我们生成了一个报表对象时�Q�可能需要根据实际情冉|��军_��报表的横轴和�U���u的数值间隔，昄���方式�{��?br />可以用XYPlot xyplot = (XYPlot)chart.getPlot();来得到所有数据点的集合。（其它形状图表得到的数据集对象�Ҏ��实际情况造型�Q?br />得到数据炚w��合后�Q�我们就可以讄���各条曲线的颜�Ԍ��和坐标��u的距���，x轴、y轴的昄���方式�{�等属�?br />xyplot.setBackgroundPaint(Color.lightGray); //讑֮�图表数据昄���部分背景�?br />xyplot.setAxisOffset(new RectangleInsets(5D, 5D, 5D, 5D)); //讑֮�坐标轴与图表数据昄���部分距离<br />xyplot.setDomainGridlinePaint(Color.white); //�|�格�U�纵向颜�?br />xyplot.setRangeGridlinePaint(Color.white); //�|�格�U�横向颜�?br />数据点的调整<br />XYLineAndShapeRenderer xylineandshaperenderer = (XYLineAndShapeRenderer)xyplot.getRenderer();<br />xylineandshaperenderer.setDefaultShapesVisible(true);  //数据点可�?br />xylineandshaperenderer.setSeriesFillPaint(0, Color.red);  //讄����W�一条曲�U�数据点填充为红�Ԍ��如果一个图表有多条曲线可分别设�|?br />xylineandshaperenderer.setUseFillPaint(true);    //应用<br /><br />使用xyplot.getRangeAxis()得到�U���u�Q�xyplot.getDomainAxis()得到横��u�Q�得到后可以�Ҏ��实际情况造型�����己所需要的�c�d���?br />我的图表�U���u为数值类型，横��u为时间类型，使用如下方式<br />NumberAxis numAxis = (NumberAxis)xyplot.getRangeAxis();<br />DateAxis  dateaxis =   (DateAxis)xyplot.getDomainAxis();<br />//讄���y昄���方式<br />numAxis.setAutoTickUnitSelection(false);//数据轴的数据标签是否自动���定<br />double  rangetick = 0.1D;<br />numAxis.setTickUnit(new NumberTickUnit(rangetick));  //y轴单位间隔�ؓ0.1<br />//讄���x轴显�C�方�?br />dateaxis.setAutoTickUnitSelection(false);//数据轴的数据标签是否自动���定<br />dateaxis.setTickUnit(new DateTickUnit(DateTickUnit.DAY,1));//x轴单位间隔�ؓ1�?br />我们�q�可以是���数据格式化以后昄����Q�比如y轴显�C�百分比�Q?0%�?00%�Q?x轴显�C�Zؓ×月×日<br />NumberFormat nf =NumberFormat.getPercentInstance();<br />numAxis.setNumberFormatOverride(nf);//讄���y轴以癑ֈ�比方式显�C?br />SimpleDateFormat format = new SimpleDateFormat("MM月dd");<br />dateaxis.setDateFormatOverride(format);//讄���x轴数据单位以×月×日方式昄���<br />时序图中�q�有一个很重要的方�?br />timeseriescollection.setDomainIsPointsInTime(true); //x轴上的刻度点代表的是旉���点而不是时间段<br />最开始我没有讄����q�个属�?�l�果��d��来的图，老是差半��g��能在�q�个��d��的时候准���显�C�，往后移了半��|�����是因�ؓJFreeChart默认�q�个��d���?br />一个时间段�Q�它把这个刻度和下个��d��的中间点认�ؓ是显�C�数据点最佳位�|��?br /><br />其他一些关于AXIS�cȝ���Ҏ���Q?br />Axis�c�：<br />void setVisible(boolean flag)坐标轴是否可�?br />void setAxisLinePaint(Paint paint)坐标轴线条颜�Ԍ��3D轴无效）<br />void setAxisLineStroke(Stroke stroke)坐标轴线条笔触（3D轴无效）<br />void setAxisLineVisible(boolean visible)坐标轴线条是否可见（3D轴无效）<br />void setFixedDimension(double dimension)�Q�用于复合表中对多坐标��u的设�|�）<br />void setLabel(String label)坐标轴标�?br />void setLabelFont(Font font)坐标轴标题字�?br />void setLabelPaint(Paint paint)坐标轴标题颜�?br />void setLabelAngle(double angle)`坐标轴标题旋转角度（�U�坐标可以旋转）<br />void setTickLabelFont(Font font)坐标轴标���值字�?br />void setTickLabelPaint(Paint paint)坐标轴标���值颜�?br />void setTickLabelsVisible(boolean flag)坐标轴标���值是否显�C?br />void setTickMarkPaint(Paint paint)坐标轴标���颜�?br />void setTickMarkStroke(Stroke stroke)坐标轴标���笔�?br />void setTickMarksVisible(boolean flag)坐标轴标���是否显�C?br />ValueAxis(Axis)�c�：<br />void setAutoRange(boolean auto)自动讄���数据轴数据范�?br />void setAutoRangeMinimumSize(double size)自动讄���数据轴数据范围时数据范围的最���跨�?br />void setAutoTickUnitSelection(boolean flag)数据轴的数据标签是否自动���定�Q�默认�ؓtrue�Q?br />void setFixedAutoRange(double length)数据轴固定数据范��_��讄���100的话���是昄���MAXVALUE到MAXVALUE-100那段数据范围�Q?br />void setInverted(boolean flag)数据轴是否反向（默认为false�Q?br />void setLowerMargin(double margin)数据轴下�Q�左�Q�边�?br />void setUpperMargin(double margin)数据轴上�Q�右�Q�边�?br />void setLowerBound(double min)数据轴上的显�C�最����?br />void setUpperBound(double max)数据轴上的显�C�最大�?br />void setPositiveArrowVisible(boolean visible)是否昄���正向���头�Q?D轴无效）<br />void setNegativeArrowVisible(boolean visible)是否昄���反向���头�Q?D轴无效）<br />void setVerticalTickLabels(boolean flag)数据轴数据标�{�是否旋转到垂直<br />void setStandardTickUnits(TickUnitSource source)数据轴的数据标签�Q�可以只昄���整数标签�Q�需要将AutoTickUnitSelection设false�Q?br />NumberAxis(ValueAxis)�c�：<br />void setAutoRangeIncludesZero(boolean flag)是否强制在自动选择的数据范围中包含0<br />void setAutoRangeStickyZero(boolean flag)是否强制在整个数据��u中包�?�Q�即�?不在数据范围�?br />void setNumberFormatOverride(NumberFormat formatter)数据轴数据标�{����昄���格式<br />void setTickUnit(NumberTickUnit unit)数据轴的数据标签�Q�需要将AutoTickUnitSelection设false�Q?br />DateAxis(ValueAxis)�c�：<br />void setMaximumDate(Date maximumDate)日期轴上的最���日�?br />void setMinimumDate(Date minimumDate)日期轴上的最大日�?br />void setRange(Date lower,Date upper)日期轴范�?br />void setDateFormatOverride(DateFormat formatter)日期轴日期标�{����昄���格式<br />void setTickUnit(DateTickUnit unit)日期轴的日期标签�Q�需要将AutoTickUnitSelection设false�Q?br />void setTickMarkPosition(DateTickMarkPosition position)日期标签位置�Q�参数常量在org.jfree.chart.axis.DateTickMarkPosition�c�M��定义�Q?br />CategoryAxis(Axis)�c�：<br />void setCategoryMargin(double margin)分类轴边�?br />void setLowerMargin(double margin)分类轴下�Q�左�Q�边�?br />void setUpperMargin(double margin)分类轴上�Q�右�Q�边�?br />void setVerticalCategoryLabels(boolean flag)分类轴标题是否旋转到垂直<br />void setMaxCategoryLabelWidthRatio(float ratio)分类轴分�c�L���{����最大宽�?img src ="http://www.aygfsteel.com/terrywu/aggbug/103323.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/terrywu/" target="_blank">吴志�?/a> 2007-03-12 14:47 <a href="http://www.aygfsteel.com/terrywu/articles/103323.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>JFreeChart API</title><link>http://www.aygfsteel.com/terrywu/articles/49471.html</link><dc:creator>吴志�?/dc:creator><author>吴志�?/author><pubDate>Thu, 01 Jun 2006 02:48:00 GMT</pubDate><guid>http://www.aygfsteel.com/terrywu/articles/49471.html</guid><wfw:comment>http://www.aygfsteel.com/terrywu/comments/49471.html</wfw:comment><comments>http://www.aygfsteel.com/terrywu/articles/49471.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/terrywu/comments/commentRss/49471.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/terrywu/services/trackbacks/49471.html</trackback:ping><description><![CDATA[
		<div>JFreeChart�c�：<br />void setAntiAlias(boolean flag)    字体模糊边界<br />void setBackgroundImage(Image image)   背景囄���<br />void setBackgroundImageAlignment(int alignment)  背景囄���寚w��方式�Q�参数常量在org.jfree.ui.Align�c�M��定义�Q?br />void setBackgroundImageAlpha(float alpha)  背景囄���透明度（0.0�?.0�Q?br />void setBackgroundPaint(Paint paint)   背景�?br />void setBorderPaint(Paint paint)   边界�U�条颜色<br />void setBorderStroke(Stroke stroke)   边界�U�条�W�触<br />void setBorderVisible(boolean visible)   边界�U�条是否可见</div>
		<br />
		<div>
				<br />
				<p>----------------------------------------------------------------------------------------------------------- <br /></p>
				<p>TextTitle�c�：<br />void setFont(Font font)     标题字体<br />void setPaint(Paint paint)    标题字体颜色<br />void setText(String text)    标题内容 <br /></p>
				<p>----------------------------------------------------------------------------------------------------------- <br /></p>
				<p>StandardLegend(Legend)�c�：<br />void setBackgroundPaint(Paint paint)   囄���背景�?br />void setTitle(String title)    囄���标题内容<br />void setTitleFont(Font font)    囄���标题字体<br />void setBoundingBoxArcWidth(int arcWidth)  囄���边界圆角�?br />void setBoundingBoxArcHeight(int arcHeight)  囄���边界圆角�?br />void setOutlinePaint(Paint paint)   囄���边界�U�条颜色<br />void setOutlineStroke(Stroke stroke)   囄���边界�U�条�W�触<br />void setDisplaySeriesLines(boolean flag)  囄�����Ҏ��否显�C�横�U�（折线图有效）<br />void setDisplaySeriesShapes(boolean flag)  囄�����Ҏ��否显�C��Ş�Ӟ��折线图有效）<br />void setItemFont(Font font)    囄�����字�?br />void setItemPaint(Paint paint)    囄�����字体颜�?br />void setAnchor(int anchor)    囄���在图表中的显�C�Z���|�（参数帔R��在Legend�c�M��定义�Q?<br /></p>
				<p>----------------------------------------------------------------------------------------------------------- <br /></p>
