AS3 Cookie类

/**
 * @link
 * @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, "/");
        }

        //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();
        }

        //获取超时值;
        public function getTimeOut():uint {
            return _time;
        }

        //获取名称;
        public function getName():String {
            return _name;
        }

        //清除Cookie所有值;
        public function clear():void {
            _so.clear();
        }

        //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();
        }


        //删除Cookie值;
        public function remove(key:String):void {
            if (contains(key)) {
                delete _so.data.cookie["key_" + key];
                _so.flush();
            }
        }

        //获取Cookie值;
        public function get(key:String):Object{
            return contains(key)?_so.data.cookie["key_"+key]:null;
        }

        //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;
        }
    }
}