5

我是 Scala 的新手，所以任何帮助都将不胜感激。

我正在使用 IntelliJ IDEA 版本：2020.1、sbt.version=1.2.8、jdk1.8.0_251 和 Scala 2.12.8。

当我尝试编译 coursera 项目时，出现以下错误

 compile
[error] stack trace is suppressed; run 'last coursierResolutions' for the full output
[error] (coursierResolutions) java.lang.NoSuchMethodError: lmcoursier.definitions.ToCoursier$.project(Llmcoursier/definitions/Project;)Lcoursier/core/Project;
[error] Total time: 0 s, completed 23-Apr-2020 23:46:04
[IJ]sbt:bigdata-wikipedia> last coursierResolutions
[error] java.lang.NoSuchMethodError: lmcoursier.definitions.ToCoursier$.project(Llmcoursier/definitions/Project;)Lcoursier/core/Project;
[error]         at coursier.sbtcoursier.ResolutionTasks$.$anonfun$resolutionsTask$3(ResolutionTasks.scala:43)
[error]         at scala.Function1.$anonfun$compose$1(Function1.scala:49)



[error]         at sbt.internal.util.$tilde$greater.$anonfun$$u2219$1(TypeFunctions.scala:62)
[error]         at sbt.std.Transform$$anon$4.work(Transform.scala:67)
[error]         at sbt.Execute.$anonfun$submit$2(Execute.scala:281)
[error]         at sbt.internal.util.ErrorHandling$.wideConvert(ErrorHandling.scala:19)
[error]         at sbt.Execute.work(Execute.scala:290)
[error]         at sbt.Execute.$anonfun$submit$1(Execute.scala:281)
[error]         at sbt.ConcurrentRestrictions$$anon$4.$anonfun$submitValid$1(ConcurrentRestrictions.scala:178)
[error]         at sbt.CompletionService$$anon$2.call(CompletionService.scala:37)
[error]         at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[error]         at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:511)
[error]         at java.util.concurrent.FutureTask.run(FutureTask.java:266)
[error]         at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
[error]         at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
[error]         at java.lang.Thread.run(Thread.java:748)

这是 plugins.sbt 中的 sbt coursier 插件

addSbtPlugin("io.get-coursier" % "sbt-coursier" % "2.0.0-RC3-5")
addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.9.7")
4

4 回答 4

10

删除 coursier 插件并升级到 sbt 1.3.13 对我有用。

build.properties

sbt.version=1.3.13

插件.sbt

//addSbtPlugin("io.get-coursier" % "sbt-coursier" % "2.0.0-RC3-5")
addSbtPlugin("ch.epfl.scala" % "sbt-scalafix" % "0.9.7")

构建.sbt

course := "bigdata"
assignment := "wikipedia"

构建.sbt

scalaVersion := "2.12.11"
scalacOptions ++= Seq("-language:implicitConversions", "-deprecation")
libraryDependencies ++= Seq(
  "com.novocode" % "junit-interface" % "0.11" % Test,
  ("org.apache.spark" %% "spark-core" % "2.4.3"),
  ("org.apache.spark" %% "spark-sql" % "2.4.3")
)
dependencyOverrides ++= Seq(
  ("com.fasterxml.jackson.core" % "jackson-databind" % "2.6.7")
)

testOptions in Test += Tests.Argument(TestFrameworks.JUnit, "-a", "-v", "-s")

这个答案归功于@JOHN。

于 2020-07-11T16:06:27.920 回答
1

我直接在终端中使用了 1.2.8 版本的 sbt 二进制文件，它救了我（IDEA 中 sbt shell 的 sbt 版本是 1.3.8）。

于 2020-05-22T01:50:16.967 回答
0

是的，该解决方案部分地对我有用，但我还必须更改build.sbt如下：

course := "bigdata"
assignment := "wikipedia"

scalaVersion := "2.12.8"
scalacOptions ++= Seq("-language:implicitConversions", "-deprecation")
libraryDependencies ++= Seq(
  "com.novocode" % "junit-interface" % "0.11" % Test,
  ("org.apache.spark" %% "spark-core" % "2.4.3"),
  ("org.apache.spark" %% "spark-sql" % "2.4.3")
)
dependencyOverrides ++= Seq(
  ("com.fasterxml.jackson.core" % "jackson-databind" % "2.6.7")
)

testOptions in Test += Tests.Argument(TestFrameworks.JUnit, "-a", "-v", "-s")

这适用于相对较新的 Scala 版本和最近为其构建的 Spark 库。

于 2021-10-09T22:32:44.470 回答
0

我在 Coursera 上 École Polytechnique Fédérale de Lausanne 的 Scala 函数式编程原理课程时遇到了同样的错误（我假设您也在学习该课程）。对我来说，解决方案是使用以下设置，我的更改位于底部的“sbt 项目”部分：

