校园商铺-8商品模块-1商品添加之Dao层

学习目标：

• 1.实现商品的添加
• 2.掌握批量图片添加
  

根据已有的店铺和商品类别，插入一条商品信息

insert into tb_product(product_name,product_desc,img_addr,normal_price,promotion_price,priority,enable_status,product_category_id,shop_id)
values('美式咖啡','美式咖啡的描述','美式咖啡的缩略图',15,10,2,1,10,1)

1. 商品Dao层

1.1 商品Dao接口

ProductDao.java

package com.csj2018.o2o.dao;

import java.util.List;

import org.apache.ibatis.annotations.Param;

import com.csj2018.o2o.entity.Product;

public interface ProductDao {
	List<Product> queryProductList(@Param("productCondition") Product productCondition, @Param("beginIndex") int beginIndex, @Param("pageSize") int pageSize);
	int queryProductCount(Product productCondition);
	Product queryProductById(Long productId);
	/**
	 * 插入商品，商品只能一个一个的添加，不存在添加一个商品列表的情况
	 * @param product
	 * @return
	 */
	int insertProduct(Product product);
	/**
	 * 更新商品信息
	 * @param product
	 * @return
	 */
	int updateProduct(Product product);
	int updateProductCategoryToNull(Long productId);
	int deleteProduct(Product product);
}

1.2 商品mapper文件 ProductDao.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper
 PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
 "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
 <mapper namespace="com.csj2018.o2o.dao.ProductDao"><!-- 对应接口类名 -->
 	<insert id="insertProduct" parameterType="com.csj2018.o2o.entity.Product" useGeneratedKeys="true" keyProperty="productId" keyColumn="product_id">
 		insert into tb_product(
 			product_name,product_desc,img_addr,normal_price,promotion_price,
 			priority,create_time,last_edit_time,enable_status,product_category_id,shop_id
 		)values(
 			#{productName},#{productDesc},#{imgAddr},#{normalPrice},#{promotionPrice},
 			#{priority},#{createTime},#{lastEditTime},#{enableStatus},#{productCategory.productCategoryId},#{shop.shopId}
 		)
 	</insert>
 </mapper>

1.3 商品Dao单元测试

package com.csj2018.o2o.dao;


import static org.junit.Assert.assertEquals;

import java.util.Date;

import org.junit.FixMethodOrder;
import org.junit.Test;
import org.junit.runners.MethodSorters;
import org.springframework.beans.factory.annotation.Autowired;

import com.csj2018.o2o.BaseTest;
import com.csj2018.o2o.entity.Product;
import com.csj2018.o2o.entity.ProductCategory;
import com.csj2018.o2o.entity.Shop;

@FixMethodOrder(MethodSorters.NAME_ASCENDING)
public class ProductDaoTest extends BaseTest{
	@Autowired
	private ProductDao productDao;
	@Autowired
	private ProductImgDao productImgDao;
	
	@Test
	public void testAInsertProduct() throws Exception{
		Shop shop1 = new Shop();
		shop1.setShopId(1L);
		ProductCategory pc1 = new ProductCategory();
		pc1.setProductCategoryId(10L);
		Product product1 = new Product();
		product1.setProductName("商品1");
		product1.setProductDesc("商品1的描述");
		product1.setImgAddr("商品1的缩略图");
		product1.setPriority(1);
		product1.setEnableStatus(1);
		product1.setCreateTime(new Date());
		product1.setLastEditTime(new Date());
		product1.setShop(shop1);
		product1.setProductCategory(pc1);
		
		Product product2 = new Product();
		product2.setProductName("商品2");
		product2.setProductDesc("商品2的描述");
		product2.setImgAddr("商品2的缩略图");
		product2.setPriority(2);
		product2.setEnableStatus(0);
		product2.setCreateTime(new Date());
		product2.setLastEditTime(new Date());
		product2.setShop(shop1);
		product2.setProductCategory(pc1);
		
