So, if I want to replace b[anything here] in a string with f[same thing here] how would I do that? Example: What is a regular expression that would make foobarfoo to foofarfoo, and foobanfoo to foofanfoo?
那么，如果我想用f替换字符串中的b(任何东西)我该怎么做呢?示例:什么正则表达式可以使foobarfoo到foofarfoo，而foobanfoo到foofanfoo?
1 个解决方案
#1
12
The basic principle here is a "capture group":
这里的基本原则是“捕获组”:
String output = input.replaceAll("foob(..)foo", "foof$1foo");
Put the portion of interest inside parentheses in the regular expression. It can then be referenced by its group number in replacement text, or via the Matcher.group() method.
将感兴趣的部分放在正则表达式的圆括号中。然后可以通过替换文本中的组号或通过Matcher.group()方法引用它。
#1
12
The basic principle here is a "capture group":
这里的基本原则是“捕获组”:
String output = input.replaceAll("foob(..)foo", "foof$1foo");
Put the portion of interest inside parentheses in the regular expression. It can then be referenced by its group number in replacement text, or via the Matcher.group() method.
将感兴趣的部分放在正则表达式的圆括号中。然后可以通过替换文本中的组号或通过Matcher.group()方法引用它。