Failed to configure a DataSource:‘url’attribute is not specified and no embedded的解决方法

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

问题详情如下：

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2020-06-03 15:48:45.482 ERROR 3056 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

***************************
APPLICATION FAILED TO START
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Description:

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


Action:

Consider the following:
	If you want an embedded database (H2, HSQL or Derby), please put it on the classpath.
	If you have database settings to be loaded from a particular profile you may need to activate it (no profiles are currently active).


Process finished with exit code 1

错误说明：未能配置数据源：未指定“url”属性，无法配置嵌入的数据源。
解决方法：
在 pom.xml 配置文件中，加入JDBC 依赖包，在启动配置文件时 ，Spring Boot 的自动装配机制就会去配置文件中找，相关的数据库的连接配置信息，如果找不到则抛出异常信息

 <dependency>
         <groupId>org.springframework</groupId>
         <artifactId>spring-jdbc</artifactId>
</dependency>

修改配置后，测试是否能正常启动，如下图所示：