Image Upload in Android

Question

How can i upload an Image in Android using node.js web services using base64 ?

Manikandan Murugesan · Answer

You should to find where error occurs: before writeFile call or before middleware call. Also it's good to enhance your question with detailes: what actually happens and where process fails, does it create file or not, etc. There could be several issues: Body is too big (100K for body-parser if I'm right). Body is corrupted (use md5 hash to ensure) and also Refer this Link : https://stackoverflow.com/questions/26360403/uploading-a-base64-encoded-image-to-node-js-server-not-working

Rajkiran Swain · Answer

Android client code (not tested!): public static void postData(Bitmap imageToSend) { try { URL url = new URL( "http://myserver/myapp/upload-image" ); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod( "POST" ); conn.setDoInput( true ); conn.setDoOutput( true ); conn.setRequestProperty( "Connection" , "Keep-Alive" ); conn.setRequestProperty( "Cache-Control" , "no-cache" ); conn.setReadTimeout(35000); conn.setConnectTimeout(35000); // directly let .compress write binary image data // to the output-stream OutputStream os = conn.getOutputStream(); imageToSend.compress(Bitmap.CompressFormat.JPEG, 100, os); os.flush(); os.close(); System. out .println( "Response Code: " + conn.getResponseCode()); InputStream in = new BufferedInputStream(conn.getInputStream()); Log.d( "sdfs" , "sfsd" ); BufferedReader responseStreamReader = new BufferedReader( new InputStreamReader( in )); String line = "" ; StringBuilder stringBuilder = new StringBuilder(); while ((line = responseStreamReader.readLine()) != null ) stringBuilder.append(line).append( "
" ); responseStreamReader.close(); String response = stringBuilder.toString(); System. out .println(response); conn.disconnect(); } catch (MalformedURLException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } Node.js, Express code: function rawBody(req, res, next) { var chunks = []; req.on( 'data' , function(chunk) { chunks.push(chunk); }); req.on( 'end' , function() { var buffer = Buffer.concat(chunks); req.bodyLength = buffer.length; req.rawBody = buffer; next(); }); req.on( 'error' , function (err) { console.log(err); res.status(500); }); } app.post( '/upload-image' , rawBody, function (req, res) { if (req.rawBody && req.bodyLength > 0) { // TODO save image (req.rawBody) somewhere // send some content as JSON res.send(200, {status: 'OK' }); } else { res.send(500); } });

Sundaram Subramanian · Answer

Andriod Code public static void postData(Bitmap imageToSend) { try { URL url = new URL("http://myserver/myapp/upload-image"); HttpURLConnection conn = (HttpURLConnection) url.openConnection(); conn.setRequestMethod("POST"); conn.setDoInput(true); conn.setDoOutput(true); conn.setRequestProperty("Connection", "Keep-Alive"); conn.setRequestProperty("Cache-Control", "no-cache"); conn.setReadTimeout(35000); conn.setConnectTimeout(35000); // directly let .compress write binary image data // to the output-stream OutputStream os = conn.getOutputStream(); imageToSend.compress(Bitmap.CompressFormat.JPEG, 100, os); os.flush(); os.close(); System.out.println("Response Code: " + conn.getResponseCode()); InputStream in = new BufferedInputStream(conn.getInputStream()); Log.d("sdfs", "sfsd"); BufferedReader responseStreamReader = new BufferedReader(new InputStreamReader(in)); String line = ""; StringBuilder stringBuilder = new StringBuilder(); while ((line = responseStreamReader.readLine()) != null) stringBuilder.append(line).append("
"); responseStreamReader.close(); String response = stringBuilder.toString(); System.out.println(response); conn.disconnect(); } catch(MalformedURLException e) { e.printStackTrace(); } catch(IOException e) { e.printStackTrace(); } } NodeJS Code function rawBody(req, res, next) { var chunks = []; req.on('data', function(chunk) { chunks.push(chunk); }); req.on('end', function() { var buffer = Buffer.concat(chunks); req.bodyLength = buffer.length; req.rawBody = buffer; next(); }); req.on('error', function (err) { console.log(err); res.status(500); }); } app.post('/upload-image', rawBody, function (req, res) { if (req.rawBody && req.bodyLength > 0) { // TODO save image (req.rawBody) somewhere // send some content as JSON res.send(200, {status: 'OK'}); } else { res.send(500); } });

Abhilash J A · Answer

You can search on google: 'upload image android node.js web services base64' I got some solution: https://stackoverflow.com/questions/39532941/how-to-upload-imagebase64-string-to-the-server-from-android-with-nodejs-as-a-b https://stackoverflow.com/questions/31264619/how-to-send-an-image-from-android-client-to-node-js-server-via-httpurlconnection