參考https://blog.csdn.net/xiaolyuh123/article/details/61196044

import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
 
import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.InitializingBean;
 
public class InitBeanAndDestroyBean implements InitializingBean, DisposableBean {
	public String say() {
		return "Hello!" + this.getClass().getName();
	}
 
	public InitBeanAndDestroyBean() {
		System.out.println("執行InitBeanAndDestroyBean構造方法");
	}
 
	@Override
	public void destroy() throws Exception {
		System.out.println("介面-執行InitBeanAndDestroyBeanTest：destroy方法");
	}
 
	@Override
	public void afterPropertiesSet() throws Exception {
		System.out.println("介面-執行InitBeanAndDestroyBeanTest：afterPropertiesSet方法");
	}
 
	@PostConstruct
	public void postConstructstroy() {
		System.out.println("註解-執行InitBeanAndDestroyBeanTest：PostConstruct");
	}
 
	@PreDestroy
	public void preDestroy() {
		System.out.println("註解--執行InitBeanAndDestroyBeanTest：preDestroy方法");
	}
 
	public void initMethod() {
		System.out.println("XML配置-執行InitBeanAndDestroyBeanTest：init-method方法");
	}
 
	public void destroyMethod() {
		System.out.println("XML配置-執行InitBeanAndDestroyBeanTest：destroy-method方法");
	}
}
 

從執行結果可以看出：

Bean在例項化的過程中：Constructor > @PostConstruct >InitializingBean > init-method
Bean在銷燬的過程中：@PreDestroy > DisposableBean > destroy-method