				<p>Axis�c�：<br />void setVisible(boolean flag)    坐标轴是否可�?br />void setAxisLinePaint(Paint paint)   坐标轴线条颜�Ԍ��3D轴无效）<br />void setAxisLineStroke(Stroke stroke)   坐标轴线条笔触（3D轴无效）<br />void setAxisLineVisible(boolean visible)  坐标轴线条是否可见（3D轴无效）<br />void setFixedDimension(double dimension)  �Q�用于复合表中对多坐标��u的设�|�）<br />void setLabel(String label)    坐标轴标�?br />void setLabelFont(Font font)    坐标轴标题字�?br />void setLabelPaint(Paint paint)    坐标轴标题颜�?br />void setLabelAngle(double angle)`   坐标轴标题旋转角度（�U�坐标可以旋转）<br />void setTickLabelFont(Font font)   坐标轴标���值字�?br />void setTickLabelPaint(Paint paint)   坐标轴标���值颜�?br />void setTickLabelsVisible(boolean flag)   坐标轴标���值是否显�C?br />void setTickMarkPaint(Paint paint)   坐标轴标���颜�?br />void setTickMarkStroke(Stroke stroke)   坐标轴标���笔�?br />void setTickMarksVisible(boolean flag)   坐标轴标���是否显�C?<br /></p>
				<p>ValueAxis(Axis)�c�：<br />void setAutoRange(boolean auto)    自动讄���数据轴数据范�?br />void setAutoRangeMinimumSize(double size)  自动讄���数据轴数据范围时数据范围的最���跨�?br />void setAutoTickUnitSelection(boolean flag)  数据轴的数据标签是否自动���定�Q�默认�ؓtrue�Q?br />void setFixedAutoRange(double length)   数据轴固定数据范��_��讄���100的话���是昄���MAXVALUE到MAXVALUE-100那段数据范围�Q?br />void setInverted(boolean flag)    数据轴是否反向（默认为false�Q?br />void setLowerMargin(double margin)   数据轴下�Q�左�Q�边�?br />void setUpperMargin(double margin)   数据轴上�Q�右�Q�边�?br />void setLowerBound(double min)    数据轴上的显�C�最����?br />void setUpperBound(double max)    数据轴上的显�C�最大�?br />void setPositiveArrowVisible(boolean visible)  是否昄���正向���头�Q?D轴无效）<br />void setNegativeArrowVisible(boolean visible)  是否昄���反向���头�Q?D轴无效）<br />void setVerticalTickLabels(boolean flag)  数据轴数据标�{�是否旋转到垂直<br />void setStandardTickUnits(TickUnitSource source) 数据轴的数据标签�Q�可以只昄���整数标签�Q�需要将AutoTickUnitSelection设false�Q?<br /></p>
				<p>NumberAxis(ValueAxis)�c�：<br />void setAutoRangeIncludesZero(boolean flag)  是否强制在自动选择的数据范围中包含0<br />void setAutoRangeStickyZero(boolean flag)  是否强制在整个数据��u中包�?�Q�即�?不在数据范围�?br />void setNumberFormatOverride(NumberFormat formatter) 数据轴数据标�{����昄���格式<br />void setTickUnit(NumberTickUnit unit)   数据轴的数据标签�Q�需要将AutoTickUnitSelection设false�Q?<br /></p>
				<p>DateAxis(ValueAxis)�c�：<br />void setMaximumDate(Date maximumDate)   日期轴上的最���日�?br />void setMinimumDate(Date minimumDate)   日期轴上的最大日�?br />void setRange(Date lower,Date upper)   日期轴范�?br />void setDateFormatOverride(DateFormat formatter) 日期轴日期标�{����昄���格式<br />void setTickUnit(DateTickUnit unit)   日期轴的日期标签�Q�需要将AutoTickUnitSelection设false�Q?br />void setTickMarkPosition(DateTickMarkPosition position) 日期标签位置�Q�参数常量在org.jfree.chart.axis.DateTickMarkPosition�c�M��定义�Q?<br /></p>
				<p>CategoryAxis(Axis)�c�：<br />void setCategoryMargin(double margin)   分类轴边�?br />void setLowerMargin(double margin)   分类轴下�Q�左�Q�边�?br />void setUpperMargin(double margin)   分类轴上�Q�右�Q�边�?br />void setVerticalCategoryLabels(boolean flag)  分类轴标题是否旋转到垂直<br />void setMaxCategoryLabelWidthRatio(float ratio)  分类轴分�c�L���{����最大宽�?<br /></p>
				<p>----------------------------------------------------------------------------------------------------------- <br /></p>
				<p>Plot�c�：<br />void setBackgroundImage(Image image)   数据区的背景囄���<br />void setBackgroundImageAlignment(int alignment)  数据区的背景囄���寚w��方式�Q�参数常量在org.jfree.ui.Align�c�M��定义�Q?br />void setBackgroundPaint(Paint paint)   数据区的背景囄���背景�?br />void setBackgroundAlpha(float alpha)   数据区的背景透明度（0.0�?.0�Q?br />void setForegroundAlpha(float alpha)   数据区的前景透明度（0.0�?.0�Q?br />void setDataAreaRatio(double ratio)   数据区占整个图表区的癑ֈ��?br />void setOutLinePaint(Paint paint)   数据区的边界�U�条颜色<br />void setOutLineStroke(Stroke stroke)   数据区的边界�U�条�W�触<br />void setNoDataMessage(String message)   没有数据时显�C�的消息<br />void setNoDataMessageFont(Font font)   没有数据时显�C�的消息字体<br />void setNoDataMessagePaint(Paint paint)   没有数据时显�C�的消息颜色 <br /></p>
				<p>CategoryPlot(Plot)�c�：<br />void setDataset(CategoryDataset dataset)  数据区的2�l�数据表<br />void setColumnRenderingOrder(SortOrder order)  数据分类的排序方�?br />void setAxisOffset(Spacer offset)   坐标轴到数据区的间距<br />void setOrientation(PlotOrientation orientation) 数据区的方向�Q�PlotOrientation.HORIZONTAL或PlotOrientation.VERTICAL�Q?br />void setDomainAxis(CategoryAxis axis)   数据区的分类�?br />void setDomainAxisLocation(AxisLocation location) 分类轴的位置�Q�参数常量在org.jfree.chart.axis.AxisLocation�c�M��定义�Q?br />void setDomainGridlinesVisible(boolean visible)  分类轴网格是否可�?br />void setDomainGridlinePaint(Paint paint)  分类轴网格线条颜�?br />void setDomainGridlineStroke(Stroke stroke)  分类轴网格线条笔�?br />void setRangeAxis(ValueAxis axis)   数据区的数据�?br />void setRangeAxisLocation(AxisLocation location) 数据轴的位置�Q�参数常量在org.jfree.chart.axis.AxisLocation�c�M��定义�Q?br />void setRangeGridlinesVisible(boolean visible)  数据轴网格是否可�?br />void setRangeGridlinePaint(Paint paint)   数据轴网格线条颜�?br />void setRangeGridlineStroke(Stroke stroke)  数据轴网格线条笔�?br />void setRenderer(CategoryItemRenderer renderer)  数据区的表示者（详见Renderer�l�）<br />void addAnnotation(CategoryAnnotation annotation) �l�数据区加一个注�?br />void addRangeMarker(Marker marker,Layer layer)  �l�数据区加一个数��D��围区�?<br /></p>
				<p>PiePlot(Plot)�c�：<br />void setDataset(PieDataset dataset)   数据区的1�l�数据表<br />void setIgnoreNullValues(boolean flag)   忽略无值的分类<br />void setCircular(boolean flag)    饼图是否一定是正圆<br />void setStartAngle(double angle)   饼图的初始角�?br />void setDirection(Rotation direction)   饼图的旋转方�?br />void setExplodePercent(int section,double percent) 抽取的那块（1�l�数据表的分�c�M��标）以及抽取出来的距���（0.0�?.0�Q�，3D饼图无效<br />void setLabelBackgroundPaint(Paint paint)  分类标签的底�?br />void setLabelFont(Font font)    分类标签的字�?br />void setLabelPaint(Paint paint)    分类标签的字体颜�?br />void setLabelLinkMargin(double margin)   分类标签与图的连接线边距<br />void setLabelLinkPaint(Paint paint)   分类标签与图的连接线颜色<br />void setLabelLinkStroke(Stroke stroke)   分类标签与图的连接线�W�触<br />void setLabelOutlinePaint(Paint paint)   分类标签�Ҏ��颜色<br />void setLabelOutlineStroke(Paint paint)   分类标签�Ҏ���W�触<br />void setLabelShadowPaint(Paint paint)   分类标签阴媄颜色<br />void setMaximumLabelWidth(double width)   分类标签的最大长度（0.0�?.0�Q?br />void setPieIndex(int index)    饼图的烦引（复合饼图中用刎ͼ�<br />void setSectionOutlinePaint(int section,Paint paint) 指定分类饼的�Ҏ��颜色<br />void setSectionOutlineStroke(int section,Stroke stroke) 指定分类饼的�Ҏ���W�触<br />void setSectionPaint(int section,Paint paint)  指定分类饼的颜色<br />void setShadowPaint(Paint paint)   饼图的阴影颜�?br />void setShadowXOffset(double offset)   饼图的阴��q��对图的水�q�_���U?br />void setShadowYOffset(double offset)   饼图的阴��q��对图的垂直偏�U?br />void setLabelGenerator(PieSectionLabelGenerator generator) 分类标签的格式，讄���成null则整个标�{�֌�括连接线都不昄���<br />void setToolTipGenerator(PieToolTipGenerator generator)  MAP中鼠标移上的昄���格式<br />void setURLGenerator(PieURLGenerator generator)   MAP中钻取链接格�?<br /></p>
				<p>PiePlot3D(PiePlot)�c�：<br />void setDepthFactor(double factor)   3D饼图的Z轴高度（0.0�?.0�Q?<br /></p>
				<p>MultiplePiePlot(Plot)�c�：<br />void setLimit(double limit)    每个饼图之间的数据关联（详细比较复杂�Q�  �?br />void setPieChart(JFreeChart pieChart)   每个饼图的显�C�方式（见JFreeChart�c�M��PiePlot�c�） <br /></p>
				<p>----------------------------------------------------------------------------------------------------------- <br /></p>
