How to Send a File in Android from a Mobile Device to Server Using Http

How do I send a file in Android from a mobile device to server using http?

Easy, you can use a Post request and submit your file as binary (byte array).

String url = "http://yourserver";
File file = new File(Environment.getExternalStorageDirectory().getAbsolutePath(),
        "yourfile");
try {
    HttpClient httpclient = new DefaultHttpClient();

    HttpPost httppost = new HttpPost(url);

    InputStreamEntity reqEntity = new InputStreamEntity(
            new FileInputStream(file), -1);
    reqEntity.setContentType("binary/octet-stream");
    reqEntity.setChunked(true); // Send in multiple parts if needed
    httppost.setEntity(reqEntity);
    HttpResponse response = httpclient.execute(httppost);
    //Do something with response...

} catch (Exception e) {
    // show error
}

send files(images) from android device to webservice on the server written using REST

Check the link . it gives complete example of how to upload file to server.

or check below code -

public class HttpFileUpload implements Runnable{
    URL connectURL;
    String responseString;
    String Title;
    String Description;
    byte[ ] dataToServer;
    FileInputStream fileInputStream = null;

    HttpFileUpload(String urlString, String vTitle, String vDesc){
            try{
                    connectURL = new URL(urlString);
                    Title= vTitle;
                    Description = vDesc;
            }catch(Exception ex){
                Log.i("HttpFileUpload","URL Malformatted");
            }
    }

    void Send_Now(FileInputStream fStream){
            fileInputStream = fStream;
            Sending();
    }

    void Sending(){
            String iFileName = "ovicam_temp_vid.mp4";
            String lineEnd = "\r\n";
            String twoHyphens = "--";
            String boundary = "*****";
            String Tag="fSnd";
            try
            {
                    Log.e(Tag,"Starting Http File Sending to URL");

                    // Open a HTTP connection to the URL
                    HttpURLConnection conn = (HttpURLConnection)connectURL.openConnection();

                    // Allow Inputs
                    conn.setDoInput(true);

                    // Allow Outputs
                    conn.setDoOutput(true);

                    // Don't use a cached copy.
                    conn.setUseCaches(false);

                    // Use a post method.
                    conn.setRequestMethod("POST");

                    conn.setRequestProperty("Connection", "Keep-Alive");

                    conn.setRequestProperty("Content-Type", "multipart/form-data;boundary="+boundary);

                    DataOutputStream dos = new DataOutputStream(conn.getOutputStream());

                    dos.writeBytes(twoHyphens + boundary + lineEnd);
                    dos.writeBytes("Content-Disposition: form-data; name=\"title\""+ lineEnd);
                    dos.writeBytes(lineEnd);
                    dos.writeBytes(Title);
                    dos.writeBytes(lineEnd);
                    dos.writeBytes(twoHyphens + boundary + lineEnd);

                    dos.writeBytes("Content-Disposition: form-data; name=\"description\""+ lineEnd);
                    dos.writeBytes(lineEnd);
                    dos.writeBytes(Description);
                    dos.writeBytes(lineEnd);
                    dos.writeBytes(twoHyphens + boundary + lineEnd);

                    dos.writeBytes("Content-Disposition: form-data; name=\"uploadedfile\";filename=\"" + iFileName +"\"" + lineEnd);
                    dos.writeBytes(lineEnd);

                    Log.e(Tag,"Headers are written");

                    // create a buffer of maximum size
                    int bytesAvailable = fileInputStream.available();

                    int maxBufferSize = 1024;
                    int bufferSize = Math.min(bytesAvailable, maxBufferSize);
                    byte[ ] buffer = new byte[bufferSize];

                    // read file and write it into form...
                    int bytesRead = fileInputStream.read(buffer, 0, bufferSize);

                    while (bytesRead > 0)
                    {
                            dos.write(buffer, 0, bufferSize);
                            bytesAvailable = fileInputStream.available();
                            bufferSize = Math.min(bytesAvailable,maxBufferSize);
                            bytesRead = fileInputStream.read(buffer, 0,bufferSize);
                    }
                    dos.writeBytes(lineEnd);
                    dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);

                    // close streams
                    fileInputStream.close();

                    dos.flush();

                    Log.e(Tag,"File Sent, Response: "+String.valueOf(conn.getResponseCode()));

                    InputStream is = conn.getInputStream();

                    // retrieve the response from server
                    int ch;

                    StringBuffer b =new StringBuffer();
                    while( ( ch = is.read() ) != -1 ){ b.append( (char)ch ); }
                    String s=b.toString();
                    Log.i("Response",s);
                    dos.close();
            }
            catch (MalformedURLException ex)
            {
                    Log.e(Tag, "URL error: " + ex.getMessage(), ex);
            }

            catch (IOException ioe)
            {
                    Log.e(Tag, "IO error: " + ioe.getMessage(), ioe);
            }
    }

    @Override
    public void run() {
            // TODO Auto-generated method stub
    }
  }

public void UploadFile(){
  try {
  // Set your file path here
  FileInputStream fstrm = new FileInputStream(Environment.getExternalStorageDirectory().toString()+"/DCIM/file.mp4");

