当客户端关闭后,服务器不关闭,两次获取Session是否为同一个
默认情况下,不是
如果相同,则可以创建Cookie,键为JESSIONID,设置最大存活时间,让cookie持久化保存
Cookie cookie = new Cookie("JSESSIONID",session.getId());
cookie.setMaxAge(60*60);
response.addCookie(cookie);
@WebServlet("/SessionDemo3") public class SessionDemo3 extends HttpServlet { protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { HttpSession session = request.getSession(); System.out.println(session); Cookie cookie = new Cookie("JSESSIONID",session.getId()); cookie.setMaxAge(60*60); response.addCookie(cookie); } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.doPost(request, response); } }
会话技术_session_细节2
客户端不关闭,服务器关闭后,两次获取的Session是同一个吗?
不是同一个,但是要确保数据不丢失
Session的钝化
在服务器正常关闭之前,将session对象系列化到硬盘上
Session的活化
在服务器启动后,将session文件转化为内存中的session对象即可。
@WebServlet("/SessionDemo3") public class SessionDemo3 extends HttpServlet { protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { HttpSession session = request.getSession(); System.out.println(session); Cookie cookie = new Cookie("JSESSIONID",session.getId()); cookie.setMaxAge(60*60); response.addCookie(cookie); } protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException { this.doPost(request, response); } }
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标签:request,60,会话,细节,session,cookie,Cookie,response From: https://www.cnblogs.com/12-12-12/p/16587412.html