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Jakarta Commons BeanUtils 學習

參考：http://www.duduwolf.com/wiki/2007/296.html
????? http://www.chinaitpower.com/A/2005-07-03/150232.html
1)普通的Bean處理? 不管是什么Set參數為3個 ( 對象本身, 屬性名或屬性內位置, 值 ) //list的add有點特別
??? ??? ??? ??? ? ??? ??? ? Get參數為2個( 對象本身, 屬性名或屬性內位置 )
??

????????Employee?em?=?new?Employee();? //String name; String[] ss;? Map map; List list;
????????BeanUtils.setProperty(em,"name","liukaiyi");? //String set
????????BeanUtils.setProperty(em,"ss",new?String[]{"1","2","3"}); //String[] set
??????? ?? BeanUtils.setProperty(em,"ss[2]","google");? //String[2] set

????????BeanUtils.setProperty(em,"map",new?HashMap());?? //Map set?
????????????BeanUtils.setProperty(em,"map(key)","value");? //Map.put(Key,Value)
????????????
????????BeanUtils.setProperty(em,"list",new?ArrayList(?Arrays.asList(?new?Object[20]?)?)); //List有點特別
????????????BeanUtils.setProperty(em,"list[0]","list");?????? //不可以直接添加？？？
????????????
????????BeanUtils.setProperty(em,"avg","23");?????? //int set
????????????????
????????
????????System.out.println(?BeanUtils.getSimpleProperty(em,"name")?);???
????????System.out.println(?BeanUtils.getProperty(em,"ss[2]")?);
????????System.out.println(?BeanUtils.getProperty(em,"map(key)")?);
????????
????????System.out.println(?BeanUtils.getProperty(em,"list[0].class")?);? // 取的是 ==list.get(0).getClass()
????????
????????System.out.println(?BeanUtils.getProperty(em,"avg")?);?

2)動態屬性

?//定義動態屬性集
?DynaProperty[]?props?=?new?DynaProperty[]{
????new?DynaProperty("address",?java.util.Map.class),
????new?DynaProperty("subordinate",?mypackage.Employee[].class),
????new?DynaProperty("firstName",?String.class),
????new?DynaProperty("lastName",??String.class)
??????};
?//創建動態類來設定動態屬性值
????BasicDynaClass?dynaClass?=?new?BasicDynaClass("employee",?null,?props);
??? DynaBean?employee?=?dynaClass.newInstance();
????employee.set("address",?new?HashMap());
????employee.set("subordinate",?new?mypackage.Employee[0]);
????employee.set("firstName",?"Fred");
????employee.set("lastName",?"Flintstone");

//也可以同上一樣提供統一的Get Set 還是字符操作 ^o^? 哈哈
??? ???? BeanUtils.setProperty(bean,"address",new HashMap());
??? ??? ???? BeanUtils.setProperty(bean,"address(ads1)","江西");
??? ??? ?BeanUtils.setProperty(bean,"name","liu");
??? ??? ?BeanUtils.setProperty(bean,"subordinate",new String[3]);
??? ??? ???? BeanUtils.setProperty(bean,"subordinate[1]","heha");
??? ??? ?System.out.println(? BeanUtils.getProperty(bean,"address(ads1)") );
??? ??? ?System.out.println(? BeanUtils.getProperty(bean,"name") );
??? ??? ?System.out.println(? BeanUtils.getProperty(bean,"subordinate[1]") );

3）JDBC 擴展

?Connection?conn?=?

;
????Statement?stmt?=?conn.createStatement();
????ResultSet?rs?=?stmt.executeQuery
????("select?accountid,?name?from?customers");
????Iterator?rows?=?(new?ResultSetDynaClass(rs)).iterator();? //ResultSetDynaClass(java.sql.ResultSet resultSet)
????while?(rows.hasNext())?{
?//利用動態bean進行輸出
????DynaBean?row?=?(DynaBean)?rows.next();?? //連實體Bean都可以不要了?
??? ??? BeanUtils.copyProperties( MyBean ,row );? //? bean<--dynaBean 就這樣去得到值 ^o^?
??? ?? ?? MyBean.getAccountid();? ....???????????
????}
????rs.close();
????stmt.close();

4)HttpServletRequest 擴展

????HttpServletRequest?request?=?

