概述

既然是商铺编辑，肯定要根据入参shopId获取shop信息，然后用户在客户端修改店铺信息后，提交到后台更新商铺信息。

所以同样的对于Service层来讲有2个方法（DAO层也有对应的两个方法，只不过updateShop我们复用了）

Shop getShopById(long shopId);
ShopExecution modifyShop(Shop shop, InputStream shopFileInputStream, String fileName) throws ShopOperationException;

结构

Service层接口及其实现类

com.artisan.o2o.service.ShopService 接口新增两个接口方法如下

/*** * * @Title: getShopById* * @Description: 根据shopId查询商铺* * @param shopId* @return* * @return: Shop*/Shop getShopById(long shopId);/*** * * @Title: modifyShop* * @Description: 编辑商铺信息* * @param shop* @param shopFileInputStream* @param fileName* @return* * @return: ShopExecution*/ShopExecution modifyShop(Shop shop, InputStream shopFileInputStream, String fileName) throws ShopOperationException;

com.artisan.o2o.service.impl.ShopServiceImpl.java实现类

@Overridepublic Shop getShopById(long shopId) {return shopDao.selectShopById(shopId);}@Override@Transactionalpublic ShopExecution modifyShop(Shop shop, InputStream shopFileInputStream, String fileName) throws ShopOperationException {if (shop == null || shop.getShopId() == null) {return new ShopExecution(ShopStateEnum.NULL_SHOP_INFO);}else{try {// 1. 判断是否需要处理图片if (shopFileInputStream != null && fileName != null && !"".equals(fileName)) {// 1.1 删除掉旧的图片// 查询入参shop对应数据库表中的shopImg路径Shop tempShop = shopDao.selectShopById(shop.getShopId());if (tempShop != null) {// 删除就的缩略图ImageUtil.deleteStorePath(tempShop.getShopImg());}// 1.2 用新的图片生成缩略图addShopImg(shop, shopFileInputStream, fileName);}// 2. 更新店铺信息// 2.1 更新一些必要属性shop.setLastEditTime(new Date());// 2.2 更新店铺int effectedNum = shopDao.updateShop(shop);if (effectedNum <= 0) {throw new ShopOperationException(ShopStateEnum.INNER_ERROR.getStateInfo());}return new ShopExecution(ShopStateEnum.SUCCESS, shop);} catch (Exception e) {e.printStackTrace();throw new ShopOperationException("modify shop error:" + e.getMessage());}}}

因为用户有可能更新图片，其中为了删除旧的文件或者目录，com.artisan.o2o.util.ImageUtil.java 新增了工具类

/*** * * @Title: deleteStorePath* * @Description: 判断storePath是否为目录，为目录的话删掉目录下的所有文件，否则删掉文件* * @param storePath* * @return: void*/public static void deleteStorePath(String storePath) {File fileOrMenu = new File(FileUtil.getImgBasePath() + storePath);if (fileOrMenu != null) {if (fileOrMenu.isDirectory()) {File[] files = fileOrMenu.listFiles();for (int i = 0; i < files.length; i++) {files[i].delete();}}fileOrMenu.delete();}}

单元测试

@Testpublic void testModifyShop() {Shop shop = new Shop();Area area = new Area();ShopCategory shopCategory = new ShopCategory();shop.setShopId(28L);area.setAreaId(2);shopCategory.setShopCategoryId(2L);shop.setArea(area);shop.setShopCategory(shopCategory);shop.setShopName("Modify咖啡店");shop.setShopDesc("Modify小工匠的咖啡店");shop.setShopAddr("Modify-NanJing");shop.setPhone("123456");shop.setPriority(78);File shopFile = new File("D:/o2o/artisan.jpg");ShopExecution se = null;InputStream ins = null;try {ins = new FileInputStream(shopFile);se = shopService.modifyShop(shop, ins, shopFile.getName());} catch (FileNotFoundException e) {e.printStackTrace();}Assert.assertEquals(ShopStateEnum.SUCCESS.getState(), se.getState());}

运行符合预期。

控制台日志

Creating a new SqlSession
Registering transaction synchronization for SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@61544ae6]
JDBC Connection [com.mchange.v2.c3p0.impl.NewProxyConnection@3fed2870] will be managed by Spring
==>  Preparing: SELECT s.shop_id, s.shop_name, s.shop_desc, s.shop_addr, s.phone, s.shop_img, s.priority, s.create_time, s.last_edit_time, s.enable_status, s.advice, a.area_id, a.area_name, sc.shop_category_id, sc.shop_category_name FROM tb_shop s, tb_area a, tb_shop_category sc WHERE s.area_id = a.area_id AND s.shop_category_id = sc.shop_category_id AND s.shop_id = ?
==> Parameters: 28(Long)
<==    Columns: shop_id, shop_name, shop_desc, shop_addr, phone, shop_img, priority, create_time, last_edit_time, enable_status, advice, area_id, area_name, shop_category_id, shop_category_name
<==        Row: 28, Modify咖啡店, Modify小工匠的咖啡店, Modify-NanJing, 123456, \upload\item\shopImage\28\2018060301211217157.jpg, 78, 2018-05-28 23:13:37.0, 2018-06-03 01:21:14.0, 0, null, 1, 北京, 1, 咖啡奶茶
<==      Total: 1
Releasing transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@61544ae6]
Fetched SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@61544ae6] from current transaction
==>  Preparing: update tb_shop SET shop_name=?, shop_desc=?, shop_addr=?, phone=?, shop_img=?, priority=?, last_edit_time=?, area_id=?, shop_category_id=? where shop_id = ?
==> Parameters: Modify咖啡店(String), Modify小工匠的咖啡店(String), Modify-NanJing(String), 123456(String), \upload\item\shopImage\28\2018060301223045572.jpg(String), 78(Integer), 2018-06-03 01:22:31.968(Timestamp), 2(Integer), 2(Long), 28(Long)
<==    Updates: 1
Releasing transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@61544ae6]
Transaction synchronization committing SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@61544ae6]
Transaction synchronization deregistering SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@61544ae6]
Transaction synchronization closing SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@61544ae6]

库表字段正常

旧的图片被删除，新的图片OK

Github地址

代码地址： https://github.com/yangshangwei/o2o

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实战SSM_O2O商铺_18【商铺编辑】Service层开发

文章目录

概述

结构

Service层接口及其实现类

单元测试

Github地址

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