HttpURLConnection

package com.piend.tongzhan.main;

import java.io.IOException;
import java.net.HttpURLConnection;
import java.net.URL;
public class AysLogin {

	public AysLogin() {
		try {
			URL url = new URL("http://192.168.1.104:8080/appweb/SwingAction");
			HttpURLConnection conn = (HttpURLConnection)url.openConnection();
			String sessionVale = conn.getHeaderField("Set-Cookie");
			Runtime.getRuntime().exec(
					"cmd.exe /c start " + "http://192.168.1.104:8080/appweb?sessionVale="+sessionVale);
			System.exit(0);

		} catch (IOException e) {
			e.printStackTrace();
		}

	}

	public static void main(String[] args) {
		new AysLogin();

	}

}


package com.tongzhan.appweb;

import java.util.HashMap;

import javax.servlet.http.HttpSession;

public class MySessionContext {
	private static MySessionContext instance;
	private HashMap<String, HttpSession> context;

	private MySessionContext() {
		context = new HashMap<String, HttpSession>();
	}

	public static MySessionContext getInstance() {
		if (instance == null) {
			instance = new MySessionContext();
		}
		return instance;
	}

	public synchronized void addSession(HttpSession session) {
		if (session != null) {
			context.put(session.getId(), session);
		}
	}

	public synchronized void deleteSession(HttpSession session) {
		if (session != null) {
			context.remove(session.getId());
		}
	}

	public synchronized HttpSession getSession(String sessionid) {
		if (sessionid != null) {
			return context.get(sessionid);
		} else {
			return null;
		}

	}

}