根据我的假设，您希望提取文件中的每个单词，并将其与该单词包含在其中的文件名结合在一起。正如您所提到的，Spark以单个字符串的形式为您提供文件的全部内容。例如，如果这是文件内容：

hello
my name    is
John Doe

您得到的值将是：

val fileString = "hello\nmy name    is\nJohn Doe"

对吗？因此，您需要将字符串值拆分为任意数量的空格或换行符，如下所示：

val wordsSeparated = fileString.split("\\s+|\\n+") // \\s means space, \\n means new line (in regexes, character escaping and stuff)

所以在最后，你将需要这样的东西：

rddWhole.foreach { f => 
  f._2.split("\\s+|\\n+").foreach(word => println(f._1 + " => " + word))
}

这将是一个结果：

file:/tmp/spark-test/two.txt => and
file:/tmp/spark-test/two.txt => this
file:/tmp/spark-test/two.txt => would
file:/tmp/spark-test/one.txt => so
file:/tmp/spark-test/one.txt => hello
file:/tmp/spark-test/one.txt => my
file:/tmp/spark-test/one.txt => name
file:/tmp/spark-test/one.txt => is
file:/tmp/spark-test/one.txt => John
file:/tmp/spark-test/one.txt => Doe
file:/tmp/spark-test/two.txt => be
file:/tmp/spark-test/two.txt => the
file:/tmp/spark-test/two.txt => second
file:/tmp/spark-test/two.txt => text
file:/tmp/spark-test/two.txt => file