dwr下柆框与列表框联动的实现

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J2EE框架

DWR Struts Web Bean XML

首先配置好dwr框架所需的文件。
dwr的配置过程：
在/WEB-INF/lib中加入dwr.jar文件
在web.xml中加载dwr对应的servlet

<servlet>
		<servlet-name>dwr</servlet-name>
			<servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
			<init-param>
				<param-name>debug</param-name>
				<param-value>true</param-value>
			</init-param>
		</servlet>
		<servlet-mapping>
			<servlet-name>dwr</servlet-name>
			<url-pattern>/dwr/*</url-pattern>
		</servlet-mapping>

在/WEB-INF/中加入dwr.xml文件

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE dwr PUBLIC "-//GetAhead Limited//DTD Direct Web Remoting 1.0//EN" "http://www.getahead.ltd.uk/dwr/dwr10.dtd">
<dwr>
<allow>
<create creator="spring" javascript="bmgl">
	<param name="beanName" value="BmglService"/>
	<include method="checkBmId" />
</create>
	
<create creator="spring" javascript="JcyqlbService" >
<param name="beanName" value="JcyqlbService"/>
<include method="findJcyqlb" />
</create>
<create creator="spring" javascript="reportManageService" >
<param name="beanName" value="reportManageService"/>
<include method="isHaveBackReport" />
</create>
<create creator="spring" javascript="YwslService" >
<param name="beanName" value="YwslService"/>
<include method="getBmList" />
<include method="getDeviceList" />
<include method="findDeviceBySydw" />
<include method="findGcjyDeviceBySydw" />
<include method="getDeviceCheckState" />
<include method="validateSbJynr" />
<include method="getSbYxzt" />
<include method="findBargainByEmployId" />
<include method="findBargainUrl" />
<include method="getCooperateCorporation" />
<include method="findAllGgSbjcByGzdid" />
<include method="findAllGgSbjcByTzsbbhs" />
<include method="findAllHtByid" />
	
</create>
	
<create creator="spring" javascript="GjxwhService" >
<param name="beanName" value="GjxwhService"/>
<include method="findRy" />
<include method="getAllYqList" />
</create>

<create creator="spring" javascript="xtSbzlService" >
<param name="beanName" value="xtSbzlService"/>
<include method="findSbzlList" />
<include method="findJyxzList" />
<include method="findJynrList" />
<include method="findGcjyJynrList" />
<include method="findSbpzList" />
<include method="findStaySbpzList" />
</create>
	
<convert converter="bean" match="com.syscanhc.tjy.data.bo.GgGjx">
 <param name="include" value="id, gjxmc" />
</convert>	
	
<convert converter="bean" match="com.syscanhc.tjy.data.bo.TbmBmk">
 <param name="include" value="dm,sm" />
</convert>
<create javascript="QueryManagerDAO" creator="new">
	<param name="class" value="com.syscanhc.tjy.data.dao.impl.QueryManagerDAO"></param>
</create>
<convert match="map" converter="java.util.Map"></convert>
</allow>
</dwr>

在jsp加入如下内容

<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean"%>
<%@ taglib uri="/WEB-INF/struts-html.tld" prefix="html"%>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic"%>

<%@ page contentType="text/html; charset=GBK"%>
<html>
<head>
<link href="css/style.css" rel="stylesheet" type="text/css">
<script language="JavaScript" src="js/system.js"></script>
<script type="text/javascript" src='dwr/engine.js'></script>
<script type="text/javascript" src='dwr/util.js'></script>
<script type="text/javascript" src="dwr/interface/QueryManagerDAO.js"></script>
<script language="javascript" type="text/javascript">
    function show(items)
    {
       DWRUtil.removeAllOptions('startSelects');
    
      DWRUtil.addOptions('startSelects',["====待选择查询字段===="]);
      DWRUtil.addOptions('startSelects',items);
    }
   
    function getItems()
    {
        QueryManagerDAO.getTableColumn($('tableName').value,show);   
    }
</script>
<title>动态查询主页面</title>

</head>
<body >
<table border="0" cellspacing="0" cellpadding="0" width="50%" id="table1">

