HelloWorld with DWR

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1.引入包 dwr.jar

2.web.xml中加入如下代码

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

3.HelloWorld.java

package org.gy.dwrdemo;public class HelloWorld {public String sayHello(String name){return "Welcome " + name + " !!!";}}

4.WEB-INF/dwr.xml

<!DOCTYPE dwr PUBLIC "-//GetAhead Limited//DTD Direct Web Remoting 2.0//EN" "http://getahead.org/dwr/dwr20.dtd"> <dwr> <allow>  <create creator="new" javascript="HelloWorld"> <param name="class" value="org.gy.dwrdemo.HelloWorld"/> <include method="sayHello"/> </create> </allow> </dwr>

5.hello.jsp

<%@ page language="java" pageEncoding="UTF-8"%><!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"><html> <head> <title>My JSP 'hello.jsp' starting page</title><mce:script type='text/javascript' src="/MyDwrDemo/dwr/interface/HelloWorld.js" mce_src="MyDwrDemo/dwr/interface/HelloWorld.js"></mce:script> <mce:script type='text/javascript' src="/MyDwrDemo/dwr/engine.js" mce_src="MyDwrDemo/dwr/engine.js"></mce:script> <mce:script type='text/javascript' src="/MyDwrDemo/dwr/util.js" mce_src="MyDwrDemo/dwr/util.js"></mce:script><mce:script type="text/javascript"></mce:script> </head> <body> <input type="text" id="name" /> <input type="button" value="Click" onclick="hello()" /> </body></html>

完成