Question

我正尝试使用齐射将图像上传到服务器，我遵循了一些教程，但就我而言，我需要在发布请求的正文中传递多部分数据。

   private void uploadBitmap(final Bitmap bitmap) throws JSONException {

    //our custom volley request
    String URL = "https://<---------->/me/avatar";

    JSONObject jsonBody = new JSONObject();

    jsonBody.put("avatar", new VolleyMultipartRequest.DataPart( "index.png", getFileDataFromDrawable(bitmap)));
    final String requestBody = jsonBody.toString();
    VolleyMultipartRequest volleyMultipartRequest = new VolleyMultipartRequest(Request.Method.POST, URL,
            new Response.Listener<NetworkResponse>() {
                @Override
                public void onResponse(NetworkResponse response) {
                    loading.setVisibility(View.GONE);
                    Toast.makeText(ProfileSettings.this, "Image uploaded successfully", Toast.LENGTH_SHORT).show();
                    try {
                        JSONObject obj = new JSONObject(new String(response.data));

                    } catch (JSONException e) {
                        e.printStackTrace();
                    }
                }
            },
            new Response.ErrorListener() {
                @Override
                public void onErrorResponse(VolleyError error) {
                    loading.setVisibility(View.GONE);
                    Toast.makeText(getApplicationContext(), error.getMessage(), Toast.LENGTH_SHORT).show();
                }
            }) {


        @Override
        public Map<String, String> getHeaders() throws AuthFailureError {
            Map<String, String> params = new HashMap<String, String>();
            params.put("Content-Type", "application/json; charset=UTF-8");
            params.put("Authorization", "Bearer " + jsonToken);
            return params;
        }

        @Override
        protected Map<String, DataPart> getByteData() {
            Map<String, DataPart> params = new HashMap<>();
            long imagename = System.currentTimeMillis();
            params.put("avatar", new DataPart(imagename + ".png", getFileDataFromDrawable(bitmap)));
            return params;
        }

        @Override
        public byte[] getBody() throws AuthFailureError {
            return requestBody.getBytes();
        }
    };

    //adding the request to volley
    Volley.newRequestQueue(this).add(volleyMultipartRequest);
}

我从教程中获得了这段代码，但是它们给出了500错误，所以我想这可能是因为我需要在请求正文中传递“ avatar”：“ index.png”，而不是这种方式。

Answer 1

关注这些链接-https://www.simplifiedcoding.net/upload-image-to-server/ https://www.simplifiedcoding.net/android-upload-image-to-server/

，还使用该库上传图像和文件-https://github.com/gotev/android-upload-service。

请按照上面的教程介绍这些库。

Answer 2

我能够通过改装2实现这一点，这是代码。

@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    super.onActivityResult(requestCode, resultCode, data);
    if (requestCode == 100 && resultCode == RESULT_OK && data != null) {

        //getting the image Uri
        Uri imageUri = data.getData();
        try {
            //getting bitmap object from uri
            Bitmap bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), imageUri);

            //displaying selected image to imageview
            logo.setImageBitmap(bitmap);

            //calling the method uploadBitmap to upload image
            loading.setVisibility(View.VISIBLE);
            ///uploadBitmap(bitmap);

            File file = new File(getRealPathFromUri(this, imageUri));
            uploadImageFile(file);

        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}

public static String getRealPathFromUri(Context context, Uri contentUri) {
    Cursor cursor = null;
    try {
        String[] proj = { MediaStore.Images.Media.DATA };
        cursor = context.getContentResolver().query(contentUri, proj, null, null, null);
        int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
        cursor.moveToFirst();
        return cursor.getString(column_index);
    } finally {
        if (cursor != null) {
            cursor.close();
        }
    }
}

private void uploadImageFile(File file) throws IOException {

    file  = new Compressor(this).compressToFile(file);
    RequestBody requestFile = RequestBody.create(MediaType.parse("image/*"), file);
    // MultipartBody.Part is used to send also the actual filename
    MultipartBody.Part body = MultipartBody.Part.createFormData("avatar", file.getName(), requestFile);

    ApiConfig getResponse = AppConfig.getRetrofit().create(ApiConfig.class);
    Call<ServerResponse> call = getResponse.uploadFile("Bearer "+jsonToken, body);
    call.enqueue(new Callback< ServerResponse >() {
        @Override
        public void onResponse(@NonNull Call < ServerResponse > call, @NonNull retrofit2.Response<ServerResponse> response) {
            ServerResponse serverResponse = response.body();

            if (serverResponse.getData() != null) {
                Log.e(TAG, "Response is "+ serverResponse.getData());
               loading.setVisibility(View.GONE);
                Toast.makeText(ProfileSettings.this, "Avatar updated", Toast.LENGTH_SHORT).show();
            } else {
                Log.e("Response", String.valueOf(serverResponse));
            }
        }


        @Override
        public void onFailure(Call < ServerResponse > call, Throwable t) {
            Log.e(TAG, t.getMessage());
        }
    });
       // Log.e(TAG, "request is "+call.request().body()+" and "+call.request().headers());
    }

在请求请求的正文中使用带有多部分数据的齐射将图像上传到服务器

2 个答案: