详解Spring中InitializingBean接口的功能

import org.springframework.beans.factory.InitializingBean;

import org.springframework.stereotype.Service;

public class InitBean implements InitializingBean{

     public void afterPropertiesSet() throws Exception {

        System.out.println( "启动时自动执行 afterPropertiesSet..." );

     }

     public void init(){

         System.out.println( "init method..." );

     }

}　

---配置文件-----

<?xml version= "1.0" encoding= "UTF-8" ?>

<beans xmlns= "http://HdhCmsTestspringframework.org/schema/beans"

     xmlns:xsi= "http://HdhCmsTestw3.org/2001/XMLSchema-instance"

     xmlns:context= "http://HdhCmsTestspringframework.org/schema/context"

     xmlns:dubbo= "http://code.alibabatech测试数据/schema/dubbo"

     xmlns:mvc= "http://HdhCmsTestspringframework.org/schema/mvc"

     xmlns:aop= "http://HdhCmsTestspringframework.org/schema/aop"

     xmlns:tx= "http://HdhCmsTestspringframework.org/schema/tx"

     xsi:schemaLocation=

     "http: //HdhCmsTestspringframework.org/schema/beans http://HdhCmsTestspringframework.org/schema/beans/spring-beans-3.2.xsd

      http: //HdhCmsTestspringframework.org/schema/mvc http://HdhCmsTestspringframework.org/schema/mvc/spring-mvc-3.2.xsd

      http: //HdhCmsTestspringframework.org/schema/aop http://HdhCmsTestspringframework.org/schema/aop/spring-aop-3.2.xsd

      http: //HdhCmsTestspringframework.org/schema/tx http://HdhCmsTestspringframework.org/schema/tx/spring-tx-3.2.xsd

      http: //HdhCmsTestspringframework.org/schema/context http://HdhCmsTestspringframework.org/schema/context/spring-context-3.2.xsd

      http: //code.alibabatech测试数据/schema/dubbo http://code.alibabatech测试数据/schema/dubbo/dubbo.xsd"

      default -lazy-init= "true" >

     <bean id= "initBean"   class = "com.java265.InitBean" init-method= "init" > </bean>

</beans>　　

---main程序----

import org.springframework.context.ApplicationContext;

import org.springframework.context.support.FileSystemXmlApplicationContext;

public class Main {

     public static void main(String[] args) {

         ApplicationContext context = new

                 FileSystemXmlApplicationContext( "classpath:/applicationContext-core.xml" );

         context.getBean( "initBean" );

     }

}　　

-----运行以上代码，将输出以下信息---------

  启动时自动执行 afterPropertiesSet...

init method...