webapps.zip

HelloWorld.zip

老师帮我看下，我找不到错误

springAopDemo.rar

Snipaste_2021-03-21_17-55-08.png

老师帮忙查看一下

filter部分代码:

package com.bjsxt.web.filter;

import com.bjsxt.commons.Constants;
import com.bjsxt.pojo.User;

import javax.servlet.*;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import java.io.IOException;

//创建过滤器
//判断用户是否进行登录的过滤器
@WebServlet(urlPatterns = {"*.do","*.jsp"})
public class UserLoginFilter implements Filter {
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        //参数强制类型转换
        HttpServletRequest request = (HttpServletRequest) servletRequest;
        //获得请求的url路径
        String uri = request.getRequestURI();


        //判断当前请求是否含有login.jsp或者为login.do，如果是，就得放行，不能全部拦截，否则就是沙雕系统了
        if (uri.indexOf("login.jsp") != -1 || uri.indexOf("login.do") != -1){
            System.out.println("执行了doFilter放行1");
            filterChain.doFilter(servletRequest,servletResponse);
        } else {
            //根据session信息判断是否进行登录执行操作,若没有进行登录,则不允许访问
            HttpSession session = request.getSession();
            //获得user对象
            User user = (User) session.getAttribute(Constants.USER_SESSION_KEY);
            System.out.println("未执行");
            //进行判断
            if (user != null) {
                //进行放行
                filterChain.doFilter(servletRequest, servletResponse);
            }else {
                request.setAttribute(Constants.REQUEST_MSG,"不登录不好使~");
                //进行请求转发
                request.getRequestDispatcher("login.jsp").forward(servletRequest, servletResponse);

            }
        }
    }

    @Override
    public void destroy() {

    }
}