1. 定義Fish實體類

/**
 * @author 70KG
 * @Title: Fish
 * @Description:
 * @date 2018/7/22下午5:00
 * @From www.nmyswls.com
 */
@Data
public class Fish {

    private String name;

    private int age;

    public Fish(){}

    public Fish(String name, int age) {
        this.name = name;
        
 
this.age = age;
    }

}

2. 實現FactoryBean來注入實體類

/**
 * @author 70KG
 * @Title: FactoryBeanRegist
 * @Description:
 * @date 2018/7/22下午8:06
 * @From www.nmyswls.com
 */
public class FactoryBeanRegist implements FactoryBean<Fish> {

    @Override
    public Fish getObject() throws Exception {
        
 
return new Fish();
    }

    @Override
    public Class<?> getObjectType() {
        return Fish.class;
    }

    @Override
    public boolean isSingleton() {
        return true;
    }
}

3. 編寫配置類

/**
 * @author 70KG
 * @Title: FactoryBeanConfig
 * @Description:
 * @date 2018/7/22下午8:21
 * @From www.nmyswls.com
 
 
*/
@Configuration
public class FactoryBeanConfig {

    @Bean
    public FactoryBeanRegist getBean() {
        return new FactoryBeanRegist();
    }

}

4. 測試

/**
 * @author 70KG
 * @Title: FactoryBean的測試類
 * @Description:
 * @date 2018/7/22下午8:22
 * @From www.nmyswls.com
 */
public class Test01 {

    @Test
    public void test() {

        AnnotationConfigApplicationContext ac = new AnnotationConfigApplicationContext(FactoryBeanConfig.class);
        // 不加"&"獲取到的是FactoryBean中的例項
        Object getBean1 = ac.getBean("getBean");
        // 加"&"獲取到的是實現了FactoryBean介面的FactoryBeanRegist本身
        Object getBean2 = ac.getBean("&getBean");
        System.out.println(getBean1.getClass());
        System.out.println(getBean2.getClass());

    }

}

5. 測試結果

class com.nmys.story.springCore.springioc.importBean.Fish
class com.nmys.story.springCore.springioc.factoryBean.FactoryBeanRegist