Question

实现 界面登陆 退出 功能的java代码杂写

Answer 1

CS结构系统的退出如下：public void init() {
this.setTitle("用户登录界面");
this.add(createCenterPane());
this.setDefaultCloseOperation(this.DO_NOTHING_ON_CLOSE);
this.setSize(new Dimension(450, 335));
this.setLocationRelativeTo(null);
// this.setVisible(true);
this.addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
int choose = JOptionPane.showConfirmDialog(null, "是否要退出登录界面？",
"系统提示：", JOptionPane.YES_NO_OPTION);
if (choose == JOptionPane.YES_OPTION) {
System.exit(1);
}
}
});
}其中this为JFrame对象。BS结构的退出直接用windows.close()方法就行了！

Answer 2

public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException { response.setContentType("text/html;charset=gb2312");
request.getSession().invalidate();//清除当前用户相关的session对象
response.sendRedirect("login.jsp");
}

Answer 3

主要就是 两样功能
1.清除session
2.跳转到登陆页面