java - 用于精确提取 {} 之间的字符串的正则表达式

Question

我正在尝试使用正则表达式提取一些内容:

Pattern logEntry = Pattern.compile("digraph Checker \\{(.*)\\}");

对于文本 block :

{ /*uninterested in this*/ 
"
digraph Checker 
{ 
/*bunch of stuff*/
{
/*bunch of stuff*/
}
{
/*bunch of stuff*/
}
{
/*bunch of stuff*/
}
/*bunch of stuff*/
} //first most curly brace ends, would want the regex to filter out till here, incl. the braces
"
}

并期望输出为:

digraph Checker 
{ 
/*bunch of stuff*/
{
/*bunch of stuff*/
}
{
/*bunch of stuff*/
}
{
/*bunch of stuff*/
}
/*bunch of stuff*/
}

但似乎无法摆脱最后一个

"
}

有什么办法可以提取这个吗？

Answer 1

您可以使用此正则表达式:

Pattern logEntry = Pattern.compile("digraph Checker\\s+{((?:[^{]*{[^}]*})*[^}]*)}");

RegEx Demo