Java HttpsURLConnection和Cookies

基本上我只想从服务器上获取cookies。这里有一些简单的代码，但我想这还不足以获得每个cookie，比如sessionID等等

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) { }
    }
}

结果显示我只得到一个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，因此无法工作

有没有办法得到PREF cookie

谁能告诉我这是正确的方式（代码如下）发送邮件

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) {
        }
    }
}

屏蔽篡改数据

这意味着这段代码也不起作用。我怎样才能得到饼干？

---

有人能帮我吗？哪些书会有帮助？

我认为，通过您的声明，

con.getHeaderField（“Set Cookie”）”

您只检索一个标题。但可能服务器会发送两个不同标题中的Cookie给您

我使用另一条语句检索Cookie的所有标题：

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

List cookies=connection.getHeaderFields（）.get（“设置Cookie”）；

要查看您向服务器发送的内容以及服务器向您发送的内容，我建议在您的程序（或web navigator）和服务器之间使用代理。也许

Charles proxy

可以帮助您。

检查

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