商品模型-商品创建实现

src/main/java/com/cxyxiaomo/flashsale/controller/ItemController.java

@@ -0,0 +1,53 @@
+package com.cxyxiaomo.flashsale.controller;
+
+import com.cxyxiaomo.flashsale.controller.viewobject.ItemVO;
+import com.cxyxiaomo.flashsale.error.BusinessException;
+import com.cxyxiaomo.flashsale.response.CommonReturnType;
+import com.cxyxiaomo.flashsale.service.ItemService;
+import com.cxyxiaomo.flashsale.service.model.ItemModel;
+import org.springframework.beans.BeanUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.*;
+
+import java.math.BigDecimal;
+
+@Controller("/item")
+@RequestMapping("/item")
+@CrossOrigin(allowedHeaders = "*", allowCredentials = "true")
+public class ItemController extends BaseController {
+
+    @Autowired
+    private ItemService itemService;
+
+    // 创建商品的Controller
+    @RequestMapping(value = "/create", method = {RequestMethod.POST}, consumes = {CONTENT_TYPE_FORMED})
+    @ResponseBody
+    public CommonReturnType createItem(@RequestParam(name = "title") String title,
+                                       @RequestParam(name = "description") String description,
+                                       @RequestParam(name = "price") BigDecimal price,
+                                       @RequestParam(name = "stock") Integer stock,
+                                       @RequestParam(name = "imgUrl") String imgUrl) throws BusinessException {
+        // 封装Service请求用来创建商品
+        ItemModel itemModel = new ItemModel();
+        itemModel.setTitle(title);
+        itemModel.setDescription(description);
+        itemModel.setPrice(price);
+        itemModel.setStock(stock);
+        itemModel.setImgUrl(imgUrl);
+
+        ItemModel itemModelForReturn = itemService.createItem(itemModel);
+        ItemVO itemVO = convertVOFromModel(itemModelForReturn);
+
+        return CommonReturnType.create(itemVO);
+    }
+
+    private ItemVO convertVOFromModel(ItemModel itemModel) {
+        if (itemModel == null) {
+            return null;
+        }
+        ItemVO itemVO = new ItemVO();
+        BeanUtils.copyProperties(itemModel, itemVO);
+        return itemVO;
+    }
+}

src/main/java/com/cxyxiaomo/flashsale/controller/viewobject/ItemVO.java

@@ -0,0 +1,82 @@
+package com.cxyxiaomo.flashsale.controller.viewobject;
+
+import java.math.BigDecimal;
+
+public class ItemVO {
+    // 商品价格
+    private Integer id;
+
+    // 商品名称
+    private String title;
+
+    // 商品价格
+    private BigDecimal price;
+
+    // 商品的库存
+    private Integer stock;
+
+    // 商品的描述
+    private String description;
+
+    // 商品的销量
+    private Integer sales;
+
+    // 商品描述图片的URL
+    private String imgUrl;
+
+    public Integer getId() {
+        return id;
+    }
+
+    public void setId(Integer id) {
+        this.id = id;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public void setTitle(String title) {
+        this.title = title;
+    }
+
+    public BigDecimal getPrice() {
+        return price;
+    }
+
+    public void setPrice(BigDecimal price) {
+        this.price = price;
+    }
+
+    public Integer getStock() {
+        return stock;
+    }
+
+    public void setStock(Integer stock) {
+        this.stock = stock;
+    }
+
+    public String getDescription() {
+        return description;
+    }
+
+    public void setDescription(String description) {
+        this.description = description;
+    }
+
+    public Integer getSales() {
+        return sales;
+    }
+
+    public void setSales(Integer sales) {
+        this.sales = sales;
+    }
+
+    public String getImgUrl() {
+        return imgUrl;
+    }
+
+    public void setImgUrl(String imgUrl) {
+        this.imgUrl = imgUrl;
+    }
+}

src/main/java/com/cxyxiaomo/flashsale/dao/ItemStockDOMapper.java

@@ -35,6 +35,8 @@ public interface ItemStockDOMapper {
      */
     ItemStockDO selectByPrimaryKey(Integer id);
 
+    ItemStockDO selectByItemId(Integer id);
+
     /**
      * This method was generated by MyBatis Generator.
      * This method corresponds to the database table item_stock

src/main/java/com/cxyxiaomo/flashsale/service/ItemService.java

@@ -0,0 +1,17 @@
+package com.cxyxiaomo.flashsale.service;
+
+import com.cxyxiaomo.flashsale.error.BusinessException;
+import com.cxyxiaomo.flashsale.service.model.ItemModel;
+
+import java.util.List;
+
+public interface ItemService {
+    // 创建商品
+    ItemModel createItem(ItemModel itemModel) throws BusinessException;
+
+    // 商品列表浏览
+    List<ItemModel> listItem();
+
+    // 商品详情浏览
+    ItemModel getItemById(Integer id);
+}

