SBT 程序集插件的重复数据删除错误

Question

我正在尝试使用 SBT 程序集插件创建一个可执行 jar。

我最终得到以下错误：

[error] (app/*:assembly) deduplicate: different file contents found in the following:
[error] /Users/rajeevprasanna/.ivy2/cache/org.eclipse.jetty.orbit/javax.servlet/orbits/javax.servlet-3.0.0.v201112011016.jar:about.html
[error] /Users/rajeevprasanna/.ivy2/cache/org.eclipse.jetty/jetty-continuation/jars/jetty-continuation-8.1.8.v20121106.jar:about.html
[error] /Users/rajeevprasanna/.ivy2/cache/org.eclipse.jetty/jetty-http/jars/jetty-http-8.1.8.v20121106.jar:about.html
[error] /Users/rajeevprasanna/.ivy2/cache/org.eclipse.jetty/jetty-io/jars/jetty-io-8.1.8.v20121106.jar:about.html
[error] /Users/rajeevprasanna/.ivy2/cache/org.eclipse.jetty/jetty-security/jars/jetty-security-8.1.8.v20121106.jar:about.html
[error] /Users/rajeevprasanna/.ivy2/cache/org.eclipse.jetty/jetty-server/jars/jetty-server-8.1.8.v20121106.jar:about.html
[error] /Users/rajeevprasanna/.ivy2/cache/org.eclipse.jetty/jetty-servlet/jars/jetty-servlet-8.1.8.v20121106.jar:about.html
[error] /Users/rajeevprasanna/.ivy2/cache/org.eclipse.jetty/jetty-util/jars/jetty-util-8.1.8.v20121106.jar:about.html
[error] /Users/rajeevprasanna/.ivy2/cache/org.eclipse.jetty/jetty-webapp/jars/jetty-webapp-8.1.8.v20121106.jar:about.html
[error] /Users/rajeevprasanna/.ivy2/cache/org.eclipse.jetty/jetty-xml/jars/jetty-xml-8.1.8.v20121106.jar:about.html
[error] Total time: 2562 s, completed Dec 5, 2013 12:03:25 PM

在阅读了组装插件的 wiki 之后，我在 build.scala 文件中添加了合并策略。似乎它不起作用。我不确定它是否正确修复。有人可以建议我正确的策略吗？

下面是我在 build.scala 文件中的代码：

mergeStrategy in assembly <<= (mergeStrategy in assembly) {
      (old) => {
        case "about.html" => MergeStrategy.discard
        case "logback.xml" => MergeStrategy.first //case PathList("logback.xml") => MergeStrategy.discard
        case x => old(x)
      }
    }

我已根据此文档编写了与我的应用程序集成的插件：Standalone deployment of Scalatra servlet

我尝试了不同的策略，例如 MergeStrategy.rename 和 MergeStrategy.deduplicate。但是没有任何效果.. 寻求帮助...

Answer 1

您的MergeStrategy 看起来正确。唯一未处理的冲突是码头罐子中的“about.html”，所以case "about.html" => MergeStrategy.discard 应该这样做。

如果您仍然收到错误，我怀疑mergeStrategy in assembly 设置的重新接线要么没有进入，要么按错误的顺序进行。唯一确定的方法是查看您的 Build.scala。 @Stefan Ollinger 对您的链接问题的回答例如将项目设置如下：

lazy val project = Project("myProj", file(".")).
  settings(mySettings: _*).
  settings(myAssemblySettings:_*)

如果可能的话，您能否在gist 上发布您的 Build.scala？