毕设问题记录

Spring Boot 连接 MySQL 数据库

application.properties文件配置：

#配置数据库
spring.datasource.url= jdbc:mysql://127.0.0.1:3306/demo01
spring.datasource.username= root
spring.datasource.password= root
spring.datasource.driver-class-name= com.mysql.jdbc.Driver

参考：常用数据库JDBC URL格式

//错误
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.

原因：MySQL连接驱动更新了。

//异常
java.sql.SQLException: The server time zone value 'Öйú±ê׼ʱ¼ä' is unrecognized or represents more than one time 

原因：未指定时区serverTimezone，GMT%2B6为东八区，即中国时区。

修改后配置为：

#配置数据库
spring.datasource.url= jdbc:mysql://127.0.0.1:3306/demo01?serverTimezone=GMT%2B8
spring.datasource.username= root
spring.datasource.password= root
spring.datasource.driver-class-name= com.mysql.cj.jdbc.Driver