粘贴自己用
public class LogoutServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
/**
* @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
//处理注销请求
HttpSession session =request.getSession();
session.removeAttribute("user");//容器通知UserList类调用remove方法
response.setContentType("text/html");
response.setCharacterEncoding("utf-8");
PrintWriter out=response.getWriter();
out.println("<html>");
out.println(" <head>");
out.println(" <title>退出登录</title>");
out.println(" </head>");
out.println(" <body>");
out.println(" <br/>已退出登录!");
out.println(" <a href='login.html'>重新登录</a>");
out.println(" </body>");
out.println("</html>");
out.flush();
out.close();
}