Scala启动时报错：[ERROR] Failed to construct terminal； falling back to unsupported

问题描述

使用scala-2.11.12版本，启动scala时，报错如下：

Welcome to Scala 2.11.12 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_191).
Type in expressions for evaluation. Or try :help.
[ERROR] Failed to construct terminal; falling back to unsupported
java.lang.NumberFormatException: For input string: "0x100"
        at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
        at java.lang.Integer.parseInt(Integer.java:580)
        at java.lang.Integer.valueOf(Integer.java:766)
        at jline.internal.InfoCmp.parseInfoCmp(InfoCmp.java:59)
        at jline.UnixTerminal.parseInfoCmp(UnixTerminal.java:242)
        at jline.UnixTerminal.(UnixTerminal.java:65)
        at jline.UnixTerminal.(UnixTerminal.java:50)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at java.lang.Class.newInstance(Class.java:442)
        at jline.TerminalFactory.getFlavor(TerminalFactory.java:211)
        at jline.TerminalFactory.create(TerminalFactory.java:102)
        at jline.TerminalFactory.get(TerminalFactory.java:186)
        at jline.TerminalFactory.get(TerminalFactory.java:192)
        at jline.console.ConsoleReader.(ConsoleReader.java:243)
        at jline.console.ConsoleReader.(ConsoleReader.java:235)
        at jline.console.ConsoleReader.(ConsoleReader.java:223)
        at scala.tools.nsc.interpreter.jline.JLineConsoleReader.(JLineReader.scala:64)
        at scala.tools.nsc.interpreter.jline.InteractiveReader.(JLineReader.scala:33)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
        at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
        at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$scala$tools$nsc$interpreter$ILoop$$instantiater$1$1.apply(ILoop.scala:858)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$scala$tools$nsc$interpreter$ILoop$$instantiater$1$1.apply(ILoop.scala:855)
        at scala.tools.nsc.interpreter.ILoop.scala$tools$nsc$interpreter$ILoop$$mkReader$1(ILoop.scala:862)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$22$$anonfun$apply$10.apply(ILoop.scala:873)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$22$$anonfun$apply$10.apply(ILoop.scala:873)
        at scala.util.Try$.apply(Try.scala:192)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$22.apply(ILoop.scala:873)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$22.apply(ILoop.scala:873)
        at scala.collection.immutable.Stream.map(Stream.scala:418)
        at scala.tools.nsc.interpreter.ILoop.chooseReader(ILoop.scala:873)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1$$anonfun$newReader$1$1.apply(ILoop.scala:893)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.newReader$1(ILoop.scala:893)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.scala$tools$nsc$interpreter$ILoop$$anonfun$$preLoop$1(ILoop.scala:897)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1$$anonfun$startup$1$1.apply(ILoop.scala:964)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply$mcZ$sp(ILoop.scala:990)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:891)
        at scala.tools.nsc.interpreter.ILoop$$anonfun$process$1.apply(ILoop.scala:891)
        at scala.reflect.internal.util.ScalaClassLoader$.savingContextLoader(ScalaClassLoader.scala:97)
        at scala.tools.nsc.interpreter.ILoop.process(ILoop.scala:891)
        at scala.tools.nsc.MainGenericRunner.runTarget$1(MainGenericRunner.scala:74)
        at scala.tools.nsc.MainGenericRunner.run$1(MainGenericRunner.scala:87)
        at scala.tools.nsc.MainGenericRunner.process(MainGenericRunner.scala:98)
        at scala.tools.nsc.MainGenericRunner$.main(MainGenericRunner.scala:103)
        at scala.tools.nsc.MainGenericRunner.main(MainGenericRunner.scala)

解决办法

修改 ： vi ~/.bashrc

不推荐修改~/.bash_profile，原因是
“you can create your .bash_profile in Ubuntu but then .profile will not be read.”
[1] https://askubuntu.com/questions/510709/i-cannot-find-bash-profile-in-ubuntu
[2] https://askubuntu.com/questions/510709/i-cannot-find-bash-profile-in-ubuntu

添加： export TERM=xterm-color

linux xterm color 终端颜色

保存并 source ~/.bashrc 使其生效；

问题解决

Welcome to Scala 2.11.12 (Java HotSpot(TM) 64-Bit Server VM, Java 1.8.0_191).
Type in expressions for evaluation. Or try :help.
 
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