1.确认配置:
hikariDataSource.setIdleTimeout(60000);
hikariDataSource.setConnectionTimeout(60000);
hikariDataSource.setValidationTimeout(3000);
hikariDataSource.setLoginTimeout(5);
hikariDataSource.setMaxLifetime(60000);
2. 确认sqlSession 有没有被最终关闭。catch后加入finally{SqlSession.close()}
3. I managed to fix it