1.以ApplocationContext上下文单例模式装配bean为例,深入探讨bean的生命周期:
(1).生命周期图:
(2).具体事例:
person类实现BeanNameAware,BeanFactoryAware接口
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public class Person implements BeanNameAware ,BeanFactoryAware{
private String name;
public Person(){
System.out.println( "调用构造器为属性值初始化" );
}
public String getName() {
return name;
}
public void setName(String name) {
this .name = name;
}
@Override
public void setBeanName(String arg0) {
// TODO Auto-generated method stub
System.out.println( "获取beanName id值" + " " +arg0);
}
@Override
public void setBeanFactory(BeanFactory arg0) throws BeansException {
// TODO Auto-generated method stub
System.out.println( "获取BeanFactory" + " " +arg0);
}
}
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public class MyBeanPostProcessor implements BeanPostProcessor{
@Override
public Object postProcessAfterInitialization(Object arg0, String arg1) throws BeansException {
// TODO Auto-generated method stub
System.out.println( "调用postProcessAfterInitialization" );
return arg0;
}
@Override
public Object postProcessBeforeInitialization(Object arg0, String arg1) throws BeansException {
// TODO Auto-generated method stub
System.out.println( "调用postProcessBeforeInitialization" );
return arg0;
}
}
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ApplicationContext.xml配置文件:
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<? xml version = "1.0" encoding = "UTF-8" ?>
< beans xmlns = "http://www.springframework.org/schema/beans"
xmlns:xsi = "http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation = "http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd" >
<!-- bean的配置文件 -->
< bean id = "person" class = "org.jingdong.bean.life.Person" >
< property name = "name" value = "grl" ></ property >
</ bean >
< bean id = "myBeanPostProcessor" class = "org.jingdong.bean.life.MyBeanPostProcessor" ></ bean >
</ beans >
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Main.java
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public class Main {
public static void main(String[] args) {
// 创建IOC容器
ApplicationContext ac = new ClassPathXmlApplicationContext( "org/jingdong/bean/life/applicationContext.xml" );
//从容器中获取bean实例
Person person = (Person) ac.getBean( "person" );
//使用bean
System.out.println(person.getName());
}
}
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2.以Spring Factory装配bean为例:
(1).生命周期图:
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:http://www.cnblogs.com/grl214/p/6623575.html