15. Configuration classes
Spring Boot favors Java-based configuration. Although it is possible to call
SpringApplication.run() with an XML source, we generally recommend that your primary source is a
@Configuration class. Usually the class that defines the
main method is also a good candidate as the primary
Many Spring configuration examples have been published on the Internet that use XML configuration. Always try to use the equivalent Java-based configuration if possible. Searching for
Enable* annotations can be a good starting point.
You don’t need to put all your
@Configuration into a single class. The
@Import annotation can be used to import additional configuration classes. Alternatively, you can use
@ComponentScan to automatically pick up all Spring components, including
If you absolutely must use XML based configuration, we recommend that you still start with a
@Configuration class. You can then use an additional
@ImportResource annotation to load XML configuration files.