举个例子:
替换前正则表达式
Access-Control-Allow-Credentials: true Access-Control-Allow-Origin: https://movie.douban.com Cache-Control: must-revalidate, no-cache, private Connection: keep-alive Content-Encoding: br Content-Type: application/json; charset=utf-8 Date: Tue, 08 Dec 2020 08:12:04 GMT Expires: Sun, 1 Jan 2006 01:00:00 GMT Keep-Alive: timeout=30 Pragma: no-cache Server: dae Set-Cookie: bid=QfmDsWrTsvE; Expires=Wed, 08-Dec-21 08:12:04 GMT; Domain=.douban.com; Path=/ Strict-Transport-Security: max-age=15552000 Transfer-Encoding: chunked X-Content-Type-Options: nosniff X-DAE-App: talion X-DAE-Instance: default X-Douban-Mobileapp: 0 X-DOUBAN-NEWBID: QfmDsWrTsvE X-Xss-Protection: 1; mode=block
上面那么多键值对从chrome的response headerds复制过来时没有引号,结尾处没有逗号
若是一个一个的加上引号和逗号会比较麻烦,浪费时间,这样的状况下能够编写个正则表达式进行匹配替换chrome
使用了正则表达式(.*?): (.*)
匹配了不带引号的键值对,而'$1': '$2',
则表示替换成冒号先后要加引号而且结尾处加上逗号的形式,选择所有替换,一次性替换成须要的键值对形式,很是方便express
下面是vscode针对正则表达式的官方连接:
https://docs.microsoft.com/en...json