出现以下错误：

Description:

Field photoAlbum in com.example.pet2.controller.AlbumController required a bean of type 'com.example.pet2.pojo.PhotoAlbum' that could not be found.

The injection point has the following annotations:
	- @org.springframework.beans.factory.annotation.Autowired(required=true)


Action:

Consider defining a bean of type 'com.example.pet2.pojo.PhotoAlbum' in your configuration.

解决办法：

        在该实体类上添加@Component注解

@Data
@Component
public class PhotoAlbum {
    private Integer picId;

    private String picName;

    private String picture;
}