java - 使用 volley 将图像上传到服务器，并在发布请求正文中包含多部分数据

Question

我正在尝试使用 volley 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);
}

我从教程中得到了这段代码，但他们给出了 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"而不是这样。

Answer 1

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

还可以使用此库上传图像和文件 - https://github.com/gotev/android-upload-service .

请按照上面的教程介绍这些库。