How to solve the problem of com.mysql.cj.jdbc.Driver becoming popular in yml file in Springboot

The reason why com.mysql.cj.jdbc.Driver became popular in yml files

I built a framework a few days ago, and a strange problem occurred. When configuring the mysql file, com.mysql.cj .jdbc.Driver has been popular. I thought the version was too low, so I upgraded to a higher version, but it was still popular. Finally, I checked online for a long time. The online method said that the version was too low, but I still The dependency package I used before was not working:

<!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java -->
<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>8.0.15</version>
</dependency>

Finally I just removed the version number,

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

driver-class-name: com.mysql.cj.jdbc.Driver code exploded Red's solution

When building and running the springboot project, an error will be reported when adding the database driver.

Before that, you need to add mysql dependency in pom.xml. In the process of seeking solutions to the problem many times, I found a key statement, which is:

I added the version number in the mysql dependency, and this problem is probably caused by inconsistent version numbers, which resulted in this red topic:

At this point, the solution to this problem is obvious.

1. Either comment out the mysql dependency in pom.xml

        <!-- 数据库Mysql -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <!--<version>5.7.17</version>-->
        </dependency>

logging:
  path: ./log/
spring:
  datasource:
    url: jdbc:mysql://localhost:3306/xzs?useUnicode=true&characterEncoding=utf-8&allowMultiQueries=true&useSSL=false&serverTimezone=GMT%2b8
    username: root
    password: root
    driver-class-name: com.mysql.cj.jdbc.Driver

2. Or the current MySQL version on the computer is too low, reinstall a MySQL version that is more suitable for the development environment.

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