最好的正则表达式,我发现是:/ (^ | \ s) ((https ?:\/\/)?[\ w -) + (\ [\ w -]+)+\.?(:\ d +) ? (\ / \ S *) ?) / gi

ios迅速:(^ | \ \ s) ((https ?:\\/\\/)?[\\ w -]+(\\.[\\ w -]+)+\\.?(:\\ d +) ? (\ \ / \ \ S *) ?)

http://jsfiddle.net/9BYdp/1/

在这里找到

来自Android开源项目的URL正则表达式

介绍

Android开源项目(AOSP)在Patterns.java中包含多个带有URL正则表达式的代码块。由于使用unicode，非java用户很难从中提取regex模式，因此我编写了一些代码来完成这项工作。因为regex模式包含unicode，其文字字符串语法因编程语言而不同，所以我为每个regex模式添加了两种格式。 例如，Java使用\uUNICODE_NUMBER格式，而PHP使用\u{UNICODE_NUMBER}。

名为“WEB_URL”的模式

API文档描述:

正则表达式模式，以匹配大部分RFC 3987国际化url，即iri。

正则表达式在unicode \uUNICODE_NUMBER (Java, Python, Ruby)格式:

(((?:(?i:http|https|rtsp|ftp)://(?:(?:[a-zA-Z0-9\$\-\_\.\+\!\*\'\(\)\,\;\?\&\=]|(?:\%[a-fA-F0-9]{2})){1,64}(?:\:(?:[a-zA-Z0-9\$\-\_\.\+\!\*\'\(\)\,\;\?\&\=]|(?:\%[a-fA-F0-9]{2})){1,25})?\@)?)?(?:(([a-zA-Z0-9[\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef\ud800\udc00-\ud83f\udffd\ud840\udc00-\ud87f\udffd\ud880\udc00-\ud8bf\udffd\ud8c0\udc00-\ud8ff\udffd\ud900\udc00-\ud93f\udffd\ud940\udc00-\ud97f\udffd\ud980\udc00-\ud9bf\udffd\ud9c0\udc00-\ud9ff\udffd\uda00\udc00-\uda3f\udffd\uda40\udc00-\uda7f\udffd\uda80\udc00-\udabf\udffd\udac0\udc00-\udaff\udffd\udb00\udc00-\udb3f\udffd\udb44\udc00-\udb7f\udffd&&[^\u00a0[\u2000-\u200a]\u2028\u2029\u202f\u3000]]](?:[a-zA-Z0-9[\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef\ud800\udc00-\ud83f\udffd\ud840\udc00-\ud87f\udffd\ud880\udc00-\ud8bf\udffd\ud8c0\udc00-\ud8ff\udffd\ud900\udc00-\ud93f\udffd\ud940\udc00-\ud97f\udffd\ud980\udc00-\ud9bf\udffd\ud9c0\udc00-\ud9ff\udffd\uda00\udc00-\uda3f\udffd\uda40\udc00-\uda7f\udffd\uda80\udc00-\udabf\udffd\udac0\udc00-\udaff\udffd\udb00\udc00-\udb3f\udffd\udb44\udc00-\udb7f\udffd&&[^\u00a0[\u2000-\u200a]\u2028\u2029\u202f\u3000]]_\-]{0,61}[a-zA-Z0-9[\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef\ud800\udc00-\ud83f\udffd\ud840\udc00-\ud87f\udffd\ud880\udc00-\ud8bf\udffd\ud8c0\udc00-\ud8ff\udffd\ud900\udc00-\ud93f\udffd\ud940\udc00-\ud97f\udffd\ud980\udc00-\ud9bf\udffd\ud9c0\udc00-\ud9ff\udffd\uda00\udc00-\uda3f\udffd\uda40\udc00-\uda7f\udffd\uda80\udc00-\udabf\udffd\udac0\udc00-\udaff\udffd\udb00\udc00-\udb3f\udffd\udb44\udc00-\udb7f\udffd&&[^\u00a0[\u2000-\u200a]\u2028\u2029\u202f\u3000]]]){0,1}\.)+(xn\-\-[\w\-]{0,58}\w|[a-zA-Z[\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef\ud800\udc00-\ud83f\udffd\ud840\udc00-\ud87f\udffd\ud880\udc00-\ud8bf\udffd\ud8c0\udc00-\ud8ff\udffd\ud900\udc00-\ud93f\udffd\ud940\udc00-\ud97f\udffd\ud980\udc00-\ud9bf\udffd\ud9c0\udc00-\ud9ff\udffd\uda00\udc00-\uda3f\udffd\uda40\udc00-\uda7f\udffd\uda80\udc00-\udabf\udffd\udac0\udc00-\udaff\udffd\udb00\udc00-\udb3f\udffd\udb44\udc00-\udb7f\udffd&&[^\u00a0[\u2000-\u200a]\u2028\u2029\u202f\u3000]]]{2,63})|((25[0-5]|2[0-4][0-9]|[0-1][0-9]{2}|[1-9][0-9]|[1-9])\.(25[0-5]|2[0-4][0-9]|[0-1][0-9]{2}|[1-9][0-9]|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1][0-9]{2}|[1-9][0-9]|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1][0-9]{2}|[1-9][0-9]|[0-9]))))(?:\:\d{1,5})?)([/\?](?:(?:[a-zA-Z0-9[\u00a0-\ud7ff\uf900-\ufdcf\ufdf0-\uffef\ud800\udc00-\ud83f\udffd\ud840\udc00-\ud87f\udffd\ud880\udc00-\ud8bf\udffd\ud8c0\udc00-\ud8ff\udffd\ud900\udc00-\ud93f\udffd\ud940\udc00-\ud97f\udffd\ud980\udc00-\ud9bf\udffd\ud9c0\udc00-\ud9ff\udffd\uda00\udc00-\uda3f\udffd\uda40\udc00-\uda7f\udffd\uda80\udc00-\udabf\udffd\udac0\udc00-\udaff\udffd\udb00\udc00-\udb3f\udffd\udb44\udc00-\udb7f\udffd&&[^\u00a0[\u2000-\u200a]\u2028\u2029\u202f\u3000]];/\?:@&=#~\-\.\+!\*'\(\),_\$])|(?:%[a-fA-F0-9]{2}))*)?(?:\b|$|^))```