		Product product3 = new Product();
		product3.setProductName("商品3");
		product3.setProductDesc("商品3的描述");
		product3.setImgAddr("商品3的缩略图");
		product3.setPriority(3);
		product3.setEnableStatus(1);
		product3.setCreateTime(new Date());
		product3.setLastEditTime(new Date());
		product3.setShop(shop1);
		product3.setProductCategory(pc1);
		
		int effectedNum = productDao.insertProduct(product1);
		assertEquals(1,effectedNum);
		effectedNum = productDao.insertProduct(product2);
		assertEquals(1,effectedNum);
		effectedNum = productDao.insertProduct(product3);
		assertEquals(1,effectedNum);
	}
}

2.商品图片Dao层

2.1 商品图片Dao层接口ProductImgDao.java

package com.csj2018.o2o.dao;

import java.util.List;

import com.csj2018.o2o.entity.ProductImg;

public interface ProductImgDao {
	
	List<ProductImg> queryProductImgList(long productId);
	/**
	 * 批量添加商品详情图片
	 * @param productImgList
	 * @return
	 */
	int batchInsertProductImg(List<ProductImg> productImgList);
	
	int deleteProductImgByProductId(long productId);
}

2.2 mapper文件ProductImgDao.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE mapper
 PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
 "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
 <mapper namespace="com.csj2018.o2o.dao.ProductImgDao"><!-- 对应接口类名 -->
 	<insert id="batchInsertProductImg" parameterType="java.util.List">
 		insert into tb_product_img(
 			img_addr,img_desc,priority,create_time,product_id
 		)values <foreach collection="list" item="productImg" index="index" separator=",">
 			(#{productImg.imgAddr},#{productImg.imgDesc},#{productImg.priority},#{productImg.createTime},#{productImg.productId})
 		</foreach>
 	</insert>
 	<select id="queryProductImgList" parameterType="Long" resultType="com.csj2018.o2o.entity.ProductImg">
 		select 
 			product_img_id,img_addr,img_desc,priority,create_time,product_id 
 		FROM tb_product_img 
 			where product_id=#{productId}
 			order by priority desc
 	</select>
 	<delete id="deleteProductImgByProductId" parameterType="Long" >
 		delete from tb_product_img where product_id = #{productId}
 	</delete>
 </mapper>

1.3Dao层单元测试

package com.csj2018.o2o.dao;

import static org.junit.Assert.assertEquals;

import java.util.ArrayList;
import java.util.Date;
import java.util.List;

import org.junit.FixMethodOrder;
import org.junit.Ignore;
import org.junit.Test;
import org.junit.runners.MethodSorters;
import org.springframework.beans.factory.annotation.Autowired;

import com.csj2018.o2o.BaseTest;
import com.csj2018.o2o.entity.ProductImg;

@FixMethodOrder(MethodSorters.NAME_ASCENDING)
public class ProductImgDaoTest extends BaseTest{
	@Autowired
	private ProductImgDao productImgDao;
	@Test
//	@Ignore
	public void testABatchInsertProductImg() throws Exception{

		ProductImg productImg1 = new ProductImg();
		productImg1.setImgAddr("图片1");
		productImg1.setImgDesc("测试图片1");
		productImg1.setPriority(1);
		productImg1.setCreateTime(new Date());
		productImg1.setProductId(1L);
		
		ProductImg productImg2 = new ProductImg();
		productImg2.setImgAddr("图片2");
		productImg2.setImgDesc("测试图片2");
		productImg2.setPriority(1);
		productImg2.setCreateTime(new Date());
		productImg2.setProductId(1L);
		List<ProductImg> productImgList = new ArrayList<ProductImg>();
		productImgList.add(productImg1);
		productImgList.add(productImg2);
		
		int effectedNum = productImgDao.batchInsertProductImg(productImgList);
		assertEquals(2,effectedNum);
	}
	@Test
//	@Ignore
	public void testBQueryProductImgList() {
		List<ProductImg> productImgList = productImgDao.queryProductImgList(1L);
		assertEquals(2,productImgList.size());
	}
	@Test
//	@Ignore
	public void testCDeleteProductImgByProductId() throws Exception{
		long productId =1;
		int effectedNum = productImgDao.deleteProductImgByProductId(productId);
		assertEquals(2,effectedNum);
	}
}