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Building REST APIs with Java Spring Boot

Administrator admin API Java Intermediate Jan 09, 2026 12:41 AM 3 views

Spring Boot Overview

Spring Boot makes it easy to create stand-alone, production-grade Spring-based applications.

Controller Example

@RestController
@RequestMapping("/api/users")
public class UserController {
    
    @Autowired
    private UserRepository userRepository;
    
    @GetMapping
    public List<User> getUsers() {
        return userRepository.findAll();
    }
    
    @PostMapping
    public ResponseEntity<User> createUser(@RequestBody User user) {
        User saved = userRepository.save(user);
        return ResponseEntity.status(HttpStatus.CREATED).body(saved);
    }
}

Best Practices

  • Use Spring Data JPA for database
  • Implement proper exception handling
  • Use DTOs for request/response
  • Enable CORS properly
  • Use dependency injection

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