实战SSM_O2O商铺_19【商铺编辑】Controller层开发

/**
   * 
   * 
   * @Title: getShopInfoById
   * 
   * @Description: 根据shopId获取shop信息， 接收前端的请求，获取shopId ，所以入参为HttpServletRequest
   * @ResponseBody 不需要VIEW展现层模块，直接显示到客户端的内容。 将内容或对象作为 HTTP 响应正文返回
   * 
   * @param request
   * 
   * @return: Map<String,Object>
   */
  @RequestMapping(value = "/getshopinfobyId", method = RequestMethod.GET)
  @ResponseBody
  public Map<String, Object> getShopInfoById(HttpServletRequest request) {
    Map<String, Object> modelMap = new HashMap<String, Object>();
    // shopId 为和前端约定好的变量
    int shopId = HttPServletRequestUtil.getInt(request, "shopId");
    try {
      if (shopId >= 0) {
        // 查询 ，按照设计，我们希望前端页面下拉列表中可以修改区域信息，所以需要查询出来全量的区域列表
        // 对已ShopCategory而言，我们DAO层的SQL已经将shop_category_id和
        // shop_category_name 查询出来，前端设置到对应的属性上即可。没有必要全部查询出来。
        Shop shop = shopService.getShopById(shopId);
        List<Area> areaList = areaservice.getAreaList();
        modelMap.put("success", true);
        modelMap.put("shop", shop);
        modelMap.put("areaList", areaList);
      } else {
        modelMap.put("success", false);
        modelMap.put("errMsg", "shopId不合法");
      }
    } catch (Exception e) {
      modelMap.put("success", false);
      modelMap.put("errMsg", e.getMessage());
    }
    return modelMap;
  }

{
    "shop": {
        "shopId": 30,
        "shopName": "优乐美",
        "shopDesc": "优乐美奶茶店",
        "shopAddr": "复兴街",
        "phone": "123456",
        "shopImg": "\\upload\\item\\shopImage\\30\\2018053001010899137.png",
        "priority": null,
        "createTime": 1527656467000,
        "lastEditTime": 1527656467000,
        "enableStatus": 0,
        "advice": null,
        "owner": null,
        "area": {
            "areaId": 1,
            "areaName": "北京",
            "areaDesc": null,
            "priority": null,
            "createTime": null,
            "lastEditTime": null
        },
        "shopCategory": {
            "shopCategoryId": 3,
            "shopCategoryName": "奶茶",
            "shopCategoryDesc": null,
            "shopCategoryImg": null,
            "priority": null,
            "createTime": null,
            "lastEditTime": null,
            "parent": null
        }
    },
    "success": true,
    "areaList": [
        {
            "areaId": 2,
            "areaName": "上海",
            "areaDesc": "魔都",
            "priority": 99,
            "createTime": 1526259636000,
            "lastEditTime": 1526346041000
        },
        {
            "areaId": 1,
            "areaName": "北京",
            "areaDesc": "帝都",
            "priority": 0,
            "createTime": 1526259626000,
            "lastEditTime": 1526346033000
        }
    ]
}

/**
   * 
   * 
   * @Title: modifyshop
   * 
   * @Description:
   * 
   * @param request
   *            因为是接收前端的请求，而前端的信息都封装在HttpServletRequest中，
   *            所以需要解析HttpServletRequest，获取必要的参数
   * 
   *            1. 接收并转换相应的参数，包括shop信息和图片信息 2.修改店铺 3. 返回结果给前台
   * @return
   * 
   * @return: Map<String,Object>
   */
  @RequestMapping(value = "/modifyshop", method = RequestMethod.POST)
  @ResponseBody
  public Map<String, Object> modifyshop(HttpServletRequest request) {
    Map<String, Object> modelMap = new HashMap<String, Object>();
    // 0. 验证码校验
    if (!VerifyCodeUtil.verifyCode(request)) {
      modelMap.put("success", false);
      modelMap.put("errMsg", "验证码不正确");
      return modelMap;
    }
    // 1. 接收并转换相应的参数，包括shop信息和图片信息
    // 1.1 shop信息
    // shopStr 是和前端约定好的参数值，后端从request中获取request这个值来获取shop的信息
    String shopStr = HttPServletRequestUtil.getString(request, "shopStr");
    // 使用jackson-databind 将json转换为pojo
    ObjectMapper mapper = new ObjectMapper();
    Shop shop = null;
    try {
      // 将json转换为pojo
      shop = mapper.readValue(shopStr, Shop.class);
    } catch (Exception e) {
      e.printStackTrace();
      // 将错误信息返回给前台
      modelMap.put("success", false);
      modelMap.put("errMsg", e.getMessage());
      return modelMap;
    }
    // 1.2 图片信息 基于Apache Commons FileUpload的文件上传 （ 修改商铺信息 图片可以不更新）
    // Spring MVC中的 图片存在CommonsMultipartFile中
    CommonsMultipartFile shopImg = null;
    // 从request的本次会话中的上线文中获取图片的相关内容
    CommonsMultipartResolver commonsMultipartResolver = new CommonsMultipartResolver(request.getSession().getServletContext());
    if (commonsMultipartResolver.isMultipart(request)) {
      MultipartHttpServletRequest multipartRequest = (MultipartHttpServletRequest) request;
      // shopImg是和前端约定好的变量名
      shopImg = (CommonsMultipartFile) multipartRequest.getFile("shopImg");
    }
    // 2. 修改店铺
    if (shop != null && shop.getShopId() != null) {
      // Session 部分的 PersonInfo 修改商铺是不需要的设置的。
      // 修改店铺
      ShopExecution se = null;
      try {
        if (shopImg != null) {
          se = shopService.modifyShop(shop, shopImg.getInputStream(), shopImg.getOriginalFilename());
        } else {
          se = shopService.modifyShop(shop, null, null);
        }
        // 成功
        if (se.getState() == ShopStateEnum.SUCCESS.getState()) {
          modelMap.put("success", true);
          modelMap.put("errMsg", "修改成功");
        } else {
          modelMap.put("success", false);
          modelMap.put("errMsg", se.getStateInfo());
        }
      } catch (Exception e) {
        e.printStackTrace();
        modelMap.put("success", false);
        modelMap.put("errMsg", "ModifyShop Error");
      }
    } else {
      // 将错误信息返回给前台
      modelMap.put("success", false);
      modelMap.put("errMsg", "ShopId不合法");
    }
    return modelMap;
  }

// 2. 注册店铺
    if (shop != null && shopImg != null) {
      // Session
      // 店主persionInfo的信息，肯定要登录才能注册店铺。
      // 所以这部分信息我们从session中获取，尽量不依赖前端,这里暂时时不具备条件，后续改造，先硬编码，方便单元测试
      // PersonInfo personInfo = new PersonInfo();
      // personInfo.setUserId(1L);
      // 注册店铺之前登录，登录成功后，约定好将user这个key 设置到session中，
      // 这里通过key就可以取到PersonInfo的信息
      PersonInfo personInfo = (PersonInfo) request.getSession().getAttribute("user");
      shop.setOwner(personInfo);