/// <summary>
        /// 开始消费
        /// </summary>
        public void Start()
        {
            workTask = new Task(() =>
            {
                while (!stopConsume)
                {
                    RantaTaskBase task = queue.Dequeue();

                    if (task != null)
                    {
                        task.Start();
                    }
                    else
                    {
                        Thread.Sleep(500);
                    }
                }
            });
            workTask.Start();
        }