/// <summary>
 /// 删除用户缓存信息
 /// </summary>
 /// <param name="key">用户token</param>
 /// <returns>成功返回true,失败返回false</returns>
 public bool RemoveUserInfo(string key)
 {
     lock (RedisDataBase)
     {
         return(RedisDataBase.KeyDelete(key));
     }
 }