Scala 錯誤: java.nio.charset.MalformedInputException: Input length = 1

Scala ERROR  java.nio.charset.MalformedInputException: Input length = 1

import scala.io.Source

object Test{

def main(args: Array[String] ){

val filename = "test.txt"

Source.fromFile("test.txt", "UTF-8").foreach{ 

               print 

               }

}

}

在執行上段程式碼的時候，遇到了 java.nio.charset.MalformedInputException: Input length = 1 的錯誤，官方解釋這個錯誤為:

MalformedInputException thrown when an input byte sequence is not legal for given charset, or an input character sequence is not a legal sixteen-bit Unicode sequence.

代表輸入時遇到不合法的字元，所以只要把輸入的字元編碼就可以了。

fromFile 方法有提供編碼的參數:

fromFile (name : java.lang.String, enc : java.lang.String) : Source

creates Source from file with given name, using given encoding, setting its description to filename.

所以改成:

object Test{

def main(args: Array[String] ){

val filename = "test.txt"

Source.fromFile("test.txt", "UTF-8").foreach{ 

               print 

             }

}

}