Java自定义过滤器和拦截器实现ThreadLocal线程封闭

public class RequestHolder {

    private final static ThreadLocal<Long> requestHolder = new ThreadLocal<>();

    public static void set(Long id) {
        requestHolder.set(id);
    }

    public static Long get() {
        return requestHolder.get();
    }

    public static void remove() {
        requestHolder.remove();
    }

}

@Slf4j
public class HttpFilter implements Filter {

    
    @Override
    public void init(FilterConfig filterConfig) throws ServletException {

    }

    
    @Override
    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException {
        //把普通servlet强转成httpservlet
        HttpServletRequest httpServletRequest = (HttpServletRequest) servletRequest;
        Long threadId = Thread.currentThread().getId();
        log.info("do filter,threadId:{} servletPath:{}", threadId, httpServletRequest.getServletPath());
        //把当前线程id放入requestHolder
        RequestHolder.set(threadId);
        //放行
        filterChain.doFilter(httpServletRequest, servletResponse);
    }

    
    @Override
    public void destroy() {

    }
}

@Slf4j
public class HttpInterceptor extends HandlerInterceptorAdapter {

    
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        log.info("preHandle执行。。。");
        return true;
    }

    
    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        RequestHolder.remove();
        log.info("afterCompletion执行。。。");
        return;
    }
}

@springBootApplication
public class Application extends WEBmvcConfigurationSupport {

    public static void main(String[] args) {
        SpringApplication.run(ConcurrencyApplication.class, args);
    }

    
    @Bean
    public FilterReGIStrationBean filterRegistrationBean(){
        FilterRegistrationBean filterRegistrationBean = new FilterRegistrationBean();
        filterRegistrationBean.setFilter(new HttpFilter());
        //设置自定义过滤器拦截的url
        filterRegistrationBean.addUrlPatterns("/threadLocal
    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        registry.addInterceptor(new HttpInterceptor()).addPathPatterns("
@Controller
@RequestMapping("/threadLocal")
public class ThreadLocalController {

    @RequestMapping("/test")
    @ResponseBody
    public Long test() {
        return RequestHolder.get();
    }
}