spring boot 注解 null

[Mr_Suntb]

我在inetlij中新建一个 spring boot项目，一个非web项目，使用中发现 注解为NULL。

@SpringBootApplication
@Configuration
@EnableAutoConfiguration
@ComponentScan
public class SpidermanApplication implements CommandLineRunner {

@Autowired
Aaa persistence;

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

@Override
public void run(String... strings) throws Exception {
persistence.saveImage("test.jpg","test".getBytes());//这里会提persistence=null
}
}

@Service
public class Bbb implements Aaa {
@Override
public void saveGirlInfo(Girl girl, List<String> imgUrlArray) {

}

@Override
public void saveImage(String filePathName, byte[] data) {

}
}