我正在使用 sbt 程序集来尝试获取我们的应用程序并创建“一个大 jar”来部署它。
我遇到了 Play 2.1.2 依赖于 scala-stm 0.6 而 akka-transactor 2.1.4 依赖于 scala-stm 0.7 的问题。
我能够毫无问题地在 SBT 中运行该应用程序（以及 Eclipse 和 IntelliJ）
我不清楚如何使用“sbt assembly”解决这个问题
这是一些输出，准确地解释了我所看到的（剪掉了一些东西）：
[NPL-play] $ assembly
...
[info] Including from cache: akka-testkit_2.10-2.1.4.jar
[info] Including from cache: scala-stm_2.10.0-0.6.jar
...
[info] Including from cache: spray-httpx-1.1-M7.jar
[info] Including from cache: scala-stm_2.10-0.7.jar
...
[info] Including from cache: scala-library.jar
[info] Including from cache: voltdbclient-2.7.2.jar
[warn] Merging 'public/plugins/colreorder/docs/media/license' with strategy 'rename'
[warn] Merging 'public/plugins/colvis/docs/media/license' with strategy 'rename'
[warn] Merging 'public/images/icons/color/readme.txt' with strategy 'rename'
[warn] Merging 'public/plugins/flot/LICENSE.txt' with strategy 'rename'
[warn] Merging 'public/plugins/photoswipe/README.md' with strategy 'rename'
[error] (NPL-util/*:assembly) deduplicate: different file contents found in the following:
[error] /Users/worms/.ivy2/cache/org.scala-stm/scala-stm_2.10.0/jars/scala-stm_2.10.0-0.6.jar:scala/concurrent/stm/ccstm/CCSTMRefs.class
[error] /Users/worms/ivy2/cache/org.scala-stm/scala-stm_2.10/jars/scala-stm_2.10-0.7.jar:scala/concurrent/stm/ccstm/CCSTMRefs.class
[error] (NPL-admin/*:assembly) deduplicate: different file contents found in the following:
[error] /Users/worms/.ivy2/cache/org.scala-stm/scala-stm_2.10.0/jars/scala-stm_2.10.0-0.6.jar:scala/concurrent/stm/ccstm/CCSTMRefs.class
[error] /Users/worms/.ivy2/cache/org.scala-stm/scala-stm_2.10/jars/scala-stm_2.10-0.7.jar:scala/concurrent/stm/ccstm/CCSTMRefs.class
[error] Total time: 6 s, completed Aug 1, 2013 4:09:09 PM
[NPL-play] $
如果我查看依赖关系树，我会看到两个具有冲突依赖关系的东西（删除了一堆东西）：
[NPL-play] $ dependency-tree
[info] Updating {file:/Users/worms/dev/npl/}NPL-util...
[info] Updating {file:/Users/worms/dev/npl/}NPL-util...
[info] Done updating.
[info] Done updating.
[info] Updating {file:/Users/worms/dev/npl/}NPL-admin...
[info] Done updating.
[info] com.myorg:npl-admin_2.10:0.0.2 [S]
[info] +-com.myorg:networking_2.10:0.0.2 [S]
...
[info] | | |
[info] | | +-com.typesafe.akka:akka-transactor_2.10:2.1.4 [S]
[info] | | | +-com.typesafe.akka:akka-actor_2.10:2.1.4 [S]
[info] | | | | +-com.typesafe:config:1.0.0
[info] | | | |
[info] | | | +-org.scala-stm:scala-stm_2.10:0.7 [S]
...
[info] | +-play:play_2.10:2.1.3-RC1
...
[info] | +-play:play-iteratees_2.10:2.1.3-RC1
[info] | | +-com.github.scala-incubator.io:scala-io-file_2.10:0.4.2 [S]
[info] | | | +-com.github.scala-incubator.io:scala-io-core_2.10:0.4.2 [S]
[info] | | | +-com.jsuereth:scala-arm_2.10:1.3 [S]
[info] | | |
[info] | | +-com.typesafe:config:1.0.0
[info] | | +-org.scala-stm:scala-stm_2.10.0:0.6 [S]
...
