spring配置文件中bean标签中init-method和destroy-method和用注解方式配置

Person类

public class Person {
	private int i = 0;

	public Person(){
		System.out.println("实例化一个对象");
	}
	
	public void init(){
		System.out.println("调用初始化方法....");
	}
	
	public void destory222(){
		System.out.println("调用销毁化方法....");
	}
}

applicationContext.xml



					
	


测试类:

public class Test {
	public static void main(String[] args) {
		//如果要调用销毁方法必须用子类来声明,而不是ApplicationContext,因为ApplicationContext没有close()
		ClassPathXmlApplicationContext ac = new ClassPathXmlApplicationContext("com/xxc/initAndDestory/applicationContext.xml");
		Person p1 = (Person)ac.getBean("person");
		Person p2 = (Person)ac.getBean("person");
		ac.close();
	}
}




如果用注解方式配置:

applicationContext.xml


  
							
	 
							
	
	

Person类

public class Person {
	private int i = 0;

	public Person(){
		System.out.println("实例化一个对象");
	}
	@PostConstruct //初始化方法的注解方式  等同与init-method=init
	public void init(){
		System.out.println("调用初始化方法....");
	}
	@PreDestroy	//销毁方法的注解方式  等同于destory-method=destory222
	public void destory(){
		System.out.println("调用销毁化方法....");
	}
}




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