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。
