import java.net.CookieHandler;
import java.net.CookieManager;
import java.net.CookieStore;
import java.net.HttpCookie;
import java.net.URL;
import java.net.URLConnection;
import java.util.List;public class Main {
public static void main(String args[]) throws Exception {
String urlString = "http://java.sun.com";
CookieManager manager = new CookieManager();
CookieHandler.setDefault(manager);
URL url = new URL(urlString);
URLConnection connection = url.openConnection();
Object obj = connection.getContent();
url = new URL(urlString);
connection = url.openConnection();
obj = connection.getContent();
CookieStore cookieJar = manager.getCookieStore();
List<HttpCookie> cookies = cookieJar.getCookies();
for (HttpCookie cookie : cookies) {
System.out.println(cookie);
}
}
}用这段代码获得不到什么值啊这是怎么回事?谁知道是什么原理啊
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