httpservice 公共类

flex httpservice 公共类

一、

package   
{  
    import flash.events.*;  
    import mx.collections.ArrayCollection;  
    import mx.collections.IViewCursor;  
    import mx.core.Application;  
    import mx.rpc.events.ResultEvent;  
    import mx.rpc.http.HTTPService;  
    import mx.utils.ArrayUtil;  
    public class PhotoService  
    {  
        private var service:HTTPService;  
        [Bindable]  
        public var galleries:ArrayCollection;  
        public function PhotoService(url:String)  
        {  
            service = new HTTPService();  
            service.url = url;  
            service.addEventListener(ResultEvent.RESULT, resultHandler);  
            service.send();  
        }  
        private function resultHandler(event:ResultEvent):void  
        {  
            var result:ArrayCollection = event.result.galleries.gallery is ArrayCollection  
                ? event.result.galleries.gallery as ArrayCollection  
                : new ArrayCollection(ArrayUtil.toArray(event.result.galleries.gallery));  
            var temp:ArrayCollection = new ArrayCollection();  
            var cursor:IViewCursor = result.createCursor();  
            while (!cursor.afterLast)  
            {  
                temp.addItem(new Gallery(cursor.current));         //解析成自己想要的类  
                cursor.moveNext();  
            }  
            galleries = temp;  
        }  
    }  
}  

二、

//封装类MyServiceCall  
package myas  
{  
   import mx.rpc.events.ResultEvent;  
   import mx.rpc.http.HTTPService;  
   public class MyServiceCall  
   {  
       private var hs:HTTPService;  
       private var f:Function;  
       public function MyServiceCall()  
       {  
           hs = new HTTPService;  
           hs.url = "data/ex.xml";  
           hs.addEventListener(ResultEvent.RESULT, resultHandler);  
       }  
       public function doCall(param:Function):void  
       {  
           this.f = param;  
           hs.send();  
       }  
       public function resultHandler(event:ResultEvent):void  
       {  
           f.call(null, event);  
       }  
   }  
}  
//main  
<?xml version="1.0" encoding="utf-8"?>  
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"  
               layout="absolute"  
               creationComplete="init()">  
   <mx:Script>  
       <!--[CDATA[  
           import mx.rpc.events.ResultEvent;  
           import myas.MyServiceCall;  
           import mx.controls.Alert;  
           private var result:ResultEvent;  
           private function init():void  
           {  
               var mysc:MyServiceCall = new MyServiceCall;  
              //调用 相当于send   
               mysc.doCall(onComplete);  
           }  
           //调用完后的处理方法，此方法中得到返回结果  
           private function onComplete(r:ResultEvent):void  
           {  
               result = r;  
           }  
       ]]-->  
   </mx:Script>  
</mx:Application>