控制台错误日志:

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).

1.使用了数据库,但没有在application.properties里配置mysql的配置

重新启动即可

2.没有用到数据库但是导入了相关依赖,只需在pom.xml里将相关的依赖注释掉即可

重新启动即可

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