Flex通过HTTPService与servlet通信

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>

<?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";
    }

}