;
????MyBean?bean?=?

;
????HashMap?map?=?new?HashMap();
????Enumeration?names?=?request.getParameterNames();
????while?(names.hasMoreElements())?{
??????String?name?=?(String)?names.nextElement();
??????map.put(name,?request.getParameterValues(name));
????}
????BeanUtils.populate(bean,?map);//bean<--map? struts好象是就用這個 Form

posted @ 2007-08-10 10:36 G_G 閱讀(1269) | 評論 (0) | 編輯收藏

Struts validation 小例

問題： 當IE 禁用javascript 怎么驗證數據
解決：Struts validation? 框架

1）先建 Form類?? extendsValidatorForm
???

????private?String?name?;
????private?String?pass?;???

2) Jsp 建立

??<body>
??????<font?color="red"?><html:errors/></font>
????<html:form?action="/test">
????????name:<html:text?property="name"?/>
????????pass:<html:text?property="pass"?/>
????????<html:submit>submit</html:submit>
????</html:form>
??</body>

3）validator.xml建立

<?xml?version='1.0'?>
<!DOCTYPE?form-validation?PUBLIC
??????????"-//Apache?Software?Foundation//DTD?Commons?Validator?Rules?Configuration?1.0//EN"
??????????"http://jakarta.apache.org/commons/dtds/validator_1_0.dtd">
??????????
<form-validation>
????<formset>
????????<form?name="testForm">
????????????<field?property="name"?depends="minlength,maxlength,mask">
????????????????<msg?name="minlength"?key="err.minlength"?/>?
??????????????? 
????????????????<msg?name="maxlength"?key="err.maxlength"?/>
????????????????<arg0?key="${var:maxlength}"??resource="false"/>
????????????????<arg1?key="${var:minlength}"?resource="false"/>
????????????????<var>
????????????????????<var-name>maxlength</var-name>
????????????????????<var-value>5</var-value>
????????????????</var>
????????????????<var>
????????????????????<var-name>minlength</var-name>
????????????????????<var-value>3</var-value>
????????????????</var>
????????????</field>
????????????????
????????</form>
????</formset>
</form-validation>

4)ApplicationResources.properties

#?Resources?for?parameter?'com.validator.struts.ApplicationResources'
#?Project?P/validator
err.minlength=?err?min?<?3
err.maxlength=?err?max?>?5

心得： validation? 這是個難啃的骨頭要多多的接觸

posted @ 2007-08-09 12:03 G_G 閱讀(1479) | 評論 (0) | 編輯收藏

java Xpath 小例

java

package?test;

import?java.io.StringWriter;

import?javax.xml.parsers.DocumentBuilder;
import?javax.xml.parsers.DocumentBuilderFactory;
import?javax.xml.transform.TransformerFactory;
import?javax.xml.transform.dom.DOMSource;
import?javax.xml.transform.stream.StreamResult;
import?javax.xml.xpath.XPath;
import?javax.xml.xpath.XPathExpression;
import?javax.xml.xpath.XPathFactory;

import?org.w3c.dom.Document;
import?org.w3c.dom.Element;

import?com.opensymphony.xwork2.ActionSupport;

public?class?TAction?extends?ActionSupport?{
????private?String?xml1;
????public?String?getXml1()?{
????????return?xml1;
????}
????public?void?setXml1(String?xml1)?{
????????this.xml1?=?xml1;
????}
????{
????????
????????try?{
????????????DocumentBuilderFactory?factory?=?DocumentBuilderFactory
????????????????????.newInstance();
????????????DocumentBuilder?builder?=?factory.newDocumentBuilder();

