package cn.cutter.start.bean;

import org.springframework.beans.factory.FactoryBean;

import org.springframework.stereotype.Component;

@Component

public class NextDayDateFactoryBean implements FactoryBean {

    private int count = 0;

    @Override

    public Object getObject() throws Exception {

        MyObject mo = new MyObject();

        mo.setName("num:" + count++);

        return mo;

    }

    @Override

    public Class getObjectType() {

        return MyObject.class;

    }

    @Override

    public boolean isSingleton() {

        return false;

    }

}

@Test

    public void test3() {

        //测试spring的IOC容器中，默认是保持在IOC容器中只有一个实例

        ApplicationContext ctx = new ClassPathXmlApplicationContext("classpath:application-bean.xml");

        //使用spring的factorybean

        //这里注意了，我们返回的对象不是NextDayDateFactoryBean，而是MyObject，很关键 ！！！！

        MyObject mo1 = (MyObject) ctx.getBean("nextDayDateFactoryBean");

        System.out.println("mo name is:" + mo1.getName());

        MyObject mo2 = (MyObject) ctx.getBean("nextDayDateFactoryBean");

        System.out.println("mo name is:" + mo2.getName());

        MyObject mo3 = (MyObject) ctx.getBean("nextDayDateFactoryBean");

        System.out.println("mo name is:" + mo3.getName());

        MyObject mo4 = (MyObject) ctx.getBean("nextDayDateFactoryBean");

        System.out.println("mo name is:" + mo4.getName());

    }