If you want an embedded database (H2, hsql or Derby), please put it on the classpath

I wrote ,springcloud, Write fuse , The database link is used git, An error is reported when running the microservice , As a result, my micro service didn't run

Problem related code Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.

2021-12-16 16:39:44.383 ERROR 19108 --- [ restartedMain] o.s.b.d.LoggingFailureAnalysisReporter :

APPLICATION FAILED TO START

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).

Disconnected from the target VM, address: '127.0.0.1:63536', transport: 'socket'

Process finished with exit code 0

I use feign The client calls , Tried all kinds of methods ,pom.xml Some of the dependencies on linked databases have also been deleted , It is also added in the main category @SpringBootApplication(exclude= {DataSourceAutoConfiguration.class}), But it's still useless. It's still wrong

How to solve this problem