BeanNameAware和BeanFactoryAware接口

平时写代码很少去实现这两个接口，这里只是做下了解，方便读Spring源码。

BeanNameAware接口作用：让Bean对Name或id有知觉

package com.example.demo.biz.service;

import org.springframework.beans.factory.BeanNameAware;

import org.springframework.stereotype.Service;

/**

 * BeanNameAware作用：让Bean对Name有知觉

 */

@Service

public class BizService implements BeanNameAware {

    private String beanName;

    @Override

    public void setBeanName(String s) {

        this.beanName = s;

    }

    public String getBeanName() {

        return beanName;

    }

}

测试

package com.example.demo.biz.service;

import org.junit.Test;

import org.junit.runner.RunWith;

import org.springframework.boot.test.context.SpringBootTest;

import org.springframework.test.context.junit4.SpringRunner;

import javax.annotation.Resource;

@RunWith(SpringRunner.class)

@SpringBootTest

public class BeanNameAwareTest {

    @Resource

    private BizService bizService;

    @Test

    public void test1(){

        System.out.println(bizService.getBeanName());

    }

}

结果：

 BeanFactoryAware接口：让Bean获取配置他们的BeanFactory的引用。

修改下上面的例子

package com.example.demo.biz.service;

import org.springframework.beans.BeansException;

import org.springframework.beans.factory.BeanFactory;

import org.springframework.beans.factory.BeanFactoryAware;

import org.springframework.beans.factory.BeanNameAware;

import org.springframework.stereotype.Service;

/**

 * BeanNameAware作用：让Bean对Name有知觉

 */

@Service

public class BizService implements BeanNameAware, BeanFactoryAware {

    private String beanName;

    private BeanFactory factory;

    @Override

    public void setBeanName(String s) {

        this.beanName = s;

    }

    public String getBeanName() {

        return beanName;

    }

    @Override

    public void setBeanFactory(BeanFactory beanFactory) throws BeansException {

        this.factory = beanFactory;

    }

    public BeanFactory getFactory() {

        return factory;

    }

    @Override

    public String toString() {

        return "----------------------->";

    }

}

    @Test

    public void test2(){

        System.out.println(bizService.getFactory().getBean(bizService.getBeanName()));

    }