Android httpPost with parameters and file

You have to use MultipartEntity. Find online and download those two libraries: httpmime-4.0.jar and apache-mime4j-0.4.jar and then you can attach as many stuff as desired. Here is example of how to use it:

HttpPost httpost = new HttpPost("URL_WHERE_TO_UPLOAD");MultipartEntity entity = new MultipartEntity();entity.addPart("myString", new StringBody("STRING_VALUE"));entity.addPart("myImageFile", new FileBody(imageFile));entity.addPart("myAudioFile", new FileBody(audioFile));httpost.setEntity(entity);HttpResponse response;response = httpclient.execute(httpost);

and for server side you can use these entity identifier names myImageFile, myString and myAudioFile.

You must use a multipart http post, like in HTML forms. This can be done with an extra library.See the post Sending images using Http Post for a complete example.

This works like charm for me:

public int uploadFile(String sourceFileUri) {      String fileName=sourceFileUri;    HttpURLConnection conn = null;    DataOutputStream dos = null;      String lineEnd = "\r\n";    String twoHyphens = "--";    String boundary = "------hellojosh";    int bytesRead, bytesAvailable, bufferSize;    byte[] buffer;    int maxBufferSize = 1 * 1024 * 1024;     File sourceFile = new File(fileName);     Log.e("joshtag", "Uploading: sourcefileURI, "+fileName);    if (!sourceFile.isFile()) {                                         Log.e("uploadFile", "Source File not exist :"+appSingleton.getInstance().photouri);//FullPath);                         runOnUiThread(new Runnable() {            public void run() {                             //messageText.setText("Source File not exist :"                }            });                   return 0;  //RETURN #1         }    else{        try{                             FileInputStream fileInputStream = new FileInputStream(sourceFile);                        URL url = new URL(upLoadServerUri);             Log.v("joshtag",url.toString());             // Open a HTTP  connection to  the URL             conn = (HttpURLConnection) url.openConnection();              conn.setDoInput(true); // Allow Inputs             conn.setDoOutput(true); // Allow Outputs             conn.setUseCaches(false); // Don't use a Cached Copy            s                    conn.setRequestMethod("POST");                                  conn.setRequestProperty("Connection", "Keep-Alive");             conn.setRequestProperty("ENCTYPE", "multipart/form-data");             conn.setRequestProperty("Content-Type", "multipart/form-data;boundary=" + boundary);                  conn.setRequestProperty("file", fileName);                                  conn.setRequestProperty("user", user_id));             dos = new DataOutputStream(conn.getOutputStream());               //ADD Some -F Form parameters, helping method             //... is declared down below             addFormField(dos, "someParameter", "someValue");             dos.writeBytes(twoHyphens + boundary + lineEnd);              dos.writeBytes("Content-Disposition: form-data; name=\"file\";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);                    Log.i("joshtag","->");                    }             // send multipart form data necesssary after file data...             dos.writeBytes(lineEnd);             dos.writeBytes(twoHyphens + boundary + twoHyphens + lineEnd);             // Responses from the server (code and message)             serverResponseCode = conn.getResponseCode();             String serverResponseMessage = conn.getResponseMessage().toString();                           Log.i("joshtag", "HTTP Response is : "  + serverResponseMessage + ": " + serverResponseCode);               // ------------------ read the SERVER RESPONSE             DataInputStream inStream;             try {                 inStream = new DataInputStream(conn.getInputStream());                 String str;                 while ((str = inStream.readLine()) != null) {                     Log.e("joshtag", "SOF Server Response" + str);                    }                 inStream.close();                }             catch (IOException ioex) {                Log.e("joshtag", "SOF error: " + ioex.getMessage(), ioex);                }             //close the streams //             fileInputStream.close();             dos.flush();             dos.close();                 if(serverResponseCode == 200){                 //Do something                                       }//END IF Response code 200              dialog.dismiss();            }//END TRY - FILE READ              catch (MalformedURLException ex) {            ex.printStackTrace();                 Log.e("joshtag", "UL error: " + ex.getMessage(), ex);              } //CATCH - URL Exception         catch (Exception e) {                       e.printStackTrace();                         Log.e("Upload file to server Exception", "Exception : "+ e.getMessage(), e);            } //        return serverResponseCode; //after try               }//END ELSE, if file exists.    }public static String lineEnd = "\r\n";public static String twoHyphens = "--";public static String boundary = "------------------------afb19f4aeefb356c";public static void addFormField(DataOutputStream dos, String parameter, String value){    try {        dos.writeBytes(twoHyphens + boundary + lineEnd);        dos.writeBytes("Content-Disposition: form-data; name=\""+parameter+"\"" + lineEnd);        dos.writeBytes(lineEnd);        dos.writeBytes(value);        dos.writeBytes(lineEnd);    }    catch(Exception e){    }}

UPDATE: If you need to send parameters along with the file, use:

conn.setRequestProperty("someParameter","someValue")//oraddFormField(DataOutputStream dos, String parameter, String value)

...as shown in the code above. One or the other should work, if the server you are trying to connect to is not completely known to you.