shop--6.店铺注册--店铺注册之Controller层（逻辑）

1.接收并转化相应的参数，包括店铺信息和图片信息

2.注册店铺

3.返回结果

    @Controller
    @RequestMapping("/shopadmin")
    public class ShopManagementController{ 
    @Autowired
    private ShopService shopService;
    //注册店铺
    @RequestMapping(value="/registershop", method= RequestMethod.POST )
    @ResponseBody
    public Map<String, Object> registerShop(HttpServletRequest request){
        Map<String, Object> modelMap = new HashMap<String,Object>();
        //1.接收并转化相应的参数，包括店铺信息和图片信息
        String shopStr = HttpServletRequestUtil.getString( request, "shopStr" );
        ObjectMapper mapper = new ObjectMapper(); // create once, reuse
        Shop shop = null;
        try {
            shop = mapper.readValue(shopStr, Shop.class);
        } catch (IOException e) {
            modelMap.put("success", false);
            modelMap.put("errMsg", e.getMessage());
            return modelMap;
        }
        //-----------------------------------------------------------------------------
        //获取文件流
        CommonsMultipartFile shopImg = null;
        //在本次会话的上下文获取上传的文件
        CommonsMultipartResolver commonsMultipartResolver =
                new CommonsMultipartResolver(request.getSession().getServletContext());
        //如果文件上传的有值
        if(commonsMultipartResolver.isMultipart( request )){
            MultipartHttpServletRequest multipartHttpServletRequest = (MultipartHttpServletRequest)request;
            shopImg = (CommonsMultipartFile)multipartHttpServletRequest.getFile("shopImg");
        } else{
            modelMap.put( "success", false );
            modelMap.put("errMsg", "上传图片不能为空");
            return modelMap;
        }
        //2.注册店铺
        if(shop != null && shopImg != null){
            PersonInfo user = (PersonInfo) request.getSession().getAttribute("user");
            shop.setOwner( user );
            ShopExecution shopExecution = shopService.addShop(shop, shopImg);
            if(shopExecution.getState() == ShopStateEnum.CHECK.getState()){
                modelMap.put( "success", true );
 
            }else{
                modelMap.put( "success", false );
                modelMap.put( "errMsg",  shopExecution.getStateInfo());
            }
        }else{
            modelMap.put("success", false);
            modelMap.put("errMsg", "请输入店铺信息");
        }
        //3.返回结果
        return modelMap;
    }
    }

解析request里面的一些参数

HttpServletRequestUtil

public class HttpServletRequestUtil {
    public static int getInt(HttpServletRequest request,String key) {
        try {
            return Integer.decode(request.getParameter(key));
        }catch (Exception e) {
            //如果转化失败
            return -1;
        }
    }
    public static long getLong(HttpServletRequest request,String key) {
        try {
            return Long.valueOf(request.getParameter(key));
        }catch (Exception e) {
            //如果转化失败
            return -1;
        }
    }
    public static Double getDouble(HttpServletRequest request,String key) {
        try {
            return Double.valueOf(request.getParameter(key));
        }catch (Exception e) {
            //如果转化失败
            return -1d;
        }
    }
    public static boolean getBoolean(HttpServletRequest request,String key) {
        try {
            return Boolean.valueOf(request.getParameter(key));
        }catch (Exception e) {
            //如果转化失败
            return false;
        }
    }
    
    public static String getString(HttpServletRequest request,String key) {
        try {
            String result = request.getParameter(key);
            if(result!=null) {
                result = result.trim();
            }
            if("".equals(result)) {
                result = null;
            }
            return result;
        }catch (Exception e) {
            return null;
        }
    }
}

改造后的Controller

@RequestMapping(value = "/registershop", method = RequestMethod.POST)
    @ResponseBody
    private Map<String, Object> registerShop(HttpServletRequest request) {
        Map<String, Object> modelMap = new HashMap<String, Object>();
        if (!CodeUtil.checkVerifyCode(request)) {
            modelMap.put("success", false);
            modelMap.put("error", "输入了错误的验证码");
            return modelMap;
        }
        // 1.接受并转化相应的参数，包括店铺信息以及图片信息
        String shopStr = HttpServletRequestUtil.getString(request, "shopStr");
        ObjectMapper mapper = new ObjectMapper();
        Shop shop = null;
        try {
            shop = mapper.readValue(shopStr, Shop.class);
        } catch (Exception e) {
            modelMap.put("success", false);
            modelMap.put("errMsg", e.getMessage());
            return modelMap;
        }
        CommonsMultipartFile shopImg = null;
        CommonsMultipartResolver commonsMultipartResolver = new CommonsMultipartResolver(
                request.getSession().getServletContext());
        // 如果文件上传有值的话
        if (commonsMultipartResolver.isMultipart(request)) {
            MultipartHttpServletRequest multipartHttpServletRequest = (MultipartHttpServletRequest) request;
            shopImg = (CommonsMultipartFile) multipartHttpServletRequest.getFile("shopImg");
        } else {
            modelMap.put("success", false);
            modelMap.put("errMsg", "上传图片不能为空");
            return modelMap;
        }
        // 2.注册店铺
        if (shop != null && shopImg != null) {

            PersonInfo owner = (PersonInfo) request.getSession().getAttribute("user");

            shop.setOwner(owner);
            ShopExecution se;
            try {
                se = shopService.addShop(shop, shopImg.getInputStream(), shopImg.getOriginalFilename());
                if (se.getState() == ShopStateEnum.CHECK.getState()) {
                    modelMap.put("success", true);
                    // 需要在session中保存一个店铺列表 就是用户可操作的店铺
                    @SuppressWarnings("unchecked")
                    List<Shop> shopList = (List<Shop>) request.getSession().getAttribute("shopList");
                    if (shopList == null || shopList.size() == 0) {
                        shopList = new ArrayList<Shop>();

                    }
                    shopList.add(se.getShop());
                    request.getSession().setAttribute("shopList", shopList);

                } else {
                    modelMap.put("errMsg", se.getStateInfo());
                }
            } catch (ShopOperationException e) {
                modelMap.put("success", false);
                modelMap.put("errMsg", e.getMessage());
            } catch (IOException e) {
                modelMap.put("success", false);
                modelMap.put("errMsg", e.getMessage());
            }

            return modelMap;
        } else {
            modelMap.put("success", false);
            modelMap.put("errMsg", "请输入店铺信息");
            return modelMap;
        }
        // 3.返回结果
    }