Integrating Swagger with Spring Boot 3

Swagger is a powerful tool for documenting and testing RESTful APIs, and it can be easily integrated with Spring Boot 3 using the OpenAPI specification. To add Swagger to a Spring Boot project, the springdoc-openapi-starter-webmvc-ui dependency needs to be included in the pom.xml file. Once added, the Swagger UI can be accessed at http://localhost:8080/swagger-ui.html when the application is running. If Spring Security is being used, the securityFilterChain needs to be modified to make the Swagger UI work. This can be done by adding permitAll requests for the Swagger UI endpoints. A class of configurations can be created to modify other Swagger settings, such as the title, version, and description of the API. Swagger annotations can be used to describe API endpoints, such as @Operation and @ApiResponse. These annotations can be used to document the success and error responses of an API endpoint. A Spring Boot 3 controller can be created to manage users, and Swagger annotations can be used to document the API endpoints. The controller can include methods to get all users, get a user by ID, delete a user by ID, and create a new user. Once the Spring Boot application is running, the Swagger UI can be accessed at http://localhost:8080/swagger-ui.html, where the API endpoints can be tested directly from the browser with a clean UI. Integrating Swagger with Spring Boot 3 is straightforward with the springdoc-openapi library, and using annotations like @Operation and @ApiResponse can create well-documented APIs that are easy to understand and use. The Swagger UI provides a clean and user-friendly interface for testing API endpoints, and it can be used to document and test RESTful APIs. Overall, Swagger is a powerful tool for documenting and testing RESTful APIs, and it can be easily integrated with Spring Boot 3 using the OpenAPI specification.