flex 3 + .net开发flash Remoting四 --- 完整代码及Demo下载

flex 3 + .net开发flash Remoting四 --- 完整代码及Demo下载

一. 相关说明：
    本篇将呈现完整的Flash Remoting访问远程服务器，包括以可视化组件方式和以编程方式访问远程服务器。 Asp.net服务器端和Flex客户端完整代码下载。

二. 相关代码预览：
    1. frServices.as，以编程方式访问远程服务器。

package com.demo.fr
{
    import flash.events.EventDispatcher;
    import flash.net.NetConnection;
    import flash.net.Responder;
    
    //用代码调用flash Remoting。
    public class frServices
    {
        //Remoting服务器对象完整名称。
        private var name_ServerClass : String = "Hxw.Demo.FlashRemoting.Hellow";
        //初始化一个事件广播对象。
        private var eventDispatcher : EventDispatcher = new EventDispatcher();        
        //事件关键字定义：Event_KEY_Success_DisplayHellow。
        public static var Event_KEY_Success_DisplayHellow : String = "Event_KEY_Success_DisplayHellow";
        //事件关键字定义：Event_KEY_Success_SayHellowWorld。
        public static var Event_KEY_Success_SayHellowWorld : String = "Event_KEY_Success_SayHellowWorld";
        //事件关键字定义：Event_KEY_Success_GetUsers。
        public static var Event_KEY_Success_GetUsers : String = "Event_KEY_Success_GetUsers";        
        //事件关键字定义：Event_KEY_Fault。
        public static var Event_KEY_Fault : String = "Event_KEY_Fault";            
        //Remoting连接对象。
        private var conn : NetConnection = null;
        //Flash Remoting方法返回值获取对象。
        private var rp :Responder = null;
        
        //构造器。
        public function frServices()
        {
            
        }
        
        //开始调用远程服务方法。
        public function preCall(result : Function):void
        {            
            //初始化Remoting连接对象。
            this.conn = new NetConnection();            
            //调用connect( )方法，传递进Flash Remoting网关的URL。
            this.conn.connect("http://localhost:5678/WebFR/Gateway.aspx");            

            this.rp = new Responder(result,onError);    
        }
        
        //调用远程服务方法。
        public function call_DisplayHellow():void
        {                
            this.preCall(onResult_DisplayHellow);
            
            //对象的call( )方法调用Flash Remoting方法，call( )方法需要两个参数，
            //第一个参数指定方法名称和路径，第二个参数指定响应处理函数，如果不需要处理函数，可直接设为null
            //处理FlashRemoting响应。
            this.conn.call(this.name_ServerClass + ".DisplayHellow",this.rp);
        }
        
        //调用远程服务方法。
        public function call_SayHellowWorld(name : String):void
        {
            this.preCall(onResult_SayHellowWorld);
            this.conn.call(this.name_ServerClass + ".SayHellowWorld",this.rp,name);
        }
        
        //调用远程服务方法。
        public function call_GetUsers():void
        {
            this.preCall(onResult_GetUsers);
            this.conn.call(this.name_ServerClass + ".GetUsers",this.rp);
        }        
        
        //调用服务成功。
        private function onResult_DisplayHellow(result : Object) : void
        {
            this.resultHandler(result,"DisplayHellow",frServices.Event_KEY_Success_DisplayHellow);
        }
        
        private function onResult_SayHellowWorld(result : Object) : void
        {
            this.resultHandler(result,"SayHellowWorld",frServices.Event_KEY_Success_SayHellowWorld);
        }
        
        private function onResult_GetUsers(result : Object) : void
        {
            this.resultHandler(result,"GetUsers",frServices.Event_KEY_Success_GetUsers);
        }        
        
        //调用服务成功的处理。
        private function resultHandler(result : Object,targetName : String ,eventKey : String) : void
        {
            var ce : CUEvent = new CUEvent(eventKey);
            ce.Sender = result;
            ce.CurrentTargetName = targetName;
            
            this.eventDispatcher.dispatchEvent(ce);
        }
        
        //调用服务失败。
        private function onError(error : Object):void
        {
            var ce : CUEvent = new CUEvent(Event_KEY_Fault);
            ce.Sender = error;
            
            this.eventDispatcher.dispatchEvent(ce);    
        }
        
        //创建一个供外部调用的附加事件侦听的方法。
        public function addEventListener(type : String , listener : Function):void
        {
            this.eventDispatcher.addEventListener(type,listener);    
        }

    }
}

    2. CUEvent.as，自定义事件。

package com.demo.fr
{
    import flash.events.Event;
    
    //从Event继承一个类。
    //为什么as3中仅仅能够定义一个构造器，郁闷。
    public class CUEvent extends Event
    {
        //数据实体。
        private var _sender : Object = null;
        //方法名。
        private var  _currentTargetName: String = "";
        