unicode \u{UNICODE_NUMBER} (PHP)格式的正则表达式:

(((?:(?i:http|https|rtsp|ftp)://(?:(?:[a-zA-Z0-9\$\-\_\.\+\!\*\'\(\)\,\;\?\&\=]|(?:\%[a-fA-F0-9]{2})){1,64}(?:\:(?:[a-zA-Z0-9\$\-\_\.\+\!\*\'\(\)\,\;\?\&\=]|(?:\%[a-fA-F0-9]{2})){1,25})?\@)?)?(?:(([a-zA-Z0-9[\u{00a0}-\u{d7ff}\u{f900}-\u{fdcf}\u{fdf0}-\u{ffef}\u{d800}\u{dc00}-\u{d83f}\u{dffd}\u{d840}\u{dc00}-\u{d87f}\u{dffd}\u{d880}\u{dc00}-\u{d8bf}\u{dffd}\u{d8c0}\u{dc00}-\u{d8ff}\u{dffd}\u{d900}\u{dc00}-\u{d93f}\u{dffd}\u{d940}\u{dc00}-\u{d97f}\u{dffd}\u{d980}\u{dc00}-\u{d9bf}\u{dffd}\u{d9c0}\u{dc00}-\u{d9ff}\u{dffd}\u{da00}\u{dc00}-\u{da3f}\u{dffd}\u{da40}\u{dc00}-\u{da7f}\u{dffd}\u{da80}\u{dc00}-\u{dabf}\u{dffd}\u{dac0}\u{dc00}-\u{daff}\u{dffd}\u{db00}\u{dc00}-\u{db3f}\u{dffd}\u{db44}\u{dc00}-\u{db7f}\u{dffd}&&[^\u{00a0}[\u{2000}-\u{200a}]\u{2028}\u{2029}\u{202f}\u{3000}]]](?:[a-zA-Z0-9[\u{00a0}-\u{d7ff}\u{f900}-\u{fdcf}\u{fdf0}-\u{ffef}\u{d800}\u{dc00}-\u{d83f}\u{dffd}\u{d840}\u{dc00}-\u{d87f}\u{dffd}\u{d880}\u{dc00}-\u{d8bf}\u{dffd}\u{d8c0}\u{dc00}-\u{d8ff}\u{dffd}\u{d900}\u{dc00}-\u{d93f}\u{dffd}\u{d940}\u{dc00}-\u{d97f}\u{dffd}\u{d980}\u{dc00}-\u{d9bf}\u{dffd}\u{d9c0}\u{dc00}-\u{d9ff}\u{dffd}\u{da00}\u{dc00}-\u{da3f}\u{dffd}\u{da40}\u{dc00}-\u{da7f}\u{dffd}\u{da80}\u{dc00}-\u{dabf}\u{dffd}\u{dac0}\u{dc00}-\u{daff}\u{dffd}\u{db00}\u{dc00}-\u{db3f}\u{dffd}\u{db44}\u{dc00}-\u{db7f}\u{dffd}&&[^\u{00a0}[\u{2000}-\u{200a}]\u{2028}\u{2029}\u{202f}\u{3000}]]_\-]{0,61}[a-zA-Z0-9[\u{00a0}-\u{d7ff}\u{f900}-\u{fdcf}\u{fdf0}-\u{ffef}\u{d800}\u{dc00}-\u{d83f}\u{dffd}\u{d840}\u{dc00}-\u{d87f}\u{dffd}\u{d880}\u{dc00}-\u{d8bf}\u{dffd}\u{d8c0}\u{dc00}-\u{d8ff}\u{dffd}\u{d900}\u{dc00}-\u{d93f}\u{dffd}\u{d940}\u{dc00}-\u{d97f}\u{dffd}\u{d980}\u{dc00}-\u{d9bf}\u{dffd}\u{d9c0}\u{dc00}-\u{d9ff}\u{dffd}\u{da00}\u{dc00}-\u{da3f}\u{dffd}\u{da40}\u{dc00}-\u{da7f}\u{dffd}\u{da80}\u{dc00}-\u{dabf}\u{dffd}\u{dac0}\u{dc00}-\u{daff}\u{dffd}\u{db00}\u{dc00}-\u{db3f}\u{dffd}\u{db44}\u{dc00}-\u{db7f}\u{dffd}&&[^\u{00a0}[\u{2000}-\u{200a}]\u{2028}\u{2029}\u{202f}\u{3000}]]]){0,1}\.)