Spring中自定义拦截器的使用

public class UserTokenInterceptor implements HandlerInterceptor {
 
    /**
     * @description 访问Controller之前执行
     */
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        log.info("进入拦截器啦、、");
        return true; // true即可放行，false则不放行
    }
 
    /**
     * @description 请求访问Controller之后，渲染视图之前
     */
    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
 
    }
 
    /**
     * @description 请求访问Controller之后，渲染视图之后
     */
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
 
    }
}

import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
 
@Configuration
public class WebMvcConfig implements WebMvcConfigurer {
 
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        // 注册拦截器
        registry.addInterceptor(getUserTokenInterceptor()).addPathPatterns("/index/session");
        // 一定要加
        WebMvcConfigurer.super.addInterceptors(registry);
    }
 
 
    //    @Bean
    public UserTokenInterceptor getUserTokenInterceptor() {
        return new UserTokenInterceptor();
    }
 
}

@RestController
@RequestMapping("/index")
public class IndexController {
 
    @Deprecated
    @GetMapping("/session")
    public Object getSession(HttpServletRequest request) {
        HttpSession session = request.getSession();
        session.setAttribute("name", "lequal");
        session.setMaxInactiveInterval(3600);
        String name = (String) session.getAttribute("name");
        System.out.println("获取的名字是：" + name);
        return name;
    }
}