URLConnection 422 Http Error response

[Mano Krrish]

Hi all,

I have a JSON feed which I am trying to call using URLConnection. I requested the feed with authentication parameters(UserName & Password) and got the cookies of the call, then tried to request the server with cookies, for the feed data, but I received a 422 Http Error response. Could any one please help us on this and correct me if I am wrong in any other aspect of using the Connection too.

Thanks in advance!!

I have given below the error console and the code snippet I am using for this:

public static void main(String[] arg)
	{
		try
		{
		URL url = new URL("/data_collectors/3/track.json");
		HttpsURLConnection urlConn = (HttpsURLConnection)url.openConnection();
		urlConn.setDoInput(true);
		urlConn.setDoOutput(true);
		urlConn.setUseCaches(true);

		printout = new DataOutputStream (urlConn.getOutputStream ());
		String content = "USERNAME=" + URLEncoder.encode (userName) + "&PASSWORD=" + URLEncoder.encode (password);
		System.out.println("CIMING AFTER READ -1");
		printout.writeBytes (content);
		printout.flush ();
		printout.close ();
		
	

		Map<String, List<String>> headers = urlConn.getHeaderFields();
		List<String> values = headers.get("Set-Cookie");
		String cookieValue = null;
		for (Iterator iter = values.iterator(); iter.hasNext(); )
		{
		     String v = (String)iter.next();
		     System.out.println("cookie: "+v);
		    if (cookieValue == null)
		        cookieValue = v;
		    else
		    {
		         cookieValue = cookieValue + ";" + v;
			}


		}


		URL url2 = new URL("data_collectors/3/track.json");
		HttpsURLConnection urlConn2 = (HttpsURLConnection)url2.openConnection();
		urlConn2.setRequestProperty("Cookie", cookieValue);


		urlConn2.setDoInput(true);
		urlConn2.setDoOutput(true);
		urlConn2.setUseCaches(true);


		printout = new DataOutputStream (urlConn2.getOutputStream ());
		content = "USERNAME=" + URLEncoder.encode (userName) + "&PASSWORD=" + URLEncoder.encode (password);
		printout.writeBytes (content);
		printout.flush ();
		printout.close ();


		Reader inStream = new InputStreamReader(urlConn2.getInputStream ());

		System.out.println("dfdsff");
		}
		catch(java.net.MalformedURLException m)
		{
			m.printStackTrace();
		}
		catch(IOException r)
		{
			r.printStackTrace();
		}
	}

java.io.IOException: Server returned HTTP response code: 422 for URL:

at sun.net.www.protocol.http.HttpURLConnection.getInputStream(Unknown So
urce)
at sun.net.www.protocol.https.HttpsURLConnectionImpl.getInputStream(Unkn
own Source)

[Rob Spoor]

422 means "http://en.wikipedia.org/wiki/List_of_HTTP_status_codes#4xx_Client_Error" (source: http://en.wikipedia.org/wiki/List_of_HTTP_status_codes#4xx_Client_Error). Unfortunately, that's as far as I can help you as I've never seen this status code appear "in the wild" before.

[Mano Krrish]

Thanks for the reply Rob,

Yep, the definition of the 422 Error response is much weird, which I couldn't figure out. May be could you please confirm if the code I am using is correct?

[Mano Krrish]

All I just need to get currently is the reader of that inputstream, but I am getting this exception only just before the getInputStream() during the runtime.

Please help me.....!!!