String fileName = tvFilename.getText().toString();
 RequestBody description =
  RequestBody.create(
   okhttp3.MultipartBody.FORM, fileName);

 File fileImage = new File(saveFileName);
 RequestBody requestBody1 =
  RequestBody.create(MediaType.parse("multipart/form-data"), fileImage);
 MultipartBody.Part body =
  MultipartBody.Part.createFormData("bannerImage", fileImage.getName(), requestBody1);


 RestClient.api().addLive(description, body)
 .enqueue(new retrofit2.Callback() {
  @Override
  public void onResponse(retrofit2.Call call, retrofit2.Response response) {
  "处理成功"
  }

  @Override
  public void onFailure(retrofit2.Call call, Throwable t) {
  "处理失败"
  }
 });

@Multipart
 @POST("add/live")
 Call addLive(
  @Part("fileName")RequestBody fileName,//其他字段
  @Part MultipartBody.Part bannerImage);//图片

@RequestMapping(value = "/add/live", method = RequestMethod.POST)
 @ResponseBody
 public ResponseInfo addLive(
  @RequestParam(value = "fileName") String fileName,
  @RequestParam(value = "bannerImage") MultipartFile bannerImage
 )throws Exception {
 String logoPath = "/logo/score/";
 try {
  File file = new File(imagePath + logoPath);
  FileUtils.writeByteArrayToFile(file, bannerImage.getBytes());

 } catch (Exception e) {
  e.printStackTrace();
 }
 return new ResponseInfo(T1TConstants.SUCCESS, "成功");
 }