簡單看的清楚比較重要

import java.io.*;

import javax.servlet.*;

import javax.servlet.http.*;



public class CookieExample extends HttpServlet {



    public void doGet(HttpServletRequest request, HttpServletResponse response)

    throws IOException, ServletException

    {

        response.setContentType("text/html");

        PrintWriter out = response.getWriter();

        

        // print out cookies



        Cookie[] cookies = request.getCookies();

        for (int i = 0; i < cookies.length; i++) {

            Cookie c = cookies[i];

            String name = c.getName();

            String value = c.getValue();

            out.println(name + " = " + value);

        }



        // set a cookie



        String name = request.getParameter("cookieName");

        if (name != null && name.length() > 0) {

            String value = request.getParameter("cookieValue");

            Cookie c = new Cookie(name, value);

            response.addCookie(c);

        }

    }

}