postman上传文件

postman上传文件调接口，使用POST的form-data方式
文件数据在后台方法中的HttpServletRequest中。
①request中文件信息
②其实request中不仅有文件信息，还有其他文本信息也在里面，只不过需要通过key获取到该json字符串然后转成对象，这样可能会比较麻烦，需要前端Content-Type为form-data格式。
通过postman模拟
②-1 设置为text格式，将json串粘贴进去
②-2 使用文本的话，需要将request强转成MultipartHttpServletRequest再读文件里的信息

①上传文件.png
②后台使用map接收文本和文件，content-type为form-data.png
②request接收content里的内容，postman这样模拟。如果form-data上传的是文件，需要把request强转成MuiltPara..，再从里面读流.png

control类中方法

 /**
     * 导入
     */
    @RequestMapping(value = "/leadingIn", method = RequestMethod.POST)
    public ResponseObj<Boolean> leadingIn(InvestDetail investDetail,
                                          HttpServletRequest request,
                                          Map<String, InputStream> files) {
        //测试
        try {
            MultipartHttpServletRequest mulRequest = (MultipartHttpServletRequest) request;
            Set<Map.Entry<String, MultipartFile>> set = mulRequest.getFileMap().entrySet();
            Map<String, InputStream> listFile = new LinkedHashMap<>();
            System.out.println("个数" + set.size());
            for (Map.Entry<String, MultipartFile> each : set) {
                String fileName = each.getKey();
                MultipartFile file = each.getValue();
                //这里需要上传FTP
                try {
                    listFile.put(fileName, file.getInputStream());
                } catch (Exception ex) {
                    return new ResponseObj<>(false, null);
                }
            }

            String formjson = mulRequest.getParameter("content");
            ObjectMapper mapper = new ObjectMapper();
            mapper.setVisibility(PropertyAccessor.FIELD, JsonAutoDetect.Visibility.ANY);
            mapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
            
            OrderReturn orderReturn = mapper.readValue(formjson, OrderReturn.class);
            boolean result = iInstallWorkOrder.receiptOrder(orderReturn, listFile);

//            boolean result = iInstallWorkOrder.upLoadFile(listFile);
//            boolean result = true;

            return new ResponseObj<>(result, null);
        } catch (Exception ex) {
            return new ResponseObj<>(false, null);
        }

    }

public ResponseObj<Boolean> saveOrSubmit(HttpServletRequest request) {
        Business business = null;

        try {
            String json = request.getParameter("content");
            if (!StringUtils.isEmpty(json)) {
                ObjectMapper oMapper = new ObjectMapper();
                oMapper.configure(DeserializationFeature.FAIL_ON_UNKNOWN_PROPERTIES, false);
                business = oMapper.readValue(json, Business.class);
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
}