+(xn\-\-[\w\-]{0,58}\w|[a-zA-Z[\u{00a0}-\u{d7ff}\u{f900}-\u{fdcf}\u{fdf0}-\u{ffef}\u{d800}\u{dc00}-\u{d83f}\u{dffd}\u{d840}\u{dc00}-\u{d87f}\u{dffd}\u{d880}\u{dc00}-\u{d8bf}\u{dffd}\u{d8c0}\u{dc00}-\u{d8ff}\u{dffd}\u{d900}\u{dc00}-\u{d93f}\u{dffd}\u{d940}\u{dc00}-\u{d97f}\u{dffd}\u{d980}\u{dc00}-\u{d9bf}\u{dffd}\u{d9c0}\u{dc00}-\u{d9ff}\u{dffd}\u{da00}\u{dc00}-\u{da3f}\u{dffd}\u{da40}\u{dc00}-\u{da7f}\u{dffd}\u{da80}\u{dc00}-\u{dabf}\u{dffd}\u{dac0}\u{dc00}-\u{daff}\u{dffd}\u{db00}\u{dc00}-\u{db3f}\u{dffd}\u{db44}\u{dc00}-\u{db7f}\u{dffd}&&[^\u{00a0}[\u{2000}-\u{200a}]\u{2028}\u{2029}\u{202f}\u{3000}]]]{2,63})|((25[0-5]|2[0-4][0-9]|[0-1][0-9]{2}|[1-9][0-9]|[1-9])\.(25[0-5]|2[0-4][0-9]|[0-1][0-9]{2}|[1-9][0-9]|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1][0-9]{2}|[1-9][0-9]|[1-9]|0)\.(25[0-5]|2[0-4][0-9]|[0-1][0-9]{2}|[1-9][0-9]|[0-9]))))(?:\:\d{1,5})?)([/\?](?:(?:[a-zA-Z0-9[\u{00a0}-\u{d7ff}\u{f900}-\u{fdcf}\u{fdf0}-\u{ffef}\u{d800}\u{dc00}-\u{d83f}\u{dffd}\u{d840}\u{dc00}-\u{d87f}\u{dffd}\u{d880}\u{dc00}-\u{d8bf}\u{dffd}\u{d8c0}\u{dc00}-\u{d8ff}\u{dffd}\u{d900}\u{dc00}-\u{d93f}\u{dffd}\u{d940}\u{dc00}-\u{d97f}\u{dffd}\u{d980}\u{dc00}-\u{d9bf}\u{dffd}\u{d9c0}\u{dc00}-\u{d9ff}\u{dffd}\u{da00}\u{dc00}-\u{da3f}\u{dffd}\u{da40}\u{dc00}-\u{da7f}\u{dffd}\u{da80}\u{dc00}-\u{dabf}\u{dffd}\u{dac0}\u{dc00}-\u{daff}\u{dffd}\u{db00}\u{dc00}-\u{db3f}\u{dffd}\u{db44}\u{dc00}-\u{db7f}\u{dffd}&&[^\u{00a0}[\u{2000}-\u{200a}]\u{2028}\u{2029}\u{202f}\u{3000}]];/\?:@&=#~\-\.\+!\*'\(\),_\$])|(?:%[a-fA-F0-9]{2}))*)?(?:\b|$|^))

