商品类别批量添加后端开发-批量添加在mapper和controller的写法

商品类别批量添加后端开发-批量添加在mapper和controller的写法

本文转载自链接：https://blog.csdn.net/weixin_40703303/article/details/89607701

一、dao层

1、编写接口 ProductCategoryDao

public interface ProductCategoryDao {
	/**
	 * 批量新增商品类别
	 * @param productCategoryList
	 * @return
	 */
	int batchInsertProductCategory(List productCategoryList);
}

2、编写mapper实现

批量插入用标签

传入的因为是list所以collection是list，

item是迭代的属性名， 

index指定一个名字，用于表示在迭代过程中，每次迭代到的位置， 

separator表示在每次进行迭代之间以什么符号作为分隔符

 	
 		INSERT INTO
 		tb_product_category(product_category_name,priority,create_time,shop_id)
 		VALUES
 		
 			(
 			#{productCategory.productCategoryName},
 			#{productCategory.priority},
 			#{productCategory.createTime},
 			#{productCategory.shopId}
 			)
 		
 	

3、测试

public class ProductCategoryDaoTest extends BaseTest{
	@Autowired
	private ProductCategoryDao productCategoryDao;
	@Test
	public void testBatchInsertProductCategory() {
		ProductCategory productCategory = new ProductCategory();
		productCategory.setProductCategoryName("商品类别1");
		productCategory.setPriority(1);
		productCategory.setCreateTime(new Date());
		productCategory.setShopId(1L);
		ProductCategory productCategory2 = new ProductCategory();
		productCategory2.setProductCategoryName("商品类别2");
		productCategory2.setPriority(2);
		productCategory2.setCreateTime(new Date());
		productCategory2.setShopId(1L);
		List productCategoryList = new ArrayList();
		productCategoryList.add(productCategory);
		productCategoryList.add(productCategory2);
		int effectedNum = productCategoryDao.batchInsertProductCategory(productCategoryList);
		assertEquals(2, effectedNum);
	}
}

二、service层

1、编写接口

public interface ProductCategoryService {
	/**
	 * 批量添加商品类别
	 * @param productCategoryList
	 * @return
	 * @throws ProductCategoryOperationException
	 */
	ProductCategoryExecution batchAddProductCategory(List productCategoryList)
	throws ProductCategoryOperationException;
}

2、编写接口实现类

记得要有@Transactional事务的注解，因为异常里用到了

@Service
public class ProductCategoryServiceImpl implements ProductCategoryService{
	@Autowired
	private ProductCategoryDao productCategoryDao;
	@Override
	@Transactional
	public ProductCategoryExecution batchAddProductCategory(List productCategoryList)
			throws ProductCategoryOperationException {
		if(productCategoryList!=null && productCategoryList.size() > 0) {
			try {
				int effectedNum = productCategoryDao.batchInsertProductCategory(productCategoryList);
				if(effectedNum <= 0) {
					throw new ProductCategoryOperationException("店铺类别创建失败");
				} else {
					return new ProductCategoryExecution(ProductCategoryStateEnum.SUCCESS);
				}
			} catch (Exception e) {
				throw new ProductCategoryOperationException("batchAddProductCategory error:"+ e.getMessage());
			}
		}else {
			return new ProductCategoryExecution(ProductCategoryStateEnum.EMPTY_LIST);
		}
	}
}

三、编写controller

注意

1、这里前端传入的是list，所以RequestMapping里的method要是POST

2、addProductCategorys中用@RequestBody接收前端传来的List

@Controller
@RequestMapping("/shopadmin")
public class ProductCategoryManagementController {
	@Autowired
	private ProductCategoryService productCategoryService;
	@RequestMapping(value = "/addproductcategorys", method = RequestMethod.POST)
	@ResponseBody
	private Map addProductCategorys(@RequestBody List productCategoryList,
			HttpServletRequest request) {
		Map modelMap = new HashMap();
		Shop currentShop = (Shop) request.getSession().getAttribute("currentShop");
		for (ProductCategory pc : productCategoryList) {
			pc.setShopId(currentShop.getShopId());
		}
		if (productCategoryList != null && productCategoryList.size() > 0) {
			try {
				ProductCategoryExecution pe = productCategoryService.batchAddProductCategory(productCategoryList);
				if (pe.getState() == ProductCategoryStateEnum.SUCCESS.getState()) {
					modelMap.put("success", true);
				} else {
					modelMap.put("success", false);
					modelMap.put("errMsg", pe.getStateInfo());
				}
			} catch (Exception e) {
				modelMap.put("success", false);
				modelMap.put("errMsg", e.toString());
				return modelMap;
			}
		} else {
			modelMap.put("success", false);
			modelMap.put("errMsg", "请至少输入一个商品类别");
		}
		return modelMap;
	}
}

 

文章最后发布于: 2019-05-16 12:12:58