spring强行注入和引用实例解析

public class DataProviderManagerImpl implements ApplicationContextAware
@Override
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
this.applicationContext = applicationContext;
}

if (provider instanceof InitializingBean) {
((InitializingBean) provider).afterPropertiesSet();
}
applicationContext.getAutowireCapableBeanFactory().autowireBean(provider);

InnerAggregator innerAggregator = applicationContext.getBean(H2Aggregator.class);