MySQL database connection error

Database version 8.x and configure other versions are different:

1. The driver is connected and dependent

报错: Could not create connection to database server - java mysql connector

8.x

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.11</version>
        </dependency>

com.mysql.cj.jdbc.Driver

其他版本

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.25</version>
        </dependency>

com.mysql.jdbc.Driver

2. Database connection configuration

Error: The Server time zone value 'XXXXX' garbled

8.x Sometimes the problem area, plus a suffix:?useUnicode=true&characterEncoding=utf8

Others have character encoding issues, plus the suffix:?serverTimezone=UTC

reference:

• https://blog.csdn.net/zhouzhiwengang/article/details/81024967
• https://blog.csdn.net/Wei_NiZi/article/details/81509822