这是我的网站。xml文件,它位于WEB-INF/lib中。它指定会话超时为1分钟,但不会在活动1分钟后将用户超时。
Web。xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
<servlet>
<servlet-name>Login</servlet-name>
<servlet-class>Login</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Login</servlet-name>
<url-pattern>/Login</url-pattern>
</servlet-mapping>
<session-config>
<session-timeout>1</session-timeout>
</session-config>
</web-app>
我在我的jsp文件中使用了这一行
session.getMaxInactiveInterval()
,它输出了1800
(30分钟)。有人为什么默认为30而不是使用我web.xml文件中指定的时间吗?
编辑:
我在我的jsp页面上有代码,它检查会话属性,如果它确实存在,会在一分钟后将用户重定向到登录页面,即使在页面刷新时,用户也不会被重定向。
if(session.getAttribute("username") != null){
out.println(session.getAttribute("username"));
}else{
response.setStatus(response.SC_MOVED_TEMPORARILY);
response.setHeader("Location", "index.jsp");
}
编辑完整代码(Login.java):
package com.labs.xmlgenerator.controller.managesession;
import java.io.IOException;
import java.sql.SQLException;
import java.util.HashMap;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.Cookie;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import com.labs.xmlgenerator.model.dbconnection.*;
/**
* Servlet implementation class Login
*/
@WebServlet(description = "Verifies Users Credentials", urlPatterns = { "/Login" })
public class Login extends HttpServlet {
private static final long serialVersionUID = 1L;
private DbLoginQueries query = new DbLoginQueries();
/**
* @see HttpServlet#HttpServlet()
*/
/*
public Login() {
super();
// TODO Auto-generated constructor stub
}*/
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
try {
validateLoginCredentials(request.getParameter("liUsr"),request.getParameter("liPwd"),request,response);
} catch (ClassNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (SQLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
private void validateLoginCredentials (String username, String password, HttpServletRequest request, HttpServletResponse response) throws IOException, ClassNotFoundException, SQLException{
Boolean valid = true;
int resultSize;
HashMap<String, String> userDetails = null;
HttpSession session = request.getSession(true);
String location = "index.jsp";
Cookie usernameErrorCookie;
Cookie passwordErrorCookie;
Cookie usernameCookie;
if(username == null || username == ""){
valid = false;
usernameErrorCookie = new Cookie("liUsrErrCookie","Please enter a valid username");
response.addCookie(usernameErrorCookie);
}else{
usernameCookie = new Cookie("liUsrCookie",username);
response.addCookie(usernameCookie);
}
if(password == null || password == ""){
valid = false;
passwordErrorCookie = new Cookie("liPwdErrCookie","Please enter a valid password");
response.addCookie(passwordErrorCookie);
}
if(valid == true){
userDetails = query.loginQuery(username);
resultSize = userDetails.size();
if(resultSize < 4){
valid = false;
usernameErrorCookie = new Cookie("liUsrErrCookie","The username entered is not valid");
response.addCookie(usernameErrorCookie);
}
else if(resultSize > 4){
valid = false;
usernameErrorCookie = new Cookie("liUsrErrCookie","The username is returning more than one result, please contact admin");
response.addCookie(usernameErrorCookie);
}
else if(resultSize == 4){
if(!userDetails.get("Password").equals(password)){
valid = false;
passwordErrorCookie = new Cookie("liPwdErrCookie","The entered password is incorrect");
response.addCookie(passwordErrorCookie);
}
}
}
if(valid == true){
session.setAttribute("username", userDetails.get("Username"));
session.setAttribute("permission", userDetails.get("AdminPermissions"));
session.setAttribute("email", userDetails.get("Email"));
location = "home.jsp";
}else{
location = "index.jsp#login";
}
response.setStatus(response.SC_MOVED_TEMPORARILY);
response.setHeader("Location", location);
}
}
home.jsp
<?xml version="1.0" encoding="ISO-8859-1" ?>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
<title>Home</title>
<link rel="stylesheet" href="resources/css/Common.css" type="text/css">
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
<script src="resources/js/Common.js"></script>
</head>
<body>
<header>
<div id="actionsMenu">
<ul id="actionLinks">
<li><a class="linkButtons" id="userNameLink">
<%
System.out.println(session.getMaxInactiveInterval());
if(session.getAttribute("username") != null){
out.println(session.getAttribute("username"));
}else{
out.println("no user");
/*
response.setStatus(response.SC_MOVED_TEMPORARILY);
response.setHeader("Location", "index.jsp");*/
}
%>
</a></li>
<li><a class="linkButtons" href="Logout">Log Out</a></li>