????????????//?創建
????????????Document?document?=?builder.newDocument();
????????????Element?root?=?document.createElement("root");
????????????document.appendChild(root);
????????????Element?name?=?document.createElement("name");
????????????name.setAttribute("type",?"ok");
????????????name.appendChild(document.createTextNode("liu!k>a^i!@$^*><{}yi"));
????????????root.appendChild(name);

????????????//?從數據庫提取
????????????//?String?xmlstr=?"<beans><name>liu</name><pass>123</pass></beans>";
????????????//?builder.parse(new?ByteArrayInputStream(str.getBytes()));

????????????//?save?to?mysql
????????????StringWriter?output?=?new?StringWriter();
????????????TransformerFactory.newInstance().newTransformer().transform(
????????????????????new?DOMSource(document),?new?StreamResult(output));
????????????//System.out.println(output.toString());

????????????//?對內展現
????????????XPathFactory?factoryXpah?=?XPathFactory.newInstance();
????????????XPath?xpath?=?factoryXpah.newXPath();
????????????XPathExpression?expr?=?xpath.compile("//name");
????????????System.out.println(expr.evaluate(document));
????????????expr?=?xpath.compile("//name/@type");
????????????//System.out.println(expr.evaluate(document));

????????????//?對jsp?jstl?xml
????????????//?參考?http://www.java2s.com/Code/Java/JSP/XML.htm

????????????this.xml1?=?output.toString().replaceAll("<\\?.*\\?>",?"");
????????}?catch?(Exception?e)?{
????????????e.printStackTrace();
????????}
????}
????public?static?void?main(String[]?args)?{
????????System.out.println(new?TAction().getXml1());
????}
????

}

jsp

<%@?page?language="java"?contentType="text/html;?charset=UTF-8"?pageEncoding="UTF-8"%>
<%@taglib?uri="http://java.sun.com/jstl/xml_rt"?prefix="x"%>
<%@taglib?uri="http://java.sun.com/jstl/core_rt"?prefix="c"%>
<html>
<head>
<meta?http-equiv="Content-Type"?content="text/html;?charset=UTF-8">
</head>
<body>

????<c:set?var="basepath"?value="<%=request.getScheme()?+?"://"?+?request.getServerName()?+?":"?+?request.getServerPort()?+?request.getContextPath()?+?"/"?%>"></c:set>
????<c:import?url="${basepath}/infoPublishing.do?c=showXmlData&bid=63"?var="webXml"?/>
????<x:parse?xml="${webXml}"?var="doc"?/>
?????類型：<x:out?select="$doc//typeFlag"/><br?/>
?????qq：<x:out?select="$doc//qq"/><br?/>
?????msn：<x:out?select="$doc//msn"/><br?/>

</body>
</html>

posted @ 2007-08-03 15:46 G_G| 編輯收藏

EL 標簽小例

問題： jsp 的簡化與統一性
解決： EL 標簽

jsp.頁面

<%@?taglib?prefix="fn"?uri="/WEB-INF/fn.tld"?%>
<%@?taglib?prefix="c"?uri="/WEB-INF/c-1_0-rt.tld"?%>
<%@?taglib?prefix="x"?uri="/WEB-INF/x-1_0-rt.tld"?%>
<%@?page?isELIgnored="false" %>
<%@?page?language="java"?import="java.util.*"?pageEncoding="UTF-8"%>

<%
String?path?=?request.getContextPath();
String?basePath?=?request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>

<!DOCTYPE?HTML?PUBLIC?"-//W3C//DTD?HTML?4.01?Transitional//EN">
<html>
??<head>
????<base?href="<%=basePath%>">
????
????<title>My?JSP?'MyJsp.jsp'?starting?page</title>
????
????<meta?http-equiv="pragma"?content="no-cache">
????<meta?http-equiv="cache-control"?content="no-cache">
????<meta?http-equiv="expires"?content="0">
????<meta?http-equiv="keywords"?content="keyword1,keyword2,keyword3">
????<meta?http-equiv="description"?content="This?is?my?page">
????
????
??</head>
??
??<body>
???? <c:set?var="url"><%=basePath%>/xml</c:set>
????<c:import?var="xmlDoc"?url="${url}"/>
????<x:parse?xml="${xmlDoc}"?var="doc"?/> ?? ??? ??? ??? ??? ??? ??? ??? ???? //xml解析
????<c:set?var="bookName"?><x:out?select="$doc/xml-body/books/book[@id='1']"/></c:set> ? //xml 定位
????${fn:substring(bookName,"0",?fn:length(bookName)-2?)?}<br> ????????????????????????? //字符substring

