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YuriiS
Asked:2020-10-27 17:35:34 +0000 UTC2020-10-27 17:35:34 +0000 UTC

如何将字符串拆分为单词，以便单词中仅保留字母和数字字符？

  • 772

例如，有这样一行： String text = "然后骨灰盒被抬到火化现场几圈，作为游行的最后一站。"

我需要将其分解为单词，删除所有标点符号和特殊字符，并将单词放入列表中。

ArrayList words = new ArrayList<>(); Stringword = text.replaceAll(",", " "); - 这里，据我了解，有必要做正则表达式吗？或者你能去掉标点符号和特殊字符吗？

java

2 个回答

  1. Best Answer

    您可以使用正则表达式拆分字符串。

    String text = "The urn was then carried for several rounds around the cremation site, for the last leg of the procession.";
String[] results = text.split("\\W+");
System.out.println(Arrays.toString(results));
// [The, urn, was, then, carried, for, several, rounds, around, the, cremation, site, for, the, last, leg, of, the, procession]

    要\\W+“理解”Unicode，(?U)请在正则表达式之前添加（这样就不会删除俄语和其他字母）"(?U)\\W+"，.

    请注意，\\W+它不会找到下划线_，如果需要找到，请使用"[\\W_]+".

    在线查看演示

    您可以找到所有 Unicode 字母 ( \p{L}) 和 ASCII 数字 ( [0-9])

    String text = "The urn was then carried for several rounds around the cremation site, for the last leg of the procession. И ещё...";
Pattern pattern = Pattern.compile("[\\p{L}0-9]+");
Matcher matcher = pattern.matcher(text);
List<String> result = new ArrayList<>();
while (matcher.find()){
    result.add(matcher.group(0)); 
} 
System.out.println(result);  
// [The, urn, was, then, carried, for, several, rounds, around, the, cremation, site, for, the, last, leg, of, the, procession, И, ещё]

    另一个Java 演示

    • 6 
  2. String[] str = text.replaceAll("\\W", " ").replaceAll("\\s+"," ").split(" ");

    仅获取单词数组

    • 0

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