java - 无法在类中 Autowiring bean

Question

下面是我定义 bean 的配置类。

@Configuration
@EnableWebMvc
@ComponentScan(basePackages = { "com.abc.billing.web.controllers", "com.abc.billing.core.services" })
@Import(PersistenceConfig.class)
public class WebAppConfig extends WebMvcConfigurerAdapter {

  @Override
    public void configureMessageConverters(List<HttpMessageConverter<?>> converters) {
        converters.add(new MappingJackson2HttpMessageConverter());
  }

  @Override
  public void addInterceptors(InterceptorRegistry registry) {
    registry.addInterceptor(new BusinessUnitInterceptor());
  }

  @Bean
  public TripsExpiryTask tripsExpiryTask() {
    return new TripsExpiryTask();
  }

  @Bean
  public TripsExpiryJob tripsExpiryJob() {
    return new TripsExpiryJob();
  }

  @Bean
  public TripsExpiryJobTrigger tripsExpiryJobTrigger() throws SchedulerException {
    return new TripsExpiryJobTrigger();
  }

}

为了访问 bean，我在另一个类(TripExpiryJob)中 Autowiring 它

public class TripsExpiryJob implements Job {

  @Autowired
  TripsExpiryTask tripsExpiryTask;

  @Override
  public void execute(JobExecutionContext arg0) throws JobExecutionException {
    tripsExpiryTask.execute();
  }
}

但无法在 TripExpiryJob 类中 Autowiring TripExpiryTask。

更新:

public class TripsExpiryTask {

    @Autowired
    BillableTripRepository btr;

    @Autowired
    BillableRequestRepository brr;

    public TripsExpiryTask() {
        System.out.println("Trips Expiry Job!");
    }

    private void updateProbableExpiredTrips(List<PBillableTrip> expiredTrips) {
    //Some Code
    }

    private void expireTrips() {
        // Some Code
    }

    public void execute() {
        expireTrips();
    }
}

Answer 1

要初始化 @Autowired 对象，请确保您正在执行

<上下文:组件扫描>

在配置文件中。

如果您使用配置类而不是 servlet-config.xml 那么您必须这样做

类级别的@ComponentScan