一个简单的dwr小程序

最新推荐文章于 2025-02-20 22:43:12 发布

yuqiangyuqiang

最新推荐文章于 2025-02-20 22:43:12 发布

阅读量542

点赞数

CC 4.0 BY-SA版权

文章标签： dwr stylesheet callback path encoding string

本文链接：https://blog.youkuaiyun.com/yuqiangyuqiang/article/details/1871599

1. web.xml和dwr.xml

<?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="Hello">
   <param name="class" value="com.yuqiang.Hello" />
  </create>
</allow>
</dwr>

<?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">
<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>
</web-app>

2.Hello.java

package com.yuqiang;

public class Hello {
   public String hello(String name){
    return "您好!"+name+",开始你的DWR学习啦!";
   }
}

3.hello.js

function hello() {
var user = $("usertext").value;
Hello.hello(user, callback);
}
function callback(msg) {
DWRUtil.setValue("result", msg);
}

4.index.html

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
  <title>index.html</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>(这个是其中的配置文件)
  <script type='text/javascript' src='js/hello.js'></script>（引用写的js文件以及它的相对路径）
<meta http-equiv="keywords" content="keyword1,keyword2,keyword3">
  <meta http-equiv="description" content="this is my page">
  <meta http-equiv="content-type" content="text/html; charset=UTF-8">

</head>

其实这个文件和jsp一起运用的比较的多，所以配置文件下的相对路径最好前面加上如下的语句就可以的啊

<%
String path = request.getContextPath();
%>