dwr初步

来源：互联网发布：变号软件编辑：程序博客网时间：2024/05/16 06:00

本人对于dwr框架原理还不了解，依葫芦画瓢的使用方法如下：
1、导入jar包dwr.jar
2、新建返回data对象的servlet类

package com.yourcompany.portal;import java.util.ArrayList;import java.util.List;public class DwrManager{ public List<TagSmsOMCTraceNotify> getData() { TrackServiceImpl track = new TrackServiceImpl(); List results = track.query(null, null).getResultList(); List<TagSmsOMCTraceNotify> list = new ArrayList<TagSmsOMCTraceNotify>(); for (int i = 0; i < results.size(); i++) { list.add((TagSmsOMCTraceNotify)results.get(i)); } return list; }}

3、添加dwr.xml配置文件，路径与web.xml相同

<?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 javascript="DwrManager" creator="spring"><param name="beanName" value="DwrManager"></param></create><convert converter="bean"match="com.yourcompany.portal.TagSmsOMCTraceNotify" /><convert converter="bean"match="com.yourcompany.message.Message" /><convert converter="bean"match="com.yourcompany.message.MessageHeader" /></allow></dwr>

4、配置web.xml
添加配置项：

<servlet><servlet-name>dwr-invoker</servlet-name><servlet-class>uk.ltd.getahead.dwr.DWRServlet</servlet-class><init-param><param-name>debug</param-name><param-value>true</param-value></init-param><load-on-startup>0</load-on-startup></servlet><servlet-mapping><servlet-name>dwr-invoker</servlet-name><url-pattern>/dwr/*</url-pattern></servlet-mapping>

5、spring 配置文件applicationContext.xml注入bean

6、页面引入js、添加js函数

<mce:script type='text/javascript' src="/dwr/interface/DwrManager.js" mce_src="dwr/interface/DwrManager.js"></mce:script><mce:script type='text/javascript' src="/dwr/engine.js" mce_src="dwr/engine.js"></mce:script><mce:script type="text/javascript"></mce:script>