获取ApplicationContext实例的方式：
1.实现ApplicationContextAware接口
新增自定义类，并实现ApplicationContextAware接口，Spring加载该类时会自动调用setApplicationContext方法。
import org.springframework.beans.BeansException; import org.springframework.context.ApplicationContext; import org.springframework.context.ApplicationContextAware; import org.springframework.stereotype.Component; @Component public class ApplicationUtil implements ApplicationContextAware{ public static ApplicationContext applicationContext; @Override public void setApplicationContext(ApplicationContext applicationContext) throws BeansException { // TODO Auto-generated method stub this.applicationContext = applicationContext; } }