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>
添加dwr.xml文件
<?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>
<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");
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>
