问题
Given this text file:
Received: from unknown (HELO aws-bacon-delivery-svc-iad-1007.vdc.g.com) ([10.146.157.151])
by na-mm-outgoing-6102-bacon.iad6.g.com with ESMTP; 12 Apr 2011 14:30:47 +0000
Return-Path: 0000012f4a2a0037-528dbafb-e773-44be-bef5-07d8f63e6aee-000000@email-bounces.g.com
Date: Tue, 12 Apr 2011 14:42:37 +0000
From: xxx@xxx.example.com
To: yyy@yyy.example.com
Message-ID: <0000012f4a2a0037-528dbafb-e773-44be-bef5-07d8f63e6aee-000000@email.g.com>
Subject: test
Mime-Version: 1.0
Content-Type: text/plain;
charset=UTF-8
Content-Transfer-Encoding: 7bit
X-AWS-Outgoing: 199.255.192.79
testing123
I want to get every field (Return-path, Date, From, To, etc.) as well as the body ("testing123).
I've tried matching using:
var bodyRegex = /[\n]Subject: (.+)[\n](.+)/
but I get empty value.
回答1:
Try this:
Code:
//var rePattern = new RegExp(/^Received:(.*)$/);
var rePattern = new RegExp(/^Subject:(.*)$/);
var arrMatches = strText.match(rePattern);
Result:
arrMatches[0] -> Subject: test
arrMatches[1] -> test
回答2:
This question was just suggested to me (even though it's quite old!?) and I think the accepted answer doesn't exactly do what was asked for (get every field + body), so I thought I'll share this...
To get each header and its value there is a quite simple regex (http://regexr.com/3e60k) with two capture groups, that also allows line breaks within a value (if indented):
var pattern = /(.+):\s(.+(?:\n +)?.+)?/g;
The pairs can be retrieved like
var match;
while (match = pattern.exec(string)) {
console.log(match[1] + ": " match[2]);
}
It's even simpler to get the body (http://regexr.com/3e60h), because it has to be separated from the headers with two new-line characters:
var body = string.match(/\n\n([\s\S]+)/)[1];
That matches anything after the two \n
(whitespace and non-whitespace).
See this fiddle for a complete example: http://es6fiddle.net/issocwc9/
来源:https://stackoverflow.com/questions/5675315/node-js-regular-expression-to-get-from-and-to