spring获取bean（自定义工具类）

@Component
public class SpringContextUtil implements BeanFactoryAware {
    private static BeanFactory beanFactory;
    private final static Logger LOG = LoggerFactory.getLogger(SpringContextUtil.class);

    @Override
    public void setBeanFactory(BeanFactory beanFactory) throws BeansException {
        SpringContextUtil.beanFactory = beanFactory;
    }


    public static <T> T getBean(String beanName) {
        if (null != beanFactory) {
            return (T) beanFactory.getBean(beanName);
        }
        return null;
    }

}