???? <x:forEach var="item" select="$doc/xml-body/books/book"? >?????? //迭帶
??? ??? <x:out select="$item" /><br>
???? </x:forEach>
???
??</body>
</html>

結果得到是:?? book1_goog
??? ?? ???? book1_google
??? ??? ??? book2_baidu
??? ??? ??? book3_tiancai
/xml 路徑是

package?Servlet;

import?java.io.IOException;
import?java.io.PrintWriter;

import?javax.servlet.ServletException;
import?javax.servlet.http.HttpServlet;
import?javax.servlet.http.HttpServletRequest;
import?javax.servlet.http.HttpServletResponse;

public?class?XmlServlet?extends?HttpServlet?{
????/**
?????*?
?????*/
????private?static?final?String?CONTENT_TYPE?=?"text/html;?charset=GBK";
????public?void?init()?throws?ServletException{}
????public?void?doGet(?????HttpServletRequest?request,
????????????????????????HttpServletResponse?response?)
????????????????????????throws?ServletException,IOException{
????????PrintWriter?out?=?response.getWriter();
????????
????????response.setContentType(CONTENT_TYPE);
????????response.setCharacterEncoding("GBK");
????????
????????
????????out.print("<?xml?version='1.0'?encoding='UTF-8'?>");
????????out.print("<xml-body>");
????????????????out.print("<name>RW</name>");
????????????????out.print("<passWord>123456</passWord>");
????????????????out.print("<age>28</age>");
????????????????out.print("<books>");
????????????????????????out.print("<book?id='1'>book1_google</book>");? //jsp 定位得到的? 字符
????????????????????????out.print("<book?id='2'>book2_baidu</book>");
????????????????????????out.print("<book?id='3'>book3_tiancai</book>");
????????????????????????out.print("</books>");
????????out.print("</xml-body>");????????
????}
????public?void?doPost(?HttpServletRequest?request,
????????????????????????HttpServletResponse?response?)
????????????????????????throws?ServletException,IOException{
????????doGet(request,response);
????}
}

心得：寫EL心情就是好

posted @ 2007-08-02 10:13 G_G 閱讀(1620) | 評論 (3) | 編輯收藏

JSP 自定義標簽筆記

JSP 自定義標簽
? 1. <my:list pass="${pass}"/>pass 的建立是(1)tld文件加 <attribute>(2).java加 private String pass gget() gset()
? 2. 要有 Body .java 就繼承 BodyTagSupport 不要就? TagSupport
? 3.? doStartTag() 中輸出是? pageContext.getOut().print("hello."+this.pass);
? 4.? doAfterBody() 中輸出是 BodyContent bc = super.getBodyContent();
??? ?? ?? ?? ?? ?? ?? ?? ?? ? String bStr = bc.getString(); // body 中的 string
??? ?? ?? ?? ?? ????????????? bc.getEnclosingWriter().print(...);? // out to jsp
? 5. <my:list pass="liukaiyi">
???? ???? <c:if test="${gg==null}">?? //會先運行得到 String 再在 bc.getString()得到 String
? ??? ??? ??? XX
? ??? ??? </c:if>
???? </my:list>
? 4.? .java 中通過是 doStartTag()
??? ??? ??? ??? ??? ??? return SKIP_BODY? 跳向 doEndTag()
??? ?? ?? ?? ?? ?? ?? ? return EVAL_BODY_INCLUDE 跳過主體 doBodyContent()
??? ?? ?? ?? ?? ?? ?? ? return EVAL_BODY_BUFFERED 調用doInitBody()
? 5.? .java 中 doAfterBody()
??? ?? ?? ?? ?? ?? ?? ? return SKIP_BODY 跳出循環到 doEndTag()
??? ?? ?? ?? ?? ?? ?? ? return EVAL_BODY_AGAIN 再次 doAfterBody()
? 6.? .java 中 doEndTag()
??? ?? ?? ?? ?? ?? ?? ? retrun EVAL_PAGE 繼續剩余
??? ?? ?? ?? ?? ?? ?? ? return SKIP_PAGE 跳出

