具体报错如下:
Caused by: java.sql.SQLException: The server time zone value '�й���ʱ��' is unrecognized or represents more than one time zone. You must configure either the server or JDBC driver (via the serverTimezone configuration property) to use a more specifc time zone value if you want to utilize time zone support. at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:129) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:97) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:89) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:63) at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:73) at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:76) at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:827) at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:447) at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:237) at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:199) at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:136) at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:369) at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:198) at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:467) at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:541) at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115) at com.zaxxer.hikari.HikariDataSource.getConnection(HikariDataSource.java:112) at org.springframework.jdbc.datasource.DataSourceUtils.fetchConnection(DataSourceUtils.java:157) at org.springframework.jdbc.datasource.DataSourceUtils.doGetConnection(DataSourceUtils.java:115) at org.springframework.jdbc.datasource.DataSourceUtils.getConnection(DataSourceUtils.java:78) ... 102 common frames omitted
该异常与JDBC驱动有关,需要在url链接后加入serverTimezone=UTC
如果原来是这样
url: jdbc:mysql://localhost:3306/exam?useSSL=false&useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull
后面加上
url: jdbc:mysql://localhost:3306/exam?useSSL=false&useUnicode=true&characterEncoding=utf8&zeroDateTimeBehavior=convertToNull &serverTimezone=UTC
即可