将所有连续的"\ r \ n"或"\ n"替换为一个< br> [英] Replacing all consecutive "\r\n or \n"s with one single <br>

问题描述

目前，我仅显示使用以下两种替换方法从数据库获得的消息:

Currently I am showing messages that I get from DB using only these two replacements:

text = text.replace("\r\n", "<br />");
text = text.replace("\n", "<br />");

，但是问题是，如果有很多连续的"\ n"，我将有很多
或空格，我只想将它们全部变成一个.那么您的建议是什么?是否有一种快速替换方法，以使所有连续\ n \ n \ n \ n \ n \ n \ n仅一个而只有一个br?

but the problem is if there are many consecutive "\n"s I will have lots of
s or white spaces, I just want to make them all one. So what is your suggestion? Is there a quick replace method to make all consecutive \n\n\n\n\n\n\n only one just one br?

推荐答案

您可以使用量词+表示1或更多. 另外，*表示0或更大.

You can use quantifier + to denote 1 or more.. Also, * means 0 or more..

text = text.replaceAll("\n+", "<br />");

text = text.replaceAll("[\n\r]+", "<br />");

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