spring-boot - 在 spring boot 2.1.1 自动配置中没有调用 addInterceptors

Question

我正在编写一个 spring-boot start，旨在为处理程序自动配置拦截器。主类如下所示:

@Configuration
@ConditionalOnWebApplication
@EnableConfigurationProperties(MetricsProperties.class)
public class MetricsConfiguration implements WebMvcConfigurer {
    private static Logger logger = LoggerFactory.getLogger(MetricsConfiguration.class);

    private final MetricsProperties metricsProperties;

    public MetricsConfiguration(MetricsProperties properties) {
        this.metricsProperties = properties;
    }

    @Bean
    @Order(0)
    public MetricsCenter createMetricsCenter() {
        MetricsCenter metricsCenter = MetricsCenter.getInstance();
        metricsCenter.init(metricsProperties);
        return metricsCenter;
    }

    @Override
    public void addInterceptors(InterceptorRegistry registry) {
        logger.error("alex add");   // the log does not appear!!
        registry.addInterceptor(new MetricsInterceptor());
    }
}

根据文件

https://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#boot-features-spring-mvc-auto-configuration

上面写着:

If you want to keep Spring Boot MVC features and you want to add additional MVC configuration (interceptors, formatters, view controllers, and other features), you can add your own @Configuration class of type WebMvcConfigurer but without @EnableWebMvc. If you wish to provide custom instances of RequestMappingHandlerMapping, RequestMappingHandlerAdapter, or ExceptionHandlerExceptionResolver, you can declare a WebMvcRegistrationsAdapter instance to provide such components.

我按照文档说的做了，但是没有调用 addInterceptors 并且我的拦截器没有配备spring mvc。

有人可以帮我离开这里吗？

谢谢。

Answer 1

您可能有一个自定义 @Configuration 类(例如，在您的启动器的使用者中)扩展 WebMvcConfigurationSupport 类，在这种情况下，它会完全控制您的 WebMvcConfigurer不会被调用。