在Windows上的Scala代码中运行shell命令似乎需要命令的完整绝对

发布时间：2020-12-14 01:42:24 所属栏目：Windows 来源：网络整理

导读：当我尝试在Mac上运行 shell命令时,它按预期工作如下： scala import scala.sys.process._import scala.sys.process._scala """protractor --version"""!warning: there were 1 feature warning(s); re-run with -feature for detailsVersion 0.24.0res12: In

当我尝试在Mac上运行 shell命令时,它按预期工作如下：

scala> import scala.sys.process._
import scala.sys.process._

scala> """protractor --version"""!
warning: there were 1 feature warning(s); re-run with -feature for details
Version 0.24.0
res12: Int = 0

scala>

但如果我在Windows上这样做,我会得到这个：

scala> import scala.sys.process._
import scala.sys.process._

scala> """protractor --version"""!
warning: there were 1 feature warning(s); re-run with -feature for details
java.io.IOException: Cannot run program "protractor": CreateProcess error=2,The system cannot find the file specified
        at java.lang.ProcessBuilder.start(ProcessBuilder.java:1041)

好像我必须在Windows上这样做：

scala> import scala.sys.process._
scala> """C:UserstwerAppDataRoamingnpmprotractor.cmd --version"""!
warning: there were 1 feature warning(s); re-run with -feature for details
Version 0.24.0
res11: Int = 0

scala>

我必须提供命令的完整绝对路径.

但我确信该命令在路径中可用.

反正有没有避免这个？

你可以试试这个：

val command = Seq("protractor","--version")
val os = sys.props("os.name").toLowerCase
val panderToWindows = os match {
  case x if x contains "windows" => Seq("cmd","/C") ++ command
  case _ => command
}
panderToWindows.!

（编辑：李大同）

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