Failed to configure a DataSource: ‘url‘ attribute is not specified and no embedded datasource could

Failed to configure a DataSource: ‘url’ attribute is not specified and no embedded datasource could be configured.

Reason: Failed to determine a suitable driver class

配置数据源失败：未指定“url”属性，无法配置嵌入的数据源。

原因：未能确定合适的驱动程序级别

报错解决方案

1. @SpringBootApplication(exclude = {DataSourceAutoConfiguration.class})

exclude，排除此类的AutoConfig，即禁止 SpringBoot 自动注入数据源配置

2. 配置数据源

1. 首先导入pom中的依赖

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

2. 在application.yml文件中配置连接数据库

spring:
  datasource:
    url: jdbc:mysql://localhost:3306/blogsys?useUnicode=true&characterEncoding=UTF-8&serverTimezone=UTC
    username: root
    password: qwer
    driver-class-name: com.mysql.jdbc.Driver