import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;
import java.util.Map;
public class Main {
public static void main(String[] args) throws Exception {
String s;
s = "http://www.y.com/authTest";
URL url = new URL(s);
URLConnection urlc = url.openConnection();
Map<String, List<String>> hf = urlc.getHeaderFields();
for (String key : hf.keySet())
System.out.println(key + ": " + urlc.getHeaderField(key));
System.out.println(((HttpURLConnection) urlc).getResponseCode());
}
}
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