mysql版本报错

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IntelliJIdea2019.3打开原项目报mysql版本报错：

Error opening zip file or JAR manifest missing : /C:/Users/flycat/.IntelliJIdea2019.3/config/plugins/mysql-explain/lib/mysql-explain-agent-jar-with-dependencies.jar

查看MYSQL版本，原来是5.1.40，直接调整为8.0.19解决方法：
<mysql.version>8.0.19</mysql.version>

<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>${mysql.version}</version>
<scope>runtime</scope>
</dependency>依然报错，进一步分析，MYSQL8的连接串是
com.mysql.cj.jdbc.Driver，
V5的是com.mysql.jdbc.Driver
且需要在URL中加入&useSSL=false&&serverTimezone=CST

数据库连接配置也要做相应的调整：

type: com.alibaba.druid.pool.DruidDataSource
url: jdbc:mysql://localhost:3306/smartfactory?allowMultiQueries=true&useUnicode=true&characterEncoding=UTF-8&useSSL=false&&serverTimezone=CST
username: root
password:
connectionProperties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000;password=${spring.datasource.password}
driverClassName: com.mysql.cj.jdbc.Driver