Tag 自定義標簽
? 1. <%@ taglib prefix="my" tagdir="/WEB-INF/tags" %> 倒入并在 tags 文件中建 XXX.tag
? 2. 使用 EG: <my:文件名 />
? 3. <my:MyTag items="${name}" />在文件.tag中加入 <%@ attribute name="items"%>
???????????????????????????????? 并在 body中${items}就可以使用
? 4. body加標簽同 JSP 自定義標簽 5
? 5. ? <my:MyTag items="d" >
? ??? ??? <jsp:attribute name="list">? //添加body模塊
? ??? ??? ??? ..<>..
? ??? ??? </jsp:attribute>
? ???? </my:MyTag>
??? ?? 在 .tag 中 <%@ attribute name="list" fragment="true" required="true" %> 取得
??? ?? <jsp:invoke fragment="list" /> 使用中的 String

posted @ 2007-07-30 11:52 G_G 閱讀(334) | 評論 (0) | 編輯收藏

今天被 googleMap 幽默了下 :-) 也和大家分享

我開個頭

希望大家也貢獻些 :-)

posted @ 2007-07-25 17:13 G_G 閱讀(229) | 評論 (0) | 編輯收藏

ajax 的輸入選擇（同google&讀數據庫）

摘要: 問題：用戶在 WEB 中輸入機車人員等項頁面會根據當前字符給出選擇提示解決：scriptaculous javascript工具包的 Autocompleter.Local 與圖對應代碼：Code highlighting produced by Actipro CodeHighlighter (freeware)http://www.CodeHighlighter.com/-->... 閱讀全文

posted @ 2007-07-25 17:05 G_G 閱讀(1275) | 評論 (2) | 編輯收藏

WEB xml 畫圖 (javascript包裝)用到 prototype.js wz_jsgraphics.js

問題: 畫頁面或報表的圖象問題
解決：用通過xml畫圖? 畫筆wz_jsgraphics.js?
??? ??? ??? ??? ??? ? xml數據取得 prototype.js
??? ?? ?? ?? ?? ?? ?? 畫動作 Xmlgraphics.js （自己包裝）
??? 下載：http://www.aygfsteel.com/Files/Good-Game/Mywz_jsgraphics.rar? 請放在服務器上(tomcat) 并改 ?? ??? ??? ??? ??? ??? ? testLine.html頁面上的 load( ul ) =>>? ul （ xml 的取得地方）
??????????? 請注意： IE 5 支持不好請用火狐或 IE6
圖片：

EG:
?? 這展現了畫線畫圖? 到畫字的簡單過程

簡單頁面：給出 div 的 id （位置和 xml 的出處就可以了）load() 方法

<!DOCTYPE?HTML?PUBLIC?"-//W3C//DTD?HTML?4.01//ZH-CN"?"http://www.w3.org/TR/html4/strict.dtd">
<html>
????<head>
????????<meta?http-equiv="Content-Type"?content="text/html;?charset=UTF-8"?/>
????????<script?language="JavaScript"?src='../lib/prototype/wz_jsgraphics.js'?></script>
????????<script?language="JavaScript"?src="../lib/prototype/prototype.js"></script>
????????<script?language="JavaScript"?src="../js/test.js"?></script>
????????<script?language="JavaScript"?src="../js/Xmlgraphics.js"?></script>
????????
????</head>
????
?<body?onload='load(?"http://127.0.0.1:8000/Mywz_jsgraphics/xml/graphics.xml"?)'>?????
???<div?id="myCanvas"?style="position:relative;height:250px;width:100%;">?<input?type='button'?onclick='tt()'?/>?</div>?
?</body>
</html>

