[AS3]as3与SharedObject记录缓存与清除缓存

之前做一个数据缓存，就顺便把写入缓存，清除缓存，获取缓存都整理了一下，其中也做了些参考，个人水平有限，有需要的就拿去改改用吧。

{ 
        import flash.net.SharedObject; 
        import flash.system.Security; 
        import flash.system.SecurityPanel; 
        public class cookie 
        { 
                private var so:SharedObject; 
                private var _name:String 
                public function cookie(file_name:String) 
                { 
                        // constructor code 
                        so = SharedObject.getLocal(file_name,"/"); 
                        _name=file_name 
                } 
                public function flushData(key:String,value:*):void 
                { 
                        //添加数据 
                        if (so.data.cookie == null) 
                        { 
                                var obj:Object = {}; 
                                obj[key] = value; 
                                so.data.cookie = obj; 
                        } else 
                        { 
                                so.data.cookie[key] = value; 
 
                        } 
                        trace(key+":"+so.data.cookie[key]); 
                        flush(); 
                } 
                public function deleteData(key:String):void 
                { 
                        //CuPlayer.com提示：删除数据值 
                        if (judge(key)) 
                        { 
                                delete so.data.cookie[key]; 
                                flush(); 
                        } 
                } 
                public function getName():String 
                { 
                        //CuPlayer.com提示：获取数据名 
                        return _name 
                } 
                public function getData(key:String):* 
                { 
                        //CuPlayer.com提示：获取数据值 
                        if (judge(key)) 
                        { 
                                return so.data.cookie[key]; 
                        } else 
                        { 
                                return null; 
                        } 
                } 
                public function clearData():void 
                { 
                        //CuPlayer.com提示：清除缓存 
                        so.clear(); 
                } 
                public function judge(key:String):Boolean 
                { 
                        //CuPlayer.com提示：判断数据是否存在 
                        return so.data.cookie != undefined && so.data.cookie[key] != undefined 
                         
                } 
                private function flush():void 
                { 
                        //CuPlayer.com提示：写入 
                        if (so) 
                        { 
                                try 
                                { 
                                        so.flush(); 
                                } 
                                catch (e:Error) 
                                { 
                                        Security.showSettings(); 
                                        Security.showSettings( SecurityPanel.LOCAL_STORAGE ); 
                                } 
                        } 
                } 
 
        } 
 
}