org.mybatis.spring.MyBatisSystemException: nested exception is org.apache.ibatis.exceptions.PersistenceException:
### Error querying database. Cause: com.github.pagehelper.PageException: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 30033ms.
### Cause: com.github.pagehelper.PageException: java.sql.SQLTransientConnectionException: HikariPool-1 - Connection is not available, request timed out after 30033ms.
at org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBatisExceptionTranslator.java:77)
at org.mybatis.spring.SqlSessionTemplate$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:446)
at com.sun.proxy.$Proxy137.selectList(Unknown Source)
at org.mybatis.spring.SqlSessionTemplate.selectList(SqlSessionTemplate.java:230)
at org.apache.ibatis.binding.MapperMethod.executeForMany(MapperMethod.java:139)
at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:76)
at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:59)
at com.sun.proxy.$Proxy182.selectByExample(Unknown Source)
以上是本人报的错，解决办法为：
setIdleTimeout: 60000
setConnectionTimeout: 60000
setValidationTimeout: 3000
setLoginTimeout: 5
setMaxLifetime: 60000