如何使用正则表达式提取子字符串 [英] How to extract a substring using regex

问题描述

我有一个包含两个单引号的字符串，' 字符.单引号之间是我想要的数据.

如何编写正则表达式从以下文本中提取我想要的数据"?

mydata = "一些字符串，里面有'我想要的数据'";

解决方案

假设您想要单引号之间的部分，请使用带有 Matcher:

"'(.*?)'"

示例:

String mydata = "一些带有'我想要的数据'的字符串";模式 pattern = Pattern.compile("'(.*?)'");匹配器 matcher = pattern.matcher(mydata);如果 (matcher.find()){System.out.println(matcher.group(1));}

结果:

<前>我想要的数据

I have a string that has two single quotes in it, the ' character. In between the single quotes is the data I want.

How can I write a regex to extract "the data i want" from the following text?

mydata = "some string with 'the data i want' inside";

解决方案

Assuming you want the part between single quotes, use this regular expression with a Matcher:

"'(.*?)'"

Example:

String mydata = "some string with 'the data i want' inside";
Pattern pattern = Pattern.compile("'(.*?)'");
Matcher matcher = pattern.matcher(mydata);
if (matcher.find())
{
    System.out.println(matcher.group(1));
}

Result:

the data i want

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