If you don’t want login page (from Spring-Security) remove the following dependency from your pom.xml and do maven update to refresh the dependencies on the class path.
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
Or if you want to use the Spring-Security then on console it will display the default password like below :
Using default security password: ce6c3d39-8f20-4a41-8e01-803166bb99b6
the default username will be user