Sure! Here are some commonly used Spring Boot annotations for beginners:
@SpringBootApplication: This annotation is used to mark the main class of a Spring Boot application. It combines three annotations: @Configuration, @EnableAutoConfiguration, and @ComponentScan.
@RestController: This annotation is used to mark a class as a RESTful controller. It is used in combination with @RequestMapping to handle incoming HTTP requests and return appropriate responses.
@RequestMapping: This annotation is used to map a method or a class to a specific URL endpoint. It specifies the HTTP method, path, and other parameters to handle requests.
@GetMapping, @PostMapping, @PutMapping, @DeleteMapping: These annotations are shortcuts for @RequestMapping with specific HTTP methods. They are used to handle GET, POST, PUT, and DELETE requests, respectively.
@PathVariable: This annotation is used to bind a method parameter to a path variable in the URL. It extracts the value from the URL and maps it to the parameter.
@RequestParam: This annotation is used to bind a method parameter to a query parameter in the URL. It extracts the value from the query string and maps it to the parameter.
@RequestBody: This annotation is used to bind the request body to a method parameter. It is used when the request payload is in the form of JSON or XML.
@Autowired: This annotation is used for automatic dependency injection. It injects dependencies into a class without the need for explicit configuration.
@Service: This annotation is used to mark a class as a service component. It is typically used in the service layer to provide business logic.
@Repository: This annotation is used to mark a class as a repository component. It is typically used in the data access layer to interact with the database.
These are just a few of the many annotations available in Spring Boot. It's important to explore the Spring Boot documentation and understand the purpose and usage of each annotation in different scenarios.