Posted on 2009-12-28 14:31
landor 閱讀(1389)
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導出與圖表
//訪問量統計時間線
TimeSeries timeSeries = new TimeSeries("數字統計1", Month.class);
//時間數據集合
TimeSeriesCollection lineDataset = new TimeSeriesCollection();
//構造數據
timeSeries.add(new Month(1, 2009), 100);
timeSeries.add(new Month(2, 2009), 200);
timeSeries.add(new Month(3, 2009), 100);
timeSeries.add(new Month(4, 2009), 200);
timeSeries.add(new Month(5, 2009), 100);
timeSeries.add(new Month(6, 2009), 200);
timeSeries.add(new Month(7, 2009), 100);
timeSeries.add(new Month(8, 2009), 200);
timeSeries.add(new Month(9, 2009), 100);
timeSeries.add(new Month(10, 2009), 200);
timeSeries.add(new Month(11, 2009), 100);
timeSeries.add(new Month(12, 2009), 200);
lineDataset.addSeries(timeSeries);//填入集合
JFreeChart chart = ChartFactory.createTimeSeriesChart("數字統計圖", "月份", "數字", lineDataset, true, true, true);
//設置標題字體
chart.getTitle().setFont(new Font("黑體", 12, 12));
chart.getLegend().setItemFont(new Font("宋體",Font.PLAIN,12));
XYPlot plot = (XYPlot) chart.getPlot();
NumberAxis rangeAxis = (NumberAxis) plot.getRangeAxis();
ValueAxis domainAxis = plot.getDomainAxis();
//當timeSeries為null時，顯示
plot.setNoDataMessage("沒有數據顯示");
//設置X軸坐標上的字體
domainAxis.setTickLabelFont(new Font("sans-serif",Font.PLAIN,11));
//設置X軸的標題字體
domainAxis.setLabelFont(new Font("宋體",Font.PLAIN,12));
//設置Y軸坐標上的字體
rangeAxis.setTickLabelFont(new Font("sans-serif",Font.PLAIN,12));
//設置Y軸的標題字體
rangeAxis.setLabelFont(new Font("黑體",Font.PLAIN,12));
ChartUtilities.writeChartAsJPEG(response.getOutputStream(),chart,500,300);
out.clear();
pageContext.pushBody();