关于在spring 容器初始化 bean 和销毁前所做的操作定义方式有三种：
第一种：通过@PostConstruct 和 @PreDestroy 方法 实现初始化和销毁bean之前进行的操作
第二种是：通过 在xml中定义init-method 和 destory-method方法
第三种是： 通过bean实现InitializingBean和 DisposableBean接口
1：定义相应类实现InitializingBean ,DisposableBean 接口
package com.myapp.core.annotation.init;
import javax.annotation.PostConstruct;
import javax.annotation.PreDestroy;
import org.springframework.beans.factory.DisposableBean;
import org.springframework.beans.factory.InitializingBean;
public class PersonService implements InitializingBean,DisposableBean{
private String message;
public String getMessage() {
return message;
}
public void setMessage(String message) {
this.message = message;
}
@Override
public void destroy() throws Exception {
// TODO Auto-generated method stub
System.out.println("I'm init method using implements InitializingBean interface...."+message);
}
@Override
public void afterPropertiesSet() throws Exception {
// TODO Auto-generated method stub
System.out.println("I'm init method using implements DisposableBean interface...."+message);
}
}
2：定义相应的配置文件:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.1.xsd">
<!-- <context:component-scan base-package="com.myapp.core.jsr330"/> -->
<!-- <context:annotation-config /> -->
<!-- <bean class="org.springframework.context.annotation.CommonAnnotationBeanPostProcessor" />
<bean id="personService" class="com.myapp.core.annotation.init.PersonService">
<property name="message" value="123"></property>
</bean>
-->
<bean id="personService" class="com.myapp.core.annotation.init.PersonService">
<property name="message" value="123"></property>
</bean>
</beans>
3：测试类：
package com.myapp.core.annotation.init;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class MainTest {
public static void main(String[] args) {
AbstractApplicationContext context = new ClassPathXmlApplicationContext("resource/annotation.xml");
PersonService personService = (PersonService)context.getBean("personService");
context.registerShutdownHook();
}
}
4：输出测试结果：
I'm init method using implements DisposableBean interface....123
三月 16, 2013 5:06:34 下午 org.springframework.context.support.AbstractApplicationContext doClose
INFO: Closing org.springframework.context.support.ClassPathXmlApplicationContext@205756: startup date [Sat Mar 16 17:06:30 CST 2013]; root of context hierarchy
I'm init method using implements InitializingBean interface....123
over