com.mysql.cj.jdbc.exceptions.SQLError.createSQLException

改一下mysql驱动的版本号

<version>5.1.46</version>

        <dependency>
            	<groupId>mysql</groupId>
            	<artifactId>mysql-connector-java</artifactId>
		<scope>runtime</scope>
            	<version>5.1.46</version>
        </dependency>