How to sending byte HTTP using NameValuePair?

Question

I want to send a couple of values to a web server from my Android Client using this NameValuePair method:

public void postData() { // Create a new HttpClient and Post Header HttpClient httpclient = new DefaultHttpClient(); HttpPost httppost = new HttpPost("http:/xxxxxxx"); try { // Add your data List<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(1); String amount = paymentAmount.getText().toString(); String email = inputEmail.getText().toString(); nameValuePairs.add(new BasicNameValuePair("donationAmount", amount)); nameValuePairs.add(new BasicNameValuePair("email", email)); nameValuePairs.add(new BasicNameValuePair("paymentMethod", "5")); httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); // Execute HTTP Post Request HttpResponse response = httpclient.execute(httppost); } catch (ClientProtocolException e) { // TODO Auto-generated catch block } catch (IOException e) { // TODO Auto-generated catch block } }

Unfortunately NameValuePair is only able to send String, I need to send byte[] values as well. Can anybody help me to solve my problem?

encode byte[] to Base64 String or use other HttpEntity for example MultipartEntity(3rd party lib is needed ... just google it) — Selvin
– Selvin, Commented Feb 9, 2012 at 13:59
when i have send Base64 string how to handle in webservice.i have used asmx using vb.net — Selva
– Selva, Commented Feb 9, 2012 at 14:03

jsaye · Accepted Answer · 2012-02-09 15:18:27Z

 HttpPost httppost = new HttpPost("http://upload-test.php"); MultipartEntity entity = new MultipartEntity(HttpMultipartMode.BROWSER_COMPATIBLE); HttpClient httpClient = new DefaultHttpClient(); if(bm!=null){ ByteArrayOutputStream bos = new ByteArrayOutputStream(); bm.compress(CompressFormat.JPEG, 75, bos); byte[] data = bos.toByteArray(); ByteArrayBody bab = new ByteArrayBody(data, name+".jpg"); entity.addPart("file", bab); } try { StringBody sname = new StringBody(name); entity.addPart("name", sname); } catch (UnsupportedEncodingException e1) { // TODO Auto-generated catch block e1.printStackTrace(); } httppost.setEntity(entity); try { httpClient.execute(httppost); } catch (ClientProtocolException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); }

In this example im posting an Image(jpg) and String you can download the multipart post library here: http://hc.apache.org/downloads.cgi bm is a Bitmap. You can use also:

Bundle bundle=new Bundle(); bundle.putString("key", "value"); byte[] b = bundle.getByteArray("key"); ByteArrayBody bab = new ByteArrayBody(b,"info");

Vinh Luffy · Accepted Answer · 2013-04-18 04:07:16Z

Encode bytes to String : String ba1 = Base64.encodeBytes(ba);

 Bitmap bitmapOrg = BitmapFactory.decodeFile(sdPath); ByteArrayOutputStream bao = new ByteArrayOutputStream(); //Resize the image double width = bitmapOrg.getWidth(); double height = bitmapOrg.getHeight(); double ratio = 400/width; int newheight = (int)(ratio * height); System.out.println("———-width" + width); System.out.println("———-height" + height); bitmapOrg = Bitmap.createScaledBitmap(bitmapOrg, 400, newheight, true); //Here you can define .PNG as well bitmapOrg.compress(Bitmap.CompressFormat.JPEG, 95, bao); byte[] ba = bao.toByteArray(); String ba1 = Base64.encodeBytes(ba); System.out.println("uploading image now ---" + ba1); String a = "aaaaa"; ArrayList<NameValuePair> nameValuePairs = new ArrayList<NameValuePair>(); nameValuePairs.add(new BasicNameValuePair("image", ba1)); nameValuePairs.add(new BasicNameValuePair("a", a)); try{ HttpClient httpclient = new DefaultHttpClient(); HttpPost httppost = new HttpPost("http://10.0.2.2:8080/upload_test/upload_image.php"); httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs)); HttpResponse response = httpclient.execute(httppost); HttpEntity entity = response.getEntity(); // print responce outPut = EntityUtils.toString(entity); Log.i("GET RESPONSE—-", outPut); //is = entity.getContent(); Log.e("log_tag ******", "good connection"); bitmapOrg.recycle(); }catch (Exception e) { Log.e("log_tag ******", "Error in http connection " + e.toString()); }

this would require a change server side. Not suitable for me.

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