我遇到了一个非常奇怪的错误,我无法理解。简而言之:我有一个 ImporterBean,它应该读取一个 xml 文件然后做一些事情。ImporterBean 由 ImporterKicker “启动”,但是当我启动应用程序时 ImporterBean 类中的 ApplicationBean 和 EntityManager 为空。它们没有注入到那个 bean 中。在 KickerBean 中,正确注入了 ImporterBean 和 ApplicationBean。
请参阅下面的代码,请告诉我我做错了什么(使用接缝 SEAM 2.2.1.CR2)。
@SuppressWarnings({"UnusedDeclaration"})
@Name("importerBean")
@AutoCreate
public class ImporterBean {
private static final FilenameFilter ONLY_XML_FILES = (FilenameFilter) new SuffixFileFilter(".xml");
public static final String IN_DIR = "IN";
public static final String ERROR_DIR = "ERROR";
public static final String PROCESSED_DIR = "PROCESSED";
@In(create = true)
public ApplicationBean applicationBean;
@In
private EntityManager entityManager;
@Asynchronous
@Transactional
public void runImport(@Duration long firstStart, @IntervalDuration long startTimer) {
log.info("<118100>");
File inDir = Doing some file stuff...
}
} catch (Exception e) {
e.printStackTrace();
}
}
}
/**
* Inner class bean to kick the background tasks.
*/
@Startup
@Scope(APPLICATION)
@Name("importerKicker")
public static class ImporterKicker {
@In(create = true)
public ImporterBean importerBean;
@In(create = true)
public ApplicationBean applicationBean;
@Create
public void scheduleOptimizer() {
final int interval = applicationBean.getImporter118checkInterval();
if (interval != 0) {
importerBean.runImport(30 * MILLIS_PER_SECOND, interval * MILLIS_PER_SECOND);
} else {
}
}
}
}