spring boot如何配置静态路径详解(404出现的坑）

@Slf4j
@Configuration
public class WebMvcConfig extends WebMvcConfigurationSupport {

    @Resource
    private PermissionInterceptor permissionInterceptor;

    @Resource
    private CheckOpenInterceptor checkOpenInterceptor;

    @Value("${dataDir}")
    private String rootPath;

    @Override
    protected void addResourceHandlers(ResourceHandlerRegistry registry) {
        log.info(">>addResourceHandlers>>"+"file:"+rootPath);
        registry.addResourceHandler("/file/**").addResourceLocations("file:"+rootPath);

               super.addResourceHandlers(registry);
    }

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

}

java -agentlib:jdwp=transport=dt_socket,address=5555,server=y,suspend=y -jar myproject.jar