基于Springboot养老院健康管理系统的设计与实现(源码+LW+讲解和调试)

 package com.example.productapi;

    
  
    
 import org.springframework.boot.SpringApplication;
    
 import org.springframework.boot.autoconfigure.SpringBootApplication;
    
  
    
 @SpringBootApplication
    
 public class ProductApiApplication {
    
  
    
     public static void main(String[] args) {
    
     SpringApplication.run(ProductApiApplication.class, args);
    
     }
    
 }
    
  
    
 package com.example.productapi.model;
    
  
    
 import jakarta.persistence.Entity;
    
 import jakarta.persistence.GeneratedValue;
    
 import jakarta.persistence.GenerationType;
    
 import jakarta.persistence.Id;
    
  
    
 @Entity
    
 public class Product {
    
  
    
     @Id
    
     @GeneratedValue(strategy = GenerationType.IDENTITY)
    
     private Long id;
    
     private String name;
    
     private double price;
    
     private int quantity;
    
  
    
     // Constructors
    
     public Product() {}
    
  
    
     public Product(String name, double price, int quantity) {
    
     this.name = name;
    
     this.price = price;
    
     this.quantity = quantity;
    
     }
    
  
    
     // Getters and Setters
    
     public Long getId() {
    
     return id;
    
     }
    
  
    
     public void setId(Long id) {
    
     this.id = id;
    
     }
    
  
    
     public String getName() {
    
     return name;
    
     }
    
  
    
     public void setName(String name) {
    
     this.name = name;
    
     }
    
  
    
     public double getPrice() {
    
     return price;
    
     }
    
  
    
     public void setPrice(double price) {
    
     this.price = price;
    
     }
    
  
    
     public int getQuantity() {
    
     return quantity;
    
     }
    
  
    
     public void setQuantity(int quantity) {
    
     this.quantity = quantity;
    
     }
    
 }
    
  
    
 package com.example.productapi.repository;
    
  
    
 import com.example.productapi.model.Product;
    
 import org.springframework.data.jpa.repository.JpaRepository;
    
  
    
 public interface ProductRepository extends JpaRepository<Product, Long> {
    
     // 这里不需要额外的方法，默认的 JpaRepository 提供了基本的 CRUD 操作
    
 }
    
  
    
 package com.example.productapi.controller;
    
  
    
 import com.example.productapi.model.Product;
    
 import com.example.productapi.repository.ProductRepository;
    
 import org.springframework.beans.factory.annotation.Autowired;
    
 import org.springframework.http.HttpStatus;
    
 import org.springframework.http.ResponseEntity;
    
 import org.springframework.web.bind.annotation.*;
    
  
    
 import java.util.List;
    
 import java.util.Optional;
    
  
    
 @RestController
    
 @RequestMapping("/api/products")
    
 public class ProductController {
    
  
    
     @Autowired
    
     private ProductRepository productRepository;
    
  
    
     // 获取所有产品
    
     @GetMapping
    
     public List<Product> getAllProducts() {
    
     return productRepository.findAll();
    
     }
    
  
    
     // 获取特定产品
    
     @GetMapping("/{id}")
    
     public ResponseEntity<Product> getProductById(@PathVariable Long id) {
    
     Optional<Product> product = productRepository.findById(id);
    
     return product.map(ResponseEntity::ok).orElseGet(() -> ResponseEntity.notFound().build());
    
     }
    
  
    
     // 创建新产品
    
     @PostMapping
    
     public Product createProduct(@RequestBody Product product) {
    
     return productRepository.save(product);
    
     }
    
  
    
     // 更新产品信息
    
     @PutMapping("/{id}")
    
     public ResponseEntity<Product> updateProduct(@PathVariable Long id, @RequestBody Product productDetails) {
    
     Optional<Product> productOptional = productRepository.findById(id);
    
  
    
     if (productOptional.isPresent()) {
    
         Product product = productOptional.get();
    
         product.setName(productDetails.getName());
    
         product.setPrice(productDetails.getPrice());
    
         product.setQuantity(productDetails.getQuantity());
    
         return ResponseEntity.ok(productRepository.save(product));
    
     } else {
    
         return ResponseEntity.notFound().build();
    
     }
    
     }
    
  
    
  
    
     // 删除产品
    
     @DeleteMapping("/{id}")
    
     public ResponseEntity<Void> deleteProduct(@PathVariable Long id) {
    
     if (productRepository.existsById(id)) {
    
         productRepository.deleteById(id);
    
         return ResponseEntity.noContent().build();
    
     } else {
    
         return ResponseEntity.notFound().build();
    
     }
    
     }
    
 }