How can I override Spring Boot application.properties programmatically?

Question

I have jdbc property files which I take from external configuration web-service In spring boot in order to set mysql props it\'s easy as adding those to application.properti

Answer 1

It could be very simple:

@SpringBootApplication
public class SampleApplication {

  public static void main(String[] args) {
    new SpringApplicationBuilder(SampleApplication.class)
        .properties(props())
        .build()
        .run(args);
  }

  private static Properties props() {
    Properties properties = new Properties();
    properties.setProperty("MY_VAR", "IT WORKS");
    return properties;
  }
}

application.yml

test:
  prop: ${MY_VAR:default_value}