正則匹配URL過程

1. 獲得http請求頭的字串列表
2. 正則匹配列表的第二個元素
3. 判斷正則匹配結果

正則匹配url_demo

import re

def main():

	name = """
	GET / HTTP/1.1
	Host: 127.0.0.1:9999
	Connection: keep-alive
	Cache-Control: max-age=0
	Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,*/*;q=0                                          .8
	Upgrade-Insecure-Requests: 1
	User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Geck                                          o) Chrome/50.0.2661.102 Safari/537.36
	Accept-Encoding: gzip, deflate, sdch
	Accept-Language: zh-CN,zh;q=0.8

	GET /favicon.ico HTTP/1.1
	Host: 127.0.0.1:9999
	Connection: keep-alive
	User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Geck                                          o) Chrome/50.0.2661.102 Safari/537.36
	Accept: */*
	Referer: http://127.0.0.1:9999/
	Accept-Encoding: gzip, deflate, sdch
	Accept-Language: zh-CN,zh;q=0.8

	"""
	# str.splitlines([keepends])
	# http://www.runoob.com/python3/python3-string-splitlines.html
	# keepends -- 在輸出結果裡是否去掉換行符('\r', '\r\n', \n')，預設為 False，不包含換行符，如果為 True，則保留換行符。

	# str1 = name.splitlines(True)
	# print("保留換行符結果：\n",str1)
	str2 = name.splitlines(False)
	# print("不保留換行符結果：\n",str2)
	url_name = re.match(r"[^/]+(/[^ ]*)",str2[1])
	if url_name:
		url_name = url_name.group(1)
		print("正則匹配到的結果是：",url_name)
	else:
		print("未成功匹配到資料")

	
if __name__ == '__main__':
	main()
 

執行結果

可以匹配到我們需要的url

學習資料：