在spring容器中定义初始化和销毁bean前所做的操作，有三种方式

package com.luoq.test.annotation.init;

import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;

public class TestBean {
  
    private String  message;

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }
    
    @PostConstruct
    public void  init(){
        System.out.println("I‘m  init  method  using  @PostConstrut...."+message);
    }
    
    @PreDestroy
    public void  dostory(){
        System.out.println("I‘m  destory method  using  @PreDestroy....."+message);
    }
    
}