shop--7.店铺信息编辑--Service层（包括更新店铺，对照片的处理）

 1     /**
 2      * 通过店铺Id获取店铺信息
 3      * 
 4      *@param shopId
 5      *@param shopImgInputStream
 6      *@return
 7      *
 8      */
 9     Shop getByShopId(long shopId);
10     
11     /**
12      * 更新店铺信息,包括对图片的处理
13      * 
14      *@param shop
15      *@param shopImgInputStream
16      *@param fileName
17      *
18      */
19     ShopExecution modifyShop(Shop shop,InputStream shopImgInputStream,String fileName) throws ShopOperationException;

 1     @Override
 2     public Shop getByShopId(long shopId) {
 3         return shopDao.queryByShopId(shopId);
 4     }
 5     @Override
 6     public ShopExecution modifyShop(Shop shop, InputStream shopImgInputStream, String fileName)
 7             throws ShopOperationException {
 8         if(shop ==null || shop.getShopId() == null) {
 9             return new ShopExecution(ShopStateEnum.NULL_SHOP);
10         }else {
11             try {
12         //1.判断是否需要处理图片
13            if(shopImgInputStream != null && fileName!=null &&!"".equals(fileName)) {//是否有图片传进来
14                Shop tempShop = shopDao.queryByShopId(shop.getShopId());
15                //判断之前的店铺信息中是否有shop图片，如果有的话，就先删除，没有的话，就直接加进去
16                if(tempShop.getShopImg()!=null) {
17                    ImageUtil.deleteFileOrPath(tempShop.getShopImg());
18                }
19                addShopImg(shop, shopImgInputStream, fileName);
20            }
21          //2.更新店铺信息
22            shop.setLastEditTime(new Date());
23            int effectdNum = shopDao.updateShop(shop);
24            if(effectdNum <= 0) {
25                return new ShopExecution(ShopStateEnum.INNER_ERROR);
26            }else {
27                shop = shopDao.queryByShopId(shop.getShopId());
28                return new ShopExecution(ShopStateEnum.SUCCESS,shop);
29            }}catch (Exception e) {
30             throw new ShopOperationException("modifyShop error: " + e.getMessage());
31         }
32         }
33         
34     }

 1     /**
 2      * 更新店铺时候用的 需要删除图片
 3        * storePath是文件的路径还是目录的路径
 4        * 如果storePath是文件路径则删除该文件
 5        * 如果storePath是目录路径则删除目录下的所有文件
 6        *@param storePath
 7        */
 8     public static void deleteFileOrPath(String storePath) {
 9         File fileOrPath = new File(PathUtil.getImgBasePath() + storePath);
10         if(fileOrPath.exists()) {
11             if(fileOrPath.isDirectory()) {//如果是目录，就删除所有的文件
12                 File files[] = fileOrPath.listFiles();
13                 for(int i = 0;i <files.length;i++) {
14                     files[i].delete();
15                 }
16             }
17             fileOrPath.delete();
18         }
19     }