Question

我需要正则表达式匹配特定的关键字和最近的“，”字符。这是我的示例字符串：

ersion: V3  Subject: EMAILADDRESS=aa@example.com, GIVENNAME=Blob, SURNAME=Bloby, CN=B dddddddddddd, O=sd, C=IR  Signature Algorithm: SHA1withRSA, OID = 1.2.840.113549.1.1.5  Key:  Sun RSA public key, 2048 bits  modulus

现在我需要匹配EMAILADDRESS和下一个之间的单词，这将是“aa@example.com”（对于这两个点之间的单词没有限制，它们可以是任何字符。什么是合适的正则表达式对此？

Answer 1

使用捕获组：

var str = 'ersion: V3  Subject: EMAILADDRESS=aa@example.com, GIVENNAME=Blob, SURNAME=Bloby, CN=B dddddddddddd, O=sd, C=IR  Signature Algorithm: SHA1withRSA, OID = 1.2.840.113549.1.1.5  Key:  Sun RSA public key, 2048 bits  modulus'
str.match(/EMAILADDRESS=([^,]+)/i)[1]
// => "aa@example.com"

[^,]匹配任何字符异常,。

Answer 2

只是为了完整，

var data = "version: V3  Subject: EMAILADDRESS=aa@example.com...", result = [];
data.split(",").forEach(function(currentItem) {
    var idx = currentItem.indexOf("EMAILADDRESS=");
    if (idx !== -1) {
        result.push(currentItem.split("EMAILADDRESS=", 1)[1]);
    }
});

console.log(result);

<强>输出

[ 'aa@example.com' ]

匹配关键字和最早的“，”字符之间的字符串

2 个答案: