HikariPool-1 - Driver does not support get/set network timeout for connections. (com.mysql.jdbc.JDBC4Connection.getNetworkTimeout()I)
解決辦法：在application.properties數據庫連接中增加：
&serverTimezone=UTCRegistered driver with driverClassName=com.mysql.jdbc.Driver was not found, trying direct instantiation.
解決辦法：
打開mysql，輸入set global time_zone='+8:00';
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