<script>
????function?tt(){
????????var?uu?=?'strr'
?????????var?g2?=?getGdom(uu)?;
????????getValue(uu).clear();
??
????}
????
</script>

posted @ 2007-07-11 13:31 G_G 閱讀(3178) | 評論 (0) | 編輯收藏

WEB 圖畫 -- wz_jsgraphics 筆記

1. 開始

posted @ 2007-07-05 09:32 G_G 閱讀(504) | 評論 (0) | 編輯收藏

hibernate 包裝

07-11-9
由于我對hibernate理解的深入，在次我來終結下這篇文章的不足的地方（好多人在拍磚哈）
對復雜的邏輯這樣開和關太冒失了。
? 在普通的邏輯方法中 session都疊加的用上2次以上這就要對一級緩沖的管理。事物的使用也是一樣。

下載:?
http://www.aygfsteel.com/Files/Good-Game/hibernateUtil.rar

簡單的繼承包 :?
??????繼承 DBManage 類? 把?數據包裝類管理 (?填充 ,?set 等 ) 后就直接放到里 insert , update , delete 方法中
???????? 填充可看看這個,很有實用價值 ----> (?當 Form -> Bean? 或?Bean ->Bean ?) 例子很簡單但想法表明??
???????????????????????????????????????????????????????????????????????????
??????繼承 DBSelect 類為 select? 這只是把 Query 給出簡單用法是
??????????????????????????????????????????????????????Query?qu =???dao.getQueryBegin(? "?HQL?"?);
??????????????????????????????????????????????????????????????qu.add .....
??????????????????????????????????????????????????????List li = dao.getQuertyEnd(?qu?);
?????擴展:? Criteria? cr , SQLQuery , 等等把她包裝成各個 dao 中不是很偷懶???? : )

Eg :??? ?extendsDBBasic 類

????public?List?select(String?id,String?time){

????????List?list?=?new?ArrayList();

????????

??????? Query qu = getQueryBegin("HSQL");?? //繼承帶來的好處

????????

??????? .add..........

?????????????

?????? List list = getQuertyEnd(qu); ?? //繼承結束

????????

????????return??list;

????}

缺點: 最好不要static?在一時間點上此類不能支持多線程?
???????????????basicBegin? basicEnd ?方法 (?我找不到好的方法要的話來個連接池什么的大家討論西西吧!!

??)
?????????????? sess 為全局的 session 要是寫成?baseicBegin 返回的話感覺下面的還有很多要寫什么 close 啊...
?????????????????????sess 也是缺點的所在? 當然大家有什么想法改下或自己來個小包裝我只是?

??拋磚引玉
???

????private?Map?transmap?=?new?HashMap();

????protected?Session?basicBegin(){
????????Session?sess?=?SessionManager.currentSession();
????????try?{
????????????transmap.put(?sess,?sess.beginTransaction()?);
????????}catch(Exception?e){System.out.println(e);}
????????return?sess?;
????}
????
????protected?void?basicEnd(Session?sess){
????????try?{
????????????((Transaction)transmap.remove(sess)).commit();
????????}catch(Exception?e){System.out.println(e);}
????????finally{
????????????sess?=?null?;
????????????SessionManager.closeSession();
????????}
????}

心得: 多包裝多快樂

posted @ 2007-07-04 16:49 G_G 閱讀(1039) | 評論 (5) | 編輯收藏

僅列出標題

Skynet

Jakarta Commons BeanUtils 學習

Struts validation 小例

java Xpath 小例

EL 標簽小例

JSP 自定義標簽筆記

今天被 googleMap 幽默了下 :-) 也和大家分享

ajax 的輸入選擇（同google&讀數據庫）

WEB xml 畫圖 (javascript包裝)用到 prototype.js wz_jsgraphics.js

WEB 圖畫 -- wz_jsgraphics 筆記

hibernate 包裝

日歷

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