Injecting List of Strings with MicroProfile Config

A comma-separated String in microprofile-config.properties:


messages=hello,bye

...can be injected as a List of Strings (other types are injectable as well):

import java.util.List;
import javax.inject.Inject;
import javax.ws.rs.GET;
import javax.ws.rs.Path;
import org.eclipse.microprofile.config.inject.ConfigProperty;

@Path("messages")
public class MessagesResource {

    @Inject
    @ConfigProperty(name = "messages")
    List<String> messages;    

    @GET
    public List<String> messages() {
        return this.messages;
    }
}

The following command: curl -i localhost:8080/[THIN_WAR_NAME]/resources/messages prints: ["hello","bye"]

The 4kB ThinWAR project was created with Jakarta EE Essentials Archetype and deployed with: wad.sh in 1.9s

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