简介

这是一个速查笔记: 在Spring Boot里配置一个登录拦截器

步骤

1. 写拦截器

@Component
public class LoginUserInterceptor implements HandlerInterceptor {

    public static ThreadLocal<MemberResponseVo> loginUser = new ThreadLocal<>();

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

        String uri = request.getRequestURI();
        AntPathMatcher antPathMatcher = new AntPathMatcher();
        boolean match = antPathMatcher.match("/order/order/status/**", uri);
        boolean match1 = antPathMatcher.match("/payed/notify", uri);
        if (match || match1) {
            return true;
        }

        //获取登录的用户信息
        MemberResponseVo attribute = (MemberResponseVo) request.getSession().getAttribute(LOGIN_USER);

        if (attribute != null) {
            //把登录后用户的信息放在ThreadLocal里面进行保存
            loginUser.set(attribute);

            return true;
        } else {
            //未登录，返回登录页面
            response.setContentType("text/html;charset=UTF-8");
            PrintWriter out = response.getWriter();
            out.println("<script>alert('请先进行登录，再进行后续操作！');location.href='http://auth.gulimall.com/login.html'</script>");
            // session.setAttribute("msg", "请先进行登录");
            // response.sendRedirect("http://auth.gulimall.com/login.html");
            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 {

    }
}

2. 写配置类

@Configuration
public class OrderWebConfig implements WebMvcConfigurer {

    @Autowired
    private LoginUserInterceptor loginUserInterceptor;

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(loginUserInterceptor).addPathPatterns("/**");
    }
}

效果

实现了登陆拦截功能.