Reading a List from properties file and load with spring annotation @Value

Question

I want to have a list of values in a .properties file, ie:

my.list.of.strings=ABC,CDE,EFG

And to load it in my class directly, ie:

Answer 1

If you are reading this and you are using Spring Boot, you have 1 more option for this feature

Usually comma separated list are very clumsy for real world use case (And sometime not even feasible, if you want to use commas in your config):

email.sendTo=somebody@example.com,somebody2@example.com,somebody3@example.com,.....

With Spring Boot, you can write it like these (Index start at 0):

email.sendTo[0]=somebody@example.com
email.sendTo[1]=somebody2@example.com
email.sendTo[2]=somebody3@example.com

And use it like these:

@Component
@ConfigurationProperties("email")
public class EmailProperties {

    private List sendTo;

    public List getSendTo() {
        return sendTo;
    }

    public void setSendTo(List sendTo) {
        this.sendTo = sendTo;
    }

}


@Component
public class EmailModel {

  @Autowired
  private EmailProperties emailProperties;

  //Use the sendTo List by 
  //emailProperties.getSendTo()

}



@Configuration
public class YourConfiguration {
    @Bean
  public EmailProperties emailProperties(){
        return new EmailProperties();
  }

}


#Put this in src/main/resource/META-INF/spring.factories
  org.springframework.boot.autoconfigure.EnableAutoConfiguration=example.compackage.YourConfiguration