Java:正则表达式删除列表的 wiki 标记

Question

我正在阅读一个维基百科 XML 文件，其中我必须删除任何列表项。例如。对于以下字符串:

String text = ": definition list\n
** some list item\n
# another list item\n
[[Category:1918 births]]\n
[[Category:2005 deaths]]\n
[[Category:Scottish female singers]]\n
[[Category:Billy Cotton Band Show]]\n
[[Category:Deaths from Alzheimer's disease]]\n
[[Category:People from Glasgow]]";

在这里，我想删除*、#和:，但不删除它所说的类别。输出应如下所示:

String outtext = "definition list\n
some list item\n
another list item\n
[[Category:1918 births]]\n
[[Category:2005 deaths]]\n
[[Category:Scottish female singers]]\n
[[Category:Billy Cotton Band Show]]\n
[[Category:Deaths from Alzheimer's disease]]\n
[[Category:People from Glasgow]]";

我正在使用以下代码:

Pattern pattern = Pattern.compile("(^\\*+|#+|;|:)(.+)$");
            Matcher matcher = pattern.matcher(text);
            while (matcher.find()) {
                String outtext = matcher.group(0);
                outtext = outtext.replaceAll("(^\\*+|#+|;|:)\\s", "");
                return(outtext);
                } 

这不起作用。你能指出我应该怎么做吗？

Answer 1

这应该有效:

text = text.replaceAll("(?m)^[*:#]+\\s*", "");

重要的是使用 (?m) 表示 MULTILINE此处的模式允许您为每行使用行开始/结束 anchor 。

输出:

definition list
some list item
another list item
[[Category:1918 births]]
[[Category:2005 deaths]]
[[Category:Scottish female singers]]
[[Category:Billy Cotton Band Show]]
[[Category:Deaths from Alzheimer's disease]]
[[Category:People from Glasgow]]