MySQL in SpringBoot，Loading class `com.mysql.jdbc.Driver‘ is deprecated

 问题描述：

Access denied for user 'root'@'localhost' (using password: NO)

Loading class `com.mysql.jdbc.Driver'. This is deprecated. The new driver class is `com.mysql.cj.jdbc.Driver'. The driver is automatically registered via the SPI and manual loading of the driver class is generally unnecessary.

解决方案：

1.降低mysql-connector-java的版本

		<dependency>
			<groupId>mysql</groupId>
			<artifactId>mysql-connector-java</artifactId>
			<scope>runtime</scope>
			<version>8.0.21</version>
		</dependency>	

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

2.升级DataSource的驱动

driverClassName: com.mysql.jdbc.Driver

更改为

driver-class-name: com.mysql.cj.jdbc.Driver