Cannot load a profile specific properties file with Spring Boot

Question

I'm trying to use @Value to load properties from profile specific properties files under resources dir, but I'm getting "could not resolve propertyPlaceHolder". Below is my code.

@ComponentScan(basePackages="com.my.package")
@Import({DevConfig.class,QAConfig.class}
@SpringBootApplicaton()
public class Config(){
   @Value("${someProperty"})
   private String property;

   @Bean
   public void getProperty(){
     return property;
   }
   //other beans
}

DevConfig.java

@Configuration
@Profile("dev")
public class DevConfig {
    @Bean
    public static PropertyPlaceholderConfigurer properties() {
    PropertyPlaceholderConfigurer ppc = new PropertyPlaceholderConfigurer();
    Resource[] resources = new ClassPathResource[] { new ClassPathResource("dev/application-dev.properties") };
    ppc.setLocations(resources);
    ppc.setIgnoreUnresolvablePlaceholders(true);
    return ppc;
    }
}

MainClass

public class Main {
    public static void main(String args[]) {
        ApplicationContext context = new AnnotationConfigApplicationContext(Config.class);

        SomeBean bean = context.get("beanName",SomeBean.class);
        //logic follows
    }
}

I do this because I need to run this as a standalone app.I know something is wrong with this but I don't know what.

Answer 1

With Spring Boot a PropertyPlaceholderConfigurer is created for you automatically.

If you wish to define a custom location for your properties file(s) you can use the following annotation.

@PropertySource("classpath:foo.properties")

(Just add the annotation on class level to your configuration class, it is also Spring profile aware - different locations for different environments.)

Answer 2

尝试直接在src/main/resources内部移动dev/application-dev.properties