我有一个使用sbt的Scala项目。它在Eclipse下运行得非常好，但是，尝试在sbt下运行它（sbt 'run mount 1440' - 包括我需要的参数）会导致ClassNotFoundException - 它无法找到jnr.ffi.provider.jffi.NativeClosureProxy类。但是，运行sbt 'last run'向我显示jnr-ffi-2.0.3.jar文件（包括所述类）实际上包含在类路径中。关于发生了什么的任何建议？
github上提供的来源：https://github.com/FileJunkie/vkfs
答案 0 :(得分：0)
你的构建sbt无效。
首先，您需要在libraryDependecy之间添加空行。
lazy val root = (project in file(".")).
settings(
name := "vkfs",
version := "1.0",
scalaVersion := "2.11.7"
)
libraryDependencies += "org.scalaj" %% "scalaj-http" % "1.1.6"
libraryDependencies += "org.json4s" %% "json4s-jackson" % "3.2.11"
libraryDependencies += "com.github.serceman" % "jnr-fuse" % "0.1"
第二，无法解析依赖关系“com.github.serceman”。这意味着
.ivy 或 总而言之，，似乎Eclipse会自动执行某些操作，因此您的程序会运行。当涉及到build.sbt时，它无效（缺少空行）并且无法正确解析依赖关系。 我想知道，你怎么可以通过sbt 'run mount 1440'开始。
在纠正空行并运行sbt'run mount 1440'后，我获得了
Java HotSpot(TM) 64-Bit Server VM warning: ignoring option MaxPermSize=256M; support was removed in 8.0
[info] Set current project to vkfs (in build file:/home/.../IdeaProjects/vkfs/)
[info] Updating {file:/home/.../IdeaProjects/vkfs/}root...
[info] Resolving com.github.serceman#jnr-fuse;0.1 ...
[warn] module not found: com.github.serceman#jnr-fuse;0.1
[warn] ==== local: tried
[warn] /home/.../.ivy2/local/com.github.serceman/jnr-fuse/0.1/ivys/ivy.xml
[warn] ==== public: tried
[warn] http://repo1.maven.org/maven2/com/github/serceman/jnr-fuse/0.1/jnr-fuse-0.1.pom
[info] Resolving jline#jline;2.12.1 ...
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: UNRESOLVED DEPENDENCIES ::
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
[warn] :: com.github.serceman#jnr-fuse;0.1: not found
[warn] ::::::::::::::::::::::::::::::::::::::::::::::
sbt.ResolveException: unresolved dependency: com.github.serceman#jnr-fuse;0.1: not found
at sbt.IvyActions$.sbt$IvyActions$$resolve(IvyActions.scala:213)
at sbt.IvyActions$$anonfun$update$1.apply(IvyActions.scala:122)
at sbt.IvyActions$$anonfun$update$1.apply(IvyActions.scala:121)
[ ... truncated ... ]
将以下行添加到build.sbt（记住额外的空行）
resolvers += Resolver.jcenterRepo
将jcenter添加到解析器列表中。
Resolver.jcenterRepo在SBT 0.13.5中不可用，因此
resolvers += "jcenter" at "https://jcenter.bintray.com/"
是必需的。
编译成功后并运行相关错误
java.lang.RuntimeException: java.lang.NoClassDefFoundError: jnr/ffi/provider/jffi/NativeClosureProxy
at jnr.ffi.provider.jffi.NativeClosureProxy.newProxyFactory(NativeClosureProxy.java:220)
v 0.1中的库“com.github.serceman”似乎有问题，因为它无法通过反射正确地实例化某些类。
通过将fork in run := true添加到build.sbt来解决问题。