flex httpService用法

传递请求到Java后台自己总结出了三种方式,
第一种：
通过httpService向java的servlet发送请求，然后返回一个结果：
第一步新一个httpService.mxml文件:
<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
<mx:Button x="277" y="162" label="点击" width="194" height="73" id="myButton" click="myFunction()"/>

<mx:HTTPService
   id="myHttpService"
   result="myResult(event)"
   fault="myFault(event)"
   method="POST"
   url="http://127.0.0.1:8080/httpService01/httpservcie.do">
  <mx:request xmlns="">
   <userName>何正元</userName>
   <userPwd>123</userPwd>
  </mx:request>
</mx:HTTPService>

<mx:Script>
  <![CDATA[
   import mx.rpc.events.FaultEvent;
   import mx.controls.Alert;
   import mx.rpc.events.ResultEvent;
   private function myFunction():void{
    myHttpService.send();
   }
   private function myResult(event:ResultEvent){
    var msg = event.result.toString();
    Alert.show(msg);
   }
   private function myFault(event:FaultEvent){
    var msg = event.fault.toString();
    Alert.show("错误:"+msg);
   }
  ]]>
</mx:Script>
</mx:Application>
第二步，写一个servlet:
package com.lovo;

import java.io.IOException;
import java.io.PrintWriter;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class HttpService extends HttpServlet {


public void doGet(HttpServletRequest request, HttpServletResponse response)
   throws ServletException, IOException {


  this.doPost(request, response);
}

public void doPost(HttpServletRequest request, HttpServletResponse response)
   throws ServletException, IOException {

  request.setCharacterEncoding("UTF-8");
  response.setContentType("text/html;charset=utf-8;");
  PrintWriter out = response.getWriter();

  String userName = request.getParameter("userName");
 
  String userPwd = request.getParameter("userPwd");
  out.print("你输入的姓名为："+userName+ "密码为:"+userPwd);
 
}

}
对于httpServlet就介绍完成了。上面代码是通过测试的。