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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