01 spring lookup-mothod 使用

1.背景

其实使用spring BeanDefinitionParseDelegate 进行bean解析时，会获取自己的look-up 标签进行解析 ，所以如何使用look-up 标签呢

2 代码块

User

 
package beans.lookUp;
/**
 * @author lianzheng
 * @date 2019-12-21 23:18
 * @service User
 */
public class User{
    public void showMe(){
        System.out.println("i am user");
    }
}
  

package beans.lookUp;

/**
 * @author lianzheng
 * @date 2019-12-21 23:18
 * @service Teacher
 */
public class Teacher extends User {
    public void showMe() {
        System.out.println("i am teacher");
    }
}

package beans.lookUp;

/**
 * @author lianzheng
 * @date 2019-12-21 23:19
 * @service GetBeanTest
 */
public abstract class GetBeanTest{
    public void showMe(){
        this.getBean().showMe();
    }

    public abstract User getBean();
}