Setting and Reading Cookies : Cookie « Servlets « Java






  1. Java
  2. Servlets
  3. Cookie

Setting and Reading Cookies

    

import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;

public class SettingandReadingCookies extends HttpServlet 
{

    public void doGet(HttpServletRequest request, HttpServletResponse response)
    throws IOException, ServletException
    {
        response.setContentType("text/html");
        PrintWriter out = response.getWriter();
        
        out.println("<HTML>");
        out.println("<HEAD>");
        out.println("<TITLE>");
        out.println("A Web Page");
        out.println("</TITLE>");
        out.println("</HEAD>");
        out.println("<BODY");

        Cookie[] cookies = request.getCookies();
        boolean foundCookie = false;

        for(int loopIndex = 0; loopIndex < cookies.length; loopIndex++) { 
            Cookie cookie1 = cookies[loopIndex];
            if (cookie1.getName().equals("color")) {
                out.println("bgcolor = " + cookie1.getValue());
                foundCookie = true;
            }
        }  

        if (!foundCookie) {
            Cookie cookie1 = new Cookie("color", "cyan");
            cookie1.setMaxAge(24*60*60);
            response.addCookie(cookie1); 
        }

        out.println(">");
        out.println("<H1>Setting and Reading Cookies</H1>");
        out.println("This page will set its background color using a cookie when reloaded.");
        out.println("</BODY>");
        out.println("</HTML>");
}
}








SettingandReadingCookiesServlet.zip( 90 k)

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