Re: Ploblem doing HTTP POST via URLConnection

From:

Lothar Kimmeringer <news200709@kimmeringer.de>

Newsgroups:

comp.lang.java.programmer

Date:

Tue, 9 Feb 2010 18:30:11 +0100

Message-ID:

<1c90q9eti4w14$.dlg@kimmeringer.de>

M?rio wrote:

I am trying to post an object to a servlet via HTTP using the
following code,
but unfortunately, nothing is sent to the server:

    private static void doJavaPost() throws IOException {
        URL url = new URL("http://localhost:9999/myservlet");
        URLConnection connection = url.openConnection();
        connection.setDoOutput(true);
        ByteArrayOutputStream data = new ByteArrayOutputStream();
        ObjectOutputStream out = new ObjectOutputStream(data);
        out.writeObject(new Date());
        out.close();
        OutputStream os = connection.getOutputStream();
        data.writeTo(os);
        os.flush();
        os.close();
        }

Does someone know why this does not generate a POST request?

Because you don't ask the connection to do that. Call
connection.getInputStream() and the request will be sent.
BTW: You can skip the writing to the ByteArrayOutputStream
and initialized the ObjectOutputStream with
connection.getOutputStream()
Calling of os.close() isn't needed, either.

Regards, Lothar
--
Lothar Kimmeringer E-Mail: spamfang@kimmeringer.de
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