JavaWeb25.5【综合案例：退出系统功能】

header.html

<a href="javascript:location.href='exitServlet';">退出</a>

 

ExitServlet.java

package cn.haifei.travel.web.servlet;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet("/exitServlet")
public class ExitServlet extends HttpServlet {
    protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        //1.销毁session
        request.getSession().invalidate();
        //2.跳转登录页面
        response.sendRedirect(request.getContextPath()+"/login.html"); //response-redirect重定向时要加虚拟目录
    }

    protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
        this.doPost(request, response);
    }
}