一个关于DWR的例子
自己做的一个关于DWR的例子。
index.jsp
-------------------------------------------
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
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>
<base href="<%=basePath%>">
<title>DWR DEMO</title>
<meta http-equiv="pragma" content="no-cache">
<meta http-equiv="cache-control" content="no-cache">
<meta http-equiv="expires" content="0">
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
<meta http-equiv="description" content="This is my page">
<!--
<link rel="stylesheet" type="text/css" href="styles.css">
-->
</head>
<script type='text/javascript' src='/DWRDemo/dwr/interface/DWRExample.js'></script>
<script type='text/javascript' src='/DWRDemo/dwr/engine.js'></script>
<script type='text/javascript' src='/DWRDemo/dwr/util.js'></script>
<script type="text/javascript">
function show()
{
//display list data
DWRExample.getList(call);
}
function call(data)
{
if(data)
{
var content="name age<br/>";
for(var i=0;i<data.length;i++)
{
//alert(data[i].name);
content+=(data[i].name+" "+data[i].age+"<br/>")
}
DWRUtil.setValue("DemoDiv",content);
}
}
function validateForm()
{
//validate user name
//var name=document.getElementById("name");
var name=DWRUtil.getValue("name");
if(name==null || name=="")
{
alert("name is null!");
}else
{
DWRExample.checkUser(name,callBack);
}
}
function callBack(data)
{
if(data)
{
//alert("name is right!");
//name=='xy' return to current page
window.location.href="/DWRDemo/";
}else
{
alert("name is not exist!");
}
}
</script>
<body>
This is my DWR DEOM page. <hr>
<input id="name" name="name" value=""/>
<input type="button" onclick="show();" value=" ok "/>
<br>
<div id="DemoDiv">demo</div>
</body>
</html>
***************************************
dwr.xml
-------------------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<dwr>
<!-- AJAX技术具体实现 -->
<allow>
<!-- convert将bean的集合变成javascript中的对象数组-->
<convert converter="bean" match="com.DemoBean"></convert>
<!-- 业务处理类 -->
<create creator="new" javascript="DWRExample" class="com.DWRExample" scope="session">
<include method="getList"/>
<include method="checkUser"/>
</create>
</allow>
</dwr>
********************************
web.xml
----------------------------------------
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.4"
xmlns="http://java.sun.com/xml/ns/j2ee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">
<!-- DWR2.0 -->
<servlet>
<servlet-name>dwrInvoker</servlet-name>
<servlet-class>org.directwebremoting.servlet.DwrServlet</servlet-class>
<init-param>
<param-name>debug</param-name>
<param-value>true</param-value>
</init-param>
<init-param>
<param-name>classes</param-name>
<param-value>java.lang.Object</param-value>
</init-param>
<load-on-startup>10</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>dwrInvoker</servlet-name>
<url-pattern>/dwr/*</url-pattern>
</servlet-mapping>
</web-app>
***************************************]
DWRExample .java
-------------------------------------------------
package com;
import java.io.Serializable;
import java.util.ArrayList;
import java.util.List;
public class DWRExample implements Serializable {
public List getList()
{
List list=new ArrayList();
DemoBean db=null;
for(int i=0;i<5;i++)
{
db=new DemoBean();
db.setAge(22+i);
db.setName("ddh"+i);
list.add(db);
}
return list;
}
public boolean checkUser(String name)
{
if("xy".equals(name))
{
return true;
}else
{
return false;
}
}
}
***********************************
DemoBean .java
---------------------------------------------
package com;
import java.io.Serializable;
public class DemoBean implements Serializable {
private String name;
private int age;
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
以上例子仅供参考，谢谢