替换regexp匹配的Groovy方法

Posted 2021-02-23

Example of working with regexp sub-matches via Groovy way

str = "<img width=20 height=20 src='./img/but-small.jpg'/>"
str2 = str.replaceAll(/width=(d+) height=(d+) src='(.+)-small.jpg'/) {ma, wi, he, nm ->
 "width=${new Integer(wi) * 2} height=${he.toInteger() * 2} src='$nm-large.jpg'"
}
assert str2 == '<img width=40 height=40 src='./img/but-large.jpg'/>'