Flex和J2EE,jsp页面进行交互

首先撰写mxml文件：

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.macromedia.com/2003/mxml" verticalGap="20">

    <mx:HTTPService id="employeeSrv" method="get" url="employee.jsp" resultFormat="xml" result="getMessage()">
        <mx:request>
            <name>{name.text}</name>
            <email>{email.text}</email>
            <phone>{phone.text}</phone>
            <zipcode>{zipcode.text}</zipcode>
        </mx:request>
    </mx:HTTPService>
 
 <mx:Form>
 
  <mx:FormHeading label="增加员工"></mx:FormHeading>
  
        <mx:FormItem label="Name">
            <mx:TextInput id="name" width="200" />
        </mx:FormItem>

        <mx:FormItem label="Email">
            <mx:TextInput id="email" width="200" />
        </mx:FormItem>

        <mx:FormItem label="Phone">
            <mx:TextInput id="phone" width="200" />
        </mx:FormItem>

        <mx:FormItem label="ZipCode">
            <mx:TextInput id="zipcode" width="60" />
        </mx:FormItem>

        <mx:HBox width="100%" textAlign="center">
            <mx:Button label="Submit" click="employeeSrv.send();" />
            <mx:Button label="Reset" click="clearText();" />
        </mx:HBox>

    </mx:Form>
 
 <mx:Script>
  
  function getMessage()
  {
       var xmlNodes:Array = employeeSrv.result.childNodes;
       mx.controls.Alert.show( (xmlNodes[0].childNodes)[0].toString() , 'Message');
       clearText();
  }
  
  function clearText()
  {
       name.text = "";
       email.text = "";
       phone.text = "";
       zipcode.text = "";
  }

    </mx:Script>
 
</mx:Application>

然后是JSP文件：

<%@ page contentType="text/xml; charset=utf-8" %>
<%
request.setCharacterEncoding( "utf-8" );
System.out.println( request.getParameter( "name" ) );
System.out.println( request.getParameter( "phone" ) );
System.out.println( request.getParameter( "email" ) );
System.out.println( request.getParameter( "zipcode" ) );
%>
<root>
 <msg>Success!</msg>
</root>

注意红字的部分，在那里声明了一个HTTPService，当你点击Submit按钮的时候HTTPService就会把你填写的数据提交到后台的JSP页面，在JSP页面里就可以使用request.getParameter方法取出你填写的内容，JSP最后返回一个XML文档被mxml页面的getMessage()函数所处理，并在屏幕上显示出Success!

特别提示：HTTPService中的method属性在处理中文的时候请使用GET方式，POST方式会出乱码，这个问题很多朋友都遇到过，请注意。