退出登录功能

js代码：

$(".logout").click(function() {if (confirm('系统提示，您确定要退出本次登录吗?')) {location.href = ctx + '/logout';}});

jsp代码：

<a href="#" class="logout">安全退出</a>

java代码：

@RequestMapping(value = "/logout")public String logout(HttpSession httpSession) {Student student = (Student) httpSession.getAttribute("currentUser");if(null != student) {httpSession.removeAttribute("currentUser");}return "redirect:/index";}