所以我有一个 Scalatra 应用程序（使用 Scalatra 2.2.1）。我正在使用 Scalate 构建视图；我决定选择 Jade/Markdown 一二。只有一个问题：如果我尝试在翡翠模板中使用降价（以:markdown标签开头），我会得到这个：
scala.Predef$.any2ArrowAssoc(Ljava/lang/Object;)Lscala/Predef$ArrowAssoc;
java.lang.NoSuchMethodError: scala.Predef$.any2ArrowAssoc(Ljava/lang/Object;)Lscala/Predef$ArrowAssoc;
at org.fusesource.scalamd.Markdown$.<init>(md.scala:119)
at org.fusesource.scalamd.Markdown$.<clinit>(md.scala:-1)
at org.fusesource.scalate.filter.ScalaMarkdownFilter$.filter(ScalaMarkdownFilter.scala:32)
at org.fusesource.scalate.RenderContext$class.filter(RenderContext.scala:276)
at org.fusesource.scalate.DefaultRenderContext.filter(DefaultRenderContext.scala:30)
at org.fusesource.scalate.RenderContext$class.value(RenderContext.scala:235)
at org.fusesource.scalate.DefaultRenderContext.value(DefaultRenderContext.scala:30)
at templates.views.$_scalate_$about_jade$.$_scalate_$render(about_jade.scala:37)
at templates.views.$_scalate_$about_jade.render(about_jade.scala:48)
at org.fusesource.scalate.DefaultRenderContext.capture(DefaultRenderContext.scala:92)
at org.fusesource.scalate.layout.DefaultLayoutStrategy.layout(DefaultLayoutStrategy.scala:45)
at org.fusesource.scalate.TemplateEngine$$anonfun$layout$1$$anonfun$apply$mcV$sp$1.apply$mcV$sp(TemplateEngine.scala:559)
at org.fusesource.scalate.TemplateEngine$$anonfun$layout$1$$anonfun$apply$mcV$sp$1.apply(TemplateEngine.scala:559)
at org.fusesource.scalate.TemplateEngine$$anonfun$layout$1$$anonfun$apply$mcV$sp$1.apply(TemplateEngine.scala:559)
所以这很酷。一旦我删除:markdown标志，错误就会消失，除此之外，一切都会编译（除了 markdown 没有正确呈现）。
到目前为止我知道和发现的事情：
- 有人认为这个错误是构建中某个地方不兼容的 Scala 版本的副产品。我的 build.scala 将 Scala 版本定义为 Scalatra 明确兼容的 2.10.0。
- ...也就是说，我不知道哪个版本的 Scalate Scalatra 引入，并且我尝试覆盖它到目前为止还没有奏效。我知道当前稳定的 Scalate (1.6.1) 只兼容 Scala 2.10.0——但这就是我正在使用的。
- 但是，我确信我的类路径是干净的。我没有冲突的 Scala 版本。依赖项中的所有内容都是 2.10.0。
以前有人用过这个吗？有任何想法吗？
编辑
根据请求，这是我的构建定义：
//build.sbt
libraryDependencies += "org.scalatest" %% "scalatest" % "2.0.M5b" % "test"
libraryDependencies += "org.twitter4j" % "twitter4j-core" % "3.0.3"
libraryDependencies += "org.fusesource.scalamd" % "scalamd" % "1.5"
//build.properties
sbt.version=0.12.3
//build.scala
import sbt._
import Keys._
import org.scalatra.sbt._
import org.scalatra.sbt.PluginKeys._
import com.mojolly.scalate.ScalatePlugin._
import ScalateKeys._
object TheRangeBuild extends Build {
val Organization = "com.gastove"
val Name = "The Range"
val Version = "0.1.0-SNAPSHOT"
val ScalaVersion = "2.10.0"
val ScalatraVersion = "2.2.1"
lazy val project = Project (
"the-range",
file("."),
settings = Defaults.defaultSettings ++ ScalatraPlugin.scalatraWithJRebel ++ scalateSettings ++ Seq(
organization := Organization,
name := Name,
version := Version,
scalaVersion := ScalaVersion,
resolvers += Classpaths.typesafeReleases,
libraryDependencies ++= Seq(
"org.scalatra" %% "scalatra" % ScalatraVersion,
"org.scalatra" %% "scalatra-scalate" % ScalatraVersion,
"org.scalatra" %% "scalatra-specs2" % ScalatraVersion % "test",
"ch.qos.logback" % "logback-classic" % "1.0.6" % "runtime",
"org.eclipse.jetty" % "jetty-webapp" % "8.1.8.v20121106" % "compile;container",
"org.eclipse.jetty.orbit" % "javax.servlet" % "3.0.0.v201112011016" % "compile;container;provided;test" artifacts (Artifact("javax.servlet", "jar", "jar"))
),
scalateTemplateConfig in Compile <<= (sourceDirectory in Compile){ base =>
Seq(
TemplateConfig(
base / "webapp" / "WEB-INF" / "templates",
Seq.empty, /* default imports should be added here */
Seq(
Binding("context", "_root_.org.scalatra.scalate.ScalatraRenderContext", importMembers = true, isImplicit = true)
), /* add extra bindings here */
Some("templates")
)
)
}
) ++ seq(com.typesafe.startscript.StartScriptPlugin.startScriptForClassesSettings: _*)
)
}