我正在嘗試使用截擊將圖像上傳到服務器，我遵循了一些教程，但就我而言，我需要在發布請求的正文中傳遞多部分數據。 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; }我從教程中獲得了這段代碼，但他們給出了 500 錯誤，所以我猜這可能是因為我需要在請求正文中傳遞“avatar”：“index.png”而不是這種方式。
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我能夠使用改造 2 實現此目的，這是代碼。
@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());
}
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