惠阳区建设局网站,服装私人订制网站,网络软文范例,哪里有工程做的网站在上一节#xff0c;我们利用FrontController 去映射 Event与Command 在这一节我们主要针对Command这部分动作做介紹。在RIA应用程序中#xff0c;不可或缺的部份就是跟后台服务器连接进行数据传递。Command通过Delegate去做Services的部份(包含Remoting,WebServices,…等) C…在上一节我们利用FrontController 去映射 Event与Command 在这一节我们主要针对Command这部分动作做介紹。在RIA应用程序中不可或缺的部份就是跟后台服务器连接进行数据传递。Command通过Delegate去做Services的部份(包含Remoting,WebServices,…等) Command: 操作Cairngorm Business以及呼叫Cairngorm Delegates这些回传所取得的资料Command会再将它更新到Model Locator Delegate: 由Command所产生将远程呼叫(RPC:remote procedure calls[HTTP, Web Services, etc])实例化并将结果传回给Command。 Service:用来定义连接Server端的呼叫(RPC:remote procedure calls[HTTP, Web Services, etc])来获取远程数据。 在Delegate中我们会作一个call service的部份而Services相关的定义与设定就纪录在Service Locator。 延续上一个项目我们修改LoginCommand的部份要通过Delegate去做Remoting呼叫Server端 login function去数据库查看判断账号密码是否正确。 所以我们先在项目中新增business文件夹。 新增两个文件一个是Service.mxml组件。用来定义纪录可以使用的Services。 因为组件的类型不是內建所以先随便选一个再改mxml的內容这里示范的是使用搭配.NET Remoting的Freeware ” FluorineFx “可以参考這裡。 代码如下 ?xml version1.0 encodingutf-8?cairngorm:ServiceLocatorxmlns:mxhttp://www.adobe.com/2006/mxml xmlns:cairngormcom.adobe.cairngorm.business.*!-- Login Service --mx:RemoteObjectidRemoting_Services sourceRemoting.Services destinationfluorine showBusyCursortruemx:method namelogin //mx:RemoteObject /cairngorm:ServiceLocator 另一个是LoginDelegate.as类用来连接Service并将取得的资料回传给Command。 代码如下 package org.rianotes.CairngormSample.business
{ import com.adobe.cairngorm.business.ServiceLocator;import mx.rpc.IResponder;import org.rianotes.CairngormSample.vo.User;public class LoginDelegate {private var responder:IResponder;private var service:Object;public function LoginDelegate(responder:IResponder) {this.responder responder;//透過ServiceLocator取得連接Service的方式this.service ServiceLocator.getInstance().getRemoteObject(Remoting_Services);}public function login(loginAttempt:User):void{//這部份要跟Server端Remoting Service 的名字相同傳入值型態也要相同var call:Object service.login(loginAttempt);//處理伺服器的傳回值call.addResponder( responder );}}
} 为了传送账号和密码所以也要针对Value object作修改 User - Value objectpackage org.rianotes.CairngormSample.vo
{//.NET 那邊User.cs的 namespace[RemoteClass(aliasRemoting.Objects.User)]public class User{public var UserID:String;public var Password:String;public var Email:String;public function User(){}}
} 然后在LoginCommand中加入Responder要用到的result,fault function代码如下 package org.rianotes.CairngormSample.commands
{import com.adobe.cairngorm.commands.ICommand;import com.adobe.cairngorm.control.CairngormEvent;import mx.controls.Alert;import mx.rpc.IResponder;import org.rianotes.CairngormSample.business.LoginDelegate;import org.rianotes.CairngormSample.events.LoginEvent;import org.rianotes.CairngormSample.model.ViewModelLocator;//加入IResponder 的Interfac才會呼叫result,falut ↓↓↓ public class LoginCommand implements ICommand , IResponder{public var model:ViewModelLocator ViewModelLocator.getInstance();public function LoginCommand(){}//ICommand Interface functionpublic function execute(event:CairngormEvent):void{var loginEvent:LoginEvent event as LoginEvent;var delegate:LoginDelegate new LoginDelegate(this);delegate.login(loginEvent.loginAttempt);}//delegate.login 成功取得回傳時做的functionpublic function result( event :Object):void{if(event.result true){model.workflowState ViewModelLocator.MAIN_SCREEN;}else{mx.controls.Alert.show(請確認帳號密碼是否正確);}}//delegate.login 失敗時做的functionpublic function fault( event :Object):void{trace(連線錯誤)}}
}LoginView.mxml也要做部分修改代码如下 ?xml version1.0 encodingutf-8?mx:VBox xmlns:mxhttp://www.adobe.com/2006/mxml horizontalAlignright xmlns:componentsorg.rianotes.CairngormSample.view.components.*mx:Script![CDATA[ import org.rianotes.CairngormSample.vo.User; import org.rianotes.CairngormSample.events.LoginEvent; import org.rianotes.CairngormSample.model.ViewModelLocator; [Bindable] private var model:ViewModelLocator ViewModelLocator.getInstance(); private function login(e:MouseEvent):void{ var user:User new User(); user.UserID ti_UserID.text; user.Password ti_Password.text; var loginEvent:LoginEvent new LoginEvent(user); //發送Login Event loginEvent.dispatch(); }]]/mx:Scriptmx:Form borderStylesolid width100%mx:FormItem labelUserID : width100%mx:TextInput idti_UserID width100%//mx:FormItemmx:FormItem labelPassword: width100%mx:TextInput idti_Password width100%//mx:FormItem/mx:Formmx:Button labelLogin clicklogin(event) //mx:VBox 最后我们在Main.mxml中加入Service代码如下 ?xml version1.0 encodingutf-8?mx:Application xmlns:mxhttp://www.adobe.com/2006/mxml xmlns:vieworg.rianotes.CairngormSample.view.* layoutabsolute xmlns:controlorg.rianotes.CairngormSample.control.* xmlns:businessorg.rianotes.CairngormSample.business.*mx:Script![CDATA[ import org.rianotes.CairngormSample.model.ViewModelLocator; [Bindable] private var model:ViewModelLocator ViewModelLocator.getInstance();]]/mx:Script!--Cairngorm FrontController :讓app中擁有SampleController--control:SampleController idcontroller /!--Cairngorm Services--business:Services idservices /mx:ViewStack idvsMain width100% height100% selectedIndex{model.workflowState} !--第0個View--view:LoginView /!--第1個View--view:MainView //mx:ViewStack /mx:Application 转载于:https://www.cnblogs.com/GFantasy/archive/2010/02/24/1672300.html
