Flex HTTPService：檢索發送請求的服務

Question

有人可以告訴我我可以如何在HTTP請求完成後檢索HTTPService對象的引用（成功和失敗）？這是一個簡單的測試應用程序，用於存儲HTTP請求。處理響應（「httpResult」和「httpFault」函數）時，似乎無法檢索哪個調用成功/失敗。

這個應用程序的輸出總是「呼叫未找到」

<?xml version="1.0" encoding="utf-8"?> 
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009" 
        xmlns:s="library://ns.adobe.com/flex/spark" 
        xmlns:mx="library://ns.adobe.com/flex/mx" 
        initialize="init(event);"> 
<fx:Script> 
    <![CDATA[ 
     import mx.events.FlexEvent; 
     import mx.rpc.events.FaultEvent; 
     import mx.rpc.events.ResultEvent; 
     import mx.rpc.http.HTTPService; 

     private var calls:Array; 

     private function init(event:FlexEvent):void{ 
      calls = new Array(); 
      // working HTTP Call 
      test('http://v4.ipv6-test.com/api/myip.php'); 
      // not working HTTP Call 
      test('http://unknown.web.site.com/'); 
     } 
     private function test(URL:String):void{ 
      var service:HTTPService = calls[ calls.push(new HTTPService()) - 1]; 
      service.url = URL; 
      service.method = 'GET'; 
      service.addEventListener("result", httpResult); 
      service.addEventListener("fault", httpFault); 
      service.send(); 
     } 
     private function httpResult(e:ResultEvent):void{ 
      for(var i:int = calls.length; i>=0; i--){ 
       if(calls[i]==e.target || calls[i]==e.currentTarget){ 
        trace('Successful HTTP call found #' + i); 
        return; 
       } 
      } 
      trace('Successful HTTP call not found :('); 
     } 
     private function httpFault(e:FaultEvent):void{ 
      for(var i:int = calls.length; i>=0; i--){ 
       if(calls[i]==e.target || calls[i]==e.currentTarget){ 
        trace('Unsuccessful HTTP call found #' + i); 
        return; 
       } 
      } 
      trace('Unsuccessful HTTP call not found :('); 
     } 


    ]]> 
</fx:Script> 
<fx:Declarations> 
    <!-- Placer ici les éléments non visuels (services et objets de valeur, par exemple). --> 
</fx:Declarations> 
</s:WindowedApplication> 

Answer 1

我找到了，謝謝給eeerahul的答案（HTTPService/ResultEvent with Flex 3.2 versus Flex >= 3.5）

看起來像開發的Flex要隱藏我們的服務人員處理結果時。無論如何，有辦法通過訪問事件對象的私有（或受保護）屬性'請求'來檢索服務的引用。通過該屬性，我們可以將結果與執行呼叫的服務相對應。

是固定我的問題行：

var curr_request:Object = AbstractOperation(e.currentTarget).request; 

新的工作代碼：

<?xml version="1.0" encoding="utf-8"?> 
<s:WindowedApplication xmlns:fx="http://ns.adobe.com/mxml/2009" 
        xmlns:s="library://ns.adobe.com/flex/spark" 
        xmlns:mx="library://ns.adobe.com/flex/mx" 
        initialize="init(event);"> 
<fx:Script> 
    <![CDATA[ 
     import mx.events.FlexEvent; 
     import mx.rpc.events.*; 
     import mx.rpc.events.FaultEvent; 
     import mx.rpc.events.ResultEvent; 
     import mx.rpc.http.AbstractOperation; 
     import mx.rpc.http.HTTPService; 

     private var calls:Array; 

     private function init(event:FlexEvent):void{ 
      calls = new Array(); 
      // working HTTP Call 
      test('http://v4.ipv6-test.com/api/myip.php'); 
      // not working HTTP Call 
      test('http://unknown.web.site.com/'); 
     } 
     private function test(URL:String):void{ 
      var service:HTTPService = calls[ calls.push(new HTTPService()) - 1]; 
      service.url = URL; 
      service.method = 'GET'; 
      service.addEventListener("result", httpResult); 
      service.addEventListener("fault", httpFault); 
      service.send(); 
     } 
     private function httpResult(e:ResultEvent):void{ 
      var curr_request:Object = AbstractOperation(e.currentTarget).request; 
      for(var i:int = calls.length-1; i>=0; i--){ 
       if(calls[i].request==curr_request){ 
        calls[i].removeEventListener("result", httpResult); 
        calls[i].removeEventListener("fault", httpResult); 
        trace('Successful HTTP call found #' + i); 
        return; 
       } 
      } 
      trace('Successful HTTP call not found :('); 
     } 
     private function httpFault(e:FaultEvent):void{ 
      var curr_request:Object = AbstractOperation(e.currentTarget).request; 
      for(var i:int = calls.length-1; i>=0; i--){ 
       if(calls[i].request==curr_request){ 
        calls[i].removeEventListener("result", httpResult); 
        calls[i].removeEventListener("fault", httpResult); 
        trace('Unsuccessful HTTP call found #' + i); 
        return; 
       } 
      } 
      trace('Unsuccessful HTTP call not found :('); 
     } 


    ]]> 
</fx:Script> 
<fx:Declarations> 
    <!-- Placer ici les éléments non visuels (services et objets de valeur, par exemple). --> 
</fx:Declarations> 
</s:WindowedApplication>