Regular Expression #1

Regular Expression #2

Regular Expression #3

Regular Expression #4 (URL)

http URL 추출하기

반복 패턴 사용

역참조를 이용한 범위 지정

ref: https://www.slideshare.net/ibare/ss-39274621?qid=cb02c4e6-aa77-4e36-a231-23f2dd30bb69&v=&b=&from_search=1