bean依赖属性配置

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bean依赖属性配置

@Data
@ConfigurationProperties(prefix = "cartoon")
public class CartoonProperties {private Cat cat;private  Mouse mouse;
}

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cartoon:cat:name: whatage: 5mouse:name: howage: 6

在这里插入图片描述
这样的话，业务bean无需在读取配置文件的操作了。

在这里插入图片描述 EnableConfigurationProperties来设置关联，在使用时加载bean，不用时不加载

@EnableConfigurationProperties(CartoonProperties.class)//关联注解 强制设置哪一个类成为bean
@Data
public class CartoonCatAndMouse {private Cat cat;private  Mouse mouse;@Autowiredprivate CartoonProperties cartoonProperties;public CartoonCatAndMouse(CartoonProperties cartoonProperties){this.cartoonProperties = cartoonProperties;cat = new Cat();cat.setName(cartoonProperties.getCat()!=null && StringUtils.hasText(cartoonProperties.getCat().getName())?cartoonProperties.getCat().getName():"tom");cat.setAge(cartoonProperties.getCat()!=null && cartoonProperties.getCat().getAge()!=null ?cartoonProperties.getCat().getAge():3);mouse = new Mouse();mouse.setName(cartoonProperties.getMouse()!=null && StringUtils.hasText(cartoonProperties.getMouse().getName())?cartoonProperties.getMouse().getName():"jerry");mouse.setAge(cartoonProperties.getMouse()!=null && cartoonProperties.getMouse().getAge()!=null ?cartoonProperties.getMouse().getAge():4);}public void play(){System.out.println(cat.getAge() + "岁的"+cat.getName()+ "和"+ mouse.getAge()  + "岁的" + mouse.getName() + "打起来了");}
}

也可以把业务类的@Component注解取消
启动时，添加注解@Import(CartoonCatAndMouse.class)，根据需要来配置bean

@SpringBootApplication
@Import(CartoonCatAndMouse.class)
public class Springboot29BeanPropertiesApplication {public static void main(String[] args) {ConfigurableApplicationContext ctx = SpringApplication.run(Springboot29BeanPropertiesApplication.class, args);CartoonCatAndMouse bean = ctx.getBean(CartoonCatAndMouse.class);bean.play();}}