19:46:48  SN:860132061696803 content :设备不在线   session is null :860132061696803
19:46:51  SN:860132061696803 content :设备不在线   session is null :860132061696803
19:46:56  SN:860132061696803 content :设备不在线   session is null :860132061696803
19:46:59  SN:860132061696803 content :设备不在线   session is null :860132061696803
19:47:01  SN:860132061696803 content :设备不在线   session is null :860132061696803