Could not create connection to database server. 数据库版本和mysql 驱动jar 版本不匹配导致报错

错误：

Exception in thread "main" org.apache.ibatis.exceptions.PersistenceException:
### Error querying database.  Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server.
### The error may exist in cn/action/dao/UserDao.xml
### The error may involve cn.action.dao.UserDao.findList
### The error occurred while executing a query
### Cause: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server.
    at org.apache.ibatis.exceptions.ExceptionFactory.wrapException(ExceptionFactory.java:30)
    at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:150)
    at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:141)
    at org.apache.ibatis.session.defaults.DefaultSqlSession.selectList(DefaultSqlSession.java:136)
    at cn.action.test01.TestSelectList.main(TestSelectList.java:29)
Caused by: com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server.
    at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
    at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
    at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)

 原因：数据库版本8以上，引入jar 是5版本的 导致报错

1.引入8以上驱动依赖

  mysql
  mysql-connector-java
  8.0.26

Maven Central Repository Searchhttps://search.maven.org/artifact/mysql/mysql-connector-java/8.0.26/jar2.然后maven clean 一下项目 ，重写编辑yml文件

spring:
  datasource:
    driver-class-name: com.mysql.cj.jdbc.Driver
    username: root
    password: root
    url: jdbc:mysql://localhost:3306/nsbdcms?useUnicode=true&characterEncoding=UTF-8&useJDBCCompliantTimezoneShift=true&useLegacyDatetimeCode=false&serverTimezone=GMT%2B8

3.由于版本时区不同，要在数据库后加上“?serverTimezone=UTC"