Lagom依赖Akka和Play Framework来实现某些功能。
与Lagom一起发布的Akka和Play版本通常足以运行Lagom应用程序。然而，在某些情况下，在保持Lagom相同版本的同时升级它们是有用的。当Akka和Play维护版本之间的二进制兼容性时，这通常是可能的。
记住Akka和Akka HTTP都不允许混合版本。因此，您必须确保同步覆盖依赖项树中所有工件的版本。

sbt

当你使用sbt时，你可以通过在build.sbt中添加以下内容来强制使用新的Akka和Play版本:

  1. val akkaVersion = "2.6.<newer-version>"
  2. val akkaHttpVersion = "10.1.<newer-version>"
  3. val playVersion = "2.8.<newer-version>"
  5. libraryDependencies in ThisBuild ++= Seq(
  6.   "com.typesafe.akka" %% "akka-discovery" % akkaVersion,
  7.   "com.typesafe.akka" %% "akka-cluster-sharding" % akkaVersion,
  8.   "com.typesafe.akka" %% "akka-cluster-tools" % akkaVersion,
  9.   "com.typesafe.akka" %% "akka-coordination" % akkaVersion,
  10.   "com.typesafe.akka" %% "akka-distributed-data" % akkaVersion,
  11.   "com.typesafe.akka" %% "akka-persistence" % akkaVersion,
  12.   "com.typesafe.akka" %% "akka-persistence-query" % akkaVersion,
  13.   "com.typesafe.akka" %% "akka-protobuf" % akkaVersion,
  14.   "com.typesafe.akka" %% "akka-slf4j" % akkaVersion,
  15.   "com.typesafe.akka" %% "akka-stream" % akkaVersion,
  17.   "com.typesafe.akka" %% "akka-http" % akkaHttpVersion,
  18.   "com.typesafe.akka" %% "akka-http-core" % akkaHttpVersion,
  19.   "com.typesafe.akka" %% "akka-http-spray-json" % akkaHttpVersion,
  21.   "com.typesafe.play" %% "play" % playVersion,

同时更新project/plugins.sbt中的play插件版本:

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