 // Set your server page url (and the file title/description)
 HttpFileUpload hfu = new HttpFileUpload("http://www.myurl.com/fileup.aspx", "my file title","my file description");

 hfu.Send_Now(fstrm);

  } catch (FileNotFoundException e) {
    // Error: File not found
 }
 }

Uploading file to a REST api server using Android HTTP client

try this out

    public static JSONObject postFile(String url,String filePath,int id){
    String result="";
    HttpClient httpClient = new DefaultHttpClient();
    HttpPost httpPost = new HttpPost(url);
    File file = new File(filePath);
    MultipartEntity mpEntity = new MultipartEntity();
    ContentBody cbFile = new FileBody(file, "image/jpeg");
    StringBody stringBody= null;
    JSONObject responseObject=null;
    try {
        stringBody = new StringBody(id+"");
        mpEntity.addPart("file", cbFile);
        mpEntity.addPart("id",stringBody);
        httpPost.setEntity(mpEntity);
        System.out.println("executing request " + httpPost.getRequestLine());
        HttpResponse response = httpClient.execute(httpPost);
        HttpEntity resEntity = response.getEntity();
        result=resEntity.toString();
        responseObject=new JSONObject(result);
    } catch (UnsupportedEncodingException e) {
        e.printStackTrace();
    } catch (ClientProtocolException e) {
        e.printStackTrace();
    } catch (IOException e) {
        e.printStackTrace();
    } catch (JSONException e) {
        e.printStackTrace();
    }
    return responseObject;
}

this code works perfectly, use this and if you find any difficulty, do comment.

 Happy coding!!

Sending files using POST with HttpURLConnection

I have no idea why the HttpURLConnection class does not provide any means to send files without having to compose the file wrapper manually. Here's what I ended up doing, but if someone knows a better solution, please let me know.

Input data:

Bitmap bitmap = myView.getBitmap();

Static stuff:

String attachmentName = "bitmap";
String attachmentFileName = "bitmap.bmp";
String crlf = "\r\n";
String twoHyphens = "--";
String boundary =  "*****";

Setup the request:

HttpURLConnection httpUrlConnection = null;
URL url = new URL("http://example.com/server.cgi");
httpUrlConnection = (HttpURLConnection) url.openConnection();
httpUrlConnection.setUseCaches(false);
httpUrlConnection.setDoOutput(true);

httpUrlConnection.setRequestMethod("POST");
httpUrlConnection.setRequestProperty("Connection", "Keep-Alive");
httpUrlConnection.setRequestProperty("Cache-Control", "no-cache");
httpUrlConnection.setRequestProperty(
    "Content-Type", "multipart/form-data;boundary=" + this.boundary);

Start content wrapper:

DataOutputStream request = new DataOutputStream(
    httpUrlConnection.getOutputStream());

request.writeBytes(this.twoHyphens + this.boundary + this.crlf);
request.writeBytes("Content-Disposition: form-data; name=\"" +
    this.attachmentName + "\";filename=\"" + 
    this.attachmentFileName + "\"" + this.crlf);
request.writeBytes(this.crlf);

Convert Bitmap to ByteBuffer:

//I want to send only 8 bit black & white bitmaps
byte[] pixels = new byte[bitmap.getWidth() * bitmap.getHeight()];
for (int i = 0; i < bitmap.getWidth(); ++i) {
    for (int j = 0; j < bitmap.getHeight(); ++j) {
        //we're interested only in the MSB of the first byte, 
        //since the other 3 bytes are identical for B&W images
        pixels[i + j] = (byte) ((bitmap.getPixel(i, j) & 0x80) >> 7);
    }
}

request.write(pixels);

End content wrapper:

request.writeBytes(this.crlf);
request.writeBytes(this.twoHyphens + this.boundary + 
    this.twoHyphens + this.crlf);

Flush output buffer:

request.flush();
request.close();

Get response:

InputStream responseStream = new 
    BufferedInputStream(httpUrlConnection.getInputStream());

BufferedReader responseStreamReader = 
    new BufferedReader(new InputStreamReader(responseStream));

String line = "";
StringBuilder stringBuilder = new StringBuilder();

while ((line = responseStreamReader.readLine()) != null) {
    stringBuilder.append(line).append("\n");
}
responseStreamReader.close();

String response = stringBuilder.toString();

Close response stream:

responseStream.close();

Close the connection:

httpUrlConnection.disconnect();

PS: Of course I had to wrap the request in private class AsyncUploadBitmaps extends AsyncTask<Bitmap, Void, String>, in order to make the Android platform happy, because it doesn't like to have network requests on the main thread.

How to post data to my web server using mobile SMS without internet?

I found a solution to my problem. The internet connectivity problem can be solved in the following way.

When internet is not available on your user's device, send an SMS which contains location coordinates and user name to a second mobile device in which internet is available. Then that second device will parse the incoming SMS, extract coordinates and username and will send it to the server.

Upload file from Android application to Symfony2 application through JSON

Please take a look at this question How can I add an image file into json object?

When handling the JSON, you can store the file in your DB as BLOB or do something else in your Symfony application.

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