Java regex - 用没有分隔符的相同子字符串替换分隔符之间的子字符串 [英] Java regex - replace substrings between delimiters with same substrings without delimiters

问题描述

我想弄清楚如何在像这样的字符串中用 Java 1.6 替换

I'm trying to figure out how to replace with Java 1.6 in strings like

hello ${world }!   ${txt + '_t'}<br/> ${do_not_replace

'${' 和 '}' 之间标识的任何子字符串具有相同的子字符串，没有这些分隔符.所以上面字符串的输出应该是

any substring identified between '${' and '}' with the same substring without these delimiters. So the output for the string above should be

hello world !   txt + '_t'<br/> ${do_not_replace

我确定了一个允许我用固定字符串替换子字符串的工作模式

I identified a working pattern that allows me to replace the substrings with a fixed string

str.replaceAll('[${](.*?)}', '_')

而且我知道我不能在这个版本的 Java 中使用命名组.

and i know that i cannot use named groups with this version of Java.

任何有关此问题的简单解决方案的建议都非常感谢！非常感谢

Any suggestion for a simple solution to this problem are highly appreciated! Many thanks

推荐答案

try

    s = s.replaceAll("\\$\\{(.+?)}", "$1");

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