How to transfer files from PC to Android devices

Question

how to open stream file from Http Request in browser and transfer from pc to android devices

public class WebServer extends Thread {
        private static final String SERVER_NAME = "AndWebServer";

        private static final String MESSAGE_PATTERN = "/message*";
       public WebServer(Context context, NotificationManager notifyManager){
                super(SERVER_NAME);

                this.setContext(context);
                this.setNotifyManager(notifyManager);

                SharedPreferences pref = PreferenceManager.getDefaultSharedPreferences(context);

                serverPort = Integer.parseInt(pref.getString(Constants.PREF_SERVER_PORT, "" + Constants.DEFAULT_SERVER_PORT));
                httpproc = new BasicHttpProcessor();
                httpContext = new BasicHttpContext();

        httpproc.addInterceptor(new ResponseDate());
        httpproc.addInterceptor(new ResponseServer());
        httpproc.addInterceptor(new ResponseContent());
        httpproc.addInterceptor(new ResponseConnControl());

        httpService = new HttpService(httpproc, 
                                                                                new DefaultConnectionReuseStrategy(),
                                                                                new DefaultHttpResponseFactory());


        registry = new HttpRequestHandlerRegistry();

        registry.register(MESSAGE_PATTERN, new MessageCommandHandler(context,  
        httpService.setHandlerResolver(registry);
        }

        @Override
        public void run() { ...   }

}


public MessageCommandHandler(Context context, NotificationManager notifyManager){
            this.context = context;
            this.notifyManager = notifyManager;


    @Override
    public void handle(HttpRequest request, HttpResponse response, HttpContext httpContext) throws HttpException, IOException {
            String uriString = request.getRequestLine().getUri();
            Uri uri = Uri.parse(uriString);
            String message = URLDecoder.decode(uri.getQueryParameter("msg"));
            // get open stearm file and save 
            AppLog.logString("Message URI: " + uriString);

            displayMessage(message);

            HttpEntity entity = new EntityTemplate(new ContentProducer() {....
            }
    });

            response.setHeader("Content-Type", "text/html");
            response.setEntity(entity);
    }

    protected void displayMessage(final String message) {

}

Please provide more details. Do you have an Android app? Where did HTML come from? Are you really running an HTTP server off an Android device? — Seva Alekseyev, Oct 24 '12 at 15:29
http://code.google.com/p/krvarma-android-samples/source/browse/trunk/aws/src/com/varma/android/aws/?r=80 I'm getting help from above . But I did not find anything about file transfer . — Ahmad Aghazadeh, Oct 24 '12 at 15:37
Can you please just answer my questions in 3-4 sentences? I don't feel like going through the whole project, and no one probably does. — Seva Alekseyev, Oct 24 '12 at 15:45

Seva Alekseyev · Accepted Answer · 2012-10-24T19:56:34.053

Looks like you have an Android-based Web server that accepts a form with a file field that's being posted from a desktop Web client.

First, change the form line to:

<form action="insert" enctype="multipart/form-data" method="post">

All guides out there say that you need a multipart form (as opposed to urlencoded) if you want to submit files; what would happen if don't specify enctype, I'm not sure; the browser might just quietly change the content type of the upload to multipart.

To retrieve the entity data from a HttpRequest object form, do the following:

Entity en = ((BasicHttpEntityEnclosingRequest)request).getEntity();
InputStream ins = en.getContent(); //Lets you read from the entity

The stream is not for the uploaded file - it's for the whole entity. It includes all form fields, of which the file is one.

Now the tricky part starts. Android does not have a built-in parser of multipart forms. There are some free open parsers out there, check out

http://www.servlets.com/cos/javadoc/com/oreilly/servlet/MultipartRequest.html

and also http://blog.kieranties.com/2012/03/multipart-form-posting-in-android.html

All else failing, you can write your own. But before you do, try integrating a ready made one.

How to transfer files from PC to Android devices

1 Answers1