HttpSession接口中方法
getId()
getCreationTime()
getLastAccessedTime()
setMaxInactiveInterval()
getMaxInactiveInterval()
isNew():如果客户端请求消息中返回了一个与Servlet程序当前获得的HttpSession对象的会话标识号相同，则认为这个HttpSession对象不是新建的
invalidate()
getServletContext()
setAttribute()
getAttribute()
removeAttribute()
getAttributeNames()
login.jsp
<%-- Created by IntelliJ IDEA. User: dell Date: 2019/7/10 Time: 15:52 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> </head> SessionID:<%= session.getId()%> <br><br> IsNew:<%= session.isNew()%> <br><br> MaxInactive:<%=session.getMaxInactiveInterval()%> <br><br> CreateTime:<%= session.getCreationTime()%> <br><br> LastAssessTime:<%= session.getLastAccessedTime()%> <br><br> <% Object username = session.getAttribute("username"); if (username ==null){ username =""; } %> <body> <form action="hello.jsp" method="post"> username: <input type="text" name="username" value="<%=username%>"> <input type="submit" value="Submit"> </form> </body> </html>
hello.jsp
<%-- Created by IntelliJ IDEA. User: dell Date: 2019/7/10 Time: 15:56 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> </head> <body> SessionID:<%= session.getId()%> <br><br> IsNew:<%= session.isNew()%> <br><br> MaxInactive:<%=session.getMaxInactiveInterval()%> <br><br> CreateTime:<%= session.getCreationTime()%> <br><br> LastAssessTime:<%= session.getLastAccessedTime()%> <br><br> Hello:<%= request.getParameter("username")%> <br><br> <% session.setAttribute("username",request.getParameter("username")); %> <a href="login.jsp">重新登录</a> <br><br><br> <a href="logout.jsp">注销</a> </body> </html>
logout.jsp
<%-- Created by IntelliJ IDEA. User: dell Date: 2019/7/10 Time: 16:07 To change this template use File | Settings | File Templates. --%> <%@ page contentType="text/html;charset=UTF-8" language="java" %> <html> <head> <title>Title</title> </head> <body> SessionID:<%= session.getId()%> <br><br> IsNew:<%= session.isNew()%> <br><br> MaxInactive:<%=session.getMaxInactiveInterval()%> <br><br> CreateTime:<%= session.getCreationTime()%> <br><br> LastAssessTime:<%= session.getLastAccessedTime()%> <br><br> BYE:<%= session.getAttribute("username")%> <br><br> <a href="login.jsp">重新登录</a> <% session.invalidate(); %> </body> </html>转载于:https://www.cnblogs.com/yangHS/p/11164726.html
