🔥Java Spring Framework | Sinhala | 2025 | Part 01 | JWT Authentication with Spring Security

Java Spring Framework | Sinhala | 2025 | Part 01 | Controllers, Services, and JWT Authentication with Spring Security | AUK WIJESINGHE Welcome to the first video in my brand-new Java Spring Boot tutorial series. This video is perfect for beginners and intermediate developers looking to build a strong foundation in Spring Boot while diving into JWT Authentication and Spring Security. Here’s what you’ll learn in this in-depth session: 01 Understanding Controllers and Services What are Controllers and Services? Learn their roles in a Spring Boot application and why they are essential for clean and maintainable code. * Key Annotations: * RestController: Understand how it works and when to use it. * GetMapping and PostMapping: Learn how to handle HTTP GET and POST requests effectively. * Service: Understand how to create reusable service classes for your business logic. * A step-by-step demonstration of creating a simple controller and service. 02 Introduction to Spring Security * Default Authentication: * Explore Spring Security’s default authentication mechanism, which generates a password for you. * Learn how to test it using Postman with Basic Auth. * Why Customize Spring Security? * Understand the limitations of the default configuration and why we need to tweak it for real-world use cases. * Learn to disable default behaviors and enable custom security settings. 03 Customizing Spring Security Configuration * Creating a SecurityConfiguration Class: * Learn how to set up a SecurityConfiguration class using the Configuration and EnableWebSecurity annotations. * Discover how to define a SecurityFilterChain bean to customize access control and security filters. * Detailed walkthrough of what each configuration does and why it’s important. 04 JWT Authentication * What is JWT? * Understand the fundamentals of JSON Web Tokens and how they work for stateless authentication. * Generating a Secret Key: Learn how to securely generate and manage a secret key for signing tokens. * Creating and Validating Tokens: * Step-by-step guide to generating JWT tokens in your application. * Learn how to validate JWT tokens to ensure secure communication between clients and your server. * Practical Example: A real-world implementation of JWT authentication with detailed explanations of every step. This video provides practical knowledge and detailed explanations so you can apply what you learn to your own projects immediately. By the end of this video, you’ll have a strong grasp of: * Building Controllers and Services in Spring Boot. * Configuring and customizing Spring Security. * Implementing JWT authentication in a Spring Boot application. Don’t forget to like, share, and subscribe to my channel for more videos in this series. Stay tuned for more content that will take your Spring Boot skills to the next level. Contact ------------------------------ WhatsApp : +94 76 217 6173 Telegram : https://t.me/auklearningcenter Facebook : https://www.facebook.com/auklearningcenter/ Instagram : https://www.instagram.com/auk_development_/ LinkedIn : https://www.linkedin.com/in/aukwijesinghe/ Twitter : https://twitter.com/aukwijesinghe #java #javaspring #javaspringboot #javatutorial #javatutorialsinhala #springtutorial #springtutorialsinhala #jwtauthentication #springbootjwtauthentication #jwtauthenticationsinhala #aukwijesinghe #auklearningcenter