深入理解Spring中bean的生命周期介绍

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

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);
    
  }
}

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;
  }

}

applicationcontext.xml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"
  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>

main.java

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());
  }
}

2.以spring factory装配bean为例：

（1）.生命周期图：

　　

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