Spring Boot配置文件不选择属性文件

Question

我们正在开发Spring Boot2.1.6，我们需要在应用程序中实现Spring Boot profile

我们的项目中目前有两个属性文件application.properties和bucket.properties(s3配置）文件。

<bean id="applicationProperties"
        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer" >
        <property name="locations" >
            <list>
                <value>classpath:application-${spring.profiles.active:dev}.properties</value>
                <value>classpath:bucket-${spring.profiles.active:dev}.properties</value>
            </list>
        </property>
</bean>

上面的配置工作正常，spring boot能够正确地拾取文件。

但是我想在资源文件夹中创建以下类型的文件夹结构来正确地隔离文件。

|
resources
        |dev
            |
            application-dev.properties  
            bucket-dev.properties

一旦这样做，我就在上面的PropertyPlaceholderConfigurer中做了如下所示的更改。

<bean id="applicationProperties"
        class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer" >
        <property name="locations" >
            <list>
                <value>classpath:${spring.profiles.active}/application-${spring.profiles.active:dev}.properties</value>
                <value>classpath:${spring.profiles.active}/bucket-${spring.profiles.active:dev}.properties</value>
            </list>
        </property>
</bean>

Answer 1

Springboot不会开箱即用，但您可以使用PropertySourcesPlaceHolderConfigurer来完成此操作。

@Configuration
public class PropertyFileLoaderConfig {

    private static final Logger LOG = LoggerFactory.getLogger(PropertyFileLoaderConfig.class);

    private static final String PROFILE_DEV = "dev";
    private static final String PROFILE_STAGE = "stage";
    private static final String PROFILE_PROD = "prod";

    private static final String PATH_TEMPLATE = "classpath*:%s/*.properties";

    @Bean
    @Profile(PROFILE_DEV)
    public static PropertySourcesPlaceholderConfigurer devPropertyPlaceholderConfigurer() throws IOException {
        LOG.info("Initializing {} properties.", PROFILE_DEV);
        PropertySourcesPlaceholderConfigurer configurer = new PropertySourcesPlaceholderConfigurer();
        configurer.setLocations(new PathMatchingResourcePatternResolver().getResources(getResourcesFromPath(PROFILE_DEV)));//Loads all properties files from the path
        configurer.setIgnoreUnresolvablePlaceholders(true);

        return configurer;
    }

    @Bean
    @Profile(PROFILE_STAGE)
    public static PropertySourcesPlaceholderConfigurer stagePropertyPlaceholderConfigurer() throws IOException {
        LOG.info("Initializing {} properties.", PROFILE_STAGE);
        PropertySourcesPlaceholderConfigurer configurer = new PropertySourcesPlaceholderConfigurer();
        configurer.setLocations(new PathMatchingResourcePatternResolver().getResources(getResourcesFromPath(PROFILE_STAGE)));

        return configurer;
    }

    @Bean
    @Profile(PROFILE_PROD )
    public static PropertySourcesPlaceholderConfigurer prodPropertyPlaceholderConfigurer() throws IOException {
        LOG.info("Initializing {} properties.", PROFILE_PROD );
        PropertySourcesPlaceholderConfigurer configurer = new PropertySourcesPlaceholderConfigurer();
        configurer.setLocations(new PathMatchingResourcePatternResolver().getResources(getResourcesFromPath(PROFILE_PROD )));

        return configurer;
    }

    private static String getResourcesFromPath(String path) {
        return PATH_TEMPLATE.replaceFirst("%s", path);
    }
}