Lecture 2 Spring Boot REST API Fundamentals with Swagger, H2, DTO & Exception Handling скачать в хорошем качестве

Lecture 2 Spring Boot REST API Fundamentals with Swagger, H2, DTO & Exception Handling

In this lecture, we build a complete Spring Boot REST API using real-world, industry-level practices. You will learn how to create REST APIs step-by-step and document them using Swagger for easy testing and collaboration. We integrate the H2 in-memory database for fast development and understand how data flows in a real project. We also cover EntityEventListener to handle entity lifecycle events automatically, implement Global Exception Handling for clean and consistent error responses, and apply Validation to secure API inputs. You will learn why DTOs are required in professional applications and how to perform DTO ↔ Entity conversion properly. All concepts are explained with practical code and line-by-line explanation, exactly how it works in real projects.