Scala：从字符串中替换换行符、制表符和返回序列
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Scala: Replace newline, tab and return sequences from string
提问by randombits
I have a string of HTML that I'm copy pasting into a String object that looks something like the following:
我有一个 HTML 字符串，我将其复制粘贴到一个类似于以下内容的 String 对象中：
val s = """<body>
<p>This is a test</p> <p>This is a test 2</p>
</body"""
The problem here is, when I display this string as JSON within the context of a web browser, the output displays literal \nand \tcharacters to the tune of something like this:
这里的问题是，当我在 Web 浏览器的上下文中将此字符串显示为 JSON 时，输出会显示文字\n和\t字符以进行如下调整：
"<body>\n <p>This is a test</p>\t <p>This is a test 2</p>\n</body>"
Is it possible to perhaps strip all of these escaped sequences from my strings output in Scala?
是否有可能从 Scala 的字符串输出中去除所有这些转义序列？
回答by Rex Kerr
You could just
你可以
s.filter(_ >= ' ')
to throw away all control characters.
扔掉所有控制字符。
If you want to omit extra whitespace at the start/end of lines also, you can instead
如果您还想在行的开头/结尾省略额外的空格，您可以改为
s.split('\n').map(_.trim.filter(_ >= ' ')).mkString
