feat: 新增获取所有商品接口（包括下架）用于商品管理

src/main/java/com/example/building/controller/ProductController.java

@@ -79,6 +79,18 @@ public class ProductController {
         return Result.success(productService.getProducts(categoryId, keyword, page, pageSize));
     }
 
+    /**
+     * 获取所有商品（包括下架的，用于管理）
+     */
+    @GetMapping("/all")
+    public Result<Page<Product>> getAllProducts(
+            @RequestParam(required = false) String categoryId,
+            @RequestParam(required = false) String keyword,
+            @RequestParam(defaultValue = "1") Integer page,
+            @RequestParam(defaultValue = "20") Integer pageSize) {
+        return Result.success(productService.getAllProducts(categoryId, keyword, page, pageSize));
+    }
+
     /**
      * 获取商品详情
      */

src/main/java/com/example/building/dto/CreateOrderRequest.java

@@ -70,5 +70,20 @@ public class CreateOrderRequest {
          * 销售单价(用户可自定义)
          */
         private BigDecimal price;
+
+        /**
+         * 长度(cm)
+         */
+        private BigDecimal length;
+
+        /**
+         * 宽度(cm)
+         */
+        private BigDecimal width;
+
+        /**
+         * 面积(m²)
+         */
+        private BigDecimal area;
     }
 }

src/main/java/com/example/building/entity/OrderItem.java

@@ -86,6 +86,21 @@ public class OrderItem {
      */
     private BigDecimal subtotal;
 
+    /**
+     * 长度(cm)
+     */
+    private BigDecimal length;
+
+    /**
+     * 宽度(cm)
+     */
+    private BigDecimal width;
+
+    /**
+     * 面积(m²)
+     */
+    private BigDecimal area;
+
     @TableField(fill = FieldFill.INSERT)
     private LocalDateTime createdAt;
 }

src/main/java/com/example/building/service/ProductService.java

@@ -37,6 +37,11 @@ public interface ProductService {
      */
     Page<Product> getProducts(String categoryId, String keyword, Integer page, Integer pageSize);
 
+    /**
+     * 获取所有商品（包括下架的）
+     */
+    Page<Product> getAllProducts(String categoryId, String keyword, Integer page, Integer pageSize);
+
     /**
      * 获取商品详情
      */

src/main/java/com/example/building/service/impl/OrderServiceImpl.java

@@ -113,6 +113,9 @@ public class OrderServiceImpl implements OrderService {
             item.setDescription(product.getDescription());
             item.setPrice(price);
             item.setQuantity(itemDTO.getQuantity());
+            item.setLength(itemDTO.getLength());
+            item.setWidth(itemDTO.getWidth());
+            item.setArea(itemDTO.getArea());
             item.setSubtotal(subtotal);
             orderItems.add(item);
 
@@ -364,6 +367,9 @@ public class OrderServiceImpl implements OrderService {
             item.setDescription(product.getDescription());
             item.setPrice(price);
             item.setQuantity(itemDTO.getQuantity());
+            item.setLength(itemDTO.getLength());
+            item.setWidth(itemDTO.getWidth());
+            item.setArea(itemDTO.getArea());
             item.setSubtotal(subtotal);
             orderItems.add(item);
             orderItemMapper.insert(item);

src/main/java/com/example/building/service/impl/ProductServiceImpl.java

@@ -99,6 +99,20 @@ public class ProductServiceImpl implements ProductService {
         return productMapper.selectPage(pageParam, wrapper);
     }
 
+    @Override
+    public Page<Product> getAllProducts(String categoryId, String keyword, Integer page, Integer pageSize) {
+        Page<Product> pageParam = new Page<>(page, pageSize);
+        LambdaQueryWrapper<Product> wrapper = new LambdaQueryWrapper<>();
+        if (StringUtils.hasText(categoryId)) {
+            wrapper.eq(Product::getCategoryId, categoryId);
+        }
+        if (StringUtils.hasText(keyword)) {
+            wrapper.like(Product::getName, keyword);
+        }
+        wrapper.orderByDesc(Product::getCreatedAt);
+        return productMapper.selectPage(pageParam, wrapper);
+    }
+
     /**
      * 获取商品详情
      */