如何在Spring应用程序开始时调用自定义数据加载程序

Question

我正在尝试将某些数据加载到应用程序开始时的数据库中。我有一个为此目的定义的豆

ApplicationContext.xml

<bean class="com.project.loader.DataLoader" 
id="DataLoader" 
depends-on="entityManagerFactory" 
scope="singleton"/>

类：

@RooJavaBean
@RooConfigurable
public class DataLoader implements InitializingBean

它正在执行，但是在第一个persist（）方法是呼叫的情况下，春季给我带来了错误：

Caused by: java.lang.IllegalStateException: Entity manager has not been injected (is the Spring Aspects JAR configured as an AJC/AJDT aspects library?)
at com.project.lib.model.extensions.i18n.Locale_Roo_Jpa_ActiveRecord.entityManager_aroundBody0(Locale_Roo_Jpa_ActiveRecord.aj:19)
at com.project.lib.model.extensions.i18n.Locale_Roo_Jpa_ActiveRecord.ajc$interMethod$com_project_lib_model_extensions_i18n_Locale_Roo_Jpa_ActiveRecord$com_project_lib_model_extensions_i18n_Locale$entityManager(Locale_Roo_Jpa_ActiveRecord.aj:1)
at com.project.lib.model.extensions.i18n.Locale.entityManager(Locale.java:1)

以下方式定义数据加载程序时，它以前正在工作：

@Component
@Configurable
public class DataLoader implements ApplicationListener

但是使用RAW类型不是很好的练习，所以我想切换

我该如何使它起作用？

春季版：3.1

Answer 1

过去，我已经通过将组件 - 扫描定义转移到应用程序上下文的末尾来解决此问题，如下所示

Answer 2

我使用spring smartlifecycle：http://static.springsource.org/spring/docs/3.0.x/javadoc-api/org/springframework/context/context/smartlifecycle.html

我已经创建了一个很好的类，可以扩展并覆盖运行方法：

public abstract class StartupService implements SmartLifecycle {
/** Logger for this class and subclasses */
protected static final Logger logger = LoggerFactory.getLogger(StartupService.class);
protected boolean running=false;
////////////////////// Lifecycle Methods \\\\\\\\\
@Override
public void start() {
    try {
        logger.info("starting {}", this.getClass().getSimpleName());
        run();
    } catch (Exception e) {
        logger.error("failed to run importer", e);
    }
}
@Override
public void stop() {
    running=false;
}
@Override
public boolean isRunning() {
    return running;
}
////////////////////// SmartLifecycle Methods \\\\\\\\\
@Override
public boolean isAutoStartup() {
    return true;
}
@Override
public void stop(Runnable callback) {
    stop();
    callback.run();
}
@Override
public int getPhase() {
    return 0;
}
public abstract void run() throws Exception;
}