How to add parameters to restful request?

Question

I am using the following code to send a REST request, the request is failed (401 error) because it needs username and password.

how to add them to the url ? even when I copy the url in browser and add the username and password to the end of it the browser pop out the login page, so I suppose in the code I should add the username and password parameters but how ?

  URL url = new URL("www.example.com/user?ID=1234");
        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setDoOutput(true);
        conn.setRequestMethod("POST");
        conn.setRequestProperty("Content-Type", "application/json");
                if (conn.getResponseCode() != HttpURLConnection.HTTP_CREATED) {
            throw new RuntimeException("Failed : HTTP error code : "
                + conn.getResponseCode());
        }

I added the following to the code but still run into 401 error.

             conn.setRequestProperty("username", "myusername");
             conn.setRequestProperty("password", "mypassword");

[Check this out](http://stackoverflow.com/questions/9767952/how-to-add-parameters-to-httpurlconnection-using-post) — Rahul, Mar 22 '13 at 04:29

lichengwu · Answer 1 · 2013-03-22T05:12:56.847

1

Try this:

String params="username=myusername&password=mypassword";
conn.getOutputStream().write(params.getBytes());
conn.getOutputStream().flush();
conn.getOutputStream().close();

Or maybe you need encode the params:

DataOutputStream dos = new DataOutputStream(conn.getOutputStream());

String postContent = URLEncoder.encode("username", "UTF-8") + "=" + 
                     URLEncoder.encode(myusername, "UTF-8") + "&" + 
                     URLEncoder.encode("password", "UTF-8") + "=" + 
                     URLEncoder.encode(mypassword, "UTF-8") ;

dos.write(postContent.getBytes());
dos.flush();
dos.close();

About Basic Authorization

String userPassword = username + ":" + password;
String encoding = new sun.misc.BASE64Encoder().encode(userPassword.getBytes());
URLConnection uc = url.openConnection();
uc.setRequestProperty("Authorization", "Basic " + encoding);
uc.connect();

edited Mar 22 '13 at 05:12

answered Mar 22 '13 at 04:31

lichengwu

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thanks but it still runs into error 401, I double checked the username and password as well. – Daniel Morgan Mar 22 '13 at 04:41
@DanielMorgan The http 401 error code indicates that the request has failed to provided the proper authentication and has been denied site access. – lichengwu Mar 22 '13 at 04:49
@DanielMorgan maybe you can test url in broswer? – lichengwu Mar 22 '13 at 04:58
when I copy the same url in the browser it pops up a login window, then I can key in the same username and password as the code to retrieve the results. – Daniel Morgan Mar 22 '13 at 05:03
how to print the request ? – Daniel Morgan Mar 22 '13 at 05:07
@DanielMorgan add `Basic Authorization` – lichengwu Mar 22 '13 at 05:13

How to add parameters to restful request?

1 Answers1