sbt组装错误：重复数据删除：在io.netty.versions.properties中找到不同的文件内容

Question

我已将以下jar添加到build.sbt文件中，如下所示：

"com.amazonaws" % "aws-java-sdk" % "1.11.492"

发布此，在合并过程中，出现以下错误：

 [error] 1 error was encountered during merge
java.lang.RuntimeException: deduplicate: different file contents found in the following:
/home/jenkins-slave/.ivy2/cache/io.netty/netty-codec-http/jars/netty-codec-http-4.1.17.Final.jar:META-INF/io.netty.versions.properties
/home/jenkins-slave/.ivy2/cache/io.netty/netty-handler/jars/netty-handler-4.1.17.Final.jar:META-INF/io.netty.versions.properties
/home/jenkins-slave/.ivy2/cache/io.netty/netty-codec/jars/netty-codec-4.1.17.Final.jar:META-INF/io.netty.versions.properties
/home/jenkins-slave/.ivy2/cache/io.netty/netty-transport/jars/netty-transport-4.1.17.Final.jar:META-INF/io.netty.versions.properties
/home/jenkins-slave/.ivy2/cache/io.netty/netty-resolver/jars/netty-resolver-4.1.17.Final.jar:META-INF/io.netty.versions.properties
/home/jenkins-slave/.ivy2/cache/io.netty/netty-buffer/jars/netty-buffer-4.1.17.Final.jar:META-INF/io.netty.versions.properties
/home/jenkins-slave/.ivy2/cache/io.netty/netty-common/jars/netty-common-4.1.17.Final.jar:META-INF/io.netty.versions.properties
    at sbtassembly.Assembly$.applyStrategies(Assembly.scala:143)
    at sbtassembly.Assembly$.x$1$lzycompute$1(Assembly.scala:25)
    at sbtassembly.Assembly$.x$1$1(Assembly.scala:23)
    at sbtassembly.Assembly$.stratMapping$lzycompute$1(Assembly.scala:23)
    at sbtassembly.Assembly$.stratMapping$1(Assembly.scala:23)...........

我已经尝试过为此提供许多解决方法：

1）在assemblyMergeStrategy的build.sbt中添加了此行：case PathList("io", "netty", xs @ _*) => MergeStrategy.discard（尝试过.last和.first）

2）在assemblyMergeStrategy的build.sbt中添加了此行：case "META-INF\\io.netty.versions.properties" =>MergeStrategy.first（尝试过.last和.discard）

3）为排除在依赖项中的错误网络罐添加了SBT排除规则，如下所示：

    excludeDependencies ++= Seq(
      SbtExclusionRule("io.netty", "netty-codec-http"),
      SbtExclusionRule("io.netty", "netty-codec"),
      SbtExclusionRule("io.netty", "netty-handler"),
      SbtExclusionRule("io.netty", "netty-transport"),
      SbtExclusionRule("io.netty", "netty-resolver"),
      SbtExclusionRule("io.netty", "netty-buffer"),
      SbtExclusionRule("io.netty", "netty-common")
    )

以及上述的许多此类变体。这些解决方案均无用。

plugins.sbt看起来如下：

addSbtPlugin("io.spray" % "sbt-revolver" % "0.7.2")

addSbtPlugin("com.eed3si9n" % "sbt-buildinfo" % "0.5.0")

addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "0.14.9")

addSbtPlugin("com.typesafe.sbt" % "sbt-native-packager" % "1.0.1")

addSbtPlugin("com.scalapenos" % "sbt-prompt" % "0.2.1")

addSbtPlugin("com.timushev.sbt" % "sbt-updates" % "0.1.10")

addSbtPlugin("net.virtual-void" % "sbt-dependency-graph" % "0.8.0")

addSbtPlugin("com.typesafe.sbteclipse" % "sbteclipse-plugin" % "4.0.0")

请告知。

Answer 1

您可以在下面尝试：

assemblyMergeStrategy in assembly := {
      case x if x.contains("io.netty.versions.properties") => MergeStrategy.discard
      case x =>
        val oldStrategy = (assemblyMergeStrategy in assembly).value
        oldStrategy(x)
}

或在最坏的情况下

case x if x.contains("versions.properties") => MergeStrategy.discard

Answer 2

如果检查文件的内容，您会看到每个jar中都有不同的值，因此为了正确执行程序集，您可以合并这些文件以保留其中的所有属性。使用case "META-INF/io.netty.versions.properties" => MergeStrategy.concat它的策略。