最近由于工作需要开始看Flex的书籍，下面讲讲Flex作为UI然后后台使用Java作为服务器的三种方式，
（1）安装JDK,Tomcat,MyEclipse
（2）安装Flex Builder
（3）在MyEclipse中新建一个Java Web工程，这个工程可以使用SSH架构
（4）代开Flex Builder新建一个Web工程，注意在选择地下的服务器的时候，我们选择”J2EE“服务器，然后选择打出文件的包，导出到原先建的那个java Web工程目录下，这样Flex和Java的工程就搭建好了，下面介绍如何通信
1.使用remoteObject来通信，这种通信适合于Flex和Java之间有很大的数据交互，首先我们需要下载BlazeDS，然后将解压的文件放到WEB-INF文件夹覆盖Java Web工程下的WEB-INF文件夹
（1）新建一个Java类 FlexToJava
public class FlexToJava{
public String pritStr(String felxParam){
return "I am Java Server,Flex Input parameters is"+flexParam ;
}
}
(2)在WEB-INF文件夹的remoting-config.xml文件添加
<destination id="javaObject">
??????? <properties>
??????????? <source>com.test.FlexToJava</source> <!--这个类得路径-->
??????? </properties>
??? </destination>
(3)在Flexbuilder中新建一个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/mx" minWidth="955" minHeight="600">????
?????
??? <fx:Script>????
??????? <![CDATA[????
??????????? import mx.controls.Alert;????
??????????? import mx.rpc.events.ResultEvent;????
?????????????
??????????? protected function myFlex_resultHandler(event:ResultEvent):void{????
??????????????? var name:String=event.result as String;????
??????????????? Alert.show(name);????
??????????? }????
??????????? protected function button1_clickHandler(event:MouseEvent):void???
??????????? {??????
??????????????? flexObject.pritStr(txtName.text);????
??????? ]]>????
??? </fx:Script>????
??? <fx:Declarations>????
??????? <!-- 将非可视元素（例如服务、值对象）放在此处 -->????
??????? <s:RemoteObject id="flexObject" destination="javaOvject" result="myFlex_resultHandler(event)"/>????
??? </fx:Declarations>????
??? <s:Button x="209" y="135" label="按钮" click="button1_clickHandler(event)"/>????
??? <s:TextInput x="166" y="81" id="txtName"/>????
??? <s:Label x="10" y="81" text="请输入内容：" fontSize="15" fontWeight="bold" fontFamily="中易黑体"/>????
</s:Application> ??
2.使用HTTPService使得Flex和Java进行通信
(1)首先我在Java端写一个Servlet
public class JavaServlet extends HttpServlet{
public void doPost(requst,response){
response.getWriter.print("I am Java Server") ;
}
public void doGet(request,serif; font-size:14px; line-height:28px">doPost(request,response) ;
}
(2)在Web.xml中配置Servlet的访问路径,比如说是/java_servlet
(3)在Flex中新建一个application
<!--flex 与java交互-->
????????<s:HTTPService?id="service"?fault="service_faultHandler(event)"?result="service_resultHandler(event)"?url="http://localhost:8080/flexdemo/java_servlet">
????????????
????????</s:HTTPService>
result:是处理返回的函数，faul： 是处理出错的函数。
3.Flex与WebService进行交互
<!--flex与webservice交互这里调用一个天气预报的webservice-->
????????s:WebService?="ws"?
??????????????????????wsdl="http://www.webxml.com.cn/WebServices/WeatherWebService.asmx?wsdl"?
??????????????????????fault="ws_faultHandler(event)"?
??????????????????????result="ws_resultHandler(event)"?
??????????????????????showBusyCursor="true"
?????????????第二种调用webservice的方法<s:operation>?<s:operation?name="getWeatherbyCityName">?webservice中的方法名s:operation?name="getWeatherbyCityName"
????????????????传递的参数s:request
????????????????????参数名称必须与webservice中定义的参数名一致否则调用不成功报错theCityName
????????????????????????{city.text}
????????????????????s:operations:WebService>
