@Component("myComponent")
public class MyComponent implements ApplicationContextAware,BeanNameAware{
private ApplicationContext applicationContext;
private String beanName;
@Override
public void setApplicationContext(ApplicationContext applicationContext) throws BeansException {
System.out.println("000000"+applicationContext);
this.applicationContext=applicationContext;
}
@Override
public void setBeanName(String name) {
System.out.println("当前bean的name"+name);
this.beanName=name;
}
}
ApplicationContext context=new AnnotationConfigApplicationContext(MyConfig.class);
ConfigurableEnvironment environment= (ConfigurableEnvironment) context.getEnvironment();
environment.setActiveProfiles("myBanana");
原因：其中AnnotationConfigApplicationContext 有一个刷新refresh()操作，会将我们设置的一些参数还原。
流程调整：未激活——>激活 （刷新点：配置类的编写处）——>刷新
ApplicationContext context=new AnnotationConfigApplicationContext();
ConfigurableEnvironment environment= (ConfigurableEnvironment) context.getEnvironment();
environment.setActiveProfiles("myApple");
//保存点
((AnnotationConfigApplicationContext)context).register(MyConfig.class);
((AnnotationConfigApplicationContext) context).refresh();
IOC容器使用时必须进行刷新：有参构造，自动刷新；无参构造，手动刷新。
Spring9——通过用Aware接口使用Spring底层组件、环境切换
原文：https://www.cnblogs.com/ghlz/p/13203670.html