@Configuration

@EnableWebMvc

public class ValidationConfig implements WebMvcConfigurer {



    @Override

    public void addInterceptors(InterceptorRegistry registry) {

        registry.addInterceptor(new HandlerInterceptor() {

            @Override

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

                System.out.println("postHandle");

                System.out.println(request.getRequestURI());

            }



            @Override

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

                System.out.println("preHandle");

                System.out.println(request.getRequestURI());



                return true;

            }

        });

    }

}

preHandle

/test.html

postHandle

/test.html

@Slf4j

@Configuration

public class WebSecurityConfig extends WebMvcConfigurerAdapter {



  @Bean

  public SecurityInterceptor getSecurityInterceptor() {

    return new SecurityInterceptor();

  }



  @Override

  public void addInterceptors(InterceptorRegistry registry) {

    InterceptorRegistration addInterceptor = registry.addInterceptor(getSecurityInterceptor());



    // 排除配置

    addInterceptor.excludePathPatterns("/login.html");

    addInterceptor.excludePathPatterns("/register.html");



    // 拦截配置

    addInterceptor.addPathPatterns("/**");



  }



  private class SecurityInterceptor extends HandlerInterceptorAdapter {

    @Override

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

      String path = request.getRequestURI();

      HttpSession session = request.getSession();

      User user = (User) session.getAttribute("user");



      log.info("path: {}", path);

      log.info("user: {}", user);



      if (path.contains("login") || path.contains("register")) {

        return true;

      }



      if (user != null) {

        System.out.println("返回true");

        return true;

      }



      response.sendRedirect("/login.html");

      return false;

    }



  }

}