17:44:05  SN:860132061700183 content :设备不在线   session is null :860132061700183
17:44:22  SN:860132061700183 content :设备不在线   session is null :860132061700183
17:44:25  SN:860132061700183 content :设备不在线   session is null :860132061700183
17:45:38  SN:860132061700183 content :设备不在线   session is null :860132061700183
18:14:31  SN:860132061700183 content :设备不在线   session is null :860132061700183