        //构造器(为什么as3中仅仅能够定义一个构造器，郁闷)。
        public function CUEvent(type : String,bubbles : Boolean = false,cancelable : Boolean = false)
        {
            super(type,bubbles,cancelable);
        }    
        
        //获取 数据实体。
        public function get Sender():Object
        {
            return this._sender;
        }

        //设置 数据实体。
        public function set Sender(value : Object) : void
        {
            this._sender = value;
        }
        
        //获取 方法名称。
        public function get CurrentTargetName() : String
        {
            return this._currentTargetName;
        }
        
        //设置 方法名称。
        public function set CurrentTargetName(value : String) :void
        {
            this._currentTargetName = value;
        }

    }
}

    3. User.as，数据模型，对应服务器端的 User.cs。

package com.demo.fr
{
    [RemoteClass(alias="Hxw.Demo.FlashRemoting.User")]
    public class User
    {
        public function User()
        {
        }
        
        private var _name : String = "";
        private var _age : int = 0;
        private var _sex : String = "";
        
        public function get Name():String
        {
            return this._name;
        }
        
        public function set Name(v:String):void
        {
            this._name = v;
        }
        
        public function get Age():int
        {
            return this._age;
        }
        
        public function set Age(v:int):void
        {
            this._age = v;
        }
        
        public function get Sex():String
        {
            return this._sex;
        }
        
        public function set Sex(v:String):void
        {
            this._sex = v;
        }
        
        public function toString():String
        {
            return "姓名：" + this._name + "；年龄：" + this._age.toString() + "；性别：" + this._sex;
        }
    }
}

    4.MXML Application代码。

<? xml version = " 1.0 "  encoding = " utf-8 " ?>
< mx:Application xmlns:mx = " http://www.adobe.com/2006/mxml "  layout = " absolute " >

     < mx:Script >
         <! [CDATA[
            import com.demo.fr.CUEvent;
            import flash.net.navigateToURL;
            import mx.collections.ArrayCollection;            
            import mx.rpc.events.ResultEvent;
            import mx.rpc.events.FaultEvent;
            import mx.controls.Alert;
            import com.demo.fr.User;
            import com.demo.fr.frServices;
            import mx.styles.StyleManager;
            
            
             //1表示以可视化组件方式访问过程服务器。
              //2表示以编程方式访问过程服务器。
            private  var  mode :  int   =   2 ;
            
             // 调用相关的Remoting服务或模式。
            private  function  callServer(fn : String): void
             {                
                if(this.mode == 1)
                {
                    switch(fn)
                    {
                        case "DisplayHellow":
                            sampleRemoteObject.DisplayHellow();
                            break;
                        case "SayHellowWorld":
                            sampleRemoteObject.SayHellowWorld(this.txtMessage.text);
                            break;                        
                        case "GetUsers":
                            sampleRemoteObject.GetUsers();
                            break;
                    }
                }
                else
                {
                    var fr : frServices = new frServices();    
                    this.addEventListener(frServices.Event_KEY_Fault,onRemoteFault2);
                    
                    switch(fn)
                    {
                        case "DisplayHellow":
                            fr.addEventListener(frServices.Event_KEY_Success_DisplayHellow,onRemoteResult2);
                            fr.call_DisplayHellow();
                            break;
                        case "SayHellowWorld":
                            fr.addEventListener(frServices.Event_KEY_Success_SayHellowWorld,onRemoteResult2);
                            fr.call_SayHellowWorld(this.txtMessage.text);
                            break;                        
                        case "GetUsers":
                            fr.addEventListener(frServices.Event_KEY_Success_GetUsers,onRemoteResult2);
                            fr.call_GetUsers();
                            break;
                    }
                }
            }
            
            
             // 当Remoting服务调用成功的回调函数(控件调用)。
            private  function  onRemoteResult(event:ResultEvent) :  void
             {
                this.remoteSuccessHandler(event.result,event.currentTarget.name);                
            }
            
             // 当Remoting服务调用失败的回调函数(控件调用)。
            private  function  onRemoteFault(event:FaultEvent) :  void
             {
                this.remoteFault(event.fault.toString());
            }         
            
             // 当Remoting服务调用成功的回调函数(代码实现)。
            private  function  onRemoteResult2(event : CUEvent): void
             {
                this.remoteSuccessHandler(event.Sender,event.CurrentTargetName);
            }

             // 当Remoting服务调用失败的回调函数(代码实现)。
            private  function  onRemoteFault2(event : CUEvent) :  void
             {
                this.remoteFault(event.Sender.toString());
            }         
            
             // 当Remoting服务调用成功的处理。
            private  function  remoteSuccessHandler(data : Object,fn : String): void
             {
                switch(fn)
                {
                    case "DisplayHellow":
                        Alert.show(data as String,"DisplayHellow");
                        break;
                    case "SayHellowWorld":
                        Alert.show(data as String,"SayHellowWorld");
                        break;
                    case "GetUsers":
                        var userList : ArrayCollection = data as ArrayCollection;
                        this.dgUsers.dataProvider = userList;
                        break;
                }
            }
            
