scala – 添加lift-json作为Play 2.0项目的构建依赖项

Add dependency to your project description:
val lift_json = "net.liftweb" %% "lift-json" % "XXX"

我甚至不确定“项目描述”实际存储在哪里,但我发现Build.scala具有以下内容：

import sbt._
import Keys._
import PlayProject._

object ApplicationBuild extends Build {

    val appName         = "test"
    val appVersion      = "1.0"

    val appDependencies = Seq(
      // Add your project dependencies here,"net.liftweb" %% "lift-json" % "2.9.1"
    )

    val main = PlayProject(appName,appVersion,appDependencies).settings(defaultScalaSettings:_*).settings(
      // Add your own project settings here      
    )

}

你可以看到我为net.liftweb添加的行.不幸的是,这似乎是错误的地方或错误的内容,因为我得到以下构建错误：

[info] Updating {file:/D:/play/test/}test...
[warn]  module not found: net.liftweb#lift-json_2.9.1;2.9.1
[warn] ==== local: tried
[warn]   D:playplay-2.0-betaframework..repository/local/net.liftweb/lift-json_2.9.1/2.9.1/ivys/ivy.xml
[warn]   -- artifact net.liftweb#lift-json_2.9.1;2.9.1!lift-json_2.9.1.jar:
[warn]   D:playplay-2.0-betaframework..repository/local/net.liftweb/lift-json_2.9.1/2.9.1/jars/lift-json_2.9.1.jar
[warn] ==== Play Repository: tried
[warn]   http://download.playframework.org/ivy-releases/net.liftweb/lift-json_2.9.1/2.9.1/ivys/ivy.xml
[warn]   -- artifact net.liftweb#lift-json_2.9.1;2.9.1!lift-json_2.9.1.jar:
[warn]   http://download.playframework.org/ivy-releases/net.liftweb/lift-json_2.9.1/2.9.1/jars/lift-json_2.9.1.jar
[warn] ==== Typesafe Repository: tried
[warn]   http://repo.typesafe.com/typesafe/releases/net/liftweb/lift-json_2.9.1/2.9.1/lift-json_2.9.1-2.9.1.pom
[warn]   -- artifact net.liftweb#lift-json_2.9.1;2.9.1!lift-json_2.9.1.jar:
[warn]   http://repo.typesafe.com/typesafe/releases/net/liftweb/lift-json_2.9.1/2.9.1/lift-json_2.9.1-2.9.1.jar
[warn] ==== public: tried
[warn]   http://repo1.maven.org/maven2/net/liftweb/lift-json_2.9.1/2.9.1/lift-json_2.9.1-2.9.1.pom
[warn]   -- artifact net.liftweb#lift-json_2.9.1;2.9.1!lift-json_2.9.1.jar:
[warn]   http://repo1.maven.org/maven2/net/liftweb/lift-json_2.9.1/2.9.1/lift-json_2.9.1-2.9.1.jar
[warn] ==== Scala-Tools Maven2 Repository: tried
[warn]   http://scala-tools.org/repo-releases/net/liftweb/lift-json_2.9.1/2.9.1/lift-json_2.9.1-2.9.1.pom
[warn]   -- artifact net.liftweb#lift-json_2.9.1;2.9.1!lift-json_2.9.1.jar:
[warn]   http://scala-tools.org/repo-releases/net/liftweb/lift-json_2.9.1/2.9.1/lift-json_2.9.1-2.9.1.jar
[warn]  ::::::::::::::::::::::::::::::::::::::::::::::
[warn]  ::          UNRESOLVED DEPENDENCIES         ::
[warn]  ::::::::::::::::::::::::::::::::::::::::::::::
[warn]  :: net.liftweb#lift-json_2.9.1;2.9.1: not found
[warn]  ::::::::::::::::::::::::::::::::::::::::::::::
[error] {file:/D:/play/test/}test/*:update: sbt.ResolveException: unresolved dependency: net.liftweb#lift-json_2.9.1;2.9
.1: not found
[error] application -

! @68mcpckf2 - Internal server error,for request [GET /] ->

play.api.UnexpectedException: Unexpected exception [ResolveException: unresolved dependency: net.liftweb#lift-json_2.9.1
;2.9.1: not found]
        at sbt.PlayProject$$anon$1$$anonfun$reload$1$$anonfun$apply$36.apply(SbtPlugin.scala:518) ~[play_2.9.1.jar:na]
        at sbt.PlayProject$$anon$1$$anonfun$reload$1$$anonfun$apply$36.apply(SbtPlugin.scala:511) ~[play_2.9.1.jar:na]
        at scala.Option.map(Option.scala:133) [scala-library.jar:na]
        at sbt.PlayProject$$anon$1$$anonfun$reload$1.apply(SbtPlugin.scala:511) ~[play_2.9.1.jar:na]
        at sbt.PlayProject$$anon$1$$anonfun$reload$1.apply(SbtPlugin.scala:510) ~[play_2.9.1.jar:na]
        at scala.Either$LeftProjection.map(Either.scala:183) ~[scala-library.jar:na]
Caused by: sbt.ResolveException: unresolved dependency: net.liftweb#lift-json_2.9.1;2.9.1: not found
        at sbt.IvyActions$.sbt$IvyActions$$resolve(IvyActions.scala:216) ~[ivy_2.9.1-0.11.0.jar:na]
        at sbt.IvyActions$$anonfun$update$1.apply(IvyActions.scala:130) ~[ivy_2.9.1-0.11.0.jar:na]
        at sbt.IvyActions$$anonfun$update$1.apply(IvyActions.scala:129) ~[ivy_2.9.1-0.11.0.jar:na]
        at sbt.IvySbt$Module$$anonfun$withModule$1.apply(Ivy.scala:110) ~[ivy_2.9.1-0.11.0.jar:na]
        at sbt.IvySbt$Module$$anonfun$withModule$1.apply(Ivy.scala:110) ~[ivy_2.9.1-0.11.0.jar:na]
        at sbt.IvySbt$$anonfun$withIvy$1.apply(Ivy.scala:98) ~[ivy_2.9.1-0.11.0.jar:na]

我有一个Lift源代码的副本,但我不知道放在哪里.而且我很确定我把这种依赖放在了错误的地方.有人可以指出我正确的方向吗？