Question

示例我有一个字符串

"123<a>3213<b>3434343<c>,example <d><1><2><3>"

我想通过符号"<>"

获取内部文本

如何获取列表 [a，b，c，d，1,2,3] ???

Answer 1

您可以使用StringUtils.substringsBetween(String str, String open, String close)。

String[] parts = StringUtils.substringsBetween("123<a>3213<b>3434343<c>,example <d><1><2><3>", "<", ">");

Answer 2

您想要<..>之间的文字。在给定String之间使用Pattern和Matcher，同时在<..>

之间对文字进行分组

String text = "123<a>3213<b>3434343<c>,example <d><1><2><3>";
Pattern pattern = Pattern.compile("<(.*?)>"); // reluctant quantifier
Matcher matcher = pattern.matcher(text);
List<String> entries = new LinkedList<>();
while (matcher.find()) 
    entries.add(matcher.group(1)); // group 0 is the whole match, we only want what's between <>
System.out.println(entries);

打印

[a, b, c, d, 1, 2, 3]

Answer 3

未经测试，几乎没有防弹，小错误检查，但它应该工作。当然事情可能会更好，这只是来自记忆。

public List<String> getThings(String source) {
    char[] chars = source.toCharArray();
    boolean capturing = false;
    List<String> result = new ArrayList<String>();
    String token = "";

    for(char c : chars) {
        if (!capturing) {
            if (c == '<') { // found open delimiter, start capture.
                capturing = true;
                continue;
            }
        } else {
            if (c == '>') { // Found closing delimiter, stop capture.
                results.add(token);
                token = "";
                capturing = false;
                continue;
            }
            token = token + c;
        }
    }
    if (!scanning) {
        throw new RuntimeException("Source string ended with missing closing '>'");
    }
    return results;
}

java如何通过指定的符号从字符串中获取列表？

3 个答案: