用正则表达式替换Java中的大括号{}之间的所有文本 [英] Replace all text between braces { } in Java with regex

问题描述

我有一个很长的字符串，{}之间有很多文字出现我想删除但是当我这样做时：

I have a long string with numerous occurences of text between { } that I would like to remove however when I do this:

data = data.replaceAll("{(.*?)}", "");

我收到错误，所以我做错了什么/我应该怎么做？

i get an error, so what am I doing wrong / how should I go about doing this?

推荐答案

这将替换大括号之间的所有文本并保留括号
这是使用正向前看和正面看完后面

This will replace all text between curly brackets and leave the brackets This is done using positive look ahead and positive look behind

data = data.replaceAll("(?<=\\{).*?(?=\\})", "");

if（true）{calc（）;}变为if（true）{}

"if (true) { calc(); }" becomes "if (true) {}"

这将替换大括号之间的所有文本并删除括号

This will replace all text between curly brackets and remove the brackets

data = data.replaceAll("\\{.*?\\}", "");

if（true）{calc（）;}变为if（true）

"if (true) { calc(); }" becomes "if (true)"

这将替换大括号之间的所有文本，包括新行。

This will replace all text between curly brackets, including new lines.

data = Pattern.compile("(?<=\\{).*?(?=\\})", Pattern.DOTALL).matcher(data).replaceAll("");

if（true）{\ n\t\tcalc（）; \ n }变成if（true）{}

"if (true) { \n\t\tcalc();\n }" becomes "if (true) {}"

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