How do I set the body of a HttpPut on Android? (without adding libraries)

Question

I want to upload some data from an Android application to Pachube.

[Update: For people reading this in 2013, "Pachube" became "Cosm", which is now "Xively".]

This hurl is provided by their documentation as an example.

How can I achieve this with Android's implementation of HttpPut (or HttpPost)?

I don't really want to have to add any extra libraries, as I want to keep the application as small as possible.

I already have a JSONObject with my data in it.

Answer 1

Here is some pseudocode. Note that you shouldn't send form url encoded data in a PUT request, as it may break server side OAuth (if being used):

HttpClient client = new DefaultHttpClient();
HttpPut put = new HttpPut(url);
put.addHeader("Content-Type", "application/json");
put.addHeader("Accept", "application/json");
put.setEntity(new StringEntity(jsonObj.writeValue()));
HttpResponse response = client.execute(put);

Answer 2

One way to do this in Java / Android without any additional libraries is:

URL url = new URL("http://www.example.com/whatever");
HttpURLConnection httpCon = (HttpURLConnection) url.openConnection();
httpCon.setDoOutput(true);
httpCon.setRequestMethod("PUT");
OutputStreamWriter out = new OutputStreamWriter(httpCon.getOutputStream());
out.write("Data you want to put"); // for example your JSON object
out.close();

UPDATE - as per comments:

you can get the response for example by calling httpCon.getInputStream() and/or httpCon.getErrorStream() etc.