src/main/java/com/cxyxiaomo/flashsale/service/impl/ItemServiceImpl.java

@@ -0,0 +1,105 @@
+package com.cxyxiaomo.flashsale.service.impl;
+
+import com.cxyxiaomo.flashsale.dao.ItemDOMapper;
+import com.cxyxiaomo.flashsale.dao.ItemStockDOMapper;
+import com.cxyxiaomo.flashsale.dataobject.ItemDO;
+import com.cxyxiaomo.flashsale.dataobject.ItemStockDO;
+import com.cxyxiaomo.flashsale.error.BusinessException;
+import com.cxyxiaomo.flashsale.error.EmBusinessError;
+import com.cxyxiaomo.flashsale.service.ItemService;
+import com.cxyxiaomo.flashsale.service.model.ItemModel;
+import com.cxyxiaomo.flashsale.validator.ValidationResult;
+import com.cxyxiaomo.flashsale.validator.ValidatorImpl;
+import org.springframework.beans.BeanUtils;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+import org.springframework.transaction.annotation.Transactional;
+
+import java.math.BigDecimal;
+import java.util.List;
+
+@Service
+public class ItemServiceImpl implements ItemService {
+
+    @Autowired
+    private ValidatorImpl validator;
+
+    @Autowired
+    private ItemDOMapper itemDOMapper;
+
+    @Autowired
+    private ItemStockDOMapper itemStockDOMapper;
+
+    @Override
+    @Transactional
+    public ItemModel createItem(ItemModel itemModel) throws BusinessException {
+        // 校验入参
+        ValidationResult result = validator.validate(itemModel);
+
+        if (result.isHasErrors()) {
+            throw new BusinessException(EmBusinessError.PARAMETER_VALIDATION_ERROR, result.getErrMsg());
+        }
+
+        // 转化 ItemModel -> Data Object
+        ItemDO itemDO = this.convertItemDOFromItemModel(itemModel);
+
+        // 写入数据库
+        itemDOMapper.insertSelective(itemDO);
+        itemModel.setId(itemDO.getId());
+
+        ItemStockDO itemStockDO = this.convertItemStockDOFormItemStockModel(itemModel);
+
+        itemStockDOMapper.insertSelective(itemStockDO);
+
+        // 返回创建完成的对象
+        return this.getItemById(itemModel.getId());
+    }
+
+    private ItemDO convertItemDOFromItemModel(ItemModel itemModel) {
+        if (itemModel == null) {
+            return null;
+        }
+        ItemDO itemDO = new ItemDO();
+        BeanUtils.copyProperties(itemModel, itemDO);
+
+        return itemDO;
+    }
+
+    private ItemStockDO convertItemStockDOFormItemStockModel(ItemModel itemModel) {
+        if (itemModel == null) {
+            return null;
+        }
+        ItemStockDO itemStockDO = new ItemStockDO();
+        itemStockDO.setItemId(itemModel.getId());
+        itemStockDO.setStock(itemModel.getStock());
+
+        return itemStockDO;
+    }
+
+    @Override
+    public List<ItemModel> listItem() {
+        return null;
+    }
+
+    @Override
+    public ItemModel getItemById(Integer id) {
+        ItemDO itemDO = itemDOMapper.selectByPrimaryKey(id);
+        if (itemDO == null) {
+            return null;
+        }
+        // 操作获得库存数量
+        ItemStockDO itemStockDO = itemStockDOMapper.selectByItemId(itemDO.getId());
+
+        // 将Data Object -> Model
+        ItemModel itemModel = convertModelFromDataObject(itemDO, itemStockDO);
+        return itemModel;
+    }
+
+    private ItemModel convertModelFromDataObject(ItemDO itemDO, ItemStockDO itemStockDO) {
+        ItemModel itemModel = new ItemModel();
+        BeanUtils.copyProperties(itemDO, itemModel);
+        itemModel.setStock(itemStockDO.getStock());
+
+        return itemModel;
+    }
+}

src/main/java/com/cxyxiaomo/flashsale/service/model/ItemModel.java

@@ -1,5 +1,8 @@
 package com.cxyxiaomo.flashsale.service.model;
 
+import javax.validation.constraints.Min;
+import javax.validation.constraints.NotBlank;
+import javax.validation.constraints.NotNull;
 import java.math.BigDecimal;
 
 public class ItemModel {
@@ -7,21 +10,27 @@ public class ItemModel {
     private Integer id;
 
     // 商品名称
+    @NotBlank(message = "商品名称不能为空")
     private String title;
 
     // 商品价格
+    @NotNull(message = "商品价格不能为空")
+    @Min(value = 0, message = "商品价格必须大于0")
     private BigDecimal price;
 
     // 商品的库存
+    @NotNull(message = "库存不能不填")
     private Integer stock;
 
     // 商品的描述
+    @NotBlank(message = "商品描述信息不能为空")
     private String description;
 
     // 商品的销量
     private Integer sales;
 
     // 商品描述图片的URL
+    @NotBlank(message = "商品描述图片不能为空")
     private String imgUrl;
 
     public Integer getId() {

src/main/resources/mapping/ItemStockDOMapper.xml

@@ -108,4 +108,10 @@
       item_id = #{itemId,jdbcType=INTEGER}
     where id = #{id,jdbcType=INTEGER}
   </update>
+  <select id="selectByItemId" parameterType="java.lang.Integer" resultMap="BaseResultMap">
+    select
+    <include refid="Base_Column_List" />
+    from item_stock
+    where item_id = #{itemId,jdbcType=INTEGER}
+  </select>
 </mapper>