	<html:form action="/query_Gzd?method=setOptions" method="post">
	<tr><td>
<html:select property="tableName" styleClass="inputtext" onchange="getItems();">
<html:options collection="tableItems" labelProperty="key" property="value"/>
</html:select></td></tr>
		<tr>
			<td>
			<table width="100%" border="0" cellspacing="0" class="DefaultTable">		
				<tr class="sysdisplay">
					<td align="right"> </td>					
					<td>
					<html:select property="startSelects" styleClass="inputtext"  
						size="10" multiple="true">
						<html:option value="">====待选择查询字段====</html:option>
						<html:options collection="gzdItems" labelProperty="value"  property="key"/>
						</html:select></td>
					<td align="center"><input type="button" value="添加>>"
						class="btn2" onClick="addItem()">
					<p>
					<p><input type="button" value="<<移除" class="btn2"
						onClick="deleteItem()">
					</td>
					<td><html:select property="endSelects" style="weight:80px"
						styleClass="inputtext" size="10" multiple="true">
						<html:option value="">====已选择查询字段====</html:option>
						
					</html:select></td>
				</tr>

				<tr class="sysdisplay">
					<td colspan="4" align="center"><input type="button"
						value="确 定" class="btn2" onclick="submitOptions();">    <input
						type="button" name="Submit32" onClick="window.close();"
						class="btn2" value="关 闭"></td>
				</tr>
			</table>
			</td>
		</tr>
	</html:form>
</table>
<script  language="javascript">
<!--
	function submitOptions()
	{
	 var result="";
	  var selto = document.getElementById("endSelects");
	for(var i=selto.options.length-1;i>=1;i--)
	{
		result=result+selto.options[i].text+",";
	}
	if(result.length>0){
		result = result.substr(0,result.length-1);
	}
	  gzdSearchForm.resultList.value=result;
	  var ss= window.confirm("是否保存查询条件？");
	  if(ss) {
	  var searchName=window.showModalDialog("saveTempl.html",window,"dialogHeight:100px,center:yes,resizable:no,status:no");
	  gzdSearchForm.action=gzdSearchForm.action+"&searchName="+searchName;
	  }
	  gzdSearchForm.submit();
	}

	function addItem()
	{
	    var selfrom=document.getElementById("startSelects");
	    var selto=document.getElementById("endSelects");
	
	    for(var i=selfrom.options.length-1;i>=1;i--)
	    {
	      if(selfrom.options[i].selected)
	      {
	      	 var index = selto.length;
	          selto.options[index]=new Option(selfrom.options[i].text,selfrom.options[i].value);
	          selfrom.remove(i);
	      }
	    }
	}
	
	function deleteItem()
	{
	    var selto=document.getElementById("startSelects");
	    var selfrom=document.getElementById("endSelects");
	
	    for(var i=selfrom.options.length-1;i>=1;i--)
	    {
	        if(selfrom.options[i].selected)
	        {
	            selto.options[selto.length]=new Option(selfrom[i].text,selfrom[i].value);
				selfrom.remove(i);
	        }
	    }
	}
			
//-->
</script>
</body>
</html>

〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉〉
有几点要注意：
dwr.xml是声明的类名要与页面中声明的类名一致，如
<script type="text/javascript" src="dwr/interface/QueryManagerDAO.js"></script>
与dwr.xml中
<create javascript="QueryManagerDAO" creator="new">
<param name="class" value="com.syscanhc.tjy.data.dao.impl.QueryManagerDAO"></param>
</create>
另外，QueryManagerDAO.getTableColumn()方法中如用到javaBean或者其它对象要在<convert</convert>中声明。如：
<convert match="map" converter="java.util.Map"></convert>
注意

DWRUtil.removeAllOptions('startSelects');
DWRUtil.addOptions('startSelects',["====待选择查询字段===="]);
DWRUtil.addOptions('startSelects',items);

的用法
items的类型为java.util.Map
["====待选择查询字段===="]为Array
DWRUtil.addOptions('startSelects',items,true)表示将显示的key与value互换显示
show为一回调函数，返回的结果在function show(items){}的items中

DWR中文文档v0.9.rar (1.1 MB)
描述: DWR中文文档
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DWR整理(转) | dwr使用笔记（转）

2007-10-09 18:24
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