@Component not working in Spring Boot

The @Component annotation is used in Spring Boot to mark a class as a Spring-managed component. If the annotation is not working in your Spring Boot application, there could be several reasons for this:

  1. Missing @ComponentScan annotation: Spring Boot uses component scanning to automatically discover and register beans in the application context. If the @ComponentScan annotation is missing or incorrectly configured in your application, Spring Boot will not be able to discover your @Component annotated classes. You can add the @ComponentScan annotation to your Spring Boot application’s main class to specify the packages to scan for components.
  2. Incorrect package structure: Spring Boot expects components to be located in specific packages. By default, Spring Boot looks for components in the package that contains the main application class and its sub-packages. Make sure that your @Component annotated class is located in a package that is being scanned by Spring Boot.
  3. Missing dependency: If your @Component annotated class has dependencies that are not available in the application context, Spring Boot will not be able to instantiate the component. Make sure that all required dependencies are properly configured and added to the application context.
  4. Duplicate component names: If you have multiple components with the same name, Spring Boot will not be able to determine which one to use. Make sure that each component has a unique name.
  5. Configuration issues: There could be configuration issues in your Spring Boot application that are preventing the @Component annotation from working correctly. Check your application’s configuration files to ensure that everything is configured correctly.

If none of the above solutions work, try providing more details about your specific issue in comment section, including error messages or stack traces, so that the problem can be diagnosed more accurately.

That’s all about @component not working in Spring Boot.

See @Component docs.

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