15:52:21  SN:355287200009391 content :设备不在线   session is null :355287200009391
15:52:21  SN:355287200009391 content :设备不在线   session is null :355287200009391
15:52:21  SN:355287200009391 content :设备不在线   session is null :355287200009391
16:05:12  SN:355287200009391 content :设备不在线   session is null :355287200009391
16:05:12  SN:355287200009391 content :设备不在线   session is null :355287200009391
16:05:12  SN:355287200009391 content :设备不在线   session is null :355287200009391