idea启动spring boot项目报错-:'url'属性未指定，无法配置内嵌的数据源。

错误描述：

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

检查url配置发现数据源配置没有问题。继续看报错信息。

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).

发现报当前没有激活的配置文件。
检查项目发现application.properties文件没有被激活。

重新构建项目

重启成功。