Idea error failed to determine a suitable driver class

The phenomenon

In the process of doing the project , It is necessary to distinguish several sets of environments , commonly SpringBoot The configuration file of the project will also be separated , as follows ：

application-db-dev.yml
application-db-local.yml
application-dev.yml
application-local.yml
application.yml

Now make a copy local As dev Environmental , And then in application.yml change spring.profiles.active=local, It should be able to start directly , But the error is reported as follows ：

Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2022-05-06 23:35:15.267 ERROR 12944 --- [           main] o.s.b.d.LoggingFailureAnalysisReporter   : 

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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

The exception indicates that the connection address of the database is not found , Guess it is application-db-local.yml The document is not effective .

solve

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