web.xml文件的配置信息
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5"
xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee
http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<display-name> ajaxDWR</display-name>
<servlet>
<servlet-name>dwr-invoker</servlet-name>
<servlet-class>uk.ltd.getahead.dwr.DWRServlet</servlet-class>
<init-param>
<description>
</description>
<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>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
dwr文件的配置信息
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE dwr PUBLIC "-//GetAhead Limited//DTD Direct Web Remoting 3.0//EN" "http://getahead.org/dwr//dwr30.dtd">
<dwr>
<allow>
<create creator="new" javascript="Hello">
<param name="class" value="extdwr.Hello" />
</create>
</allow>
</dwr>
helloword的Java文件
package extdwr;
public class Hello {
public String hello(String name) {
return "哈囉！" + name + "！您的第一個DWR！";
}
}
dwrhello的jsp文件
<%@ page language="java" import="java.util.*" pageEncoding="GBK"%>
<%
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>
<meta http-equiv="Content-Type" content="text/html; charset=BIG5">
<title>第一個DWR程式</title>
<script type='text/javascript' src='dwr/interface/Hello.js'></script>
<script type='text/javascript' src='dwr/engine.js'></script>
<script type='text/javascript' src='dwr/util.js'></script>
<script type="text/javascript">
function hello() {
var user = $('user').value;
Hello.hello(user, callback);
}
function callback(msg) {
document.getElementById("result").innerHTML = msg;
}
</script>
</head>
<body>
<input id="user" type="text" />
<input type='button' value='哈囉' onclick='hello();' />
<div id="result"></div>
</body>
</html>