java mysql常见问题
1.com.alibaba.druid.pool.DruidDataSource : create connection error, url: jdbc:mysql://
1)未开启远程操作权限
win+R->cmd进入登录自己的mysql: 输入命令:mysql -u root -p ****(输入自己的密码) 输入远程命令:GRANT ALL PRIVILEGES ON *.* TO 'myuser'@'%'IDENTIFIED BY 'mypassword' WITH GRANT OPTION;(输入自己的用户名和密码) 刷新:flush privileges;
2)需要在项目的application.yml配置中加上:(遇到The server time zone value '�й���ʱ��' is unrecogni同理)
&useSSL=false&serverTimezone=UTC
3)
2.Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'.
整合spring boot项目过程中出现的,用了最新的mysql 连接驱动
application-dev.properties
spring.datasource.url=jdbc:mysql://localhost:3306/test?serverTimezone=GMT%2B8 spring.datasource.username=root spring.datasource.password=root spring.datasource.driver-class-name=com.mysql.jdbc.Driver
需要将 com.mysql.jdbc.Driver 改为 com.mysql.cj.jdbc.Driver
spring.datasource.url=jdbc:mysql://localhost:3306/test?serverTimezone=GMT%2B8 spring.datasource.username=root spring.datasource.password=root spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver