SpringBoot2 ConfigurationProperties removes colon from yaml keys

Until SpringBoot 1.5.9 I was using the application yaml to define a namespaced id with few properties. eg.

app:
    ids:
      "urn:test:id:12-34" :
        roles:
          - CREATE
          - ALLOW_ALL
      "urn:test:id:23-41" :
        roles:
          - DELETE
          - ALLOW_ALL

This was being read in as a Map

@ConfigurationProperties(prefix = "app")
@Data
@Component
public class IdProps {
  @Data
  public static class IdProps {
    private Map<String, Id> ids = new HashMap<>();
  }

  @Data
  public static class Id {
    private List<String> roles = new ArrayList<>();;
  }
}

The expectation was that this worked in SpringBoot2.

However, the Map keys in SPringBoot2 were as below “urntestid12-34” -> “IdProps.Id(roles=[CREATE, ALLOW_ALL])”

Expected behavior “urn:test🆔12-34” -> “IdProps.Id(roles=[CREATE, ALLOW_ALL])”

[mbhave]

@balajeetm the new properties binder strips off all characters that are not alphanumeric or - so that properties can be read in a uniform manner. For map keys that have special characters in them, you can surround the key name with [] so that the key gets used as specified, for example, '[urn:test:id:12-34]'.

[mle-enso]

Thanks for your quick feedback… I’ll take a deeper look in your referenced issue and then proceed accordingly.