开发框架Spring技巧之活用FactoryBean

import java.util.Date;
import org.springframework.beans.factory.FactoryBean;
public class FactoryBeanDemo implements FactoryBean {
private String name;
public void setName(String name)
{
this.name=name;
}
public Object getObject() throws Exception {
if("date".equals(name))return new Date();
else return new String("这是一个字符串!");
}
public Class getObjectType() {
return "date".equals(name)?Date.class:String.class;
}
public boolean isSingleton() {
return false;
}
}

Resource res=new ClassPathResource("springroad/deomo/chap4/demo-bean.xml");
BeanFactory factory=new XmlBeanFactory(res);
System.out.println(factory.getBean("myFactoryBean").getClass());
System.out.println(factory.getBean("myFactoryBean1").getClass());

class java.lang.String
class java.util.Date

 System.out.println(factory.getBean("&myFactoryBean").getClass());
System.out.println(factory.getBean("&myFactoryBean1").getClass());

  class springroad.deomo.chap4.FactoryBeanDemo
class springroad.deomo.chap4.FactoryBeanDemo