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如何通过正则表达式删除字符串中多余的回车符和空格？

发布于 2024-10-16 19:06:31 字数 46 浏览 6 评论 0原文

我将 HTML 代码转换为纯文本。但是有很多额外的回车符和空格。如何删除它们？

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枉心 2024-10-23 19:06:31

字符串 new_string = Regex.Replace(orig_string , @"\s", "") 将删除所有空格

string new_string = Regex.Replace(orig_string, @"\s+", " ") 将崩溃将多个空格合并为一个

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咆哮 2024-10-23 19:06:31

我假设您想要

找到两个或多个连续空格并将它们替换为单个空格，并
找到两个或多个连续换行符并将它们替换为单个换行符。

如果这是正确的，那么您可以使用

resultString = Regex.Replace(subjectString, @"( |\r?\n)\1+", "$1");

这使空白的原始“类型”保持完整，并且还正确保留 Windows 行结尾。如果您还想将多个制表符“压缩”为一个，请使用

resultString = Regex.Replace(subjectString, @"( |\t|\r?\n)\1+", "$1");

将一串换行符和空格（每个制表符任意数量）压缩为单个换行符，请使用

resultString = Regex.Replace(subjectString, @"(?:(?:\r?\n)+ +){2,}", @"\n");

I'm assuming that you want to

find two or more consecutive spaces and replace them with a single space, and
find two or more consecutive newlines and replace them with a single newline.

If that's correct, then you could use

resultString = Regex.Replace(subjectString, @"( |\r?\n)\1+", "$1");

This keeps the original "type" of whitespace intact and also preserves Windows line endings correctly. If you also want to "condense" multiple tabs into one, use

resultString = Regex.Replace(subjectString, @"( |\t|\r?\n)\1+", "$1");

To condense a string of newlines and spaces (any number of each) into a single newline, use

resultString = Regex.Replace(subjectString, @"(?:(?:\r?\n)+ +){2,}", @"\n");

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相思故 2024-10-23 19:06:31

我为此使用了很多算法。每个循环都很好，但这是清晰和绝对的。

//define what you want to remove as char

char tb = (char)9; //Tab char ascii code
spc = (char)32;    //space char ascii code
nwln = (char)10;   //New line char ascii char

yourstring.Replace(tb,"");
yourstring.Replace(spc,"");
yourstring.Replace(nwln,"");

//by defining chars, result was better.

I used a lot of algorithm for that. Every loop was good but this was clear and absolute.

//define what you want to remove as char

char tb = (char)9; //Tab char ascii code
spc = (char)32;    //space char ascii code
nwln = (char)10;   //New line char ascii char

yourstring.Replace(tb,"");
yourstring.Replace(spc,"");
yourstring.Replace(nwln,"");

//by defining chars, result was better.

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