spring-boot Package scanning @ComponentScan
Example
You can use @ComponentScan in order to configure more complex package scanning. There is also @ComponentScans that act as a container annotation that aggregates several @ComponentScan annotations.
Basic code examples
@ComponentScan
public class DemoAutoConfiguration {
}
@ComponentScans({@ComponentScan("com.example1"), @ComponentScan("com.example2")})
public class DemoAutoConfiguration {
}
Stating @ComponentScan with no configuration acts like @SpringBootApplication and scans all packages under the class annotated with this annotation.
In this example I will state some of the useful attributes of @ComponentScan:
- basePackages - can be used to state specific packages to scan.
- useDefaultFilters - by setting this attribute to false (defaults true) you can make sure spring does not scan
@Component,@Repository,@Service, or@Controllerautomatically. - includeFilters - can be used to include specific spring annotations / regex patterns to include in package scanning.
- excludeFilters - can be used to exclude specific spring annotations / regex patterns to include in package scanning.
There are many more attributes but those are the most commonly used in order to customize package scanning.
