how to use HttpsUrlConnection in java

Question

I have a command line:

curl -u username:passwd -k "https://myserver/a/b/c"

It works and I will get right information when I call it under Ubuntu or Cygwin.

Now I am willing to accomplish it in Java. So I have Java code like that:

    public class Test {

    public static String auth = "username:passwd";
    public static String url = "https:/myserver/a/b/c";

    public static void main(String[] args) {
        try {
            URL url = new URL(url);
            final byte[] authBytes = auth.getBytes(StandardCharsets.UTF_8);
            String encoding = java.util.Base64.getEncoder().encodeToString(authBytes);
            HttpsURLConnection connection = (HttpsURLConnection) url.openConnection();

            connection.setRequestMethod("POST");

            connection.setRequestProperty("Authorization", encoding);

            BufferedReader in = new BufferedReader(new InputStreamReader(connection.getInputStream()));

            String line;

            while ((line = in.readLine()) != null) {
                System.out.println(line);
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}

But It seems not work and always return HTTP response code 411. Is there something wrong with the java code?

Thanks in advanced.

You're doing a POST but not sending anything. Is that what curl does? Otherwise you're comparing apples and oranges. — user207421
– user207421, Commented Dec 22, 2015 at 5:38

ketan · Accepted Answer · 2015-12-22 03:53:48Z

1

HTTP response code 411 means that "The server refuses to accept the request without a defined Content- Length."

http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html

HttpsUrlConnection should be able to do that for you. Check out setFixedLengthStreamingMode(). I think you will also need to setDoOutput().

edited Dec 22, 2015 at 3:53

ketan

19.4k42 gold badges68 silver badges107 bronze badges

answered Dec 22, 2015 at 3:49

dolan

1,81414 silver badges22 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

Dragon Over a year ago

Thank you very much. I am willing to add setDoOutput(true) and setFixedLengthStreamingMode (int contentLength) . But I don't know hot to set parameter contentLength. I gave it some random values and just got IOException: insufficient data written. I also tired setChunkedStreamingMode, but still cannot work.

user207421 Over a year ago

You have to set it to the length of the data you write, which is zero.

Collectives™ on Stack Overflow

how to use HttpsUrlConnection in java

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related