API First Development With Open API Spring Boot Kotlin

Declare the path and get endpoint for all posts, set the operation id, and define a 200 response with a post object (id, title, author) in open api spec.

Define and reuse a post model with the components field in an OpenAPI schema, linking component definitions to post objects and returning edits to posts.

Define a post endpoint using Open API to create a post, with a request body schema (title, description, author name) and required fields, returning a user id on 201.

Define a delete endpoint in Open API using a post id path parameter, and specify responses like 200, 204, or 500.

Learn to define and reuse path variables and parameters in OpenAPI, using reusable components and references to update schemas and endpoints from a single place.

Define a put endpoint in Open API to update post attributes by ID, allowing only title and description updates, with request body and JSON schema, and handle 200/400/404/500 responses.

Validate the request body by enforcing the required fields and throwing an error when a field is null, aligning with api first development with Open API, Spring Boot, and Kotlin.

Learn to integrate swagger UI with an OpenAPI specification in a Spring Boot Kotlin project by adding dependencies, configuring properties, and exposing contract-first endpoints.

Learn to add the OpenAPI Generator plugin, configure Gradle tasks, and generate spring boot kotlin boilerplate from OpenAPI specifications, including input specs, output dir, and conflict file setup.

Generate an interface from an open api specification using the interfaceOnly flag, turning controllers into interfaces and enabling implementation via delegation pattern.

Register the generated sources in the Gradle project by configuring the source container, then implement the post endpoint in a controller using the OpenAPI contracts and generated models.

Implement post creation and retrieval endpoints in a Spring Boot Kotlin app, generating a post id and extracting title, description, and author from request body. Validate and test with Postman.

Implement delete and put endpoint impl for posts in api first development with open api spring boot kotlin, including post retrieval and 204 no content or 404 not found responses.

Create a custom exception model and a centralized exception handler to translate not-found and other errors into standardized Open API responses with appropriate status codes, including 404 and 500.

Enable delegation pattern with OpenAPI code generators in a Spring Boot Kotlin project, implementing post interface and post delegate while delegating controller logic and adjusting build configs.

Implement a Kotlin post endpoint using a delegate pattern, map the request body to a post entity, save with a repository, and return a post id with logging.

Learn to implement get all posts and get post by id endpoints in a Spring Boot Kotlin API, mapping posts to responses and handling not found or created status.

Implement delete and update endpoints for post priority in an API-first spring boot kotlin project, with repository lookup, not-found handling, and no-content responses.