[AS3]as3基于SharedObject的Cookie类源代码

/**     
 * @link http://www.klstudio.com     
 * @author Kinglong   
 * @playerversion flash player 9    
 * @asversion 3.0   
 * @version 0.5   
 */      
   
package com.klstudio.util {    
        
    import flash.net.SharedObject;      
   
    public class Cookie {    
            
        private var _time:uint;    
        private var _name:String;    
        private var _so:SharedObject;    
            
        public function Cookie(name:String = "klstudio", timeOut:uint=3600) {    
            _name = name;    
            _time = timeOut;    
            _so = SharedObject.getLocal(name, "/");    
        }    
            
        //cuplayer.com提示：清楚超时内容;    
        public function clearTimeOut():void {    
            var obj:* = _so.data.cookie;    
            if(obj == undefined){    
                return;    
            }    
            for(var key in obj){    
                if(obj[key] == undefined || obj[key].time == undefined || isTimeOut(obj[key].time)){    
                    delete obj[key];    
                }    
            }    
            _so.data.cookie = obj;    
            _so.flush();    
        }    
            
        private function isTimeOut(time:uint):Boolean {    
            var today:Date = new Date();            
            return time + _time * 1000 < today.getTime();    
        }    
            
        //cuplayer.com提示：获取超时值;    
        public function getTimeOut():uint {    
            return _time;    
        }    
            
        //cuplayer.com提示：获取名称;    
        public function getName():String {    
            return _name;    
        }    
            
        //清除Cookie所有值;    
        public function clear():void {    
            _so.clear();    
        }    
            
        //cuplayer.com提示：添加Cookie值    
        public function put(key:String, value:*):void {    
            var today:Date = new Date();    
            key = "key_"+key;    
            value.time = today.getTime();    
            if(_so.data.cookie == undefined){    
                var obj:Object = {};    
                obj[key] = value;    
                _so.data.cookie = obj;    
            }else{    
                _so.data.cookie[key] = value;    
            }    
            _so.flush();    
        }    
            
            
        //cuplayer.com提示：删除Cookie值;    
        public function remove(key:String):void {    
            if (contains(key)) {    
                delete _so.data.cookie["key_" + key];    
                _so.flush();    
            }    
        }    
            
        //cuplayer.com提示：获取Cookie值;    
        public function get(key:String):Object{         
            return contains(key)?_so.data.cookie["key_"+key]:null;    
        }    
            
        //cuplayer.com提示：Cookie值是否存在;    
        public function contains(key:String):Boolean{    
            key = "key_" + key;     
            return _so.data.cookie != undefined && _so.data.cookie[key] != undefined;    
        }    
    }    
}