一、cookie

@WebServlet("/cookie01")
public class CookieServlet extends HttpServlet {
    @Override
    protected void service(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //创建一个cookie
        Cookie cookie = new Cookie("name", "tom");
        //将cookie对象保存到客户端
        response.addCookie(cookie);
        cookie.setMaxAge(30);//设置cookie有效时长
        request.getRequestDispatcher("hello.html").forward(request,response);
    }
}

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>cookie已保存</h1>
</body>
</html>

Java学习 --- servlet的cookie保存信息

一、cookie