Chocodonut's Note :: WebService

2008/07/22 11:36

WebService

2008/07/22 11:36 in Flex

- HTTP 프로토콜을 사용해 WSDL이 기술하는 URL 상의 웹 서비스 함수를 호출하여 그 결과를 SOAP 방식으로
되돌려 받는다.
- HTTPService와 마찬가지로 WAS를 구성하지 않아도 된다.
- mx.rpc.soap.mxml.WebService 패키지에 포함.
- WebService operation을 정의해야 한다(operation 태그와 request 태그 사용).
- WebService 인스턴스.operation 이름.send() 메소드를 사용해 WebService를 호출한다.

private function resultHandler(event:ResultEvent):void {
          DG.dataProvider = event.result; // SOAP 메시지 결과값
      }

private function faultHandler(event:FaultEvent):void {
          Alert.show(event.fault.message);
      }
    ]]>
  </mx:Script>

<mx:WebService id="MyWebService" useProxy="false" showBusyCursor="true"
    wsdl="http://weblogs.macromedia.com/mxna/webservices/mxna2.cfc?wsdl"
    result="resultHandler(event)" fault="faultHandler(event)">
    <mx:operation name="getMostPopularPosts">
      <mx:request> 
        <daysBack>30</daysBack>
        <limit>5</limit>
      </mx:request>
    </mx:operation>
  </mx:WebService>

<mx:Button x="10" y="10" label="WebService 호출"
    click="MyWebService.getMostPopularPosts.send()"/>
  <mx:DataGrid id="DG" x="10" y="40"/>
</mx:Application>

- ActionScript를 이용한 예제.

<?xml version="1.0" encoding="utf-8"?>
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="absolute">
  <mx:Script>
    <![CDATA[
      import mx.controls.Alert;
      import mx.rpc.soap.mxml.WebService;
      import mx.rpc.events.ResultEvent;
      import mx.rpc.events.FaultEvent;
            
      private function f():void {
          var MyWebService:WebService = new WebService();
          MyWebService.wsdl =           
              "http://weblogs.macromedia.com/mxna/webservices/mxna2.cfc?wsdl";
          MyWebService.showBusyCursor = true;         
          MyWebService.addEventListener(ResultEvent.RESULT, resultHandler);
          MyWebService.addEventListener(FaultEvent.FAULT, faultHandler);
                  
          var obj:Object = new Object();
          obj.daysBack = 30;
          obj.limit = 5;
                 
          MyWebService.getOperation("getMostPopularPosts").arguments = obj;
          MyWebService.loadWSDL(
              "http://weblogs.macromedia.com/mxna/webservices/mxna2.cfc?wsdl");
          MyWebService.getMostPopularPosts.send(); // send(obj)가 아님
      }
            
      private function resultHandler(event:ResultEvent):void {
          DG.dataProvider = event.result; // SOAP 메시지 결과값
      }
            
      private function faultHandler(event:FaultEvent):void {
          Alert.show(event.fault.message);
      }
    ]]>
  </mx:Script>

<mx:Button x="10" y="10" label="WebService 호출" click="f()"/>
  <mx:DataGrid id="DG" x="10" y="40"/>
</mx:Application>

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