SpringBoot 2.x 사용자 정의 응용 프로그램.properties 매개 변수 설정

upload.pictures.uploadPath=file:./pictures #      src     
upload.pictures.anonymousPicture=classpath:/images/anonymous.png

@ConfigurationProperties(prefix = "upload.pictures")
public class PictureUploadProperties {
    private Resource uploadPath;
    private Resource anonymousPicture;

    public Resource getUploadPath() {
        return uploadPath;
    }
    
    //       uploadPath         ，    set       
    public void setUploadPath(String uploadPath) throws IOException {
        this.uploadPath = new DefaultResourceLoader().getResource(uploadPath);
        if (!this.uploadPath.getFile().isDirectory()) {
            throw new IOException("Directory " + uploadPath + " does not exist");
        }
    }

    public Resource getAnonymousPicture() {
        return anonymousPicture;
    }
    
    public void setAnonymousPicture(String anonymousPicture) throws IOException {
        this.anonymousPicture = new DefaultResourceLoader().getResource(anonymousPicture);
        if (!this.anonymousPicture.getFile().isFile()) {
            throw new IOException("File " + anonymousPicture + " does not exist");
        }
    }
}

@SpringBootApplication
@EnableConfigurationProperties({PictureUploadProperties.class})
public class MasterSpringMvcApplication {

    public static void main(String[] args) {
        SpringApplication.run(MasterSpringMvcApplication.class, args);
    }

}