启动时添加

@SpringBootApplication
public class MyApplication {

    public static ConfigurableApplicationContext context;

    public static void main(String[] args) {

        MesApplication.context = SpringApplication.run(MyApplication.class, args);

    }
}

注入

@Component
public class MySpringBean<T> implements ApplicationContextAware {

    private static ApplicationContext applicationContext;

    @Override
    public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
        MySpringBean.applicationContext = applicationContext;
    }

    public static <T> T  getBean(Class<T> clazz) {
        return applicationContext != null?applicationContext.getBean(clazz):null;
    }

    public static Object getBeanByString(String beanName) throws BeansException {
        return applicationContext.getBean(beanName);
    }

}