URL,URLConnection,HttpURLConnection &&Session

Question

Hi,all
I want to access a web page by URL/URLConnection/HttpURLConnection
the page need a login user,it check the Session,if the session is null,then it redirect to the login page
Now I have the user ID and Password ,and I can complete my login by URL Class
but when I access the wanted page after I login,it's still return that the session is not set.
below is the Code Segment,thanx in advance
String urlStr = "http://buyc:8080/ecommerce/oa/login.jsp?txtUsername=sh001&txtPwd=111111&role=storeman";
URL url = new URL(urlStr);
HttpURLConnection hurlc =(HttpURLConnection) url.openConnection();
hurlc.setFollowRedirects(true);
hurlc.setInstanceFollowRedirects(true);
hurlc.setUseCaches(true);
hurlc.connect();//if check login successfully in login.jsp,it will redirect to a check page.
InputStream is=hurlc.getInputStream();//
byte tmpbyte[]=new byte[is.available()];
int num=is.read(tmpbyte);
String result=new String(tmpbyte);
System.out.println("the " + num + ":" + result);

Answer 1

IIRC, you use the UrlConnection's methods getHeaderField and getHeaderFields to get the cookies, and then setRequestProperty to set the cookies on subsequent connections. These methods are inherited by HttpUrlConnection.
There may be a library out there to make this stuff easier, but I don't think it's in the standard libraries.