mysql-connector-java版本匹配問題：ERROR DruidDataSource - create connection SQLException（Day_45）

mysql安裝的是：8.0.23,啟動項目后發現報錯連接不上數據庫

報錯信息:

Druid-ConnectionPool-Create-150783284] ERROR DruidDataSource - create connection SQLException, url: jdbc:mysql://localhost:3306/carefree?allowMultiQueries=true&useUnicode=true&characterEncoding=UTF-8&useSSL=false, errorCode 0, state 08001
com.mysql.jdbc.exceptions.jdbc4.MySQLNonTransientConnectionException: Could not create connection to database server.

報錯原因：

低版本的mysql-connector-java和高版本的mysql不匹配

解決方案:

升級mysql-connector-java版本

<!-- MySql -->
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
                <version>5.1.49</version>
            </dependency>