SpringBoot 如何处理同一个接口有多个实现类

例子：

public interface IFileService {
    String upload(String fileName);
}

注解实现

通过 @Autowired 和 @Qualifier 配合注入

@Autowired
@Qualifier("interface1Impl1")
IFileService fileService;    //正常启动

使用 @Resource 注入，根据默认类名区分

@Resource(name = "interface1Impl1")
IFileService fileService;    //正常启动

使用 @Resource 注入，根据 @Service 指定的名称区分

@Resource(name = "s1")
IFileService fileService;    //正常启动

配置实现

@Component("SsoConfig")
@ConfigurationProperties(prefix = "sso")
@Data
public class SsoConfig {
    private UploadType type = SsoType.AWS;
}
public enum SsoType {
    AWS,
    ALIYUN
}

@Configuration
@ConditionalOnProperty(name="sso.type",havingValue = "AWS")
@Service
public class AwsFileServiceImpl implements IFileService {
    public String upload(String fileName) {
        // AWS文件上传业务逻辑
        return null;
    }
}
@Configuration
@ConditionalOnProperty(name="sso.type",havingValue = "ALIYUN")
@Service
public class AliyunFileServiceImpl implements IFileService {
    public String upload(String fileName) {
        // ALIYUN 文件上传业务逻辑
        return null;
    }
}

sso: 
  type: aws