作者:手机用户2502901613 | 来源:互联网 | 2023-08-07 18:35
mysql-connector-java.jar升级到8版本以后,驱动和连接地址的书写发生了一些改动,不然项目启动会进行报错1、驱动类发生改变由com.
mysql-connector-java.jar升级到8版本以后,驱动和连接地址的书写发生了一些改动,不然项目启动会进行报错
1、驱动类发生改变
由 com.mysql.jdbc.Driver 改为 com.mysql.cj.jdbc.Driver
以前的com.mysql.jdbc.Driver也还能用,不过会提交你使用新的驱动类,提示如下:
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.
2、数据库连接地址发生改动
spring.datasource.url=jdbc:mysql://localhost:3306/glxy
数据库连接地址上必须要指定时区(serverTimezOne=GMT%2B8),不然会报如下错误:
java.sql.SQLException: The server time zone value 'йʱ' 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.
另外,在数据库连接地址上要需要额外指定字符编码(characterEncoding=utf8),如果不指定 like查询可能不会生效,明明有数据却无法查出
完整地址写法如下:
spring.datasource.url=jdbc:mysql://localhost:3306/glxy?serverTimezOne=GMT%2B8&characterEncoding=utf8&useSSL=false&useUnicode=true