CodeseniorSoftware Tutorials

You can use following codes to upload files with extra parameters in Android app:

public String uploadFile(String uri, String fileName) throws Exception {
    String lineEnd = "\r\n";
    String twoHyphens = "--";
    String boundary = "*****";
    int bytesRead, bytesAvailable, bufferSize;
    byte[] buffer;
    int maxBufferSize = 1 * 1024 * 1024;
    FileInputStream fileInputStream = context.openFileInput(fileName);
    URL url = new URL(uri);
    
    // Open a HTTP  connection to  the URL
    HttpURLConnection conn = (HttpURLConnection) url.openConnection();
    
    conn.setDoInput(true); // Allow Inputs
    conn.setDoOutput(true); // Allow Outputs
    conn.setUseCaches(false); // Don't use a Cached Copy
    conn.setRequestMethod("POST");
    conn.setRequestProperty("Content-Encoding", "gzip");
    conn.setRequestProperty("Connection", "Keep-Alive");
    //conn.setRequestProperty("Content-Type", "text/html; charset=UTF-8");
    conn.setRequestProperty("Content-Type","multipart/form-data;boundary=" + boundary);
    conn.setRequestProperty("appbundle_product[playlist]", fileName);
    DataOutputStream dos = new DataOutputStream(conn.getOutputStream());
    
    dos.writeBytes(twoHyphens + boundary + lineEnd);
    String id=params.get("appbundle_product[id]").toString();
    dos.writeBytes("Content-Disposition: form-data; name=\"appbundle_product[id]\"" + lineEnd);
    //dos.writeBytes("Content-Type: text/plain; charset=UTF-8" + lineEnd);
    //dos.writeBytes("Content-Length: " + name.length() + lineEnd);
    dos.writeBytes(lineEnd);
    dos.writeBytes(id); // mobile_no is String variable
    dos.writeBytes(lineEnd);
    
    dos.writeBytes(twoHyphens + boundary + lineEnd);
    String playlistType=params.get("appbundle_product[playlist_type]").toString();
    dos.writeBytes("Content-Disposition: form-data; name=\"appbundle_product[playlist_type]\"" + lineEnd);
    //dos.writeBytes("Content-Type: text/plain; charset=UTF-8" + lineEnd);
    //dos.writeBytes("Content-Length: " + name.length() + lineEnd);
    dos.writeBytes(lineEnd);
    dos.writeBytes(playlistType); // mobile_no is String variable
    dos.writeBytes(lineEnd);
    
    dos.writeBytes(twoHyphens + boundary + lineEnd);
    String macValue=params.get("appbundle_product[mac_value]").toString();
    dos.writeBytes("Content-Disposition: form-data; name=\"appbundle_product[mac_value]\"" + lineEnd);
    //dos.writeBytes("Content-Type: text/plain; charset=UTF-8" + lineEnd);
    //dos.writeBytes("Content-Length: " + name.length() + lineEnd);
    dos.writeBytes(lineEnd);
    dos.writeBytes(macValue); // mobile_no is String variable
    dos.writeBytes(lineEnd);
    
    dos.writeBytes(twoHyphens + boundary + lineEnd);
    dos.writeBytes("Content-Disposition: form-data; name=appbundle_product[playlist];filename="
    + fileName + "" + lineEnd);
    dos.writeBytes(lineEnd);
    
    // create a buffer of  maximum size
    bytesAvailable = fileInputStream.available();
    
    bufferSize = Math.min(bytesAvailable, maxBufferSize);
    buffer = new byte[bufferSize];
    
    // read file and write it into form...
    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);
    }
    // send multipart form data necesssary after file data...
    dos.writeBytes(lineEnd);
    dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);
    
    // Responses from the server (code and message)
    int serverResponseCode = conn.getResponseCode();
    String serverResponseMessage = conn.getResponseMessage();
    //close the streams //
    BufferedReader br = new BufferedReader(new InputStreamReader((conn.getInputStream())));
    StringBuilder sb = new StringBuilder();
    String line;
    while ((line = br.readLine()) != null) {
        sb.append(line).append("\n");
    }
    
    fileInputStream.close();
    dos.flush();
    dos.close();
    return sb.toString();
}

Usage

private class UploadFileTask extends AsyncTask {
    
    @Override
    protected Object doInBackground(Object[] params) {
     
        String result = null;
        try {
            result = uploadFile(getString(R.string.upload_playlist_request),"test.txt");
            return result;
        } catch (Exception e) {
            return e.getMessage();
        }
    }
}