implement the shipping REST APIs with spring boot + sping mvc + jpa/batis + mysql + jwt

Sure, here's an outline of how you can implement the shipping REST APIs using Spring Boot, Spring MVC, JPA/Batis, MySQL, and JWT:

1. Set up a Spring Boot project with the necessary dependencies for Spring MVC, JPA/Batis, MySQL, and JWT. You can use Spring Initializr to generate the project structure and add the dependencies.

2. Define the domain model for the shipping application, including entities such as Order, Product, Customer, and ShippingAddress. Map the entities to database tables using JPA annotations or MyBatis mapper XML files.

3. Implement the repository layer to perform CRUD operations on the database using JPA or MyBatis. You can use Spring Data JPA or MyBatis-Spring to simplify the implementation.

4. Define the REST API endpoints for the shipping application using Spring MVC annotations. Use JWT for authentication and authorization of the API endpoints.

5. Implement the service layer to perform business logic operations such as calculating shipping costs, validating orders, and processing payments. Use dependency injection to inject the repository and other services into the service layer.

6. Write unit tests to ensure that the application logic is working correctly. You can use JUnit and Mockito to write the tests.

7. Deploy the application to a server and test the API endpoints using a tool such as Postman.

Here's some example code to get you started:

@RestController
@RequestMapping("/api/orders")
public class OrderController {
    
    @Autowired
    private OrderService orderService;
    
    @PostMapping("/")
    public ResponseEntity<Order> createOrder(@RequestBody Order order) {
        Order createdOrder = orderService.createOrder(order);
        return ResponseEntity.ok(createdOrder);
    }
    
    @GetMapping("/{id}")
    public ResponseEntity<Order> getOrder(@PathVariable("id") Long orderId) {
        Order order = orderService.getOrder(orderId);
        return ResponseEntity.ok(order);
    }
    
    // Other API endpoints for updating and deleting orders
}

@Service
public class OrderService {
    
    @Autowired
    private OrderRepository orderRepository;
    
    public Order createOrder(Order order) {
        // Calculate shipping costs and validate the order
        order.setShippingCosts(10.0);
        order.setTotalPrice(order.getProducts().stream()
            .mapToDouble(Product::getPrice)
            .sum() + order.getShippingCosts());
        return orderRepository.save(order);
    }
    
    public Order getOrder(Long orderId) {
        return orderRepository.findById(orderId)
            .orElseThrow(() -> new NotFoundException("Order not found"));
    }
    
    // Other service methods for updating and deleting orders
}

@Repository
public interface OrderRepository extends JpaRepository<Order, Long> {
    
}

This code defines a REST API endpoint for creating orders and getting orders by ID. The order creation logic is implemented in the OrderService class, which calculates shipping costs and saves the order to the database using the OrderRepository interface. JWT authentication and authorization can be added to the API endpoints using Spring Security.