【20200214】SpringBoot 全局变量 ApplicationContextAware

@Configuration
public class SpringContextUtil implements ApplicationContextAware {
    private static ApplicationContext applicationContext;
    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        SpringContextUtil.applicationContext = applicationContext;
    }
    public static ApplicationContext getCtx() {
        return SpringContextUtil.applicationContext;
    }
    public static <T> T getBean(Class<T> t) {
        return SpringContextUtil.applicationContext.getBean(t);
    }
}