在店铺里获得使用者ID

String key_str  = HttpUtils.getCookieValue(this.getRequest(), SysConstants.COOKIE_NAME);
if(key_str!=null){
	key_str = CookieCrypt.authCode(key_str, "DECODE");
	String[] key_ar = key_str.split("\\|");  
	Long userid = Long.valueOf(key_ar[0]);
	param.setUserid(userid);
}
else{
	param.setUserid(null);
}