Question

我使用Buildr 1.4.20（在64位Linux上使用Ruby 2.0.0）并尝试将ScalaTest与Scala 2.11.2一起使用，但我得到以下ClassNotFoundException每次我尝试运行buildr test。

Running tests in MyProject
ScalaTest "MySimpleTest"
An exception or error caused a run to abort. This may have been caused by a problematic custom reporter.
java.lang.NoClassDefFoundError: scala/xml/MetaData
    at org.scalatest.tools.ReporterFactory.createJunitXmlReporter(ReporterFactory.scala:209)
    at org.scalatest.tools.ReporterFactory.getReporterFromConfiguration(ReporterFactory.scala:230)
    at org.scalatest.tools.ReporterFactory$$anonfun$createReportersFromConfigurations$1.apply(ReporterFactory.scala:242)
    at org.scalatest.tools.ReporterFactory$$anonfun$createReportersFromConfigurations$1.apply(ReporterFactory.scala:241)
    at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:245)
    at scala.collection.TraversableLike$$anonfun$map$1.apply(TraversableLike.scala:245)
    at scala.collection.Iterator$class.foreach(Iterator.scala:743)
    at scala.collection.AbstractIterator.foreach(Iterator.scala:1177)
    at scala.collection.IterableLike$class.foreach(IterableLike.scala:72)
    at org.scalatest.tools.ReporterConfigurations.foreach(ReporterConfiguration.scala:43)
    at scala.collection.TraversableLike$class.map(TraversableLike.scala:245)
    at org.scalatest.tools.ReporterConfigurations.map(ReporterConfiguration.scala:43)
    at org.scalatest.tools.ReporterFactory.createReportersFromConfigurations(ReporterFactory.scala:241)
    at org.scalatest.tools.ReporterFactory.getDispatchReporter(ReporterFactory.scala:245)
    at org.scalatest.tools.Runner$.withClassLoaderAndDispatchReporter(Runner.scala:2720)
    at org.scalatest.tools.Runner$.runOptionallyWithPassFailReporter(Runner.scala:1043)
    at org.scalatest.tools.Runner$.run(Runner.scala:883)
    at org.scalatest.tools.ScalaTestAntTask.execute(ScalaTestAntTask.scala:329)
    at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
Caused by: java.lang.ClassNotFoundException: scala.xml.MetaData
    at org.apache.tools.ant.AntClassLoader.findClassInComponents(AntClassLoader.java:1365)
    at org.apache.tools.ant.AntClassLoader.findClass(AntClassLoader.java:1315)
    at org.apache.tools.ant.AntClassLoader.loadClass(AntClassLoader.java:1068)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
    ... 19 more

当然，我认为我可以通过在其中添加scala.xml.MetaData依赖项来解决此问题，因此我添加了＆＃34; org.scala-lang.modules：scala-xml_2.11：jar： 1.0.2＆＃34; 到我的测试类路径，但我仍然得到相同的错误。

我确定该类确实存在于.jar文件中：

atg@host:~> zipinfo ~/.m2/repository/org/scala-lang/modules/scala-xml_2.11/1.0.2/scala-xml_2.11-1.0.2.jar | grep MetaData
-rw----     2.0 fat     1441 bl defN 14-May-20 10:09 scala/xml/MetaData$$anonfun$asAttrMap$1.class
-rw----     2.0 fat     1312 bl defN 14-May-20 10:09 scala/xml/MetaData$$anonfun$toString$1.class
-rw----     2.0 fat     1215 bl defN 14-May-20 10:09 scala/xml/MetaData$$anonfun$toString1$1.class
-rw----     2.0 fat     4197 bl defN 14-May-20 10:09 scala/xml/MetaData$.class
-rw----     2.0 fat    10489 bl defN 14-May-20 10:09 scala/xml/MetaData.class

...所以我只能假设test.with不是在Scala项目中添加此依赖项的正确方法。任何人都可以就如何解决这个问题提出任何建议吗？

我的整个构建文件如下：

# enable Scala 2.11.2
Buildr.settings.build['scala.version'] = "2.11.2"
Buildr.settings.build['scala.test'] = 'org.scalatest:scalatest_2.11:jar:2.2.2'
Buildr.settings.build['scala.check'] = 'org.scalacheck:scalacheck_2.11:jar:1.11.6'
require 'buildr/scala'

VERSION_NUMBER = "1.0-SNAPSHOT"
GROUP = "..."
COPYRIGHT = "..."

repositories.remote << "http://repo1.maven.org/maven2"

DEPS_COMPILE = "javax.servlet:javax.servlet-api:jar:3.1.0"

desc "..."
define "MyProject" do
   project.version = VERSION_NUMBER
   project.group = GROUP
   manifest["Implementation-Vendor"] = COPYRIGHT

   compile.with DEPS_COMPILE

   test.with "org.scala-lang.modules:scala-xml_2.11:jar:1.0.2"
end

Answer 1

你的构建文件没问题，这似乎是buildr的一个问题。

作为一种解决方法，您可以在ant依赖项中添加scala-xml，如下所示：

VERSION_NUMBER = "1.0-SNAPSHOT"
GROUP = "..."
COPYRIGHT = "..."
Ant.dependencies << "org.scala-lang.modules:scala-xml_2.11:jar:1.0.2"

您还应该在buildr的存储库中发出错误。

如何配置Buildr以运行ScalaTest 2.11？

1 个答案: