FLEX实践—动态执行WebService方法

先看一段代码：
var ws:WebService ;

 

//调用WebService服务端发布的login(username,password)方法

private function doLogin():void{

  ws = new WebService();

  ws.wsdl = "http://localhost:9090/HelloWorld/LoginService?wsdl";

  ws.loadWSDL();

//调用login方法，方法参数为username,password

  ws.login.addEventListener(ResultEvent.RESULT,loginSuccessHandler);

  ws.login.addEventListener(FaultEvent.FAULT,loginFailHandler);

  ws.login("meteor","123");

}

private function loginSuccessHandler(event:ResultEvent):void{

  Alert.show("Login Successful!");

}

private function loginFailHandler(event:FaultEvent):void{

  Alert.shor("Login fail!");

}

 

//调用WebService服务端发布的getInfo()方法

private function doLogin():void{

  ws = new WebService();

  ws.wsdl = "http://localhost:9090/HelloWorld/getInfoWervice?wsdl";

  ws.loadWSDL();

//调用getInfo方法

  ws.getInfo.addEventListener(ResultEvent.RESULT,getInfoHandler);

  ws.getInfo.loginaddEventListener(FaultEvent.FAULT,faultHandler);

  ws.getInfo();

}

private function getInfoHandler(event:ResultEvent):void{

  Alert.show("Get info Successful!");

}

private function faultHandler(event:FaultEvent):void{

  Alert.shor(event.fault.message);

}

 

以上代码中存在很多重复片段：每次调用WebService，都要写重复的代码。下面来创建一个动态的WebService服务类

package common.service { import mx.controls.Alert; import mx.rpc.AbstractOperation; import mx.rpc.events.FaultEvent; import mx.rpc.events.ResultEvent; import mx.rpc.soap.SOAPHeader; import mx.rpc.soap.WebService; public class BaseWebService extends WebService { private var _callBackHandler:Function; private var _faultHandler:Function; private var _args:Array; public function BaseWebService() { super(); } public function set callBackHandler(callBackHandler:Function):void{ this._callBackHandler = callBackHandler; } public function get callBackHandler():Function{ return this._callBackHandler; } public function set args(args:Array):void{ this._args = args; } public function get args():Array{ return this._args; } public function set faultHandler(faultHandler:Function){ this._faultHandler = faultHandler; } public function get faultHandler():Function{ return this._faultHandler; } public function initWsdl(wsdl:String):void{ this.wsdl = wsdl; this.loadWSDL(); } public function initHeader(header:SOAPHeader):void{ this.clearHeaders(); this.addHeader(header); } public function sendOperation(functionName:String,args:Array):void{ //根据方法名动态调用WebService服务器的方法 var operation:AbstractOperation = this.getOperation(functionName); //为调用的方法添加监听器，回调函数由外部动态传入 operation.addEventListener(ResultEvent.RESULT,this.callBackHandler); //为调用的方法添加错误监听器，如果传入的错误处理方法为空，则调用默认的处理方法 if(this.faultHandler){ operation.addEventListener(FaultEvent.FAULT,this.faultHandler); }else{ operation.addEventListener(FaultEvent.FAULT,defaultFaultHandler); } //为调用的方法传参数，参数类型为Array operation.arguments = args; //执行调用的方法 operation.send(); } private function defaultFaultHandler(event:FaultEvent):void{ Alert.show(event.fault.message); } } }

 

在mxml中调用

var ws:BaseWebService;
private function login():void{

  ws = new BaseWebService();

  ws.initWsdl("http://localhost:9090/HelloWorld/getInfoWervice?wsdl");

  ws.sendOperation("login");

  ws.callBackHandler = loginSuccessHandler;

  ws.faultHandler = loginFailHandler;
  var arr:Array = new Array();
  arr.push("meteor");
  arr.push("123");

  ws.sendOperation("login",arr);

}