OKHttp请求上传文件

Mark一下：

   @Override
    public void uploadSignPdfFile(File file) {

        RequestBody fileRQ = RequestBody.create(MediaType.parse("multipart/form-data"), file);
        RequestBody requestBody = new MultipartBody.Builder()
                .setType(MultipartBody.FORM)
                .addFormDataPart("file", file.getName(), fileRQ)
                .build();

        MultipartBody.Part part = MultipartBody.Part.create(requestBody);
        
        String url = mSpfUtils.getServerBaseUrl() + "/servlet/file.FileUpServlet";
        Request request= new Request.Builder()
                .url(url)
                .post(requestBody)
                .build();

        new OkHttpClient().newCall(request).enqueue(new Callback() {
            @Override
            public void onFailure(@NotNull Call call, @NotNull IOException e) {
                Log.d("上传图片失败", "onFailure: ");
            }

            @Override
            public void onResponse(@NotNull Call call, @NotNull Response response) throws IOException {
                try {
                    JSONObject obj = new JSONObject(response.body().string());
//                    JSONArray data = obj.getJSONArray("data");
//                    if (data!= null && data.length() > 0) {
//                        long fileid = data.getJSONObject(0).getLong("fileId");
//                        getView().callWebFileId(fileid);
//                        Looper.loop();
//                        getView().showToast("上传图片成功");
//                    }
                } catch (JSONException e) {
                    e.printStackTrace();
                }
            }
        });

    }