				<p>AbstractRenderer�c�：<br />void setItemLabelAnchorOffset(double offset)     数据标签的与数据点的偏移<br />void setItemLabelsVisible(boolean visible)     数据标签是否可见<br />void setItemLabelFont(Font font)      数据标签的字�?br />void setItemLabelPaint(Paint paint)      数据标签的字体颜�?br />void setItemLabelPosition(ItemLabelPosition position)    数据标签位置<br />void setPositiveItemLabelPosition(ItemLabelPosition position)   正数标签位置<br />void setNegativeItemLabelPosition(ItemLabelPosition position)   负数标签位置<br />void setOutLinePaint(Paint paint)      囑�Ş�Ҏ��的线条颜�?br />void setOutLineStroke(Stroke stroke)      囑�Ş�Ҏ��的线条笔�?br />void setPaint(Paint paint)       所有分�c�d��形的颜色<br />void setShape(Shape shape)       所有分�c�d��形的形状�Q�如折线囄���点）<br />void setStroke(Stroke stroke)       所有分�c�d��形的�W�触�Q�如折线囄����U�）<br />void setSeriesItemLabelsVisible(int series,boolean visible)   指定分类的数据标�{�是否可�?br />void setSeriesItemLabelFont(int series,Font font)    指定分类的数据标�{����字体<br />void setSeriesItemLabelPaint(int series,Paint paint)    指定分类的数据标�{����字体颜色<br />void setSeriesItemLabelPosition(int series,ItemLabelPosition position)  数据标签位置<br />void setSeriesPositiveItemLabelPosition(int series,ItemLabelPosition position) 正数标签位置<br />void setSeriesNegativeItemLabelPosition(int series,ItemLabelPosition position) 负数标签位置<br />void setSeriesOutLinePaint(int series,Paint paint)    指定分类的图形边框的�U�条颜色<br />void setSeriesOutLineStroke(int series,Stroke stroke)    指定分类的图形边框的�U�条�W�触<br />void setSeriesPaint(int series,Paint paint)     指定分类囑�Ş的颜�?br />void setSeriesShape(int series,Shape shape)     指定分类囑�Ş的�Ş�Ӟ��如折�U�图的点�Q?br />void setSeriesStroke(int series,Stroke stroke)     指定分类囑�Ş的笔触（如折�U�图的线�Q?<br /></p>
				<p>AbstractCategoryItemRenderer(AbstractRenderer)�c�：<br />void setLabelGenerator(CategoryLabelGenerator generator)   数据标签的格�?br />void setToolTipGenerator(CategoryToolTipGenerator generator)   MAP中鼠标移上的昄���格式<br />void setItemURLGenerator(CategoryURLGenerator generator)   MAP中钻取链接格�?br />void setSeriesLabelGenerator(int series,CategoryLabelGenerator generator) 指定分类的数据标�{����格式<br />void setSeriesToolTipGenerator(int series,CategoryToolTipGenerator generator) 指定分类的MAP中鼠标移上的昄���格式<br />void setSeriesItemURLGenerator(int series,CategoryURLGenerator generator) 指定分类的MAP中钻取链接格�?<br /></p>
				<p>BarRenderer(AbstractCategoryItemRenderer)�c�：<br />void setDrawBarOutline(boolean draw)      是否��d��形边�?br />void setItemMargin(double percent)      每个BAR之间的间�?br />void setMaxBarWidth(double percent)      每个BAR的最大宽�?br />void setMinimumBarLength(double min)      最短的BAR长度�Q�避免数值太���而显�C�Z���?br />void setPositiveItemLabelPositionFallback(ItemLabelPosition position)  无法在BAR中显�C�的正数标签位置<br />void setNegativeItemLabelPositionFallback(ItemLabelPosition position)  无法在BAR中显�C�的负数标签位置 <br /></p>
				<p>BarRenderer3D(BarRenderer)�c�：<br />void setWallPaint(Paint paint)    3D坐标轴的墙体颜色 <br /></p>
				<p>StackedBarRenderer(BarRenderer)�c�：<br />没有�Ҏ��的设�|?<br /></p>
				<p>StackedBarRenderer3D(BarRenderer3D)�c�：<br />没有�Ҏ��的设�|?<br /></p>
				<p>GroupedStackedBarRenderer(StackedBarRenderer)�c�：<br />void setSeriesToGroupMap(KeyToGroupMap map)  ���分�c�自��q��映射成若�q�个�l�（KeyToGroupMap.mapKeyToGroup(series,group)�Q?<br /></p>
				<p>LayeredBarRenderer(BarRenderer)�c�：<br />void setSeriesBarWidth(int series,double width)  讑֮�每个分类的宽度（注意讄���不要使某分类被覆盖） <br /></p>
				<p>WaterfallBarRenderer(BarRenderer)�c�：<br />void setFirstBarPaint(Paint paint)   �W�一个柱囄���颜色<br />void setLastBarPaint(Paint paint)   最后一个柱囄���颜色<br />void setPositiveBarPaint(Paint paint)   正值柱囄���颜色<br />void setNegativeBarPaint(Paint paint)   负值柱囄���颜色 <br /></p>
				<p>IntervalBarRenderer(BarRenderer)�c�：<br />需要传IntervalCategoryDataset作�ؓ数据�?<br /></p>
				<p>GanttBarRenderer(IntervalBarRenderer)�c�：<br />void setCompletePaint(Paint paint)   完成�q�度颜色<br />void setIncompletePaint(Paint paint)   未完成进度颜�?br />void setStartPercent(double percent)   讄����q�度条在整条中的起始位置�Q?.0�?.0�Q?br />void setEndPercent(double percent)   讄����q�度条在整条中的�l�束位置�Q?.0�?.0�Q?<br /></p>
				<p>StatisticBarRenderer(BarRenderer)�c�：<br />需要传StatisticCategoryDataset作�ؓ数据�?<br /></p>
				<p>LineAndShapeRenderer(AbstractCategoryItemRenderer)�c�：<br />void setDrawLines(boolean draw)    是否折线的数据点之间用线�q?br />void setDrawShapes(boolean draw)   是否折线的数据点�Ҏ��分类使用不同的�Ş�?br />void setShapesFilled(boolean filled)   所有分�c�L��否填充数据点囑�Ş<br />void setSeriesShapesFilled(int series,boolean filled) 指定分类是否填充数据点图�?br />void setUseFillPaintForShapeOutline(boolean use) 指定是否填充数据点的Paint也被用于��L��据点形状的边�?<br /></p>
				<p>LevelRenderer(AbstractCategoryItemRenderer)�c�：<br />void setItemMargin(double percent)   每个分类之间的间�?br />void setMaxItemWidth(double percent)   每个分类的最大宽�?<br /></p>
				<p>CategoryStepRenderer(AbstractCategoryItemRenderer)�c�：<br />void setStagger(boolean shouldStagger)   不同分类的图是否交错 <br /></p>
				<p>MinMaxCategoryRenderer(AbstractCategoryItemRenderer)�c�：<br />void setDrawLines(boolean drawLines)   是否在每个分�cȝ��间画�q�接�U?br />void setGroupPaint(Paint groupPaint)   一�l�图形连接线的颜�?br />void setGroupStroke(Stroke groupStroke)   一�l�图形连接线的笔�?br />void setMaxIcon(Icon maxIcon)    最大值的ICON<br />void setMinIcon(Icon minIcon)    最���值的ICON<br />void setObjectIcon(Icon objectIcon)   所有值的ICON <br /></p>
				<p>AreaRender(AbstractCategoryItemRenderer)�c�：<br />没有�Ҏ��的设�|?<br /></p>
				<p>StackedAreaRender(AreaRender)�c�：<br />没有�Ҏ��的设�|?/p>
		</div>
<img src ="http://www.aygfsteel.com/terrywu/aggbug/49471.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/terrywu/" target="_blank">吴志�?/a> 2006-06-01 10:48 <a href="http://www.aygfsteel.com/terrywu/articles/49471.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>JasperReport�l�验�?</title><link>http://www.aygfsteel.com/terrywu/articles/49461.html</link><dc:creator>吴志�?/dc:creator><author>吴志�?/author><pubDate>Thu, 01 Jun 2006 02:36:00 GMT</pubDate><guid>http://www.aygfsteel.com/terrywu/articles/49461.html</guid><wfw:comment>http://www.aygfsteel.com/terrywu/comments/49461.html</wfw:comment><comments>http://www.aygfsteel.com/terrywu/articles/49461.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/terrywu/comments/commentRss/49461.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/terrywu/services/trackbacks/49461.html</trackback:ping><description><![CDATA[
		<p>
				<font face="Arial">JasperReport和iReport是不错的Java报表工具. 在实际项目中, 本�h用它们开发了20个Report, 涉及SubReport, Image, Graph, �U�篏了一些经�? ���其是关于Export到Excel斚w��, 文���上也很少提及, �U���a是摸索出来的, 有的问题�q�是通过��L��代码才解决的. 此脓�q����入门教程, 差不多算是笔记吧, 以问�{��Ş式记�? </font>
				<br />
		</p>
		<p style="TEXT-INDENT: 2em"> </p>
		<ol>
				<p style="TEXT-INDENT: 2em"> </p>
				<li>iReport 
<p style="TEXT-INDENT: 2em"> </p></li>
				<li>安装 
<p style="TEXT-INDENT: 2em"> </p><ol><p style="TEXT-INDENT: 2em"> </p><li>下蝲�Q�解压iReport 0.4.0 (推荐src版本�Q?
<p style="TEXT-INDENT: 2em"> </p></li><li>���认JDK�?.4以上 
<p style="TEXT-INDENT: 2em"> </p></li><li>把JDK /lib下的tools.jar拯���到{ireport_home}/lib目录�?</li></ol><p style="TEXT-INDENT: 2em"> </p></li>
				<li>�q�行 
<p style="TEXT-INDENT: 2em"> </p><ol><p style="TEXT-INDENT: 2em"> </p><li>对于下蝲的Binary版本�Q�只能运�?bin/startup.bat 
<p style="TEXT-INDENT: 2em"> </p></li><li>对于下蝲的Src版本�Q�可以通过ant iReport�q�行�Q�先安装ant) 
<p style="TEXT-INDENT: 2em"> </p></li><li>如果�q�行startup.bat�Q�出现java.lang.NoSuchMethodError错误�Q�一般是JDK版本太低。如果确认已安装�?.4或以上，���查path�pȝ��变量�Q�看看有1.3的JRE是不是排在前面（比如安装了Oracle的客��L���Q�往往�?.3的JRE�Q�，如果出现Class Not Found�Q�检查classpath。对于通过ant的方式运行，一般都没什么问题，所以推荐下载src版本 </li></ol><p style="TEXT-INDENT: 2em"> </p></li>
				<li>JasperReport 常见问题 
<p style="TEXT-INDENT: 2em"> </p><ol><p style="TEXT-INDENT: 2em"> </p><li>.jrxml vs .jasper 
<p style="TEXT-INDENT: 2em"> </p><ul><p style="TEXT-INDENT: 2em"> </p><li>如果在运行时载入.jrxml, 那么每次调用�q�得�~�译, 不如预先�~�译�?jasper.不过预先�~�译的jasper,必须用同��L��本的JasperReport载入,而且灉|��性差�? 不过对于大部分报�?�q�是预先�~�译成jasper方便 </li></ul><p style="TEXT-INDENT: 2em"> </p></li><li>如果扚w���~�译jrxml 
<p style="TEXT-INDENT: 2em"> </p><ul><p style="TEXT-INDENT: 2em"> </p><li>用Ant很容易解�?br /><code><taskdef name="jrc" classname="net.sf.jasperreports.ant.JRAntCompileTask"></taskdef><br /> <classpath refid="classpath"></classpath><br /><br />..... <br /><jrc excludes="*.bak.jrxml" includes="*.jrxml" destdir="${buildDir}/jasperReports" srcdir="${jasperReportDir}"></jrc><br /> <classpath refid="classpath"></classpath><br /><br /></code></li></ul><p style="TEXT-INDENT: 2em"> </p></li><li>如何使用囄����Q?
