springboot上传图片并post到远程接口

Myth丶恋晨 2021-09-08 09:20 398阅读 0赞

controller：

@RequestMapping(value = "/manager/uploadPic", method = RequestMethod.POST)
        public ResultObj uploadFileTest(@RequestParam("file") MultipartFile multipartFile) {
            ValidateUtil.isEmpty(multipartFile, "图片");
            ResultObj result = new ResultObj();
            String url = waterService.uploadFile(multipartFile);
            Map map = new HashMap<>();
            map.put("url", url);
            return ResultUtil.createSuccessResult(result, "success", map);
    
        }

service：

public String uploadFile(MultipartFile multipartFile) {
            try {
                File file = FileUtils.multipartFileToFile(multipartFile);
                return waterApiService.sendSupportApiPostFile(UPLOAD_PIC, file);
    
            } catch (Exception e) {
                e.printStackTrace();
            }
            return null;
        }

util：

public static File multipartFileToFile(MultipartFile file) throws Exception {
    
            File toFile = null;
            if (file.isEmpty() || file.getSize() <= 0) {
                return null;
            } else {
                InputStream ins = null;
                ins = file.getInputStream();
                toFile = new File(file.getOriginalFilename());
                inputStreamToFile(ins, toFile);
                ins.close();
            }
            return toFile;
        }

public static WaterResult apiSendPostFile(String url, File files) {
    
            WaterResult waterResult = new WaterResult();
            //设置请求头
            HttpHeaders headers = new HttpHeaders();
            //设置content-type
            MediaType type = MediaType.parseMediaType("multipart/form-data");
            headers.setContentType(type);
    
            MultiValueMap<String, Object> form = new LinkedMultiValueMap<>();
            if (files != null) {
                //设置请求体
                FileSystemResource fileSystemResource = new FileSystemResource(files);
                form.add("file", fileSystemResource);
                //form.add("bucketName", bucket);
            }
    
            //用HttpEntity封装整个请求报文
            HttpEntity<MultiValueMap<String, Object>> params = new HttpEntity<>(form, headers);
    
            //服务端返回的json格式："
            String result = restTemplate.postForObject(url, params, String.class);
            log.info("apiSendPostFileResult:{}", result);
            if (StringUtil.isEmptyAnything(result)) {
                return null;
            } else {
                try {
                    waterResult = JSONObject.parseObject(result, WaterResult.class);
                    if (waterResult != null) {
                        return waterResult;
                    }
                } catch (Exception e) {
                    log.error("转义失败！url:{}", StringUtil.getLog(e));
                }
            }
            return null;
    
        }