flex 访问webservice方法及跨域问题解决

一、flex调用webserivice代码

import mx.rpc.soap.WebService;

import mx.rpc.events.FaultEvent;

  import mx.rpc.events.ResultEvent;

private var webService:WebService;
            protected function getWebService():void {
                var ws:WebService = new WebService();
                //ws.wsdl= "http://localhost:9999/wsServerExample?wsdl"//java
                ws.wsdl = "http://192.168.179.14:8082/WebServiceTest/WebServiceHelloPort?wsdl";//java
                //ws.wsdl = "http://192.168.179.254/ConvertFeaturesToJson/ConvertService.asmx?wsdl";//.net
                //ws.useProxy = true;
                ws.addEventListener(ResultEvent.RESULT,resultFunction);//增加返回结果的监听
                ws.addEventListener(FaultEvent.FAULT,onFault);
                //ws.getOperation("getGreeting").send("ok");
                ws.getOperation("SayHello").send("from sun");//SayHello为调用的方法名，from sun为传递进去的字字符串参数
                //ws.getOperation("Hello").send("ok");
                ws.loadWSDL();
            }   

            private function onFault(e:FaultEvent):void  {
                trace(e.message);
                //给用警告，偷懒不愿debug的时候这么来
                Alert.show("未能连接到WebService，请检查网络！","错误");
            }  

            private function resultFunction(event:ResultEvent):void{
                var s:String = event.result as String;
                Alert.show(s,"返回结果");
            }

二、策略文件（crossdomain.xml）内容

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE cross-domain-policy SYSTEM
    "http://www.macromedia.com/xml/dtds/cross-domain-policy.dtd" >
<cross-domain-policy>
   <site-control permitted-cross-domain-policies="all" />
   <allow-access-from domain="*" />
   <allow-http-request-headers-from domain="*" headers="*"/>
</cross-domain-policy>

记住对于Flash Player 9而言，crossdomain.xml文件内容出现了较大的变化<allow-http-request-headers-from domain="*" headers="*"/>  这个tag不可以少，否则访问webservice会报错。

tomcat中将crossdomain.xml文件放到ROOT根目录下。

iis中将crossdomain.xml文件放到wwwroot根目录下。