1、配置spring-mvc.xml文件

<?xml version="1.0" encoding="UTF-8"?>



    
    

    
    

    
    

    
    
        
        
    

    
    
        
            
            
            
            
            
        
    

    
    
    
    

注意点：扫描包要扫描到interceptors包

2、配置web.xml文件

添加HiddenHttpMethodFilter拦截器

    
        HiddenHttpMethodFilter
        org.springframework.web.filter.HiddenHttpMethodFilter
    
    
        HiddenHttpMethodFilter
        /*
    

3、编写LoginIntercept.java文件

让LoginIntercept类实现HandlerInterceptor接口，并重写其中的方法，在preHandle方法里进行验证是否登录

package com.ku.interceptors;

import com.ku.pojo.Admin;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Component
public class LoginIntercept implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        Admin loginAdmin = (Admin) request.getSession().getAttribute("loginAdmin");
        if(loginAdmin != null){
            return true;
        } else {
            response.sendRedirect(request.getContextPath()+"/manager/managerLogin");
            return false;
        }

    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {

    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {

    }

}

注意点：@Component注解别忘了

4、编写jsp页面

1. index.jsp

<%--
  Created by IntelliJ IDEA.
  User: aria
  Date: 2022/4/20
  Time: 8:54
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>


    



    前往视频专区

    前往后台管理

2. video.jsp

<%--
  Created by IntelliJ IDEA.
  User: aria
  Date: 2022/4/20
  Time: 8:57
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>


    


    视频专区

3. main.jsp

<%--
  Created by IntelliJ IDEA.
  User: aria
  Date: 2022/4/20
  Time: 8:55
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>


    


    后台主页

    管理员姓名：${sessionScope.loginAdmin.adminName}

4. managerLogin.jsp

<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%--
  Created by IntelliJ IDEA.
  User: aria
  Date: 2022/4/20
  Time: 9:03
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>


    



    

        用户名：

        密 码：

        
    
    
        ${msg}
    

5、项目结构

项目使用到了MyBatis逆向工程生成mapper和pojo。controller和service这里也不展示了，如果搜到这篇文章那应该这些文件的编写都不是问题