我使用Scala2.11.7，但是sbt试图编译我的类以使目标/Scala-2.10

Question

我正在尝试运行一个简单的ScalatraServlet。

当我编译时，我可以看到它无法导入我的Scalatra组件。奇怪的是，它试图编译到一个名为scala-2.10/classes，的目录中，尽管我使用的是Scala2.11。

我的项目怎么了？

sal@gruntyman:~/workspace/funproxy$ sbt compile
[info] Loading project definition from /home/sal/workspace/funproxy/project
[info] Set current project to funproxy (in build file:/home/sal/workspace/funproxy/)
[info] Updating {file:/home/sal/workspace/funproxy/}funproxy...
[info] Resolving org.fusesource.jansi#jansi;1.4 ...
[info] Done updating.
[info] Compiling 3 Scala sources to /home/sal/workspace/funproxy/target/scala-2.10/classes...
[error] /home/sal/workspace/funproxy/src/main/scala/ProxyServlet.scala:5: object scalatra is not a member of package org
[error] import org.scalatra.ScalatraServlet
[error]            ^
[error] /home/sal/workspace/funproxy/src/main/scala/ProxyServlet.scala:7: not found: type ScalatraServlet
[error] class ProxyServlet extends ScalatraServlet with ScalateSupport {
[error]                            ^
[error] /home/sal/workspace/funproxy/src/main/scala/ProxyServlet.scala:7: not found: type ScalateSupport
[error] class ProxyServlet extends ScalatraServlet with ScalateSupport {
[error]                                                 ^
[error] /home/sal/workspace/funproxy/src/main/scala/ProxyServlet.scala:11: not found: value get
[error]   get("/") {
[error]   ^
[error] four errors found
[error] (compile:compileIncremental) Compilation failed
[error] Total time: 0 s, completed 31-Jan-2016 14:23:46
sal@gruntyman:~/workspace/funproxy$ sbt --version
sbt launcher version 0.13.7

这是我的SBT配置：

name := "funproxy"

version := "0.0.1"

scalaVersion := "2.11.7"

lazy val scalatraVersion = "2.3.1"
libraryDependencies += "javax.servlet" % "javax.servlet-api" % "3.1.0" % "provided"
libraryDependencies += "org.slf4j" % "slf4j-simple" % "1.7.14"
libraryDependencies += "junit" % "junit" % "4.10" % "test"
libraryDependencies += "org.scalatest" % "scalatest_2.11" % "2.2.5" % "test"
libraryDependencies += "org.scalatra" %% "scalatra" % scalatraVersion
libraryDependencies += "org.scalatra" %% "scalatra-scalate" % scalatraVersion
libraryDependencies += "org.scalatra" %% "scalatra-specs2" % scalatraVersion % "test"
libraryDependencies += "org.eclipse.jetty" % "jetty-webapp" % "9.2.10.v20150310" % "runtime"
//libraryDependencies +=  "ch.qos.logback"    %  "logback-classic"   % "1.1.3"            % "runtime"
//libraryDependencies += "net.databinder.dispatch" %% "dispatch-core" % "0.11.2"

scalacOptions ++= Seq("-unchecked", "-deprecation", "-feature")

Answer 1

sbt只在项目根目录中使用简单.sbt格式或子目录project中的完整.scala格式时才会找到构建文件。如果您将一个.sbt文件放置在project子目录中，这将用于元项目，例如包含插件定义。