在此处输入图像描述

之后，看看 sbt shell 中的一切对我来说是如何正常工作的：

"C:\Program Files\AdoptOpenJDK\jdk-11.0.9.11-hotspot\bin\java.exe" -agentlib:jdwp=transport=dt_socket,address=localhost:63820,suspend=n,server=y -Xdebug -server -Xmx1536M -Dsbt.supershell=false -Didea.managed=true -Dfile.encoding=UTF-8 -Dsbt.log.noformat=true -jar C:\Users\jaime\AppData\Roaming\JetBrains\IdeaIC2020.2\plugins\Scala\launcher\sbt-launch.jar early(addPluginSbtFile=\"\"\"C:\Users\jaime\AppData\Local\Temp\idea1.sbt\"\"\") "; set ideaPort in Global := 63650 ; idea-shell"
Listening for transport dt_socket at address: 63820
[info] Loading settings for project global-plugins from idea1.sbt ...
[info] Loading global plugins from C:\Users\jaime\.sbt\1.0\plugins
[info] Updating ProjectRef(uri("file:/C:/Users/jaime/.sbt/1.0/plugins/"), "global-plugins")...
[info] downloading https://repo1.maven.org/maven2/io/github/sugakandrey/scala-compiler-indices-protocol_2.12/0.1.1/scala-compiler-indices-protocol_2.12-0.1.1.jar ...
[info] downloading https://repo1.maven.org/maven2/io/spray/spray-json_2.12/1.3.4/spray-json_2.12-1.3.4.jar ...
[info] downloading https://repo.scala-sbt.org/scalasbt/sbt-plugin-releases/org.jetbrains/sbt-structure-extractor/scala_2.12/sbt_1.0/2018.2.1+4-88400d3f/jars/sbt-structure-extractor.jar ...
[info]  [SUCCESSFUL ] io.github.sugakandrey#scala-compiler-indices-protocol_2.12;0.1.1!scala-compiler-indices-protocol_2.12.jar (380ms)
[info]  [SUCCESSFUL ] io.spray#spray-json_2.12;1.3.4!spray-json_2.12.jar(bundle) (444ms)
[info] downloading https://repo.scala-sbt.org/scalasbt/sbt-plugin-releases/org.jetbrains/sbt-idea-shell/scala_2.12/sbt_1.0/2018.3/jars/sbt-idea-shell.jar ...
[info] downloading https://repo.scala-sbt.org/scalasbt/sbt-plugin-releases/org.jetbrains/sbt-idea-compiler-indices/scala_2.12/sbt_1.0/0.1.3/jars/sbt-idea-compiler-indices.jar ...


[info]  [SUCCESSFUL ] org.jetbrains#sbt-structure-extractor;2018.2.1+4-88400d3f!sbt-structure-extractor.jar (1711ms)
[info]  [SUCCESSFUL ] org.jetbrains#sbt-idea-shell;2018.3!sbt-idea-shell.jar (1790ms)
[info]  [SUCCESSFUL ] org.jetbrains#sbt-idea-compiler-indices;0.1.3!sbt-idea-compiler-indices.jar (2273ms)
[info] Done updating.
[info] Loading settings for project example-build from buildSettings.sbt,plugins.sbt ...
[info] Loading project definition from C:\Users\jaime\Downloads\example\project
[info] Updating ProjectRef(uri("file:/C:/Users/jaime/Downloads/example/project/"), "example-build")...
[info] Done updating.
[warn] There may be incompatibilities among your library dependencies; run 'evicted' to see detailed eviction warnings.
[info] Compiling 2 Scala sources to C:\Users\jaime\Downloads\example\project\target\scala-2.12\sbt-1.0\classes ...
[info] Done compiling.
WARNING: An illegal reflective access operation has occurred
WARNING: Illegal reflective access by com.google.protobuf.UnsafeUtil (file:/C:/Users/jaime/.sbt/boot/scala-2.12.7/org.scala-sbt/sbt/1.2.8/protobuf-java-3.3.1.jar) to field java.nio.Buffer.address
WARNING: Please consider reporting this to the maintainers of com.google.protobuf.UnsafeUtil
WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations
WARNING: All illegal access operations will be denied in a future release
[info] Loading settings for project example from assignment.sbt,build.sbt ...
[info] Set current project to progfun1-example (in build file:/C:/Users/jaime/Downloads/example/)
[info] Defining Global / ideaPort
[info] The new value will be used by Compile / compile, Test / compile
[info] Reapplying settings...
[info] Set current project to progfun1-example (in build file:/C:/Users/jaime/Downloads/example/)
[IJ]sbt:progfun1-example> console
[info] Compiling 1 Scala source to C:\Users\jaime\Downloads\example\target\scala-2.13\classes ...
[info] Non-compiled module 'compiler-bridge_2.13' for Scala 2.13.0. Compiling...
[info]   Compilation completed in 7.345s.
[info] Done compiling.
[info] Starting scala interpreter...
Welcome to Scala 2.13.0 (OpenJDK 64-Bit Server VM, Java 11.0.9).
Type in expressions for evaluation. Or try :help.

scala>
于 2021-04-18T02:41:25.007 回答