<p style="TEXT-INDENT: 2em"> </p><ul><p style="TEXT-INDENT: 2em"> </p><li>很容�?用Image控�g���可以了. 在Image Express里面可以用String来表�C�图片的路径, 或者用InputStream, File对象.不过不管用File�q�是String对象, 都不得不用绝对�\�? �q�显然很不灵�z? 解决办法�?�I�入一�?P的参�?表示囄���所在的目录,然后�?P和文件名拼接出完整的�l�对路径. 更好的方法是用InputStream, 例如this.getClass().getResourceAsStream("logo.jpg") ,�q�时只要把图片放在当�?jasper所在的目录���可以了,不必考虑什么参�?什么�\径了 </li></ul><p style="TEXT-INDENT: 2em"> </p></li><li>昄���非数据库字段变量 
<p style="TEXT-INDENT: 2em"> </p><ul><p style="TEXT-INDENT: 2em"> </p><li>昄���如运行日期等,可以直接在Text Field里面输入new java.util.Date(), 然后把Pattern设成如mm/dd/yyyy. </li></ul><p style="TEXT-INDENT: 2em"> </p></li><li>动态控制某些Field是否昄��� 
<p style="TEXT-INDENT: 2em"> </p><ul><p style="TEXT-INDENT: 2em"> </p><li>每个Static Text, Text Field甚至整个Band的属性里面都有Print When Expression, 比如设成new Boolean(!$P{isDisplay}.equalsIgnoreCase("yes")), 那么只有当参数display的��gؓyes的时候才昄��� </li></ul><p style="TEXT-INDENT: 2em"> </p></li><li>使用Sub Report, 如何使用相对路径 
<p style="TEXT-INDENT: 2em"> </p><ul><p style="TEXT-INDENT: 2em"> </p><li>�?.3, 和��用图片类�? 用InputStream或者传入参�?</li></ul><p style="TEXT-INDENT: 2em"> </p></li><li>Query里面如何使用参数 
<p style="TEXT-INDENT: 2em"> </p><ul><p style="TEXT-INDENT: 2em"> </p><li>$P!{xxx} 或�?$P{xxx} 后者只能用于类似PreparedStatement参数�l�定, 而前者可替换Sql的�Q意部�? 在需要动态排序的时�? 前者特别有�? 比如 select a,b,c from t order by $P!{orderClause}   不管�?P�q�是$P!, SQL最�l�是以PreparedStatement方式执行�? 不必太担心性能问题   注意:参数是不能嵌套的, 比如$P{a} =''$P''   , $P=''value'', 不要指望$P{a}能被替换�?'value'' </li></ul><p style="TEXT-INDENT: 2em"> </p></li><li>如何使用图表(Graph) 
<p style="TEXT-INDENT: 2em"> </p><ul><p style="TEXT-INDENT: 2em"> </p><li>JasperReport本��n没有图表功能, 只有昄���Image的功�?�?.3). iReport里有个Graph向导, 其实质是通过jFreeChart生成Image. 更另�? 更直接的做法是放一个Image控�g, Image Express Class讄���成java.awt.Image, 在Image Expression里通过自定义的�c�返回java.awt.Image对象. 例如''GraphProvider.getImage($P{REPORT_DATASOURCE},title, subtitle.....)''.  GraphProvider是自��q���c? public static Image getImage(JRDataSource, ....) </li></ul><p style="TEXT-INDENT: 2em"> </p></li><li>如果昄���多个图表 
<p style="TEXT-INDENT: 2em"> </p><ul><p style="TEXT-INDENT: 2em"> </p><li>在一张报表上昄���一个图表和昄���多个图表是不同的. 假设Query是select name,price,qty from xxx, �W�一张图昄���name-price, �W�二张图昄���name-qty, 如果�q�是�?.8的方�? �W�二张图�Ҏ��昄���不出�? ��Z��么�?因�ؓ传入的是JRDataSource, 而JRDataSource仅仅是对ResultSet的简单封�? 在第一张图处理完后, 游标已经��C��eof位置�? 在开始处理第二张囄���时�?���必然抛出游标耗尽的异�? 怎么办 �?自己写个JRDataSourceAdapter, 把JRDataSource对象里面的值预先保存到一个Collection (相当于一个Offline的数据集), 然后把这个Collection传个getImage�Ҏ��. 具体�? ��Z��个Variable  mydate, �c�d��是java.util.Map, Calculation Type- System, Initial Value Expression是JRDataSourceAdapter.JRDataSource2Map($P{REPORT_DATA_SOURCE},new String[]{"NAME","PRICE","QTY"},new Class[]{java.lang.String.class,java.lang.Double.class,java.lang.Double.class}), JRDataSource2Map是自己写的一个Adapter. 然后在Image的Expression里面换成�?'GraphProvider.getImage(mydata,title, other params...), 当然得修改getImage�Ҏ�� </li></ul></li></ol><p style="TEXT-INDENT: 2em"> </p></li>
				<li>Export到Excel的问�?
<p style="TEXT-INDENT: 2em"> </p><ol><p style="TEXT-INDENT: 2em"> </p><li>如何��L��报表头等 
<p style="TEXT-INDENT: 2em"> </p><ul><p style="TEXT-INDENT: 2em"> </p><li>直接把不需要的Band删除(把其高度设�ؓ0). 如果仅仅是export到Excel的时候不需要报表头, 而输出到PDF�{�仍焉���要保�? 那么使用print when expression, �?.4 </li></ul><p style="TEXT-INDENT: 2em"> </p></li><li>如果让Excel看�v来整�?
<p style="TEXT-INDENT: 2em"> </p><ul><p style="TEXT-INDENT: 2em"> </p><li>不要有空白地�? 首先把所有的Field设成一样高, 寚w��! 把所在Band的高度也设成和Field一样高, 让Field正好攑օ�Band. 然后调整Field的宽�? 让每个Field都相�?没有�I�隙. 最�?记得讄���参数: exporter.setParameter(JRXlsExporterParameter.IS_REMOVE_EMPTY_SPACE_BETWEEN_ROWS,<br />                    Boolean.TRUE);<br /></li></ul><p style="TEXT-INDENT: 2em"> </p></li><li>如何保留GridLine 
<p style="TEXT-INDENT: 2em"> </p><ul><p style="TEXT-INDENT: 2em"> </p><li>首先, 讄���参数exporter.setParameter(JRXlsExporterParameter.IS_WHITE_PAGE_BACKGROUND, Boolean.FALSE); 然后,把每个Field或者Static Text框的''Transparent''属性都勾上 </li></ul><p style="TEXT-INDENT: 2em"> </p></li><li>如何使字�D�名只显�C�Z����?
<p style="TEXT-INDENT: 2em"> </p><ul><p style="TEXT-INDENT: 2em"> </p><li>如果把字�D�名攑֜�ColumnHead区域, 那么输出到Excel, 会每个Page都显�C�Z���? 在设计Report时�? 一般会讑֮�Page大小. 然而对于Excel, �q�个Page讑֮�仍然存在,而且往往很讨�? 因�ؓ在Excel�? 通常希望得到�q�箋的数�? 然而Jasper仍然�?'自作多情''�q�行分页. 比如�? 设计JasperReport的时�? 讑֮�page size为Letter, Portrait, 那么输出到Excel的时候每隔大�U?0�?具体取决于Field的高�?, page header, column header, column foot, page foot 会被重复一��? 而且�q�附带一个高度�ؓ0的Excel Row, 表示Page Break的地�? 把字�D�名攑֜�title band�? 可以解决字段名重复的问题, 当然page header也不要显�C�Z��. 如果需�? 可以把title band的print when expression设成只有输出Excel的时候才昄��� </li></ul><p style="TEXT-INDENT: 2em"> </p></li><li>��Z��么Excel里面的数据是从第二行,�W�B列开始显�C�的  
<p style="TEXT-INDENT: 2em"> </p><ul><p style="TEXT-INDENT: 2em"> </p><li>因�ؓ�W�一行和�W�A列分别是用来表示page top margin �?page left margin�? 对于Excel来说, �U���a多余. 解决�Ҏ��是把page margin 设成0. 不过如果�q�个report�q�需要以PDF�{�显�C? 那么设成0��׃��好看�? 最好能动态的改变page margin. 当然,�q�个改变只能在外�?调用Report的地�? �q�行, 在设计Report的时候是无能为力�? 不幸的是, JasperReport�c�d��然没有setMargin的方�?只有getter. 折中的方法只能是reflect�? 代码�C�意如下: //use reflect to set the private field of JRBaseReport<br />                 java.lang.reflect.Field margin = JRBaseReport.class.getDeclaredField(<br />                        "leftMargin");<br />                margin.setAccessible(true);<br />                margin.setInt(myRpt, 0);                 margin = JRBaseReport.class.getDeclaredField("topMargin");<br />                margin.setAccessible(true);<br />                margin.setInt(myRpt, 0);                 margin = JRBaseReport.class.getDeclaredField("bottomMargin");<br />                margin.setAccessible(true);<br />                margin.setInt(myRpt, 0); </li></ul><p style="TEXT-INDENT: 2em"> </p></li><li>如何��L��Excel中隐藏的行�?
<p style="TEXT-INDENT: 2em"> </p><ul><p style="TEXT-INDENT: 2em"> </p><li>如前说述, �׃��page break的关�p? Excel中每隔几十行,���有一个高度�ؓ0的row, 即��把page botom margin设�ؓ0, 把page footer��L��都没有办�? 唯一的解军_��法是把page height设�ؓ很大. �?.5一�? 不得不��用reflect: 
<p style="TEXT-INDENT: 2em"> </p><ul><p style="TEXT-INDENT: 2em"> </p><li>java.lang.reflect.Field pageHeight = JRBaseReport.class.getDeclaredField(<br />                        "pageHeight");<br />                pageHeight.setAccessible(true);<br />                pageHeight.setInt(myRpt, Integer.MAX_VALUE);<br /></li></ul></li></ul></li></ol><p style="TEXT-INDENT: 2em"> </p></li>
				<li>文��� 
<p style="TEXT-INDENT: 2em"> </p><ol><p style="TEXT-INDENT: 2em"> </p><li>哪里有文档�?
