How do I send a cookie in Servlet?
Category: javax.servlet, viewed: 2591 time(s).
A cookie is a piece of information sent to a browser by a Web Server. The browser then returns that information to the Web server. This is how some Web pages "remember" your previous visits; for example, an E-Commerce site might use a cookie to remember which items you've placed in your online shopping cart. Cookies can also store user preference information, log-in data, etc.
Here is an example to send a cookie in the http response object to the client browser.
package org.kodejava.example.servlet;
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class WriteCookieExample extends HttpServlet {
protected void doGet(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
response.setContentType("text/html");
//
// Send a cookie named username to the client. There are some others
// properties that we can set before we send the cookie, such as comments,
// domain name, max age, path, a secure flag, etc.
//
Cookie cookie = new Cookie("username", "jduke");
response.addCookie(cookie);
}
protected void doPost(HttpServletRequest request,
HttpServletResponse response) throws ServletException, IOException {
}
}
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