How to use image / image to download in multipart / form-data format on Android

Question

This is my code.

I have Http 400 error, can someone help me?

HttpClient httpClient; HttpPost httpPost; HttpResponse response; HttpContext localContext; FileEntity tmp = null; String ret = null; httpClient = new DefaultHttpClient( ); httpClient.getParams().setParameter( ClientPNames.COOKIE_POLICY, CookiePolicy.RFC_2109) ; httpPost = new HttpPost(url); tmp = new FileEntity( data,"UTF-8" ); httpPost.setEntity( tmp ); httpPost.setHeader( "Content-Type", "multipart/form-data" ); httpPost.setHeader( "access_token", facebook.getAccessToken( ) ); httpPost.setHeader( "source", data.getAbsolutePath( ) ); httpPost.setHeader( "message", "Caption for the photo" ); localContext = new BasicHttpContext( ); response = httpClient.execute( httpPost,localContext ); 

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bobince, thanks, that is my new identifier, I will try to put OAuth in the connection header.

And this is my old code, I will update it soon.

 private void uploadPicture( ) throws ParseException, IOException { HttpClient httpclient = new DefaultHttpClient(); httpclient.getParams( ).setParameter( CoreProtocolPNames.PROTOCOL_VERSION, HttpVersion.HTTP_1_1 ); HttpPost httppost = new HttpPost( "https://graph.facebook.com/me/photos" ); File file = new File( sdpicturePath ); // DEBUG Log.d( "TSET", "FILE::" + file.exists( ) ); // IT IS NOT NULL Log.d( "TEST", "AT:" + fbAccessToken ); // I GOT SOME ACCESS TOKEN MultipartEntity mpEntity = new MultipartEntity( ); ContentBody cbFile = new FileBody( file, "image/png" ); ContentBody cbMessage = new StringBody( "TEST TSET" ); ContentBody cbAccessToken = new StringBody( fbAccessToken ); mpEntity.addPart( "access_token", cbAccessToken ); mpEntity.addPart( "source", cbFile ); mpEntity.addPart( "message", cbMessage ); httppost.setEntity( mpEntity ); // DEBUG System.out.println( "executing request " + httppost.getRequestLine( ) ); HttpResponse response = httpclient.execute( httppost ); HttpEntity resEntity = response.getEntity( ); // DEBUG System.out.println( response.getStatusLine( ) ); if (resEntity != null) { System.out.println( EntityUtils.toString( resEntity ) ); } // end if if (resEntity != null) { resEntity.consumeContent( ); } // end if httpclient.getConnectionManager( ).shutdown( ); } // end of uploadPicture( ) 

Answer 1

setEntity sets the source of the entire request body, so this will only work if the data file was already encoded with the multipart/form-data block.

To create a multipart/form-data -encoded form request for use as the body of a POST request, you will need a MIME multiplexer, usually org.apache.http.entity.mime.MultipartEntity . Unfortunately, this is not Android related, so if you want to, you have to pull the new HttpClient from Apache.

See this question for example code and this thread for background.

Answer 2

There is my working solution for sending an image with a message using apache http libraries:

  ByteArrayOutputStream baos = new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.PNG, 100, baos); byte[] imageBytes = baos.toByteArray(); HttpClient httpclient = new DefaultHttpClient(); HttpPost httpPost = new HttpPost(StaticData.AMBAJE_SERVER_URL + StaticData.AMBAJE_ADD_AMBAJ_TO_GROUP); String boundary = "-------------" + System.currentTimeMillis(); httpPost.setHeader("Content-type", "multipart/form-data; boundary="+boundary); ByteArrayBody bab = new ByteArrayBody(imageBytes, "pic.png"); StringBody sbOwner = new StringBody(StaticData.loggedUserId, ContentType.TEXT_PLAIN); StringBody sbGroup = new StringBody("group", ContentType.TEXT_PLAIN); HttpEntity entity = MultipartEntityBuilder.create() .setMode(HttpMultipartMode.BROWSER_COMPATIBLE) .setBoundary(boundary) .addPart("group", sbGroup) .addPart("owner", sbOwner) .addPart("image", bab) .build(); httpPost.setEntity(entity); try { HttpResponse response = httpclient.execute(httpPost); ...then reading response 

Answer 3

As for the facebook api chart, this code works fine. however, sometimes you need to use a name instead of a file_name . The api chart seems to conflict with the rfc document.

 final String BOUNDERY = "3i2ndDfv2rTHiSisAbouNdArYfORhtTPEefj3q2f"; final String CRLF = "\r\n"; StringBuilder sbBody_1 = new StringBuilder(); sbBody_1.append("--" + BOUNDERY + CRLF); sbBody_1.append("Content-Disposition: form-data; filename=\"source\"" + CRLF); sbBody_1.append(CRLF); StringBuilder sbBody_2 = new StringBuilder(); sbBody_2.append(CRLF + "--" + BOUNDERY + "--"); URL url = new URL("https://graph.facebook.com/me/photos?access_token=" + accessToken); HttpURLConnection connection = (HttpURLConnection) url.openConnection(); connection.setDoOutput(true); connection.setRequestMethod("POST"); connection.setRequestProperty("Content-Type", "multipart/form-data; boundary=" + BOUNDERY); connection.setChunkedStreamingMode(0); OutputStream out = new BufferedOutputStream(connection.getOutputStream()); out.write(sbBody_1.toString().getBytes()); out.write(bFile);// bFile is byte array of the bitmap out.write(sbBody_2.toString().getBytes()); out.close(); BufferedReader bips = new BufferedReader(new InputStreamReader(connection.getInputStream())); String temp = null; while ((temp = bips.readLine()) != null) { Log.d("fbnb", temp); } bips.close(); connection.disconnect();