在彈簧啟動424小時後使用Hibernate

引起的：com.mysql.jdbc.exceptions.jdbc4.communicationsexpection：從服務器成功收到的最後一個數據包為56,006,037毫秒。 成功發送到服務器的最後一個數據包是56,006,037毫秒前。比服務器配置的“ wait_timeout”值更長。 You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.

To address this issue, it is recommended to configure appropriate connection properties in the application's configuration file (e.g., application.properties）：

Remove idle connections if they have not been used within a specified time (spring.datasource.min-evictable-idle-time-millis).

Caused by: com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was 56,006,037 milliseconds ago.  The last packet sent successfully to the server was 56,006,037 milliseconds ago. is longer than the server configured value of 'wait_timeout'. You should consider either expiring and/or testing connection validity before use in your application, increasing the server configured values for client timeouts, or using the Connector/J connection property 'autoReconnect=true' to avoid this problem.

By implementing these configurations, the connection pool will regularly test the validity of connections and replace those that have become stale, ensuring stable即使在延長了不活動的時間之後，數據庫連接。