             // 当Remoting服务调用失败的处理。
            private  function  remoteFault(desc:String): void
             {
                Alert.show(desc,"Remoting调用出错");
            }             

            
             // 清空DataGrid中的数据。
            private  function  clearUsers() :  void
             {
                this.dgUsers.dataProvider = null;
            }
            
             // 链接到本人的博客。
            private  function  getURL(): void
             {
                flash.net.navigateToURL(new URLRequest("http://mrhgw.cnblogs.com"));
            }     
            
        ]] >
     < / mx:Script>    
    
     < mx:RemoteObject id = " sampleRemoteObject "
        destination = " fluorine "
        source = " Hxw.Demo.FlashRemoting.Hellow "
        showBusyCursor = " true " >
        
        <!-- 这里是.NET中的方法，name  =  方法名  -->        
         < mx:method name = " DisplayHellow "  result = " onRemoteResult(event) "  fault = " onRemoteFault(event) "/ >
         < mx:method name = " SayHellowWorld "  result = " onRemoteResult(event) "  fault = " onRemoteFault(event) "/ > 
         < mx:method name = " GetUsers "  result = " onRemoteResult(event) "  fault = " onRemoteFault(event) "/ >        
     < / mx:RemoteObject>
     < mx:Panel layout = " absolute "  title = " Flash Remoting Demo "  fontSize = " 25 "  right = " 19 "  left = " 19 "  bottom = " 67 "  top = " 20 " >
         < mx:TitleWindow x = " 28 "  y = " 29 "  width = " 290 "  height = " 116 "  layout = " absolute "  title = " Display Hellow World "  fontSize = " 15 " >
             < mx:Button x = " 10 "  y = " 21 "  label = " Call "  id = " btDisplayHellow "  width = " 120 "  fontSize = " 15 "  click = " callServer('DisplayHellow'); "/ >
         < / mx:TitleWindow>
         < mx:TitleWindow layout = " absolute "  title = " Say Hellow World "  top = " 168 "  bottom = " 30 "  left = " 28 "  width = " 290 "  fontSize = " 15 " >
             < mx:TextInput x = " 10 "  y = " 30 "  width = " 232 "  id = " txtMessage "  fontSize = " 13 "/ >
             < mx:Button x = " 10 "  y = " 76 "  label = " Call "  id = " btSayHellowWorld "  width = " 120 "  fontSize = " 15 "  click = " callServer('SayHellowWorld') "/ >
             < mx:Label x = " 10 "  y = " 0 "  text = " Name： "  fontSize = " 13 "  fontWeight = " bold "/ >
         < / mx:TitleWindow>
         < mx:TitleWindow layout = " absolute "  title = " Get Users "  left = " 340 "  right = " 34 "  bottom = " 30 "  top = " 29 "  fontSize = " 15 " >
             < mx:Button x = " 10 "  y = " 21 "  label = " Call "  id = " btGetUser "  width = " 120 "  fontSize = " 15 "  click = " callServer('GetUsers') "/ >
             < mx:DataGrid id = " dgUsers "  fontSize = " 13 "  right = " 10 "  left = " 10 "  top = " 65 "  bottom = " 10 " >
                 < mx:columns >
                     < mx:DataGridColumn headerText = " 姓名 "  dataField = " Name "/ >
                     < mx:DataGridColumn headerText = " 性别 "  dataField = " Sex "/ >
                     < mx:DataGridColumn headerText = " 年龄 "  dataField = " Age "/ >
                 < / mx:columns>
             < / mx:DataGrid>
             < mx:Button x = " 148 "  y = " 21 "  label = " Clear "  id = " btClear "  width = " 120 "  fontSize = " 15 "  click = " clearUsers() "/ >
         < / mx:TitleWindow>
     < / mx:Panel>
     < mx:HRule right = " 10 "  left = " 10 "  bottom = " 44 "  height = " 10 "/ >
     < mx:LinkButton label = " Powered by Hxw(http://mrhgw.cnblogs.com) "  fontSize = " 15 "  fontStyle = " italic "  right = " 45 "  bottom = " 8 "  click = " getURL(); "/ >
    
< / mx:Application>

    5. 注意。
        在MXML Application的代码中，有代码：private var mode : int = 2;mode值为1表示以可视化组件方式访问远程服务器；mode值为2表示以编程方式访问远程服务器。

三. Demo下载。
    1. ASP.NET服务器端代码  下载 。
    2. Flex客户端代码 下载 。

四. 结束语。
    flex 3 + .net开发flash Remoting本系列文章至此结束，如有谬误敬请指正，欢迎一起学习交流。