解决方法
将正则表达式更改为abc(.*)def(.*)pqr(.*)xyz,括号将自动绑定到
>变量$1到$3 if
你使用String.replaceAll()或
> Matcher.group(n)如果您使用
Matcher.find()
有关详细信息,请参阅Pattern class的文档,尤其是Groups and Capturing.
示例代码：
final String needle = "abc(.*)def(.*)pqr(.*)xyz";
final String hayStack = "abcXdefYpqrZxyz";
// Use $variables in String.replaceAll()
System.out.println(hayStack.replaceAll(needle,"_$1_$2_$3_"));
// Output: _X_Y_Z_
// Use Matcher groups:
final Matcher matcher = Pattern.compile(needle).matcher(hayStack);
while(matcher.find()){
System.out.println(
"A: " + matcher.group(1) +
",B: " + matcher.group(2) +
",C: " + matcher.group(3)
);
}
// Output: A: X,B: Y,C: Z