<p style="TEXT-INDENT: 2em"> </p><ul><p style="TEXT-INDENT: 2em"> </p><li>JasperReport有䆾Ultimate Guide, 不过不是免费�? 和jFreeChart一个�d�? 不过�|�上有流�? 写的�q�可�? 60多页, 不过也没详细到哪里去. 如果下蝲源代码版, 那么看看自带的Demo也不�? SF的论坛也是问问题的最好地�?</li></ul></li></ol><p style="TEXT-INDENT: 2em"> </p></li>
				<li>源代�?仅供参�?reportProvider--一个Servlet, GraphProider, JRDataAdapter都是普通类) </li>
		</ol>
		<p style="TEXT-INDENT: 2em"> </p>
		<p>/**<br /> * </p>
		<p style="TEXT-INDENT: 2em"> </p>
		<p>Title: ReportProviderServlet</p>
		<br /> * 
<p style="TEXT-INDENT: 2em"> </p><p>Description: Servlet to generate Jasper reports</p><br /> * 
<p style="TEXT-INDENT: 2em"> </p><p>Copyright: Copyright (c) 2004</p><br /> * 
<p style="TEXT-INDENT: 2em"> </p><p>Company: *****</p><br /> * @author zephyr<br /> * @version 1.0<br /> */<br />package xyz; 
<p style="TEXT-INDENT: 2em"> </p><p> </p><p style="TEXT-INDENT: 2em"> </p><p>import net.sf.jasperreports.engine.*;<br />import net.sf.jasperreports.engine.base.*;<br />import net.sf.jasperreports.engine.export.*;<br />import net.sf.jasperreports.engine.util.*;</p><p style="TEXT-INDENT: 2em"> </p><p>import org.apache.log4j.*;</p><p style="TEXT-INDENT: 2em"> </p><p>import java.io.*;</p><p style="TEXT-INDENT: 2em"> </p><p>import java.sql.*;</p><p style="TEXT-INDENT: 2em"> </p><p>import java.util.*;</p><p style="TEXT-INDENT: 2em"> </p><p>import javax.servlet.*;<br />import javax.servlet.http.*;</p><p style="TEXT-INDENT: 2em"> </p><p><br />public class ReportProviderServlet extends HttpServlet<br />{<br />    private static Logger log = LogManager.getLogger(ReportProviderServlet.class);</p><p style="TEXT-INDENT: 2em"> </p><p>    //Initialize: Setup DataSourceManager<br />    public void init() throws javax.servlet.ServletException<br />    {<br />        String prefix = getServletContext().getRealPath("/");<br />        String file = getInitParameter("data-source-file");</p><p style="TEXT-INDENT: 2em"> </p><p>        DataSourceManager.configure(prefix + file);</p><p style="TEXT-INDENT: 2em"> </p><p>        log.info("initialized successfully!");<br />    }</p><p style="TEXT-INDENT: 2em"> </p><p>    //Process the HTTP request<br />    public void service(HttpServletRequest request, HttpServletResponse response)<br />        throws ServletException, IOException<br />    {<br />        String reportClass = request.getParameter("reportClass");</p><p style="TEXT-INDENT: 2em"> </p><p>        log.debug("Running Report:" + reportClass);</p><p style="TEXT-INDENT: 2em"> </p><p>        boolean isExcelFormat = false;</p><p style="TEXT-INDENT: 2em"> </p><p>        if (reportClass == null)<br />        {<br />            throw new IllegalArgumentException("Jasper Class Unspecified");<br />        }</p><p style="TEXT-INDENT: 2em"> </p><p>        String reportFormat = request.getParameter("reportFormat");</p><p style="TEXT-INDENT: 2em"> </p><p>        if (reportFormat == null)<br />        {<br />            reportFormat = "jasperPrint";<br />        }</p><p style="TEXT-INDENT: 2em"> </p><p>        try<br />        {<br />            JasperReport myRpt = JasperManager.loadReport(this.getClass()<br />                                                              .getResourceAsStream("/jasperReports/" +<br />                        reportClass + ".jasper"));</p><p style="TEXT-INDENT: 2em"> </p><p>            //set ReprintHeaderOnEachPage=false for Excel Format<br />            isExcelFormat = reportFormat.equalsIgnoreCase("excel");</p><p style="TEXT-INDENT: 2em"> </p><p>            if (isExcelFormat)<br />            {<br />                //use reflect to set the private field of JRBaseReport<br />                //No margin for excel format, max pageHeight<br />                java.lang.reflect.Field margin = JRBaseReport.class.getDeclaredField(<br />                        "leftMargin");<br />                margin.setAccessible(true);<br />                margin.setInt(myRpt, 0);</p><p style="TEXT-INDENT: 2em"> </p><p>                margin = JRBaseReport.class.getDeclaredField("topMargin");<br />                margin.setAccessible(true);<br />                margin.setInt(myRpt, 0);</p><p style="TEXT-INDENT: 2em"> </p><p>                margin = JRBaseReport.class.getDeclaredField("bottomMargin");<br />                margin.setAccessible(true);<br />                margin.setInt(myRpt, 0);</p><p style="TEXT-INDENT: 2em"> </p><p>                java.lang.reflect.Field pageHeight = JRBaseReport.class.getDeclaredField(<br />                        "pageHeight");<br />                pageHeight.setAccessible(true);<br />                pageHeight.setInt(myRpt, Integer.MAX_VALUE);</p><p style="TEXT-INDENT: 2em"> </p><p>                //Don't print group header on each page<br />                if (null != myRpt.getGroups())<br />                {<br />                    for (int i = 0; i &lt; myRpt.getGroups().length; i++)<br />                    {<br />                        myRpt.getGroups()[i].setReprintHeaderOnEachPage(false);<br />                    }<br />                }<br />            }</p><p style="TEXT-INDENT: 2em"> </p><p>            Map params = new HashMap(10);<br />            Enumeration enu = request.getParameterNames();</p><p style="TEXT-INDENT: 2em"> </p><p>            while (enu.hasMoreElements())<br />            {<br />                String key = (String) enu.nextElement();<br />                params.put(key,<br />                    request.getParameter(key).toUpperCase().replaceAll("'", "''"));<br />                log.debug(key + "=" + request.getParameter(key));<br />            }</p><p style="TEXT-INDENT: 2em"> </p><p>            log.debug("Before Filling");</p><p style="TEXT-INDENT: 2em"> </p><p>            OutputStream httpOut = response.getOutputStream();</p><p style="TEXT-INDENT: 2em"> </p><p>            Connection conn = DataSourceManager.getConnection(request.getSession());</p><p style="TEXT-INDENT: 2em"> </p><p>            JasperPrint rptPnt = JasperManager.fillReport(myRpt, params, conn);</p><p style="TEXT-INDENT: 2em"> </p><p>            conn.close();</p><p style="TEXT-INDENT: 2em"> </p><p>            if (reportFormat.equalsIgnoreCase("jasperPrint"))<br />            {<br />                response.setContentType("application/octet-stream");<br />                JRSaver.saveObject(rptPnt, httpOut);<br />            }<br />            else if (reportFormat.equalsIgnoreCase("pdf"))<br />            {<br />                response.setContentType("application/pdf");<br />                response.setHeader("Content-Disposition",<br />                    "attachment;filename=\"" + reportClass + ".PDF\"");<br />                JasperManager.printReportToPdfStream(rptPnt, httpOut);<br />            }<br />            else if (reportFormat.equalsIgnoreCase("excel"))<br />            {<br />                response.setContentType("application/vnd.ms-excel");<br />                response.setHeader("Content-Disposition",<br />                    "attachment;filename=\"" + reportClass + ".XLS\"");</p><p style="TEXT-INDENT: 2em"> </p><p>                JRXlsExporter exporter = new JRXlsExporter();</p><p style="TEXT-INDENT: 2em"> </p><p>                exporter.setParameter(JRExporterParameter.JASPER_PRINT, rptPnt);<br />                exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, httpOut);<br />                exporter.setParameter(JRXlsExporterParameter.IS_REMOVE_EMPTY_SPACE_BETWEEN_ROWS,<br />                    Boolean.TRUE);<br />                exporter.setParameter(JRXlsExporterParameter.IS_ONE_PAGE_PER_SHEET,<br />                    Boolean.FALSE);<br />                exporter.setParameter(JRXlsExporterParameter.IS_WHITE_PAGE_BACKGROUND,<br />                    Boolean.FALSE);<br />                exporter.exportReport();<br />            }<br />            else if (reportFormat.equalsIgnoreCase("html"))<br />            {<br />                JRHtmlExporter exporter = new JRHtmlExporter();<br />                response.setContentType("text/html");</p><p style="TEXT-INDENT: 2em"> </p><p>                Map imagesMap = new HashMap();</p><p style="TEXT-INDENT: 2em"> </p><p>                request.getSession().setAttribute("IMAGES_MAP", imagesMap);</p><p style="TEXT-INDENT: 2em"> </p><p>                exporter.setParameter(JRHtmlExporterParameter.IMAGES_MAP,<br />                    imagesMap);<br />                exporter.setParameter(JRHtmlExporterParameter.IMAGES_URI,<br />                    "image.jsp image=");<br />                exporter.setParameter(JRExporterParameter.JASPER_PRINT, rptPnt);<br />                exporter.setParameter(JRExporterParameter.OUTPUT_STREAM, httpOut);</p><p style="TEXT-INDENT: 2em"> </p><p>                exporter.exportReport();<br />            }</p><p style="TEXT-INDENT: 2em"> </p><p>            log.debug("Report Exported");<br />        }<br />        catch (Exception ex)<br />        {<br />            log.error("Error Occured", ex);<br />        }<br />    }<br />}<br /></p><p style="TEXT-INDENT: 2em"> </p><p> </p><p style="TEXT-INDENT: 2em"> </p><p> </p><p style="TEXT-INDENT: 2em"> </p><p>/**<br /> * </p><p style="TEXT-INDENT: 2em"> </p><p>Title: JRDataSourceAdapter</p><br /> * 
<p style="TEXT-INDENT: 2em"> </p><p>Description: Converting JRDataSource to Mapped ArrayList</p><br /> * 
