《Pro Spring》学习笔记之Bean销往回调方法destroy-method

使用实现了ConfigurableListableBeanFactory接口的XmlBeanFactory ，可以使用destroySingletons方法通知销毁所有的singleton实例，这时候，如果我们为bean定义了destroy-methd属性，就会进行调用，我们可以在其中进行一些收尾的工作

SimpleBean.java

 

package ch5.destroy;

import org.springframework.beans.factory.InitializingBean;

public class SimpleBean implements InitializingBean ...{
  public void afterPropertiesSet() throws Exception ...{
        System.out.println("this is info from afterpropertiesSet from SimpleBean");
    }
private  String name;
  private String sex;
  private String age;
  public void destroy()...{
      System.out.println("this is info from destroy method");
  }
public String getAge() ...{
    return age;
}
public void setAge(String age) ...{
    this.age = age;
}
public String getName() ...{
    return name;
}
public void setName(String name) ...{
    this.name = name;
}
public String getSex() ...{
    return sex;
}
public void setSex(String sex) ...{
    this.sex = sex;
}
}

 

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-2.0.xsd">

<bean id="SimpleBean" class="ch5.destroy.SimpleBean" destroy-method="destroy">
<property name="name">
    <value>gaoxiang</value>
  </property>
<property name="sex">
   <value>male</value>
</property>
<property name="age">
    <value>26</value>
  </property>
</bean>


</beans>

 

测试代码：

 

package ch5.destroy;

import java.io.File;

import org.springframework.beans.factory.BeanFactory;
import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.beans.factory.support.BeanDefinitionRegistry;
import org.springframework.beans.factory.xml.XmlBeanFactory;
import org.springframework.core.io.FileSystemResource;

public class TestSpring...{
  public static void main(String args[])  throws Exception...{
      //获取bean factory
      ConfigurableListableBeanFactory factory=(ConfigurableListableBeanFactory)getBeanFactory();  //使用子beanFactory
     
     
      SimpleBean bean1=(SimpleBean)factory.getBean("SimpleBean");
      
      System.out.println("before destroy");
      factory.destroySingletons();
      System.out.println("after destory");
    
  }
  public static BeanFactory getBeanFactory()...{
      //获取bean factory
      String realpath="";
   
         //加载配置项
      realpath=System.getProperty("user.dir")+File.separator+"src"+File.separator+"ch5/destroy"+File.separator+"applicationContext.xml";
  
     
      ConfigurableListableBeanFactory  factory=new XmlBeanFactory(new FileSystemResource(realpath));
      
      return factory;
  }
}

 

运行结果：

this is info from afterpropertiesSet from SimpleBean
before destroy
this is info from destroy method
after destory