1、Communications link failure，The last packet successfully received from the server was * **millisecond ago.
The last packet successfully sent to the server was * **millisecond ago。
2、PKIX：unable to find valid certification path to requested target
When the above two errors are reported, check whether useSSL=true is added to the database connection string, if necessary, delete it or set it to false
jdbc.url.filter=jdbc:mysql://192.168.1.104:3306/dev_lodb?useUnicode=true&characterEncoding=utf-8&allowMultiQueries=true&useSSL=false
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