Grails或Play如何检测更改和热重载类？

developmentOnly "org.springframework.boot:spring-boot-devtools"

grails:
    profile: web
    codegen:
        defaultPackage: com.example.myapp
    urlmapping:
        cache:
            maxsize: 1000
    controllers:
        defaultScope: singleton
    converters:
        encoding: UTF-8
    views:
        default:
            codec: html
    mappings:
        "/$controller/$action?/$id?(.$format)?" {:constraints {
            // apply constraints here
        }}
    mime:
        disable:
            accept:
                header:
                    userAgents:
                        - Gecko
                        - WebKit
                        - Presto
                        - Trident
    logging:
        level:
            org.grails.web.servlet: DEBUG
    plugins:
        rest:
            default:
                json:
                    deep: true

grails.reload.enabled = true

libraryDependencies += "com.typesafe.play" %% "play-sbt-plugin" % "2.8.8"

enablePlugins(PlayScala)

play.server.provider = "play.core.server.AkkaHttpServerProvider"
play.run.mode = "dev"

GET     /assets/*file               controllers.Assets.versioned(path="/public", file: Asset)

addSbtPlugin("com.typesafe.play" % "sbt-plugin" % "2.8.8")