JDBC 连接 MySQL 8.0.15+ 常见错误记录

Posted 2020-12-23 剑道子羽

1. No suitable driver found for mysql:jdbc://localhost:3306/test 2. Not allowed to connect to this MySQL server 3. The server time zone value \'�й���׼ʱ��\' is unrecognized

课后复习

1. No suitable driver found for mysql:jdbc://localhost:3306/test

错误原因：

mysql:jdbc://localhost:3306/test

jdbc:mysql://localhost:3306/test

2. Not allowed to connect to this MySQL server：

错误原因：

jdbc:mysql://192.168.3.20:3306/test

这个设置默认是没有权限的，需要授权

• 使用root账号查询权限：

SELECT USER, HOST FROM mysql.user WHERE USER=\'root\';

• 授权

GRANT ALL PRIVILEGES ON test.* TO \'root\'@\'192.168.3.20\' IDENTIFIED BY \'密码\';
flush privileges;

3. The server time zone value \'�й���׼ʱ��\' is unrecognized

jdbc:mysql://192.168.3.20:3306/test
// 更改为
jdbc:mysql://192.168.3.20:3306/test?serverTimezone=UTC