dwr 实现步骤
第一步：导dwr.jar,commons-logging-1.0.4.jar,
commons-logging-adapters-1.1.jar,
commons-logging-api-1.1.jar
第二步：写web.xml文件
<?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">
<servlet>
<display-name>DWR Servlet</display-name>
<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>
</web-app>
第三步：写dwr.xml文件
<?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>
<create creator="new" javascript="Demo">
<param name="class" value="com.Demo"/>
</create>
</allow>
</dwr>
第四步：写Demo.java类
package com;
public final class Demo
{
public String hello(String name)
{
if(name.equals("tangleboy")){
return name + "你的dwr程序成功运行!";
}else{
return "输入信息错误！";
}
}
}
第五步：写index.jsp页面
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<script type='text/javascript' src='dwr/interface/Demo.js'></script>
<script type='text/javascript' src='dwr/engine.js'></script>
<script type='text/javascript' src='dwr/util.js'></script>
<script type='text/javascript' src='hello.js'></script>
<script type="text/javascript">
function hello() {
var name = dwr.util.getValue("name");
Demo.hello(name, a);
}
function a(data) {
dwr.util.setValue("result", data);
}
</script>
</head>
<body>
<input type="text" name="name" value="tangleboy!">
<input type="button" value="button" onclick="hello();">
<span id="result" ></span>
</body>
</html>
commons-logging-adapters-1.1.jar,
commons-logging-api-1.1.jar
第二步：写web.xml文件
<?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">
<servlet>
<display-name>DWR Servlet</display-name>
<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>
</web-app>
第三步：写dwr.xml文件
<?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>
<create creator="new" javascript="Demo">
<param name="class" value="com.Demo"/>
</create>
</allow>
</dwr>
第四步：写Demo.java类
package com;
public final class Demo
{
public String hello(String name)
{
if(name.equals("tangleboy")){
return name + "你的dwr程序成功运行!";
}else{
return "输入信息错误！";
}
}
}
第五步：写index.jsp页面
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<script type='text/javascript' src='dwr/interface/Demo.js'></script>
<script type='text/javascript' src='dwr/engine.js'></script>
<script type='text/javascript' src='dwr/util.js'></script>
<script type='text/javascript' src='hello.js'></script>
<script type="text/javascript">
function hello() {
var name = dwr.util.getValue("name");
Demo.hello(name, a);
}
function a(data) {
dwr.util.setValue("result", data);
}
</script>
</head>
<body>
<input type="text" name="name" value="tangleboy!">
<input type="button" value="button" onclick="hello();">
<span id="result" ></span>
</body>
</html>