Advantages and disadvantages of different java frameworks

Advantages and disadvantages of Java framework: Spring: lightweight, modular, strong dependency injection, wide ecosystem, but high complexity and long startup delay. Spring Boot: Quickly create independent applications based on Spring, with automatic configuration, but low customization flexibility and many dependent libraries. Hibernate: ORM tool, which interacts transparently with the database, but queries are complex and performance problems are difficult to diagnose. Struts: MVC framework, the component model is powerful, but it may be bloated when the application is complex, and the customization flexibility is limited.

Advantages and Disadvantages of Different Java Frameworks

In the field of Java, there are many frameworks, each with its own advantages and disadvantages. Choosing the right framework is critical to developer and project success.

Spring

• Advantages: Lightweight, modular, powerful dependency injection, extensive ecosystem and community support.
• Disadvantages: May increase complexity, startup delay may be longer.

Spring Boot

• Advantages: Quickly and easily create stand-alone applications based on Spring, with automatic configuration and built-in server , simplifying application deployment.
• Disadvantages: Low customization flexibility and too many dependent libraries.

Hibernate

• Advantages: Object-relational mapping (ORM) tool provides transparent interaction with the database and simplifies data Persistence and retrieval.
• Disadvantages: May increase query complexity, and performance issues may be difficult to diagnose.

Struts

• Advantages: Based on the MVC framework, it provides a powerful component model and simplifies the design of the view and control layer. manage.
• Disadvantages: May become bloated as application complexity increases, and customization flexibility is limited.

Practical case

Building a RESTful API based on Spring Boot

@RestController
@RequestMapping("/api/v1/products")
public class ProductController {

    @Autowired
    private ProductService productService;

    @GetMapping
    public List<Product> getAllProducts() {
        return productService.getAllProducts();
    }

    @GetMapping("/{id}")
    public Product getProductById(@PathVariable Long id) {
        return productService.getProductById(id);
    }

    @PostMapping
    public Product createProduct(@RequestBody Product product) {
        return productService.createProduct(product);
    }

    @PutMapping("/{id}")
    public Product updateProduct(@PathVariable Long id, @RequestBody Product product) {
        return productService.updateProduct(id, product);
    }

    @DeleteMapping("/{id}")
    public void deleteProduct(@PathVariable Long id) {
        productService.deleteProduct(id);
    }
}

Data persistence based on Hibernate化

@Entity
public class Product {

    @Id
    @GeneratedValue(strategy = GenerationType.IDENTITY)
    private Long id;
    private String name;
    private double price;

    // getters and setters
}

@Repository
public interface ProductRepository extends JpaRepository<Product, Long> {
}

@Service
public class ProductService {

    @Autowired
    private ProductRepository productRepository;

    public List<Product> getAllProducts() {
        return productRepository.findAll();
    }

    public Product getProductById(Long id) {
        return productRepository.findById(id).orElse(null);
    }

    public Product createProduct(Product product) {
        return productRepository.save(product);
    }

    public Product updateProduct(Long id, Product product) {
        return productRepository.save(product);
    }

    public void deleteProduct(Long id) {
        productRepository.deleteById(id);
    }
}

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