<li><a class="linkButtons" href="#">Update</a></li>
</ul>
</div>
</header>
<nav class="tabs">
<section id="generateSection">
<h2 class="selectedTab" id="generateTab">
<a id="gene" href="#generateXML">Generate XML</a>
</h2>
<div class="selectedContent" id="generateNav">
<ul id="links">
<li><a class="navLink" href="#graphic">Graphic Interface</a></li>
<li><a class="navLink" href="#xml">XML Interface</a></li>
</ul>
</div>
</section>
<section id="adminSection">
<h2 class="normalTab" id="adminTab">
<a href="#admin">Admin</a>
</h2>
<div class="normalContent" id="adminNav">
<ul id="links">
<li><a class="navLink" href="#images">Manage Images</a></li>
<li><a class="navLink" href="#keywords">Manage Keywords</a></li>
<li><a class="navLink" href="#users">Manage Users</a></li>
</ul>
</div>
</section>
</nav>
<div id="content">
<noscript><p id="javascriptError">This website requires JavaScript to be enabled.</p></noscript>
</div>
<div id="updateUserDetails"></div>
<div id="popup">
<input type="button" value="X" id="exitButton">
<p class="pageTitle" style="float:left; margin:0px;">Update Details</p>
<form id="updateForm" action="Update" onsubmit="return updateValidation()" method="post" >
<p id="user">Username :</p>
<p id="userNameUpdate"><%
if(session.getAttribute("username") != null){
out.println(session.getAttribute("username"));
}%></p>
<p class="error" id="updCurrentPwdErr">
<%
Cookie[] currentPassEror = null;
currentPassEror = request.getCookies();
if(currentPassEror != null){
for(int i = 0; i < currentPassEror.length; i++){
Cookie cookie = currentPassEror[i];
if(cookie.getName().equals("updCurrentPwdErrCookie")){
out.println(cookie.getValue());
cookie.setMaxAge(0);
response.addCookie(cookie);
}
}
}
%>
</p>
<label for="updCurrentPwdLbl">Current Password :</label>
<br />
<input type="password" name="updCurrentPwd" id="updCurrentPwd">
<br />
<p class="error" id="updNewPwdErr">
<%
Cookie[] newPassCookies = null;
newPassCookies = request.getCookies();
if(newPassCookies != null){
for(int i = 0; i < newPassCookies.length; i++){
Cookie cookie = newPassCookies[i];
if(cookie.getName().equals("updNewPwdErrCookie")){
out.println(cookie.getValue());
cookie.setMaxAge(0);
response.addCookie(cookie);
}
}
}
%></p>
<label for="updNewPwdLbl">New Password :</label>
<br />
<input type="password" id="updNewPwd" name="updNewPwd">
<br />
<p class="error" id="updReNewPwdErr">
<%
Cookie[] reNewPassCookies = null;
reNewPassCookies = request.getCookies();
if(reNewPassCookies != null){
for(int i = 0; i < reNewPassCookies.length; i++){
Cookie cookie = reNewPassCookies[i];
if(cookie.getName().equals("updReNewPwdErrCookie")){
out.println(cookie.getValue());
cookie.setMaxAge(0);
response.addCookie(cookie);
}
}
}
%>
</p>
<label for="updReNewPwdLbl">Re-Enter New Password :</label>
<br />
<input type="password" id="updReNewPwd" name="updReNewPwd">
<br />
<p class="error" id="updEmailErr">
<%
Cookie[] emailErrCookies = null;
emailErrCookies = request.getCookies();
if(emailErrCookies != null){
for(int i = 0; i < emailErrCookies.length; i++){
Cookie cookie = emailErrCookies[i];
if(cookie.getName().equals("updEmailErrCookie")){
out.println(cookie.getValue());
cookie.setMaxAge(0);
response.addCookie(cookie);
}
}
}
%>
</p>
<label for="updEmailLbl">Email :</label>
<br />
<input type="text" id="updEmail" name="updEmail" value="<%
boolean foundEmailCookie = false;
Cookie[] emailCookies = null;
emailCookies = request.getCookies();
if(emailCookies != null){
for(int i = 0; i < emailCookies.length; i++){
Cookie cookie = emailCookies[i];
if(cookie.getName().equals("updEmailCookie")){
foundEmailCookie = true;
out.println(cookie.getValue());
cookie.setMaxAge(0);
response.addCookie(cookie);
}
}
}
if(!foundEmailCookie){
if(session.getAttribute("email") != null){
out.println(session.getAttribute("email"));
}
}
%>">
<input type="hidden" id="updUrl" name="updUrl" value="">
<br />
<input type="submit" value="UPDATE">
</form>
</div>
</body>
</html>
>
一分钟的会话超时低得离谱。应该要几个小时。
超时发生在那么多不活动之后,而不是那么多活动之后。
正确的测试是请求。getSession(false)==null,或请求。getSession(true)。isNew()。
网络。xml应该直接在WEB-INF中,而不是在WEB-INF/lib中。
会话超时层次结构:
会话超时配置的顺序:
HttpSession。setMaxInactiveInterval(int)
每个后续条目都覆盖上述配置。
顺致敬意,
我有一个Web应用程序,它的web.xml超时为1分钟,但它从未超时过这个值。它对其他值(如5,9,10或25分钟)超时,但从未超时1分钟。这是Tomcat 8的最小会话超时限制吗?
在 HTTP 协议中,当客户端不再处于活动状态时没有显示的终止信号。这意味着当客户端不再处于活跃状态时可以使用的唯一机制是超时时间。 Servlet 容器定义了默认的会话超时时间,且可以通过 HttpSession 接口的 getMaxInactiveInterval 方法获取。开发人员可以使用HttpSession 接口的 setMaxInactiveInterval 方法改变超时时间。这些方法
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