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I have problem with Spring Boot configuration.
I have created base Spring Boot project using https://start.spring.io/
And I have a problem, configuration works only for classes in sub catalog:
I have tried annotation @ComponentScan but it didn't help.
Do You have any idea what can I do with this?
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Spring Boot @SpringBootApplication annotation is used to mark a configuration class that declares one or more @Bean methods and also triggers auto-configuration and component scanning. It's same as declaring a class with @Configuration, @EnableAutoConfiguration and @ComponentScan annotations.
A single @SpringBootApplication annotation can be used to enable those three features, that is: @EnableAutoConfiguration : enable Spring Boot's auto-configuration mechanism. @ComponentScan : enable @Component scan on the package where the application is located (see the best practices)
We use the @SpringBootApplication annotation in our Application or Main class to enable a host of features, e.g. Java-based Spring configuration, component scanning, and in particular for enabling Spring Boot's auto-configuration feature.
How They Differ. The main difference between these annotations is that @ComponentScan scans for Spring components while @EnableAutoConfiguration is used for auto-configuring beans present in the classpath in Spring Boot applications.
The Spring Boot documentation for @SpringBootApplication states
Many Spring Boot developers always have their main class annotated with
@Configuration,@EnableAutoConfigurationand@ComponentScan. Since these annotations are so frequently used together (especially if you follow the best practices above), Spring Boot provides a convenient@SpringBootApplicationalternative.The
@SpringBootApplicationannotation is equivalent to using@Configuration,@EnableAutoConfigurationand@ComponentScanwith their default attributes: [...]
where the @ComponentScan javadoc states
If specific packages are not defined, scanning will occur from the package of the class that declares this annotation.
That is, only the types that are in the same package as your ReadingListApplication will be scanned.
If you want a custom configuration, provide your own @Configuration, @EnableAutoConfiguration, and @ComponentScan, as appropriate.
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