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extremecomponents 初使用

Posted on 2007-04-24 15:51 G_G 閱讀(1045) 評論(0) 編輯收藏所屬分類: Reportform 、JspTag

<? xml?version="1.0"?encoding="UTF-8" ?>

<! DOCTYPE?web-app?PUBLIC?"-//Sun?Microsystems,?Inc.//DTD?Web?Application?2.3//EN"?"http://java.sun.com/dtd/web-app_2_3.dtd" >

< web-app >

???? < taglib >

???????? < taglib-uri > http://www.extremecomponents.org </ taglib-uri >

???????? < taglib-location > /WEB-INF/extremecomponents.tld </ taglib-location >

???? </ taglib >

????

</ web-app >

<% @?taglib?prefix = " ec " ?uri = " /WEB-INF/extremecomponents.tld " ? %>

<% @?taglib?prefix = " c " ?uri = " /WEB-INF/c.tld " ? %>

<% @?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" >

????

???????? < link? rel ="stylesheet" ?type ="text/css" ?href ="<c:url?value=" /extremecomponents.css" /> ">

????

?? </ head >

?? < body >

???????????? <%

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

???????????????? for ?( int ?i? = ? 1 ;?i? <= ? 10 ;?i ++ )

????????????????{

????????????????????Map?goods? = ? new ?java.util.HashMap();

????????????????????goods.put( " code " ,? " A00 " + i);

????????????????????goods.put( " name " ,? " 面包 " + i);

????????????????????goods.put( " status " ,? " A:valid " );

????????????????????goods.put( " born " ,? new ? Date ());

????????????????????goodss.add(goods);

????????????????}

????????????????request.setAttribute( " goodss " ,?goodss);

???????????? %>

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

???????????? < ec:table??

???????????? action ="${pageContext.request.contextPath}/test.jsp"

????????????items ="goodss"

????????????cellpadding ="1"

????????????title ="my?bread" >

???????????? < ec:row ></ ec:row >

???????????????? < ec:column? property ="code" />

???????????????? < ec:column? property ="name" />

???????????????? < ec:column? property ="status" />

???????????????? < ec:column? property ="born" ?cell ="date" ?format ="yyyy-MM-dd" />

???????????? </ ec:table >

?? </ body >

</ html >

{轉}

在eXtremeComponents組件里實現列的動態顯示

關鍵字: ? java,eXtremeComponents????

在我開發的一個通用查詢項目中想把查詢結果集的顯示部分采用eXtremeComponents組件來處理，但是碰到個問題，就是組件預先并不知道查詢結果的列名，也就是必須解決Column列的動態顯示問題。

有一種方法就是通過在jsp頁面里羅列一下，但是總感覺不舒服，查文檔發現eXtremeComponents有一接口AutoGenerateColumns可實現此功能，以下為具體實現步驟：

一、在應用的servlet（或struts action等）里（如sqlAction.do）實現根據SQL語句的運行結果獲取字段名稱列表（fieldnames）和查詢結果集（results）并將其放入httpRequest的屬性中

代碼

List?fieldnames?=?實現[獲取字段名稱列表]方法;??
List?results?=?實現[獲取查詢結果集]方法;??
httpRequest.setAttribute("fieldnames",?fieldnames);??
httpRequest.setAttribute("results",?results);??

results將作為eXtremeTable組件中屬性items的值，fieldnames將用來迭代構造Column對象

二、編寫類AutoGenerateColumnsImpl實現org.extremecomponents.table.core.AutoGenerateColumns接口

代碼

package?org.boogie.sql.common.ec;??
??
import?java.util.Iterator;??
import?java.util.List;??
??
import?org.extremecomponents.table.bean.Column;??
import?org.extremecomponents.table.core.AutoGenerateColumns;??
import?org.extremecomponents.table.core.TableModel;??
??
public?class?AutoGenerateColumnsImpl?implements?AutoGenerateColumns?{??
??
????public?void?addColumns(TableModel?model)?{??
????????List?fieldnames?=?(List)?model.getContext().getRequestAttribute(??
????????????????"fieldnames");??
????????Iterator?iterator?=?fieldnames.iterator();??
????????while?(iterator.hasNext())?{??
????????????String?fieldname?=?(String)?iterator.next();??
????????????Column?column?=?model.getColumnInstance();??
????????????column.setProperty(fieldname);??
????????????//?column.setCell((String)?columnToAdd.get(CELL));??
????????????model.getColumnHandler().addAutoGenerateColumn(column);??
????????}??
????}??
}??

