flex httpService用法

最新推荐文章于 2021-02-20 15:04:59 发布

原创最新推荐文章于 2021-02-20 15:04:59 发布 · 140 阅读

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#Flex #Servlet #Java #XML #HTML

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本文详细介绍了如何通过MXML文件和Java Servlet实现HTTP请求的发送与接收过程，包括请求参数设置、响应结果解析及错误处理，提供了一个完整的实例。

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。