拦截器中注入service失败

@Configuration
public class WebConfig implements WebMvcConfigurer {
	@Bean("dp.sso.interceptor")
	public SSOInterceptor ssoInterceptor(){
		return new SSOInterceptor();
	}
	public void addInterceptors(InterceptorRegistry registry) { 
		registry.addInterceptor(ssoInterceptor())
	}
}