Dwr简单使用

一 Dwr下载地址:http://directwebremoting.org/dwr/downloads/index.html
二 Dwr使用
   web.xml配置

<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>  
</servlet>  
  
<servlet-mapping>  
  <servlet-name>dwr-invoker</servlet-name>  
  <url-pattern>/dwr/*</url-pattern>  
</servlet-mapping>  

  dwr.xml的声明

<?xml version="1.0" encoding="UTF-8"?>  
<!DOCTYPE dwr PUBLIC "-//GetAhead Limited//DTD Direct Web Remoting 2.0//EN" "http://getahead.org/dwr/dwr20.dtd">  
<dwr>  
  <allow>  
    <!-- 一个实例对应一个create节点 -->  
    <create creator="new" javascript="Ming">  
      <param name="class" value="com.ming.dwr.DwrTest"/>  
    </create>  
  </allow>  
</dwr>  
   

  java代码

  package com.ming.dwr;  
/** 
 * dwr使用测试 
 * @author Admin 
 * 
 */  
public class DwrTest {  
  
    public String hello(String str){  
        return "Hello!";  
    }  
  
}  

  jsp页面的引用

<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/Ming.js"></script>  
javascript的调用
   DWREngine.setAsync(false);//设置dwr为同步执行
   Ming.hello("hello", function(data){
     var hello = data;		
   });
   DWREngine.setAsync(true);