Spring Boot找不到特定于配置文件的属性文件

Question

我正在关注Spring documentation，以便为我的SpringBoot应用程序使用特定于配置文件的属性文件。我在src/main/resources下有2个属性文件：datasource.properties用于本地开发，datasource-prod.properties用于服务器数据源配置。

这是我的DataSourceConfiguration.java配置类：

@Configuration
@PropertySource("classpath:datasource-{profile}.properties")
@Slf4j
public class DataSourceConfiguration {

    @Value("${flad.datasource.driver}")
    private String dataSourceDriverClassName;
    @Value("${flad.datasource.url}")
    private String dataSourceUrl;
    @Value("${flad.datasource.username}")
    private String dataSourceUsername;
    @Value("${flad.datasource.password}")
    private String dataSourcePassword;

    @Bean
    public DataSource getDataBase(){
        log.info("Datasource URL = {}", dataSourceUrl);
        return DataSourceBuilder
                .create()
                .driverClassName(dataSourceDriverClassName)
                .url(dataSourceUrl)
                .username(dataSourceUsername)
                .password(dataSourcePassword)
                .build();
    }
}

启动SpringBootApplication主类时，无论是否使用-Dspring.profiles.active=prod，我都会收到以下错误消息：

17:05:49.008 [restartedMain] ERROR org.springframework.boot.SpringApplication - Application run failed
org.springframework.beans.factory.BeanDefinitionStoreException: Failed to process import candidates for configuration class [fr.payet.flad.core.config.CoreConfig]; nested exception is java.io.FileNotFoundException: class path resource [datasource-{profile}.properties] cannot be opened because it does not exist