Scala構建失敗？

我是新來斯卡拉時蔭試圖執行SBT更新我得到Scala構建失敗？

[error] /home/workspace/Scala/SparkTwitterStreaming/project/project/build.scala:1: expected class or object definition 
[error] name := "SparkTwitterStreaming" 
[error]^
[error] /home/workspace/Scala/SparkTwitterStreaming/project/project/build.scala:2: expected class or object definition 
[error] version := "1.0" 
[error]^
[error] /home/workspace/Scala/SparkTwitterStreaming/project/project/build.scala:3: expected class or object definition 
[error] scalaVersion := "2.11.6" 
[error]^
[error] /home/workspace/Scala/SparkTwitterStreaming/project/project/build.scala:5: expected class or object definition 
[error] libraryDependencies += "org.apache.spark" % "spark-core_2.11" % "1.6.2" 
[error]^
[error] /home/workspace/Scala/SparkTwitterStreaming/project/project/build.scala:6: expected class or object definition 
[error] libraryDependencies += "com.typesafe" % "config" % "1.3.0" 
[error]^
[error] 5 errors found

build.scala/build.sbt？

name := "SparkTwitterStreaming" 

version := "1.0" 

scalaVersion := "2.11.6" 

libraryDependencies += "org.apache.spark" % "spark-core_2.11" % "1.6.2" 

libraryDependencies += "com.typesafe" % "config" % "1.3.0"

來源

2016-09-16 Anji

什麼是你的'build.scala' /'build.sbt'是什麼樣子？你在哪個目錄下運行'sbt update'命令？ –

'name：=「SparkTwitterStreaming」 version：=「1.0」 scalaVersion：=「2.11.6」 libraryDependencies + =「org.apache.spark」％「spark-core_2.11」％「1.6.2」。這是什麼？它具有bin，src，項目的文件夾SourceFolder：SparkTwitterStreaming – Anji

這是什麼？它是'build.sbt'嗎？或'build.scala'？它位於什麼目錄？什麼是你的sbt項目的直接結構？你從哪裏調用sbt？請包括你的問題中的所有內容。 –

看起來你是在混淆.scala和.sbt文件。 SBT允許以兩種不同的方式定義構建。 .scala文件是正常的Scala文件，所以它們不能在頂層有代碼（並且在SBT中有name := "SparkTwitterStreaming"等等，只是Scala代碼），它必須位於trait/class/object中。 SBT本身負責以這種方式包裝.sbt文件。

SparkTwitterStreaming/project/project/build.scala看起來也錯了：有是案件在SBT時，你會使用一個文件project/project下，但是這是不是其中之一。你可能想把這個文件移動到SparkTwitterStreaming/build.sbt。

來源

2016-09-16 08:26:28

感謝它的工作 – Anji

所以基本上...有效最小SBT項目有像下面的結構，

YourProject 
├── build.sbt 
└── src 
    └── main 
     └── scala 
      └── Main.scala

，有點更詳細的項目會是這樣，

SparkTwitterStreaming 
├── build.sbt 
├── project 
│ ├── build.properties 
│   └── plugins.sbt 
└── src 
    └── main 
     └── scala 
      └── YouCode.scala

和最小build.sbt外觀like，

name := "SparkTwitterStreaming" 

version := "1.0" 

scalaVersion := "2.11.6" 

libraryDependencies += "org.apache.spark" % "spark-core_2.11" % "1.6.2" 

libraryDependencies += "com.typesafe" % "config" % "1.3.0"

現在有些人喜歡用build.scala而不是build.sbt，在這種情況下，此build.scala應位於SparkTwitterStreaming/project目錄內。

SparkTwitterStreaming 
├── project 
│ ├── build.properties 
│ ├── plugins.sbt 
│ └── build.scala 
└── src 
    └── main 
     └── scala 
      └── YouCode.scala

而且，上面build.sbt，相當於build.scala的樣子，

import sbt._ 
import Keys._ 

object MyBuild extends Build { // <--- here MyBuild can be renamed to anything 
    // if you needed extra resolvers 
    val pResolvers = Seq(
    "Sonatype OSS Snapshots" at "https://oss.sonatype.org/content/repositories/snapshots" 
) 

    val pDependencies = Seq(
    "org.apache.spark" % "spark-core_2.11" % "1.6.2", 
    "com.typesafe" % "config" % "1.3.0" 
) 

    val pBuildSettings = Seq (
    name := "SparkTwitterStreaming", 
    version := "1.0", 
    scalaVersion := "2.11.6", 
    resolvers ++= pResolvers, 
    libraryDependencies ++= pDependencies 
) 

    lazy val root = project.in(file(".")).settings(pBuildSettings) 
}

來源

2016-09-16 08:43:47

感謝您的信息 – Anji

Scala構建失敗？

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