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Yes, one can identify if a property value has been overwritten in Spring Boot by following these steps:

1. Enable debug logging in the application.properties file:

logging.level.org.springframework.boot.autoconfigure=DEBUG

1. Start the application and look for the property values in the log output.

2. If a value is overwritten, it will appear in the log output with the prefix "Overriding property".

3. Additionally, one can use the Spring Boot Actuator endpoint /configprops to see all the properties and their sources. If a property has been overwritten, its source will be different from the default source.

http://localhost:8080/actuator/configprops