how to use typesafe config library just render file content?

Question

I'm use myConfig.root().render(ConfigRenderOptions.concise().setFormatted(true))) print my config content.But I find it contains many other information, such as "version" : "2.4.16" , "stdout-loglevel" : "WARNING" ,etc, which is not defined in my config file.
Where is the info come from?
How can I just print my config file contents?

Answer 1

I use a way to render config with parseResourcesAnySyntax method by separate myConfig with default :

object DataServiceConfig {
  val local = ConfigFactory.parseResourcesAnySyntax("local")
  val online = ConfigFactory.parseResourcesAnySyntax("online")
  val develop = ConfigFactory.parseResourcesAnySyntax("application") //develop environment
  val default = ConfigFactory.load("application") //default environment

  val myConfig = local.withFallback(online).withFallback(develop)
  val combinedConfig = myConfig.withFallback(default)

  def printConf(config: Config): Unit = println(config.root().render(ConfigRenderOptions.concise().setFormatted(true).setJson(true)))


}

print config: DataServiceConfig.printConf(DataServiceConfig.myConfig)

Answer 2

You're probably using Akka 2.4.16 (directly or indirectly), in which case the "extra" configuration settings are pulled from the reference.conf , as described in the documentation . The reference.conf contains all the default configuration settings, and your application.conf can override any of those settings.

The ActorSystem merges the reference.conf with your application.conf , as seen here . I don't think there is a way through the Typesafe Config API to render the contents of your application.conf without including the merged settings from reference.conf .

Answer 3

You can use java.util.Properties to just get your file contents, like this:

def getPropByFileName(fileName: String) = {
    val inputStream = this.getClass.getClassLoader.getResourceAsStream(fileName)
    val props = new Properties()
    props.load(inputStream)
    props
}