Merge property file into application.properties

Question

I have two properties files. Let's say a.properties and b.properties. these file values has been stored in maps created, let say aMap and bMap.

@PropertySource(value={ "classpath:a.properties", "classpath:b.properties"})
Class propFile{
   Private Map<String, String> aMap;
   Private Map<String, String> bMap;
}

I have to merge these property file into application.properties such that it works same way. Please provide me solution for this.

Answer 1

You will be able to retrieve your properties by annotating your properties class with @Configuration and @ConfigurationProperties:

@Configuration
@ConfigurationProperties(prefix="maps")
public class ConfigProperties {
    private Map<String, String> a;
    private Map<String, String> b;

    // getters and setters
}

The corresponding application.yml would look as follows:

maps:
  a:
    key:
      test1
  b:
    key:
      test2

Or alternatively with an application.properties file:

maps.a.key=test1
maps.b.key=test2