package com.xuwen.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

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

/**
 * author:xuwen
 * Created on 2022/4/21
 */
@Configuration
public class LoginHandlerInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
       //用户登陆成功，会有session
        Object loginUser = request.getSession().getAttribute("loginUser");
        if(loginUser == null){//没有登陆
            request.setAttribute("msg","没有权限，请先登陆");
            request.getRequestDispatcher("/index.html").forward(request,response);
            return  false;

        }else{
            return true;
        }

    }


}