Applet学习教程（一）：applet+dwr 实现

后台代码

import java.applet.Applet;
import java.util.HashMap;
import java.util.Map;


import netscape.javascript.JSObject;


public class OrderRemindApplet extends Applet     {
    
    private static final long serialVersionUID = 1L;
    public static final int PORT = 12333; 
     JSObject win;
     JSObject doc;
     String[] args = new String[10];
     Thread timer;
     String salesGroupCode="";//
     boolean flag=false;
     
 
    @Override
    public void init() {
        System.out.println("init;;;");
      try {
          this.win = JSObject.getWindow(this);
          this.doc = ((JSObject)this.win.getMember("document"));
          salesGroupCode = getParameter("salesGroupCode"); 
        } catch (Exception e) {
            System.out.print(e.getMessage());
        } 
    }
    public String getOrderCounts(String salesgcodePar){
        System.out.println("getOrderCounts;;;");
        Map<String, Object> mapPara = new HashMap<String, Object>();
        mapPara.put("salesgcode", salesgcodePar);
        String result= "商号"+salesgcodePar+",N个订单，超过30分钟未处理，请去服务监控页面处理";
        return result;
    }
 
    @Override
     public void destroy() {
        System.out.println("destroy;;;");
      }
    
    @Override
    public void start(){
        System.out.println("start;;;");
    }

 
}

前台代码

<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
    <title>Insert title here</title>
      <script type='text/javascript' src='dwr/interface/OrderRemindApplet.js'></script>
       <script type='text/javascript' src='dwr/engine.js'></script>
       <script type='text/javascript' src='dwr/util.js'></script>
<script>
//这个方法用来启动该页面的ReverseAjax功能
dwr.engine.setActiveReverseAjax( true);
var salesGroupCode="641";
function startRe(){
    OrderRemindApplet.getOrderCounts(salesGroupCode,callBackFun);
    setTimeout(startRe,20*1000);
}
function callBackFun(result){
     alert(result);
}
</script>
</head>
<body onload="startRe();" >
<applet name="OrderRemindApplet" code="OrderRemindApplet"  width="100" height="200" codebase="."  code="OrderRemindApplet.class" >
    <param name=salesGroupCode value="641">  
</applet>
</body>
</html>

dwr2.0 配置

<?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="OrderRemindApplet" scope="session">
      <param name="class" value="OrderRemindApplet"/>
    </create>
  </allow>
 

</dwr>

jar 文件

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原文地址：https://www.cnblogs.com/xiaohuizhenyoucai/p/10729185.html