🔄Update: 创建 product 相关模块

src/main/java/cn/hezhaohui/pc/controller/ProductController.java

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+package cn.hezhaohui.pc.controller;
+
+import cn.hezhaohui.pc.entity.Product;
+import cn.hezhaohui.pc.service.ProductService;
+import io.swagger.v3.oas.annotations.Operation;
+import io.swagger.v3.oas.annotations.tags.Tag;
+import jakarta.annotation.Resource;
+import org.springframework.web.bind.annotation.*;
+
+import java.util.List;
+
+@RestController
+@RequestMapping("/product")
+@Tag(name = "商品")
+public class ProductController {
+
+    @Resource
+    private ProductService productService;
+
+    @GetMapping
+    @Operation(summary = "列出所有商品")
+    public List<Product> listAll() {
+        return productService.listAll();
+    }
+
+    @GetMapping("/{id}")
+    @Operation(summary = "通过id查找商品")
+    public Product findById(@PathVariable Long id) {
+        return productService.getById(id);
+    }
+
+    @PostMapping
+    @Operation(summary = "添加商品")
+    public void add(@RequestBody Product product) {
+        productService.saveProduct(product);
+    }
+
+    @PutMapping
+    @Operation(summary = "更新商品")
+    public void update(@RequestBody Product product) {
+        productService.updateProduct(product);
+    }
+
+    @DeleteMapping("/{id}")
+    @Operation(summary = "删除商品")
+    public void delete(@PathVariable Long id) {
+        productService.deleteProduct(id);
+    }
+}

src/main/java/cn/hezhaohui/pc/entity/Product.java

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+package cn.hezhaohui.pc.entity;
+
+import com.baomidou.mybatisplus.annotation.IdType;
+import com.baomidou.mybatisplus.annotation.TableId;
+import com.baomidou.mybatisplus.annotation.TableName;
+import lombok.Data;
+
+import java.time.LocalDateTime;
+
+@Data
+@TableName("products")
+public class Product {
+    @TableId(type = IdType.AUTO)
+    private Long id;
+    private String name;
+    private String description;
+    private Double price;
+    private LocalDateTime createdAt;
+    private LocalDateTime updatedAt;
+}

src/main/java/cn/hezhaohui/pc/mapper/ProductMapper.java

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+package cn.hezhaohui.pc.mapper;
+
+import cn.hezhaohui.pc.entity.Product;
+import com.baomidou.mybatisplus.core.mapper.BaseMapper;
+import org.apache.ibatis.annotations.Mapper;
+
+@Mapper
+public interface ProductMapper extends BaseMapper<Product> {
+}

src/main/java/cn/hezhaohui/pc/service/ProductService.java

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+package cn.hezhaohui.pc.service;
+
+
+
+import cn.hezhaohui.pc.entity.Product;
+
+import java.util.List;
+
+public interface ProductService {
+    List<Product> listAll();
+    Product getById(Long id);
+    void saveProduct(Product Product);
+    void updateProduct(Product Product);
+    void deleteProduct(Long id);
+}

src/main/java/cn/hezhaohui/pc/service/impl/ProductServiceImpl.java

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+package cn.hezhaohui.pc.service.impl;
+
+import cn.hezhaohui.pc.entity.Product;
+import cn.hezhaohui.pc.mapper.ProductMapper;
+import cn.hezhaohui.pc.service.ProductService;
+import jakarta.annotation.Resource;
+import org.springframework.stereotype.Service;
+
+import java.time.LocalDateTime;
+import java.util.List;
+
+@Service
+public class ProductServiceImpl implements ProductService {
+
+    @Resource
+    private ProductMapper productMapper;
+
+    @Override
+    public List<Product> listAll() {
+        return productMapper.selectList(null);
+    }
+
+    @Override
+    public Product getById(Long id) {
+        return productMapper.selectById(id);
+    }
+
+    @Override
+    public void saveProduct(Product Product) {
+        LocalDateTime now = LocalDateTime.now();
+        Product.setCreatedAt(now);
+        Product.setUpdatedAt(now);
+        productMapper.insert(Product);
+    }
+
+    @Override
+    public void updateProduct(Product Product) {
+        LocalDateTime now = LocalDateTime.now();
+        Product.setUpdatedAt(now);
+        productMapper.updateById(Product);
+    }
+
+    @Override
+    public void deleteProduct(Long id) {
+        productMapper.deleteById(id);
+    }
+}