Spring Boot POST API: DTO Mapping & Validation (Enterprise Way | Hindi)

Описание: This tutorial shows how to build a clean Spring Boot POST API using DTOs, validation, and entity mapping, following a typical enterprise architecture approach.

Chapters
00:00 API Architecture and Project Setup
04:32 Model Class Creation
13:23 Implementing the POST API Endpoint
15:15 Creating the Request DTO
18:13 Creating the Service Layer
20:56 Adding Validation with Jakarta Validation
26:05 Mapping DTO to Entity
29:54 Persisting Data with Spring Data JPA
31:41 Testing the POST API
34:02 Creating Global Exception Handler
39:23 Recap: Enterprise API Pattern for POST API

This video is useful for developers learning Spring Boot REST APIs, DTO design, validation with Jakarta Validation, and clean enterprise API architecture.

In real-world Spring Boot enterprise applications, POST APIs are rarely implemented directly using entities.
Instead, we use DTOs, validation, and mapping layers to keep our API secure, maintainable, and production-ready.

In this video, we implement a clean POST API in Spring Boot using:

• DTOs for request handling
• Bean Validation for input validation
• Manual mapping from DTO → Entity
• Clean persistence using Spring Data JPA

This approach is commonly used in enterprise backend systems to avoid exposing entities directly and to maintain clear API contracts.

Topics covered

• Why entities should not be used directly in APIs
• Designing request DTOs
• Adding validation using Jakarta Bean Validation
• Mapping DTOs to entities
• Implementing a clean POST API in Spring Boot

Tech stack

Spring Boot
Spring Data JPA
Jakarta Validation
REST APIs

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