混世魔王 的技术博客

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/**

Flash Cookie Stuffing

  **/
package laohan.flashcookie {
    //注：由于我没有装Flex，所以只好使用Flash CS3来嵌入。
    //如果使用Flash Developer，则MovieClip这个包可以不包含。
    import flash.display.MovieClip;
    import flash.net.SharedObject;
    import flash.external.ExternalInterface;
    public class myFlashCookie extends MovieClip {//如果使用Flex，可以不继承这个类。
        private var cookieTimeOut:uint;
        private var cookieName:String;
        private var cookieSharedObj:SharedObject;
                private var currentCookie:Object;
        private var cookieValue:String;
        //构造函数。
        public function myFlashCookie(cName:String = "hunsimowang", timeOut:uint=3600) {
            cookieName = cName;
            cookieTimeOut = timeOut;
            cookieSharedObj = SharedObject.getLocal(cName, "/" );
                    if(isCookieExist(cName)){//如果FlashCookies存在。
                        currentCookie = getCookies(cName);
                //调用JavaScript里的jsSetCookies方法来设置HTTPCookie
                ExternalInterface.call("jsSetCookies",{fcookie:currentCookie});
                //trace(currentCookie);
                    }
        }
        //到期删除Cookies
        public function clearTimeOut():void {
            var obj:* = cookieSharedObj.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];
                }
            }
            cookieSharedObj.data.cookie = obj;
            cookieSharedObj.flush();
        }
        //添加Cookies( key-value )
        public function saveCookies(key:String, value:*):void {
            var today  ate = new Date();
            key = "key_"+key;
            value.time = today.getTime();
            if(cookieSharedObj.data.cookie == undefined){
                var obj:Object = {};
                obj[key] = value;
                cookieSharedObj.data.cookie = obj;
            }else{
                cookieSharedObj.data.cookie[key] = value;
            }
            cookieSharedObj.flush();
        }
        //删除当前Cookies
        public function removeCookies(key:String):void {
            if (isCookieExist(key)) {
                delete cookieSharedObj.data.cookie["key_" + key];
                cookieSharedObj.flush();
            }
        }
        //通过Key来获取Cookies值。
        public function getCookies(key:String):Object{
            return isCookieExist(key)?cookieSharedObj.data.cookie["key_"+key]:null;
        }
        //检查Cookies是否存在。
        public function isCookieExist(key:String):Boolean{
            key = "key_" + key;
            return cookieSharedObj.data.cookie != undefined && cookieSharedObj.data.cookie[key] != undefined;
        }
        //检查Cookies的到期时间
        private function isTimeOut(time:uint):Boolean {
            var today  ate = new Date();
            return time + cookieTimeOut * 1000 < today.getTime();
        }
        //取得Cookies的到期时间;
        public function getTimeOut():uint {
            return cookieTimeOut;
        }
        //取得Cookies名称。
        public function getName():String {
            return cookieName;
        }
        //清除所有的Cookies值。
        public function clearCookies():void {
            cookieSharedObj.clear();
        }
    }
}

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//先定义一个全局变量
var flashCookiesValue = Null;
var jsSetCookies = function(flahCookieValue){
    var o = arguments[0];
    flashCookiesValue = o.fcookie;//在SWF执行时传递过来的值。
    document.cookie="hunsimowang="+flashCookiesValue+";path=/;expires=Fri, 04-Dec-2005 08:44:07 GMT;domain=26836659.blogcn.com";
};