<p style="TEXT-INDENT: 2em"> </p><p>Copyright: Copyright (c) 2004</p><br /> * 
<p style="TEXT-INDENT: 2em"> </p><p>Company: *****</p><br /> * @author zephyr<br /> * @version 1.0<br /> */<br />package xyz; 
<p style="TEXT-INDENT: 2em"> </p><p> </p><p style="TEXT-INDENT: 2em"> </p><p>import net.sf.jasperreports.engine.*;<br />import net.sf.jasperreports.engine.design.*;</p><p style="TEXT-INDENT: 2em"> </p><p>import java.util.*;</p><p style="TEXT-INDENT: 2em"> </p><p><br />public class JRDataSourceAdapter<br />{<br />    public static Map JRDataSource2Map(JRDataSource dataSource, String[] fieldNames,<br />        Class[] fieldClasses) throws JRException<br />    {<br />        HashMap result;</p><p style="TEXT-INDENT: 2em"> </p><p>        if (fieldNames.length != fieldClasses.length)<br />        {<br />            throw new JRException("Number of Field Name &amp; Class unmatch");<br />        }</p><p style="TEXT-INDENT: 2em"> </p><p>        JRDesignField[] fields = new JRDesignField[fieldNames.length];</p><p style="TEXT-INDENT: 2em"> </p><p>        result = new HashMap(4);</p><p style="TEXT-INDENT: 2em"> </p><p>        for (int i = 0; i &lt; fieldNames.length; i++)<br />        {<br />            fields[i] = new JRDesignField();<br />            fields[i].setName(fieldNames[i]);<br />            fields[i].setValueClass(fieldClasses[i]);<br />            result.put(fieldNames[i], new ArrayList());<br />        }</p><p style="TEXT-INDENT: 2em"> </p><p>        do<br />        {<br />            for (int i = 0; i &lt; fields.length; i++)<br />            {<br />                Object value = dataSource.getFieldValue(fields[i]);<br />                ((ArrayList) result.get(fields[i].getName())).add(value);<br />            }<br />        }<br />        while (dataSource.next());</p><p style="TEXT-INDENT: 2em"> </p><p>        return result;<br />    }<br />}<br /></p><p style="TEXT-INDENT: 2em"> </p><p> </p><p style="TEXT-INDENT: 2em"> </p><p>/**<br /> * </p><p style="TEXT-INDENT: 2em"> </p><p>Title: GraphProvider</p><br /> * 
<p style="TEXT-INDENT: 2em"> </p><p>Description: Generate JFreeChart Image</p><br /> * 
<p style="TEXT-INDENT: 2em"> </p><p>Copyright: Copyright (c) 2004</p><br /> * 
<p style="TEXT-INDENT: 2em"> </p><p>Company: ****</p><br /> * @author zephyr <br /> * @version 1.0<br /> */<br />package xyz; 
<p style="TEXT-INDENT: 2em"> </p><p> </p><p style="TEXT-INDENT: 2em"> </p><p>import net.sf.jasperreports.engine.*;<br />import net.sf.jasperreports.engine.design.*;<br />import net.sf.jasperreports.engine.export.*;</p><p style="TEXT-INDENT: 2em"> </p><p>import org.jfree.chart.*;<br />import org.jfree.chart.axis.*;<br />import org.jfree.chart.plot.*;</p><p style="TEXT-INDENT: 2em"> </p><p>import org.jfree.data.*;</p><p style="TEXT-INDENT: 2em"> </p><p>import java.awt.*;<br />import java.awt.image.*;</p><p style="TEXT-INDENT: 2em"> </p><p>import java.io.*;</p><p style="TEXT-INDENT: 2em"> </p><p>import java.util.*;</p><p style="TEXT-INDENT: 2em"> </p><p><br />public class GraphProvider<br />{<br />    public static Image getImage(Map dataSource, String fieldNameX, String fieldNameY,<br />        String chartName, String titleX, String titleY, boolean isBarChart, int imageWidth,<br />        int imageHeight) throws JRException<br />    {<br />        JRDesignField fieldX = new JRDesignField();<br />        fieldX.setName(fieldNameX);<br />        fieldX.setValueClass(java.lang.String.class);</p><p style="TEXT-INDENT: 2em"> </p><p>        JRDesignField fieldY = new JRDesignField();<br />        fieldY.setName(fieldNameY);<br />        fieldY.setValueClass(java.lang.Double.class);</p><p style="TEXT-INDENT: 2em"> </p><p>        ArrayList periods = (ArrayList) dataSource.get(fieldNameX);<br />        ArrayList values = (ArrayList) dataSource.get(fieldNameY);</p><p style="TEXT-INDENT: 2em"> </p><p>        DefaultCategoryDataset categoryDs = new DefaultCategoryDataset();</p><p style="TEXT-INDENT: 2em"> </p><p>        for (int i = 0; i &lt; values.size(); i++)<br />        {<br />            Object obj = values.get(i);<br />            double dataValue = 0;</p><p style="TEXT-INDENT: 2em"> </p><p>            if (obj != null)<br />            {<br />                dataValue = ((Double) obj).doubleValue();<br />            }</p><p style="TEXT-INDENT: 2em"> </p><p>            categoryDs.addValue(dataValue, null, (String) periods.get(i));<br />        }</p><p style="TEXT-INDENT: 2em"> </p><p>        JFreeChart c = null;</p><p style="TEXT-INDENT: 2em"> </p><p>        if (isBarChart)<br />        {<br />            c = ChartFactory.createBarChart(chartName, titleX, titleY, categoryDs,<br />                    PlotOrientation.VERTICAL, false, false, false);<br />        }<br />        else<br />        {<br />            c = ChartFactory.createLineChart(chartName, titleX, titleY, categoryDs,<br />                    PlotOrientation.VERTICAL, false, false, false);<br />        }</p><p style="TEXT-INDENT: 2em"> </p><p>        c.getTitle().setFont(new Font("Arial", Font.BOLD, 16));</p><p style="TEXT-INDENT: 2em"> </p><p>        NumberAxis axis = (NumberAxis) c.getCategoryPlot().getRangeAxis();<br />        axis.setAutoRange(true);</p><p style="TEXT-INDENT: 2em"> </p><p>        TickUnitSource tickUnits = NumberAxis.createIntegerTickUnits();<br />        axis.setStandardTickUnits(tickUnits);</p><p style="TEXT-INDENT: 2em"> </p><p>        return (c.createBufferedImage(imageWidth, imageHeight));</p><p style="TEXT-INDENT: 2em"> </p><p>       }<br />}<br /></p><img src ="http://www.aygfsteel.com/terrywu/aggbug/49461.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/terrywu/" target="_blank">吴志�?/a> 2006-06-01 10:36 <a href="http://www.aygfsteel.com/terrywu/articles/49461.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>使用JfreeChart开发图表经验�ȝ�� </title><link>http://www.aygfsteel.com/terrywu/articles/49460.html</link><dc:creator>吴志�?/dc:creator><author>吴志�?/author><pubDate>Thu, 01 Jun 2006 02:34:00 GMT</pubDate><guid>http://www.aygfsteel.com/terrywu/articles/49460.html</guid><wfw:comment>http://www.aygfsteel.com/terrywu/comments/49460.html</wfw:comment><comments>http://www.aygfsteel.com/terrywu/articles/49460.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/terrywu/comments/commentRss/49460.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/terrywu/services/trackbacks/49460.html</trackback:ping><description><![CDATA[&nbsp;&nbsp;&nbsp;&nbsp; 摘要: 生成��Z�����览器的图表方式比较多。据我所知道的，常用的有三种�Q?				
		
		
				
						
								
										1�?										      
								
						
						
								VML
						
				
				
						方式实现。这�U�方式是通过产生客户端的代码�Q�由客户端根据代码生成相�?..&nbsp;&nbsp;<a href='http://www.aygfsteel.com/terrywu/articles/49460.html'>阅读全文</a><img src ="http://www.aygfsteel.com/terrywu/aggbug/49460.html" width = "1" height = "1" /><br><br><div align=right><a style="text-decoration:none;" href="http://www.aygfsteel.com/terrywu/" target="_blank">吴志�?/a> 2006-06-01 10:34 <a href="http://www.aygfsteel.com/terrywu/articles/49460.html#Feedback" target="_blank" style="text-decoration:none;">发表评论</a></div>]]></description></item><item><title>JFreeChart</title><link>http://www.aygfsteel.com/terrywu/articles/49430.html</link><dc:creator>吴志�?/dc:creator><author>吴志�?/author><pubDate>Thu, 01 Jun 2006 02:12:00 GMT</pubDate><guid>http://www.aygfsteel.com/terrywu/articles/49430.html</guid><wfw:comment>http://www.aygfsteel.com/terrywu/comments/49430.html</wfw:comment><comments>http://www.aygfsteel.com/terrywu/articles/49430.html#Feedback</comments><slash:comments>0</slash:comments><wfw:commentRss>http://www.aygfsteel.com/terrywu/comments/commentRss/49430.html</wfw:commentRss><trackback:ping>http://www.aygfsteel.com/terrywu/services/trackbacks/49430.html</trackback:ping><description><![CDATA[
		<pre>
				<div>
						<span style="FONT-WEIGHT: bold">一、jFreeChart产生囑�Ş的流�E?/span>
