Java连接MySQL数据库8.0以上版本出现的问题

MySQL8.0以上版本使用以下方式连接时会报错:

Class.forName("com.mysql.jdbc.Driver");
Connection connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/testjdbc", "root", "123456");

报错信息:
Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is 'com.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary. java.sql.SQLException: The server time zone value '?й???????' 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.
意思是说原来的驱动器被废弃了,建议使用新驱动器:com.mysql.cj.jdbc.Driver
以及需要设置数据库服务器的时区。

8.0以上版本连接时需要做如下修改:

Class.forName("com.mysql.cj.jdbc.Driver");
Connection connection = DriverManager.getConnection("jdbc:mysql://localhost:3306/testjdbc?useSSL=false&serverTimezone=Asia/Shanghai", "root", "123456");

注意:

  1. MySQL 8.0 以上版本不需要建立 SSL 连接的,需要显式关闭
  2. 以及CST的设置要注意并不存在Asia/Beijing

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