我正在努力学习scala，在访问ReST api时遇到了一些障碍。
以下是该项目的依赖项：
libraryDependencies ++= Seq(
"net.databinder.dispatch" %% "dispatch-core" % "0.11.0"
)
这是我目前在scala工作表中使用的代码。
import dispatch._, Defaults._
val request = url(s"http://freegeoip.net/xml/www.google.com")
val busTime = Http( request <<? Map("key"->apiKey) OK as.xml.Elem)
def extractTime(xml: scala.xml.Elem) =
for {
response <- xml \\ "Response"
} yield xml
busTime()
但是，当我尝试按照我在scala上的书中列出的方式解析xml表达式时，我得到以下异常，我无法弄清楚原因。
java.util.concurrent.ExecutionException: java.lang.NoSuchMethodError: scala.collection.immutable.Range.validateRangeBoundaries(Lscala/Function1;)Z
at com.ning.http.client.providers.netty.NettyResponseFuture.done(experiment.sc8852822906338575612.tmp:321)
at com.ning.http.client.providers.netty.NettyAsyncHttpProvider.markAsDone(experiment.sc8852822906338575612.tmp:1427)
at com.ning.http.client.providers.netty.NettyAsyncHttpProvider.finishUpdate(experiment.sc8852822906338575612.tmp:1443)
at com.ning.http.client.providers.netty.NettyAsyncHttpProvider.access$2500(experiment.sc8852822906338575612.tmp:149)
at com.ning.http.client.providers.netty.NettyAsyncHttpProvider$HttpProtocol.handle(experiment.sc8852822906338575612.tmp:2195)
at com.ning.http.client.providers.netty.NettyAsyncHttpProvider.messageReceived(experiment.sc8852822906338575612.tmp:1150)
at org.jboss.netty.channel.SimpleChannelUpstreamHandler.handleUpstream(experiment.sc8852822906338575612.tmp:66)
at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(experiment.sc8852822906338575612.tmp:560)
at org.jboss.netty.channel.DefaultChannelPipeline$DefaultChannelHandlerContext.sendUpstream(experiment.sc8852822906338575612.tmp:787)
at org.jboss.netty.handler.stream.ChunkedWriteHandler.handleUpstream(experiment.sc8852822906338575612.tmp:138)
at org.jboss.netty.channel.DefaultChannelPipeline.sendUpstream(experiment.sc8852822906338575612.tmp:560)
at #worksheet#.#worksheet#(experiment.sc8852822906338575612.tmp:787)
Caused by: java.lang.NoSuchMethodError: scala.collection.immutable.Range.validateRangeBoundaries(Lscala/Function1;)Z
at scala.xml.parsing.FactoryAdapter.startElement(FactoryAdapter.scala:131)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(AbstractSAXParser.java:506)
at com.sun.org.apache.xerces.internal.impl.dtd.XMLDTDValidator.startElement(XMLDTDValidator.java:745)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(XMLDocumentFragmentScannerImpl.java:1323)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$ContentDriver.scanRootElementHook(XMLDocumentScannerImpl.java:1277)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:3065)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:881)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:607)
at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:489)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:835)
at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:764)
at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:123)
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1210)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:568)
at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl.parse(SAXParserImpl.java:302)
at scala.xml.factory.XMLLoader$class.loadXML(XMLLoader.scala:40)
at scala.xml.XML$$anon$1.loadXML(XML.scala:68)
at scala.xml.factory.XMLLoader$class.loadString(XMLLoader.scala:59)
at scala.xml.XML$$anon$1.loadString(XML.scala:68)
at dispatch.as.xml.Elem$.apply(elem.scala:8)
at dispatch.as.xml.Elem$.apply(elem.scala:6)
陌生人的部分是当我将响应解析为一个String时，它显示有效的xml。虽然这只是一个不符合我想要的字符串，但能够使用上述功能会很棒。
感谢任何帮助，谢谢！
根据评论我想在sbt repl中尝试它，结果如下：
scala> val request = url(s"http://freegeoip.net/xml/www.google.com")
request: dispatch.Req = Req(<function1>)
scala> var response = Http( request OK as.xml.Elem)
response: dispatch.Future[scala.xml.Elem] = scala.concurrent.impl.Promise$DefaultPromise@7fd2e7a
scala> response()
res2: scala.xml.Elem =
<Response>
<Ip>173.194.64.106</Ip>
<CountryCode>US</CountryCode>
<CountryName>United States</CountryName>
<RegionCode>CA</RegionCode>
<RegionName>California</RegionName>
<City>Mountain View</City>
<ZipCode>94043</ZipCode>
<Latitude>37.4192</Latitude>
<Longitude>-122.0574</Longitude>
<MetroCode>807</MetroCode>
<AreaCode>650</AreaCode>
</Response>
scala> def extractTime(xml: scala.xml.Elem) =
| for {
| response <- xml \\ "Response"
| } yield xml
extractTime: (xml: scala.xml.Elem)scala.xml.NodeSeq
scala> extractTime(response())
res3: scala.xml.NodeSeq =
NodeSeq(<Response>
<Ip>173.194.64.106</Ip>
<CountryCode>US</CountryCode>
<CountryName>United States</CountryName>
<RegionCode>CA</RegionCode>
<RegionName>California</RegionName>
<City>Mountain View</City>
<ZipCode>94043</ZipCode>
<Latitude>37.4192</Latitude>
<Longitude>-122.0574</Longitude>
<MetroCode>807</MetroCode>
<AreaCode>650</AreaCode>
</Response>)
所以现在我的新问题是为什么这组命令在repl中工作但不在工作表中？