Spring框架中InitializingBean執行順序

package org.test.InitializingBean;

import org.springframework.context.support.ClassPathXmlApplicationContext;

/**
 * 測試 spring的 InitializingBean 接口
 * @author Administrator
 *
 */
public class InitializingBeanTest {

    /**
     * @param args
     */
    public static void main(String[] args) {
        
        ClassPathXmlApplicationContext ctx=new ClassPathXmlApplicationContext("applicationContext.xml", 
                InitializingBeanTest.class);
        ctx.start();

    }

}

package org.test.InitializingBean;

import org.springframework.beans.factory.InitializingBean;

/**
 * @see {@link org.springframework.beans.factory.InitializingBean#afterPropertiesSet}
 * @author Administrator
 *
 */
public class User implements InitializingBean {

    public User() {
        System.out.println(">>>>>>> User 默認的構造函數執行了");
    }
        
    @Override
    public void afterPropertiesSet() throws Exception {
        System.out.println(">>>>>>> 執行了 afterPropertiesSet 方法");

    }

}

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