How do I send a cookie in Servlet?
Category: javax.servlet, viewed: 721 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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