关于如何解决这个依赖问题的任何建议？
========================= 编辑：添加更简单的示例 =================== ====
我决定尝试使用 Play 和 Akka 创建一个非常简单的应用程序。但是，我试图“组装”一个简单的 Play 应用程序并且遇到了问题。
这是我的项目/plugins.sbt 文件：
resolvers += "Typesafe repository" at "http://repo.typesafe.com/typesafe/releases/"
addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "0.9.1")
addSbtPlugin("net.virtual-void" % "sbt-dependency-graph" % "0.7.4")
addSbtPlugin("play" % "sbt-plugin" % "2.1.0")
这是我的项目/Build.scala 文件：
import sbt._
import Keys._
import play.Project._
import sbtassembly.Plugin._
import AssemblyKeys._
object ApplicationBuild extends Build {
val appName = "dependencyExample"
val appVersion = "1.0"
val appDependencies = Nil
val appSettings = Defaults.defaultSettings ++ assemblySettings ++ Seq(net.virtualvoid.sbt.graph.Plugin.graphSettings:_*)
val main = play.Project( appName, appVersion, appDependencies, settings = appSettings)
}
这是我从“程序集”得到的输出
[dependencyExample] $ assembly
[info] No tests to run for test:test
[info] Including from cache: jta-1.1.jar
[info] Including from cache: scala-arm_2.10-1.3.jar
[info] Including from cache: jcl-over-slf4j-1.6.6.jar
[info] Including from cache: jul-to-slf4j-1.6.6.jar
[info] Including from cache: commons-lang3-3.1.jar
[info] Including from cache: logback-classic-1.0.7.jar
[info] Including from cache: config-1.0.0.jar
[info] Including from cache: slf4j-api-1.6.6.jar
[info] Including from cache: commons-codec-1.3.jar
[info] Including from cache: async-http-client-1.7.6.jar
[info] Including from cache: joda-time-2.1.jar
[info] Including from cache: commons-logging-1.1.1.jar
[info] Including from cache: httpclient-4.0.1.jar
[info] Including from cache: jackson-mapper-asl-1.9.10.jar
[info] Including from cache: play-exceptions-2.1.0.jar
[info] Including from cache: scala-io-core_2.10-0.4.2.jar
[info] Including from cache: httpcore-4.0.1.jar
[info] Including from cache: logback-core-1.0.7.jar
[info] Including from cache: jackson-core-asl-1.9.10.jar
[info] Including from cache: scala-io-file_2.10-0.4.2.jar
[info] Including from cache: play-iteratees_2.10-2.1.0.jar
[info] Including from cache: joda-convert-1.2.jar
[info] Including from cache: javassist-3.16.1-GA.jar
[info] Including from cache: netty-3.5.9.Final.jar
[info] Including from cache: ehcache-core-2.6.0.jar
[info] Including from cache: akka-actor_2.10-2.1.0.jar
[info] Including from cache: signpost-commonshttp4-1.2.1.2.jar
[info] Including from cache: scala-stm_2.10.0-0.6.jar
[info] Including from cache: akka-slf4j_2.10-2.1.0.jar
[info] Including from cache: signpost-core-1.2.1.2.jar
[info] Including from cache: scala-reflect-2.10.0.jar
[info] Including from cache: play_2.10-2.1.0.jar
[info] Including from cache: sbt-link-2.1.0.jar
[info] Including from cache: templates_2.10-2.1.0.jar
[info] Including from cache: scala-library.jar
[warn] Merging 'META-INF/MANIFEST.MF' with strategy 'discard'
[error] (*:assembly) deduplicate: different file contents found in the following:
[error] /Users/worms/.ivy2/cache/commons-logging/commons-logging/jars/commons-logging-1.1.1.jar:org/apache/commons/logging/impl/SimpleLog.class
[error] /Users/worms/.ivy2/cache/org.slf4j/jcl-over-slf4j/jars/jcl-over-slf4j-1.6.6.jar:org/apache/commons/logging/impl/SimpleLog.class
[error] Total time: 2 s, completed Aug 6, 2013 3:07:27 PM
[dependencyExample] $
我仍然不清楚如何解决这个问题。我怀疑如果我可以解决这个简单的测试问题，那么我可以解决 Akka + Play 问题。
=================== 编辑：完成同一件事的不同方式=================
我发现了一个“神奇”的 sbt 命令。'分布'。这会将应用程序打包在一个 .zip 文件中，然后可以将其解压缩并在任何安装了 java 的机器上运行。
这是我们在 Coursera 上找到的花絮的博客文章：
http://betacs.pro/blog/2013/08/03/deploying-play-apps/
更多信息可以在这里找到：
http://www.playframework.com/documentation/2.1.x/ProductionDist