AutoGenerateColumns接口只有一個方法addColumns供實現，在此方法中通過傳入的TableModel型參數 model可從其Context中獲取到httpRequest中的fieldnames屬性值，然后根據fieldnames列表迭代構造對應 Column后添加到model中

三、在顯示頁文件的eXtremeTable中，配置TableTag的屬性items值為results，配置ColumnTag的屬性autoGenerateColumns值為類AutoGenerateColumnsImpl的全路徑

代碼

<ec:table???
????????items="results"??
????????var="result"??
????????action="${pageContext.request.contextPath}/sqlAction.do"??
????????imagePath="${pageContext.request.contextPath}/images/table/*.gif"??
????????title="查詢結果"??
????????width="100%"??
????????rowsDisplayed="5"??
????????>??
??<ec:parameter?name="method"?value="ec"/>??
??<ec:row>??
????<ec:columns?autoGenerateColumns="org.boogie.sql.common.ec.AutoGenerateColumnsImpl"/>??
??</ec:row>??
</ec:table>

小結******************************************************************************

<%@?page?language="java"?pageEncoding="UTF-8"%>

<%@?taglib?uri="http://jakarta.apache.org/struts/tags-bean"?prefix="bean"%>?

<%@?taglib?uri="http://jakarta.apache.org/struts/tags-html"?prefix="html"%>

<%@?taglib?uri="http://jakarta.apache.org/struts/tags-logic"?prefix="logic"%>

<%@?taglib?uri="http://www.extremecomponents.org"?prefix="ec"?%>?

<%@?taglib?uri="http://struts.apache.org/tags-tiles"?prefix="tiles"?%>

<%@?taglib?uri="http://www.jjm.cn/tags-security"?prefix="jjmtag"%>

<html>?

????<head>

????????<LINK?href="<%=request.getContextPath()%>/css/extremetable.css"?rel="stylesheet"?type="text/css">

????????<script?language="JavaScript"?src="<%=request.getContextPath()%>/res_others/calendar/calendar.js?">?</script>???? //時間的 js 插件

????????<LINK?rel="StyleSheet"?type="text/css"?href="<%=request.getContextPath()%>/css/jjmStyle.css">??????

????</head>

????<body>

????

????<TABLE?border="1"?class="borderLessTable"?width=100%>

????????<html:form?action="/tAT.do">

????????????????<TR>

????????????????????<TD?class="tdQueryCaption13">

????????????????????????<CENTER>?時間范圍:</CENTER>

????????????????????</TD>

????????????????????<TD?class="tdQueryCaption13">

????????????????????<CENTER>

????????????????????????<html:text?property="time"?size="8"?readonly="true"/>?????????????????????//作為時間的 javascript 插件

????????????????????????????<img?alt="彈出日歷下拉菜單"?height="16"?width="16"?align="middle"?

????????????????????????????????????src="<%=request.getContextPath()%>/res_others/calendar/img/cal.gif"?

????????????????????????????????????style="cursor:hand;"?

????????????????????????????????????onclick="fPopUpCalendarDlg(time);return?false"/>

????????????????????</CENTER>????????????????????????????

????????????????????</TD>

????????????????????<tD>

????????????????????????<CENTER><html:image?src="/rlzy/images/edit/chaxun.gif"></html:image></CENTER>

????????????????????</tD>

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

????????????</html:form>

????</TABLE>

????

</CENTER>

????

????????<ec:table??

????????????????items?="list"

????????????????imagePath="${pageContext.request.contextPath}/images/ectable/*.gif"

????????????????cellpadding?="1">

?????????????<ec:row></ec:row>

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

????????????????<ec:column???property?="入段&調離"?/>

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

????????????????<ec:column??cell="com.jjm.extremesite.cell.CorpNameCell"?property="段號"/>???//?? (1)?? 標簽的重寫

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

????????????????<ec:column??cell="com.jjm.extremesite.cell.CorpNameCell"?property="車間"?/>

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

????????????????<ec:column??property="姓名"?/>

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

?????????????????<ec:column???property="入段時間"?cell="date"?format="yyyy-MM-dd"??/>???//時間的表示 cell="date"?format="yyyy-MM-dd"??

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

????????????????<ec:column???property="調離時間"?cell="date"?format="yyyy-MM-dd"/>

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

?????????????</ec:table?>

????</body>

</html>

package?com.jjm.extremesite.cell;

import?org.extremecomponents.table.bean.Column;

import?org.extremecomponents.table.cell.AbstractCell;

import?org.extremecomponents.table.core.TableModel;

import?com.jjm.bj.dao.CorpBean;

import?com.jjm.bj.dao.CorpDao;

public?class?CorpNameCell?extends?AbstractCell?{

????public?void?destroy()?{

????}

????/**

?????*?@param?args

?????*/

????public?static?void?main(String[]?args)?{

????}

????

????private?String?getCorpName(String?id){

????????if?(id!=null?&&?id.length()>0){

????????????CorpBean?obj?=null;

????????????obj=CorpDao.findByID(id);

????????????if?(obj!=null){

????????????????return?obj.getCorpName();

????????????}????????????

????????}????

????????return?"";

????}

????protected?String?getCellValue(TableModel?tableModel,?Column?column)?{

????????CorpNameCell?corpName=new?CorpNameCell();

????????return?corpName.getCorpName(column.getValueAsString());

????}

}

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