本文转自：https://www.cnblogs.com/yql1986/p/4084888.html
package org.test.InitializingBean;
2
3 import org.springframework.context.support.ClassPathXmlApplicationContext;
4
5 /**
6 * 测试 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 默认的构造函数执行了");
14 }
15
16 @Override
17 public void afterPropertiesSet() throws Exception {
18 System.out.println(">>>>>>> 执行了 afterPropertiesSet 方法");
19
20 }
21
22 }
执行的结果如下图所示。可以看到当执行完User默认的构造函数之后，就会调用该类实现afterPropertiesSet方法