Flex通过HTTPService与servlet通信

flex代码：

 

<?xml version="1.0" encoding="utf-8"?><s:Application xmlns:fx="http://ns.adobe.com/mxml/2009" xmlns:s="library://ns.adobe.com/flex/spark" xmlns:mx="library://ns.adobe.com/flex/halo" minWidth="1024" minHeight="768"><fx:Script><!--[CDATA[import mx.controls.*;import mx.rpc.events.ResultEvent;import mx.rpc.http.mxml.HTTPService;protected function button1_clickHandler(event:MouseEvent):void{var addNew:HTTPService = new HTTPService();addNew.resultFormat = "text" ;addNew.method = "POST";addNew.url = "http://localhost:8084/Flex_web/flex";addNew.addEventListener(ResultEvent.RESULT,result_Handler);var param:Object = new Object();param.user = user.text;param.pwd = pwd.text;addNew.send(param);}public function result_Handler(event:ResultEvent):void{var mes:String = event.message.body.toString();Alert.show("成功！" + mes,"信息"); }]]--></fx:Script><fx:Declarations><!-- Place non-visual elements (e.g., services, value objects) here --></fx:Declarations><s:Panel x="200" y="110" width="224" height="157" title="登录系统"><s:Button x="24" y="92" label="登录" click="button1_clickHandler(event)" width="171" focusEnabled="true"/><s:TextInput x="67" y="10" id="user"/><s:TextInput x="67" y="49" id="pwd"/><s:Label x="20" y="15" text="用户名："/><s:Label x="20" y="55" text="密码："/></s:Panel></s:Application>

 

servlet代码：

package advang;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 flexServlet extends HttpServlet { protected void processRequest(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { response.setContentType("text/html;charset=UTF-8"); String user = request.getParameter("user"); String pwd = request.getParameter("pwd"); user = new String(user.getBytes("ISO8859-1"),"UTF-8"); pwd = new String(pwd.getBytes("ISO8859-1"),"UTF-8"); PrintWriter out = response.getWriter(); try { out.print("从服务器返回的数据[" + user + "][" + pwd + "]！"); } finally { out.close(); } } @Override protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { processRequest(request, response); } @Override protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { processRequest(request, response); } @Override public String getServletInfo() { return "Short description"; }}