本文轉自：https://www.cnblogs.com/yql1986/p/4084888.html

package org.test.InitializingBean;
 2 
 3 import org.springframework.context.support.ClassPathXmlApplicationContext;
 4 
 5 /**
 6  * 測試 spring的 InitializingBean 接口
 7  * @author Administrator
 8  *
 9  */
10 public class InitializingBeanTest {
11 
12     /**
13      * @param args
14      */
15     public static void main(String[] args) {
16         
17         ClassPathXmlApplicationContext ctx=new ClassPathXmlApplicationContext("applicationContext.xml", 
18                 InitializingBeanTest.class);
19         ctx.start();
20 
21     }
22 
23 }

 1 package org.test.InitializingBean;
 2 
 3 import org.springframework.beans.factory.InitializingBean;
 4 
 5 /**
 6  * @see {@link org.springframework.beans.factory.InitializingBean#afterPropertiesSet}
 7  * @author Administrator
 8  *
 9  */
10 public class User implements InitializingBean {
11 
12     public User() {
13         System.out.println(">>>>>>> User 默認的構造函數執行了");
14     }
15         
16     @Override
17     public void afterPropertiesSet() throws Exception {
18         System.out.println(">>>>>>> 執行了 afterPropertiesSet 方法");
19 
20     }
21 
22 }

執行的結果如下圖所示。可以看到當執行完User默認的構造函數之後，就會調用該類實現afterPropertiesSet方法

Spring框架中InitializingBean執行順序