Welcome to the Spring Boot REST API tutorial! This guide will walk you through building a simple RESTful web service using Spring Boot. Let's get started! 📚
🧰 Prerequisites
- Java Development Kit (JDK 8+)
- Maven or Gradle
- IDE (e.g., IntelliJ, Eclipse)
- Basic understanding of Java and Spring Framework
🛠️ Step-by-Step Guide
1. Create a Spring Boot Project
Use Spring Initializr to generate a project structure. Select the following dependencies:
- Spring Web
- Spring Data JPA (optional)
- Spring Boot DevTools (optional)
📌 Tip: If you're new to Spring Boot, check out our Spring Boot Quick Start tutorial for a basic setup.
2. Define a REST Controller
Create a class annotated with @RestController
and @RequestMapping
:
@RestController
@RequestMapping("/api")
public class HelloController {
@GetMapping("/hello")
public String sayHello() {
return "Hello, World!";
}
}
3. Run the Application
Use @SpringBootApplication
to launch the app:
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}
4. Test the Endpoint
Open your browser and navigate to:
http://localhost:8080/api/hello
✅ You should see the response: Hello, World!
📌 Additional Resources
📷 Visuals
Let me know if you'd like to dive deeper into advanced topics like authentication, databases, or Swagger integration! 🌐🔧