Spring Boot + PostgreSQL : La Connexion à la Base de Données de A à Z

Learn how to build a contact management system with Spring Boot Java. This practical guide explains how to create an API. This video details how to set up a robust contact management system using Java. We explore the complete structure, from defining the Contact entity to configuring the controller. If you're looking to structure your backend projects effectively, this tutorial shows you how to organize your code with a clean and modular architecture. The tutorial focuses on essential components such as the repository, service, and controller for managing your data. You'll see how to use the Autowired annotation for dependency injection, a key concept in the Spring Framework. By following these steps, you'll be able to create a functional REST API and better understand the bean lifecycle in your Spring Boot Java applications. YOUTUBE CHAPTERS — Spring Boot + PostgreSQL (duration ~1h39) Paste directly into the video description. 00:00 Introduction 01:00 Project Overview 01:30 Demo of the final application (contact book) 05:45 Theory: What is a Bean? 08:00 Dependency & Dependency Injection (IoC) 11:00 Spring Annotations 13:00 @Autowired 14:00 @Primary 16:00 @Qualifier 17:00 API Architecture (Controller / Service / Repository) 19:00 Let's Get Practical 19:30 Installing PostgreSQL 21:45 Creating the Database 23:00 Creating the Spring Boot Project (Spring Initializr) 25:00 Choosing Dependencies & pom.xml 27:00 Configuring the Connection (application.properties) 35:00 Creating the Contact Entity (@Entity) 40:00 JPA Annotations for the Entity (@Id, @Column, Creation Date) 47:00 The Repository (Spring Data JPA) 51:00 The Service (Business Logic) CRUD) 1:06:00 The REST Controller (endpoints) 1:16:00 API Testing (REST client) 1:28:00 Finalizing Endpoints (PUT/DELETE with ResponseEntity) 1:30:00 Prompt AI to Generate the React Front-End 1:33:00 The React Front-End (Setup) 1:37:00 Final Demo (Front-End + Database) Subscribe for our weekly Java development analyses and let us know in the comments which Spring Framework topic you'd like to explore next. Contact me: kelenix.com Email: [email protected] Website: https://lionel-dev.site/fr 📚 Access my complete training courses: 🔹Create and Manage Your Databases with SQL Learn to master SQL from A to Z and manipulate databases like a pro. 👉 https://ebookdev.mychariow.shop/exper... 🔹Complete HTML Training – From Beginner to Independent Learn to create modern and structured web pages. 👉 https://ebookdev.mychariow.shop/forma... 🔹Complete SQL Training: Become a Pro in Database Programming Go from beginner to advanced in SQL. 👉 https://ebookdev.mychariow.shop/prd_y... =========================================================== 🚀 Launch your website or web project (hosting recommended) Want to get your website or application online quickly, with good performance and robust security? 👉 Hostinger (the platform I personally use) 🔹 Fast 🔹 Secure 🔹 Suitable for Node.js / MySQL projects 🎁 Exclusive discount: https://www.urlr.me/yHzckF Promo code: Z4DLIONELXFR ============================================================= 📢 Support the channel 🙏 👍 Like the video 🔔 Subscribe to the channel 📤 Share with a developer friend