case 1: condition is not matched

@ConditionalOnProperty("test.trustStore")
@AutoConfiguration
public class MyAutoConfiguration {
}

application.yaml

test:
  trust-store: classpath:ssl/truststore.jks

case 2: condition is matched

@ConditionalOnProperty("test.trust-store")
@AutoConfiguration
public class MyAutoConfiguration {
}

application.yaml

test:
  trustStore: classpath:ssl/truststore.jks

reason

After debug the source code, I found the reason: org.springframework.boot.context.properties.source.ConfigurationPropertyName.ElementsParser#isAlpha

        private static boolean isAlpha(char ch) {
            return ch >= 'a' && ch <= 'z';
        }

Can we change it to support uppercase letters？If so, I'd like to submmit a PR.

Comment From: wilkinsona

This is intentional. Please see the javadoc for name attribute:

Use the dashed notation to specify each property, that is all lower case with a "-" to separate words (e.g. my-long-property).

Using this canonical format in the annotation ensures that it can match against a variety of different input formats.