Question

protected void doGet(HttpServletRequest request,
    HttpServletResponse response) throws ServletException, IOException {

request.getSession().invalidate();
response.sendRedirect(request.getContextPath() + "/login.jsp");
}

我尝试使用此代码进行注销选项但是，当系统闲置1或2分钟时，我需要自动注销，任何人都可以帮我解决这个问题....

Answer 1

    import java.awt.*;
    import java.awt.event.*;
    import java.util.logging.Level;
    import java.util.logging.Logger;
    import javax.swing.*;
 class InactivityListener implements ActionListener, AWTEventListener {
int cnt = 0;
public final static long KEY_EVENTS = AWTEvent.KEY_EVENT_MASK;
public final static long MOUSE_EVENTS
        = AWTEvent.MOUSE_MOTION_EVENT_MASK + AWTEvent.MOUSE_EVENT_MASK;
public final static long USER_EVENTS = KEY_EVENTS + MOUSE_EVENTS;
private Window window;
private Action action;
private int interval;
private long eventMask;
private Timer timer = new Timer(0, this);
public InactivityListener() throws ClassNotFoundException{
    Admin frame = new Admin();
    frame.setVisible(true);
    Action logout = new AbstractAction() {
        public void actionPerformed(ActionEvent e) {
            JFrame frame = (JFrame) e.getSource();
            LoginForm lf = null;
            try {
                lf = new LoginForm();
            } catch (ClassNotFoundException ex) {
                Logger.getLogger(InactivityListener.class.getName()).log(Level.SEVERE, null, ex);
            }
            lf.setVisible(true);
            frame.dispose();
        }
    };
    InactivityListener listener = new InactivityListener(frame, logout, 1);
    listener.start();
}
public InactivityListener(Window window, Action action) {
    this(window, action, 1);
}
public InactivityListener(Window window, Action action, int interval) {
    this(window, action, interval, USER_EVENTS);
}
public InactivityListener(Window window, Action action, int minutes, long eventMask) {
    this.window = window;
    setAction(action);
    setInterval(minutes);
    setEventMask(eventMask);
}
public void setAction(Action action) {
    this.action = action;
}
public void setInterval(int minutes) {
    setIntervalInMillis(minutes * 60000);
}
public void setIntervalInMillis(int interval) {
    this.interval = interval;
    timer.setInitialDelay(interval);
}
public void setEventMask(long eventMask) {
    this.eventMask = eventMask;
}
public void start() {
    timer.setInitialDelay(interval);
    timer.setRepeats(false);
    timer.start();
    Toolkit.getDefaultToolkit().addAWTEventListener(this, eventMask);
}
public void stop() {
    Toolkit.getDefaultToolkit().removeAWTEventListener(this);
    timer.stop();
}
public void actionPerformed(ActionEvent e) {
    ActionEvent ae = new ActionEvent(window, ActionEvent.ACTION_PERFORMED, "");
    action.actionPerformed(ae);
}
public void eventDispatched(AWTEvent e) {
    if (timer.isRunning()) {
        timer.restart();
    }
}
 }

Answer 2

对于Web应用程序，如果您想要会话超时，那么您可以在这里查看 Session Timeout。这可以使用部署描述符中的简单配置轻松完成即你的web.xml。希望这会有所帮助。

Answer 3

配置会话超时的最佳方法是在Web应用程序的web.xml文件中进行配置。

<web-app ...>
  <session-config>
    <session-timeout>20</session-timeout>
  </session-config>
</web-app>

在几分钟内给出时间。

以上设置将应用于整个Web应用程序。

或者您可以将此设置放在配置文件夹中的Web服务器（Ex apache tomcat）的web.xml文件中，以便将其应用于服务器的所有已部署的Web应用程序。

或者您可以通过添加此代码手动将设置应用于特定会话。

HttpSession session = request.getSession();
session.setMaxInactiveInterval(20*60);

系统空闲一段时间后使用java自动注销

3 个答案: