springboot配置（拦截）session失效重定向登录页

最新推荐文章于 2022-04-07 16:16:56 发布

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本文介绍了一种在Spring Boot应用中实现用户登录状态检查的方法，通过创建自定义拦截器UserLoginInterceptor来验证用户是否已登录。如果用户未登录，将被重定向至登录页面。


import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
@Component
@Slf4j
public class UserLoginInterceptor implements HandlerInterceptor {


    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response,
                             Object handler)throws Exception {

        HttpSession session = request.getSession(true);
        Integer id = (Integer) session.getAttribute("id");
        if(null!=id) {//已登录
            return true;
        }else {//未登录
            //直接重定向到登录页面
            response.sendRedirect(request.getContextPath()+"/login.html");
            return false;
        }
    }

}


import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.cache.annotation.EnableCaching;
import org.springframework.web.servlet.config.annotation.InterceptorRegistry;
import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;

@SpringBootApplication
@EnableCaching
public class UserLoginAdapter implements WebMvcConfigurer {

    @Autowired
    private UserLoginInterceptor userLoginInterceptor;

    @Override
    public void addInterceptors(InterceptorRegistry registry) {

        //添加对用户是否登录的拦截器，并添加过滤项、排除项
        registry.addInterceptor(userLoginInterceptor).addPathPatterns("/**")
                .excludePathPatterns("/css/**","/js/**","/images/**")//排除样式、脚本、图片等资源文件
                .excludePathPatterns("/login.html")//排除登录页面
                //.excludePathPatterns("/wechatplatformuser/defaultKaptcha")//排除验证码
                .excludePathPatterns("/admin/login");//排除用户点击登录按钮

    }

}