获取Spring应用程序上下文

public class MyApplicationListener implements ApplicationListener<ContextRefreshedEvent> {
    @Override
    public void onApplicationEvent(ContextRefreshedEvent event) {
        ApplicationContext context = event.getApplicationContext();
        // 在这里可以使用上下文
    }
}

@Autowired
private ApplicationContext context;

public class SpringContextUtil implements ApplicationContextAware {
    private static ApplicationContext context;

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

    public static ApplicationContext getApplicationContext() {
        return context;
    }
}

Object bean = context.getBean("beanName");

MyBean bean = context.getBean(MyBean.class);

Map<String, MyBean> beans = context.getBeansOfType(MyBean.class);

boolean containsBean = context.containsBean("beanName");

boolean isSingleton = context.isSingleton("beanName");

boolean isPrototype = context.isPrototype("beanName");

Class<?> type = context.getType("beanName");

String[] aliases = context.getAliases("beanName");

String[] dependencies = context.getDependenciesForBean("beanName");

context.registerBeanDefinition("beanName", beanDefinition);

context.destroyBean("beanName");