我有以下代码尝试解析以#开头的行并用空字符串替换每一行,但换行符没有被剥离:
- 输入 -
# Remove this.
# remove this
# remove this line
keep # this line
keep this # line too
- 实际输出(。表示空行) -
.
.
.
keep # this line
keep this # line too
- 预期产出
keep # this line
keep this # line too
- 代码 -
String text = "# Remove this.\n# remove this\n# remove this line\n" +
"keep # this line\nkeep this # line too";
System.out.println(text);
Pattern PATTERN = Pattern.compile("^#(.*)$", Pattern.MULTILINE);
Matcher m = PATTERN.matcher(text);
if (m.find()) {
text = m.replaceAll("").replaceAll("[\n]+$", "");
System.out.println(text);
}
如何删除正则表达式匹配中的\ n?
答案 0 :(得分:2)
使用^#.*[\n]
选择包含换行符的行。