						<br />创徏一个数据源�Q�dataset�Q�来包含���要在图形中昄���的数�?????&gt;&gt;创徏一�?JFreeChart 对象来代表要昄���的图�?<br />??????&gt;&gt;把图形输�?<br />重要的类和接口： <br />org.jfree.data.general.Dataset 所有数据源�c�都要实现的接口 <br />org.jfree.chart.ChartFactory 由它来���?JFreeChart 对象 <br />org.jfree.chart.JFreeChart 所有对囑�Ş的调整都是通过它噢�Q�！ <br />org.jfree.chart.plot.Plot 通过JFreeChart 对象获得它，然后再通过它对囑�Ş外部部分�Q�例�Q�坐标��u�Q�调�?<br />注意�Q�它有很多子�c�，一般都下嗍造型到它的子�c�！ <br />org.jfree.chart.renderer.AbstractRenderer 通过JFreeChart 对象获得它，然后再通过它对囑�Ş内部部分 <br />�Q�例�Q�折�U�的�c�d���Q�调整。同��P��针对不同�c�d��的报表图�Q�它�?<br />着不同的子�c�d��玎ͼ�在下面我们简�U�它�?Renderer <br />下面我们�l�合不同�c�d��的图形来具体分析�q�个���程�?<br /><br /><span style="FONT-WEIGHT: bold">二、饼�?/span><br />饼图的dataset 一般是用PieDataset 接口�Q�具体实现类�?DefaultPieDataset <br />1、创��Z��个数据源�Q�dataset�Q�： <br />private static PieDataset createDataset() <br />{ <br />DefaultPieDataset defaultpiedataset = new DefaultPieDataset(); //注意是DefaultPieDataset�Q�！ <br />defaultpiedataset.setValue("One", new Double(43.200000000000003D)); <br />defaultpiedataset.setValue("Two", new Double(10D)); <br />defaultpiedataset.setValue("Three", new Double(27.5D)); <br />defaultpiedataset.setValue("Four", new Double(17.5D)); <br />return defaultpiedataset; <br />} <br />2、由ChartFactory 产生 JFreeChart 对象 <br />private static JFreeChart createChart(PieDataset piedataset) <br />{ <br />JFreeChart jfreechart = ChartFactory.createPieChart("Pie Chart Demo 1", //囑�Ş标题名称 <br />piedataset, // dataset <br />true, // legend? <br />true, // tooltips? <br />false); //URLs? <br />PiePlot pieplot = (PiePlot)jfreechart.getPlot(); //通过JFreeChart 对象获得 plot�Q�PiePlot�Q�！ <br />pieplot.setNoDataMessage("No data available"); // 没有数据的时候显�C�的内容 <br />return jfreechart; <br />} <br />一些重要的�Ҏ���Q?<br />pieplot.setExplodePercent(0,0.3D) //把Lable �?One" 的那一块”挖“出�?0% <br />3、输出略 <br /><br /><span style="FONT-WEIGHT: bold">三、柱状图</span><br />��q��囄���dataset 一般是用CatagoryDataset接口(具体实现�c�L��DefaultCategoryDataset),也会�?IntervalXYDataset <br />接口 <br />1、创��Z��个数据源�Q�dataset�Q�： <br />private static CategoryDataset createDataset() <br />{ <br />String series1 = "First"; <br />String series2 = "Second"; <br />String series3 = "Third"; <br />String category1 = "Category 1"; <br />String category2 = "Category 2"; <br />String category3 = "Category 3"; <br />String category4 = "Category 4"; <br />String category5 = "Category 5"; <br />DefaultCategoryDataset defaultcategorydataset = new DefaultCategoryDataset(); <br />defaultcategorydataset.addValue(1.0D, series1, category1); <br />defaultcategorydataset.addValue(4D, series1, category2); <br />defaultcategorydataset.addValue(3D, series1, category3); <br />defaultcategorydataset.addValue(5D, series1, category4); <br />defaultcategorydataset.addValue(5D, series1, category5); <br /><br />defaultcategorydataset.addValue(5D, series2, category1); <br />defaultcategorydataset.addValue(7D, series2, category2); <br />defaultcategorydataset.addValue(6D, series2, category3); <br />defaultcategorydataset.addValue(8D, series2, category4); <br />defaultcategorydataset.addValue(4D, series2, category5); <br /><br />defaultcategorydataset.addValue(4D, series3, category1); <br />defaultcategorydataset.addValue(3D, series3, category2); <br />defaultcategorydataset.addValue(2D, series3, category3); <br />defaultcategorydataset.addValue(3D, series3, category4); <br />defaultcategorydataset.addValue(6D, series3, category5); <br />return defaultcategorydataset; <br />} <br />2、由ChartFactory 产生 JFreeChart 对象 <br />private static JFreeChart createChart(CategoryDataset categorydataset) <br />{ <br />JFreeChart jfreechart = ChartFactory.createBarChart("Bar Chart Demo", //囑�Ş标题名称 <br />"Category",//domain �?Lable <br />�q�里先简单理解�ؓ横坐标Lable好了 <br />"Value", //range �?Lable <br />�q�里也先���单理解�ؓ�U�坐标Lable好了 <br />categorydataset, // dataset <br />PlotOrientation.VERTICAL, //垂直昄��� <br />true, // legend? <br />true, // tooltips? <br />false); //URLs? <br />jfreechart.setBackgroundPaint(Color.white); //讑֮�背景色�ؓ白色 <br />CategoryPlot categoryplot = jfreechart.getCategoryPlot(); //获得 plot�Q�CategoryPlot�Q�！ <br />categoryplot.setBackgroundPaint(Color.lightGray); //讑֮�图表数据昄���部分背景�?<br />categoryplot.setDomainGridlinePaint(Color.white); //横坐标网格线白色 <br />categoryplot.setDomainGridlinesVisible(true); //可见 <br />categoryplot.setRangeGridlinePaint(Color.white); //�U�坐标网格线白色 <br />//下面两行使纵坐标的最���单位格为整�?<br />NumberAxis numberaxis = (NumberAxis)categoryplot.getRangeAxis(); <br />numberaxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits()); <br />BarRenderer barrenderer = (BarRenderer)categoryplot.getRenderer(); //获得renderer 注意�q�里是下嗍造型 <br />到BarRenderer�Q�！ <br />barrenderer.setDrawBarOutline(false); // Bar的外轮廓�U�不�?<br />GradientPaint gradientpaint = new GradientPaint(0.0F, 0.0F, Color.blue, <br />0.0F, 0.0F, new Color(0, 0, 64)); //讑֮�特定颜色 <br />GradientPaint gradientpaint1 = new GradientPaint(0.0F, 0.0F, Color.green, <br />0.0F, 0.0F, new Color(0, 64, 0)); <br />GradientPaint gradientpaint2 = new GradientPaint(0.0F, 0.0F, Color.red, <br />0.0F, 0.0F, new Color(64, 0, 0)); <br />barrenderer.setSeriesPaint(0, gradientpaint); //�l�series1 Bar讑֮�上面定义的颜�?<br />barrenderer.setSeriesPaint(1, gradientpaint1); //�l�series2 Bar 讑֮�上面定义的颜�?<br />barrenderer.setSeriesPaint(2, gradientpaint2); //�l�series3 Bar 讑֮�上面定义的颜�?<br />CategoryAxis categoryaxis = categoryplot.getDomainAxis(); //横��u上的 Lable 45度倾斜 <br />categoryaxis.setCategoryLabelPositions(CategoryLabelPositions.UP_45); <br />return jfreechart; <br />} <br />一些重要的�Ҏ���Q�（增加一块标讎ͼ� <br />IntervalMarker intervalmarker = new IntervalMarker(4.5D, 7.5D); <br />intervalmarker.setLabel("Target Range"); <br />intervalmarker.setLabelFont(new Font("SansSerif", 2, 11)); <br />intervalmarker.setLabelAnchor(RectangleAnchor.LEFT); <br />intervalmarker.setLabelTextAnchor(TextAnchor.CENTER_LEFT); <br />intervalmarker.setPaint(new Color(222, 222, 255, 128)); <br />categoryplot.addRangeMarker(intervalmarker, Layer.BACKGROUND); <br /><br /><span style="FONT-WEIGHT: bold">四、折�U�图</span><br />折线囄���dataset 两种CatagoryDataset接口(具体实现�c�L��DefaultCategoryDataset),XYDataset 接口 <br />1、CatagoryDataset接口�Q?<br />A、创��Z��个数据源�Q�dataset�Q�： <br />private static CategoryDataset createDataset() <br />{ <br />String series1 = "First"; <br />String series2 = "Second"; <br />String series3 = "Third"; <br />String type1 = "Type 1"; <br />String type2 = "Type 2"; <br />String type3 = "Type 3"; <br />String type4 = "Type 4"; <br />String type5 = "Type 5"; <br />String type6 = "Type 6"; <br />String type7 = "Type 7"; <br />String type8 = "Type 8"; <br />DefaultCategoryDataset defaultcategorydataset = new DefaultCategoryDataset(); <br />defaultcategorydataset.addValue(1.0D, series1, type1); <br />defaultcategorydataset.addValue(4D, series1, type2); <br />defaultcategorydataset.addValue(3D, series1, type3); <br />defaultcategorydataset.addValue(5D, series1, type4); <br />defaultcategorydataset.addValue(5D, series1, type5); <br />defaultcategorydataset.addValue(7D, series1, type6); <br />defaultcategorydataset.addValue(7D, series1, type7); <br />defaultcategorydataset.addValue(8D, series1, type8); <br /><br />defaultcategorydataset.addValue(5D, series2, type1); <br />defaultcategorydataset.addValue(7D, series2, type2); <br />defaultcategorydataset.addValue(6D, series2, type3); <br />defaultcategorydataset.addValue(8D, series2, type4); <br />defaultcategorydataset.addValue(4D, series2, type5); <br />defaultcategorydataset.addValue(4D, series2, type6); <br />defaultcategorydataset.addValue(2D, series2, type7); <br />defaultcategorydataset.addValue(1.0D, series2, type8); <br /><br />defaultcategorydataset.addValue(4D, series3, type1); <br />defaultcategorydataset.addValue(3D, series3, type2); <br />defaultcategorydataset.addValue(2D, series3, type3); <br />defaultcategorydataset.addValue(3D, series3, type4); <br />defaultcategorydataset.addValue(6D, series3, type5); <br />defaultcategorydataset.addValue(3D, series3, type6); <br />defaultcategorydataset.addValue(4D, series3, type7); <br />defaultcategorydataset.addValue(3D, series3, type8); <br />return defaultcategorydataset; <br />} <br />B、由ChartFactory 产生 JFreeChart 对象 (与上面重复的部分��׃��再注释） <br />private static JFreeChart createChart(CategoryDataset categorydataset) <br />{ <br />JFreeChart jfreechart = ChartFactory.createLineChart("Line Chart Demo 1", <br />"Type", <br />"Value", <br />categorydataset, <br />PlotOrientation.VERTICAL, <br />true, <br />true, <br />false); <br />jfreechart.setBackgroundPaint(Color.white); <br />CategoryPlot categoryplot = (CategoryPlot)jfreechart.getPlot(); <br />categoryplot.setBackgroundPaint(Color.lightGray); <br />categoryplot.setRangeGridlinePaint(Color.white); <br />NumberAxis numberaxis = (NumberAxis)categoryplot.getRangeAxis(); <br />numberaxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits()); <br />numberaxis.setAutoRangeIncludesZero(true); <br />//获得renderer 注意�q�里是下嗍造型到lineandshaperenderer�Q�！ <br />LineAndShapeRenderer lineandshaperenderer = (LineAndShapeRenderer)categoryplot.getRenderer(); <br />lineandshaperenderer.setShapesVisible(true); //series 点（��x��据点�Q�可�?<br />lineandshaperenderer.setSeriesStroke(0, new BasicStroke(2.0F, 1, 1, 1.0F, new float[] { <br />10F, 6F <br />}, 0.0F)); //定义series�?First"的（即series1�Q�点之间的连�U?�Q�这里是虚线�Q�默认是直线 <br />lineandshaperenderer.setSeriesStroke(1, new BasicStroke(2.0F, 1, 1, 1.0F, new float[] { <br />6F, 6F <br />}, 0.0F)); //定义series�?Second"的（即series2�Q�点之间的连�U?<br />lineandshaperenderer.setSeriesStroke(2, new BasicStroke(2.0F, 1, 1, 1.0F, new float[] { <br />2.0F, 6F <br />}, 0.0F)); //定义series�?Third"的（即series3�Q�点之间的连�U?<br />return jfreechart; <br />} <br />一些重要的�Ҏ���Q?<br />lineandshaperenderer.setLineVisible(true) //series 点（��x��据点�Q�间有连�U�可�?<br />2、XYDataset 接口�Q?<br />A、创��Z��个数据源�Q�dataset�Q�： <br />private static XYDataset createDataset() <br />{ <br />XYSeries xyseries = new XYSeries("First"); //先��生XYSeries 对象 <br />xyseries.add(1.0D, 1.0D); <br />xyseries.add(2D, 4D); <br />xyseries.add(3D, 3D); <br />xyseries.add(4D, 5D); <br />xyseries.add(5D, 5D); <br />xyseries.add(6D, 7D); <br />xyseries.add(7D, 7D); <br />xyseries.add(8D, 8D); <br /><br />XYSeries xyseries1 = new XYSeries("Second"); <br />xyseries1.add(1.0D, 5D); <br />xyseries1.add(2D, 7D); <br />xyseries1.add(3D, 6D); <br />xyseries1.add(4D, 8D); <br />xyseries1.add(5D, 4D); <br />xyseries1.add(6D, 4D); <br />xyseries1.add(7D, 2D); <br />xyseries1.add(8D, 1.0D); <br /><br />XYSeries xyseries2 = new XYSeries("Third"); <br />xyseries2.add(3D, 4D); <br />xyseries2.add(4D, 3D); <br />xyseries2.add(5D, 2D); <br />xyseries2.add(6D, 3D); <br />xyseries2.add(7D, 6D); <br />xyseries2.add(8D, 3D); <br />xyseries2.add(9D, 4D); <br />xyseries2.add(10D, 3D); <br /><br />XYSeriesCollection xyseriescollection = new XYSeriesCollection(); //再用XYSeriesCollection��d��入XYSeries 对象 <br />xyseriescollection.addSeries(xyseries); <br />xyseriescollection.addSeries(xyseries1); <br />xyseriescollection.addSeries(xyseries2); <br />return xyseriescollection; <br />} <br />B、由ChartFactory 产生 JFreeChart 对象 <br />private static JFreeChart createChart(XYDataset xydataset) <br />{ <br />JFreeChart jfreechart = ChartFactory.createXYLineChart("Line Chart Demo 2", <br />"X", <br />"Y", <br />xydataset, <br />PlotOrientation.VERTICAL, <br />true, <br />true, <br />false); <br />jfreechart.setBackgroundPaint(Color.white); <br />XYPlot xyplot = (XYPlot)jfreechart.getPlot(); //获得 plot�Q�XYPlot�Q�！ <br />xyplot.setBackgroundPaint(Color.lightGray); //讑֮�图表数据昄���部分背景�?<br />xyplot.setAxisOffset(new RectangleInsets(5D, 5D, 5D, 5D)); //讑֮�坐标轴与图表数据昄���部分距离 <br />xyplot.setDomainGridlinePaint(Color.white); //�|�格�U�K���?<br />xyplot.setRangeGridlinePaint(Color.white); <br />//获得 renderer 注意�q�里是XYLineAndShapeRenderer �Q�！ <br />XYLineAndShapeRenderer xylineandshaperenderer = (XYLineAndShapeRenderer)xyplot.getRenderer(); <br />xylineandshaperenderer.setShapesVisible(true); //数据点可�?<br />xylineandshaperenderer.setShapesFilled(true); //数据点被填充即不是空心点 <br />NumberAxis numberaxis = (NumberAxis)xyplot.getRangeAxis(); <br />numberaxis.setStandardTickUnits(NumberAxis.createIntegerTickUnits()); <br />return jfreechart; <br />} <br />一些重要的�Ҏ���Q?<br />XYLineAndShapeRenderer xylineandshaperenderer = new XYLineAndShapeRenderer(); <br />xylineandshaperenderer.setSeriesLinesVisible(0, false); //�W�一个XYSeries数据炚w���q�线不可�?<br />xylineandshaperenderer.setSeriesShapesVisible(1, false); //�W�二个XYSeries数据点不可见 <br />xyplot.setRenderer(xylineandshaperenderer); <br /><br /><span style="FONT-WEIGHT: bold">五、时间序列图</span><br />旉���序列囑֒�折线囑־��怼��Q�不同的是它�?domain轴的数据是时间而不是数字�?旉���序列囄���dataset �?<br />XYDataset 接口�Q�具体实现类是TimeSeriesCollection �Q�和上面�c�M���Q�有TimeSeries 对象�Q�它被添加入 <br />TimeSeriesCollection �?<br />1、创��Z��个数据源�Q�dataset�Q�： <br />private static XYDataset createDataset() <br />{ <br />TimeSeries timeseries = new TimeSeries("L&amp;G European Index Trust",Month.class); <br />timeseries.add(new Month(2, 2001), 181.8D);//�q�里用的是Month.class�Q�同栯���有Day.class Year.class �{�等 <br />timeseries.add(new Month(3, 2001), 167.3D); <br />timeseries.add(new Month(4, 2001), 153.8D); <br />timeseries.add(new Month(5, 2001), 167.6D); <br />timeseries.add(new Month(6, 2001), 158.8D); <br />timeseries.add(new Month(7, 2001), 148.3D); <br />timeseries.add(new Month(8, 2001), 153.9D); <br />timeseries.add(new Month(9, 2001), 142.7D); <br />timeseries.add(new Month(10, 2001), 123.2D); <br />timeseries.add(new Month(11, 2001), 131.8D); <br />timeseries.add(new Month(12, 2001), 139.6D); <br />timeseries.add(new Month(1, 2002), 142.9D); <br />timeseries.add(new Month(2, 2002), 138.7D); <br />timeseries.add(new Month(3, 2002), 137.3D); <br />timeseries.add(new Month(4, 2002), 143.9D); <br />timeseries.add(new Month(5, 2002), 139.8D); <br />timeseries.add(new Month(6, 2002), 137D); <br />timeseries.add(new Month(7, 2002), 132.8D); <br /><br />TimeSeries timeseries1 = new TimeSeries("L&amp;G UK Index Trust",Month.class); <br />timeseries1.add(new Month(2, 2001), 129.6D); <br />timeseries1.add(new Month(3, 2001), 123.2D); <br />timeseries1.add(new Month(4, 2001), 117.2D); <br />timeseries1.add(new Month(5, 2001), 124.1D); <br />timeseries1.add(new Month(6, 2001), 122.6D); <br />timeseries1.add(new Month(7, 2001), 119.2D); <br />timeseries1.add(new Month(8, 2001), 116.5D); <br />timeseries1.add(new Month(9, 2001), 112.7D); <br />timeseries1.add(new Month(10, 2001), 101.5D); <br />timeseries1.add(new Month(11, 2001), 106.1D); <br />timeseries1.add(new Month(12, 2001), 110.3D); <br />timeseries1.add(new Month(1, 2002), 111.7D); <br />timeseries1.add(new Month(2, 2002), 111D); <br />timeseries1.add(new Month(3, 2002), 109.6D); <br />timeseries1.add(new Month(4, 2002), 113.2D); <br />timeseries1.add(new Month(5, 2002), 111.6D); <br />timeseries1.add(new Month(6, 2002), 108.8D); <br />timeseries1.add(new Month(7, 2002), 101.6D); <br />TimeSeriesCollection timeseriescollection = new TimeSeriesCollection(); <br />timeseriescollection.addSeries(timeseries); <br />timeseriescollection.addSeries(timeseries1); <br />timeseriescollection.setDomainIsPointsInTime(true); //domain轴上的刻度点代表的是旉���点而不是时间段 <br />return timeseriescollection; <br />} <br />2、由ChartFactory 产生 JFreeChart 对象 <br />private static JFreeChart createChart(XYDataset xydataset) <br />{ <br />JFreeChart jfreechart = ChartFactory.createTimeSeriesChart("Legal &amp; General Unit Trust Prices", <br />"Date", <br />"Price Per Unit", <br />xydataset, <br />true, <br />true, <br />false); <br />jfreechart.setBackgroundPaint(Color.white); <br />XYPlot xyplot = (XYPlot)jfreechart.getPlot(); //获得 plot : XYPlot!! <br />xyplot.setBackgroundPaint(Color.lightGray); <br />xyplot.setDomainGridlinePaint(Color.white); <br />xyplot.setRangeGridlinePaint(Color.white); <br />xyplot.setAxisOffset(new RectangleInsets(5D, 5D, 5D, 5D)); <br />xyplot.setDomainCrosshairVisible(true); <br />xyplot.setRangeCrosshairVisible(true); <br />org.jfree.chart.renderer.xy.XYItemRenderer xyitemrenderer = xyplot.getRenderer(); <br />if(xyitemrenderer instanceof XYLineAndShapeRenderer) <br />{ <br />XYLineAndShapeRenderer xylineandshaperenderer = (XYLineAndShapeRenderer)xyitemrenderer; <br />xylineandshaperenderer.setDefaultShapesVisible(true); //数据点可�?<br />xylineandshaperenderer.setDefaultShapesFilled(true); //数据�Ҏ��实心�?<br />} <br />DateAxis dateaxis = (DateAxis)xyplot.getDomainAxis(); //对domain 轴上日期昄���格式定义 <br />dateaxis.setDateFormatOverride(new SimpleDateFormat("MMM-yyyy")); <br />return jfreechart; <br />} <br />一些重要的�Ҏ���Q?<br />A、增加标记线�Q?<br />xyplot.addRangeMarker(new ValueMarker(550D)); //数��D�u <br />Quarter quarter = new Quarter(2, 2002); <br />xyplot.addDomainMarker(new ValueMarker(quarter.getMiddleMillisecond())); //旉����?<br />B、数据点的调�?<br />XYLineAndShapeRenderer xylineandshaperenderer = (XYLineAndShapeRenderer)xyplot.getRenderer(); <br />xylineandshaperenderer.setDefaultShapesVisible(true); //数据点可�?<br />xylineandshaperenderer.setSeriesFillPaint(0, Color.red); //数据点填充�ؓ�U�色 <br />xylineandshaperenderer.setSeriesFillPaint(1, Color.white); //数据点填充�ؓ白色 <br />xylineandshaperenderer.setUseFillPaint(true); //应用 <br />C、��^均值曲�U?<br />�q�个曲线有什么用呢？很简单的例子�Q�这里有一个以半年每天为单位的数据�l�制的曲�U�，我们想看看以月�ؓ单位数据 <br />的变化，�q�时���可以用到它了�?<br />TimeSeries timeseries = createEURTimeSeries(); //���是以半�q�每天�ؓ单位的数�?<br />TimeSeries timeseries1 = MovingAverage.createMovingAverage(timeseries, <br />"30 day moving average", <br />30, //30天�ؓ一个周�?<br />30); //最开始的30天蟩�q?<br />TimeSeriesCollection timeseriescollection = new TimeSeriesCollection(); <br />timeseriescollection.addSeries(timeseries); <br />timeseriescollection.addSeries(timeseries1); <br />return timeseriescollection; <br /><br /><span style="FONT-WEIGHT: bold">六、�ȝ��一�?/span><br />dataset plot renderer <br />饼图 PieDataset�Q�DefaultPieDataset�Q?PiePlot ------ <br />��q���?CatagoryDataset�Q�DefaultCategoryDataset�Q?CategoryPlot BarRenderer <br />折线�?CatagoryDataset�Q�DefaultCategoryDataset�Q?CategoryPlot LineAndShapeRenderer <br />XYDataset�Q�XYSeriesCollection�Q?XYPlot XYLineAndShapeRenderer <br />旉���序列�?XYDataset �Q�TimeSeriesCollection�Q?XYPlot XYLineAndShapeRenderer <br />�q�里只是一些常用的�Ҏ���Q�具体还是看API <br /><span style="FONT-WEIGHT: bold">七、Item Lable</span><br />�q�里以柱状图��Z��说明�Q�具体来说就是在每个��q��上显�C�它的数据，具体有下面内容： <br />A、�� Item Lable 可见 <br />B、调�?Item Lable 的颜艌Ӏ�字体等 <br />C、调�?Item Lable 的位�|?<br />D、定�?Item Lable 的内�?<br />1、分配一�?Lable Generator �l?renderer <br />BarRenderer barrenderer = (BarRenderer)categoryplot.getRenderer(); <br />GategoryLableGenerator generator =new StandardGategoryLableGenerator( <br />"{2}", new DecimalFormat("0.00") //调整昄���的数字和字符格式 <br />); <br />barrenderer.setLableGenerator(generator); <br />2、�� Item Lable 可见 <br />barrenderer.setItemLableVisible(true); <br />3、调�?Item Lable 的颜艌Ӏ�字体等 <br />barrenderer.setItemLablePaint(Color.red); <br />barrenderer.setItemLableFont(new Font("SansSerif",Font.PLAIN,10)); <br />4、调�?Item Lable 的位�|?<br />�q�里涉及��C��个新的对�?ItemLablePosition , ItemLablePosition的构造函数有两个或四个参�?<br />public ItemLabelPosition(ItemLabelAnchor itemLabelAnchor, <br />org.jfree.ui.TextAnchor textAnchor, <br />org.jfree.ui.TextAnchor rotationAnchor, <br />double angle) <br />itemLabelAnchor - Item Lable 的位�|?�Q�最重要的！�Q�） <br />textAnchor - Item Lable里包含的正文相对于Item Lable 的位�|?<br />rotationAnchor - Item Lable里包含的正文旋�{的位�|?<br />angle - 旋�{的角�?<br />ItemLabelPosition itemlabelposition = new ItemLabelPosition(ItemLabelAnchor.INSIDE12, <br />TextAnchor.CENTER_RIGHT, <br />TextAnchor.CENTER_RIGHT, <br />-1.57D); <br />barrenderer.setPositiveItemLabelPosition(itemlabelposition); <br />�q�样���可以每个柱状上昄���它的数据了，当然可以定制 Item Lable 的内容，比如 Item Lable text ���过100的才 <br />昄����Q�这样就需要定制自��q���c�，它要实现GategoryLableGenerator 接口�Q�实现generateItemLable()�Ҏ��</div>
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		</pre>
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