HttpsURLConnection和Cookies

Question

基本上我只想从服务器获取cookie.这里是简单的代码,但我想这并不足以获得每个cookie,例如sessionID等.

import java.net.*;
import java.util.*;

    public class Cookie {

    public static void main(String[] args) {

        try {
            URL url = new URL("http://www.google.com/");
            URLConnection conn = url.openConnection();
            System.out.println(con.getHeaderField("Set-Cookie"));

        } catch (Exception e) { }
    }
}

结果显示我只获得一个cookie:

NID=61=nNSsAl4g7DfxqHE7t__ghfoCc_J-RmY7PaTNoPOd_khLdvvuqI-fnteHgnQXMzmxj_C5HdMozcGfOTt8PvePLKpbDdUlzdVZiRKwNpQIej6_T69jt9C7Oi6E4F-gWPHD; expires=Mon, 14-Jan-2013 17:16:40 GMT; path=/; domain=.google.pl; HttpOnly

Firefox获得NID和PREF,因此无法正常工作.

有没有办法获得PREF cookie？

任何人都可以告诉我这是发送POST的正确方法(下面的代码).

import java.io.*;
import java.net.URL;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import javax.net.ssl.HttpsURLConnection;

public class Cookie_Example {

    public static void main(String[] args){

        try{
            String https_url = "https://ssl.filmweb.pl/j_login";
            URL url = new URL(https_url);
            String post = "_login_redirect_url=http%253A%252F%252Fwww.filmweb.pl%252F&j_username=test.filmweb%40gmail.com&j_password=test.filmweb&_rememberMe=on&pass=zaloguj";

            HttpsURLConnection con = (HttpsURLConnection)url.openConnection();
            con.setInstanceFollowRedirects(false);
            con.setDoInput(true);
            con.setDoOutput(true);
            con.setRequestMethod("GET");
            con.setRequestProperty("Host", "ssl.filmweb.pl");
            con.setRequestProperty("User-Agent", "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:13.0) Gecko/20100101 Firefox/13.0.1");
            con.setRequestProperty("Accept","text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8");
            con.setRequestProperty("Accept-Language","pl,en-us;q=0.7,en;q=0.3");
            con.setRequestProperty("Accept-Encoding","gzip, deflate");
            con.setRequestProperty("Connection","keep-alive");
            con.setRequestProperty("Referer","https://ssl.filmweb.pl/login");
            con.setRequestProperty("Content-Type","application/x-www-form-urlencoded");
            con.setRequestProperty("Content-Length",post.length()+"");
            DataOutput output = new DataOutputStream(new BufferedOutputStream(con.getOutputStream()));
            output.write(post.getBytes());

            Map<String, List<String>> hf = con.getHeaderFields();

            Iterator it = hf.entrySet().iterator();
            while (it.hasNext()) {
                Map.Entry pairs = (Map.Entry)it.next();
                System.out.println(pairs.getKey() + " = " + pairs.getValue());
            }
        } catch (Exception e) {
        }
    }
}

结果是空cookie,

Set-Cookie = [_artuser_rememberMe=;Path=/;Domain=filmweb.pl;Expires=Thu, 01-Jan-1970 00:00:00 GMT]

http://img72.imageshack.us/img72/1134/testgof.jpg

来自Tamper Data的屏幕

这意味着此代码也不起作用.我怎样才能获得__utma,__ utmz等cookie？谁能帮我？哪些书会有帮助？

Answer 1

我认为,使用您的声明,con.getHeaderField("Set-Cookie")"您只需检索一个标题.但也许服务器会在两个不同的标头中向您发送两个cookie.

我使用另一个语句来检索所有cookie的标题:

List<String> cookies = connection.getHeaderFields().get("Set-Cookie");

要查看您发送给服务器的内容以及服务器发送给您的内容,我建议您在程序(或Web导航器)​​和服务器之间使用代理.也许Charles proxy可以帮到你.