web.xml文件的编写
<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>
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE dwr PUBLIC "-//GetAhead Limited//DTD Direct Web Remoting 1.0//EN" "http://www.getahead.ltd.uk/dwr/dwr10.dtd">
<dwr>
<allow>
<create creator="new" javascript="Demo">
<param name="class" value="com.Demo"/>
</create>
</allow>
</dwr>
java类文件
package com;
public class Demo {
public String sayHello(String name) {
return "Hello," + name;
}
}
html文件demo.xtml
<title>Text Demo</title> <script src='dwr/interface/Demo.js'></script> <!--此处的Demo.js是dwr.xml中create标签的javascript的值--> <script src='dwr/engine.js'></script> <script type='text/javascript' src='dwr/util.js'></script> <script> var allname; function update() { var name = dwr.util.getValue("demoName"); <!--在这里直接类名.方法就可以调用java方法了--> Demo.sayHello(name,function(data){ dwr.util.setValue("demoReply",data); allname=data; }); alert(allname); } </script> </head> <body> <p> Name: <input type="text" id="demoName"/> <input value="Send" type="button" onclick="update()"/> <br/> Reply: <span id="demoReply"></span> </p> </body> </html>
还要导入Dwr所需的jar文件，可以从dwr的官网下载