其他模式

java包含更多的模式，但发布它们将达到Stackoverflow的帖子长度限制。但我将在这里发布它们的API描述，以便您了解它们的存在和用途。我还在下面添加了使用Kotlin输出这些模式的代码。

名为“WEB_URL_WITHOUT_PROTOCOL”的模式

描述:

正则表达式，用于匹配不以受支持协议开头的字符串。这些顶级域名预计将是已知顶级域名之一。

定义:

"("
+ WORD_BOUNDARY
+ "(?<!:\\/\\/)"
+ "("
+ "(?:" + STRICT_DOMAIN_NAME + ")"
+ "(?:" + PORT_NUMBER + ")?"
+ ")"
+ "(?:" + PATH_AND_QUERY + ")?"
+ WORD_BOUNDARY
+ ")";

名为WEB_URL_WITH_PROTOCOL的模式

描述:

正则表达式，以匹配以受支持协议开头的字符串。域名和顶级域名的规则更加宽松。tld是可选的。

定义:

"("
+ WORD_BOUNDARY
+ "(?:"
+ "(?:" + PROTOCOL + "(?:" + USER_INFO + ")?" + ")"
+ "(?:" + RELAXED_DOMAIN_NAME + ")?"
+ "(?:" + PORT_NUMBER + ")?"
+ ")"
+ "(?:" + PATH_AND_QUERY + ")?"
+ WORD_BOUNDARY
+ ")";

名为AUTOLINK_WEB_URL的模式

描述:

正则表达式模式来匹配IRIs。如果字符串以 http(s)://表达式尝试用 放宽顶级域名规则。如果字符串不是以http(s)://开头 顶级域名应该是已知顶级域名之一。

定义:

"(" + WEB_URL_WITH_PROTOCOL + "|" + WEB_URL_WITHOUT_PROTOCOL + ")")

从AOSP patterns .java输出模式的代码

这段代码是用Kotlin(一种基于Java JVM的语言)编写的。If将regex模式从AOSP patterns .java转换为可读的格式:

import java.util.regex.Pattern

fun createPattern(pattern: Pattern, unicodeStringFormat: String): String =
    pattern.toString().flatMap {
        val charCode = it.code
        if (charCode > 126) {
            unicodeStringFormat.format(charCode).toList()
        } else {
            listOf(it)
        }
    }.joinToString("")

fun main() {
    val unicodeStringFormatJava = "\\u%04x"
    val unicodeStringFormatPHP = "\\u{%04x}"

    // Pattern: WEB_URL
    println(createPattern(Patterns.WEB_URL, unicodeStringFormatJava))
    println(createPattern(Patterns.WEB_URL, unicodeStringFormatPHP))

    // Pattern: AUTOLINK_WEB_URL
    println(createPattern(Patterns.AUTOLINK_WEB_URL, unicodeStringFormatJava))
    println(createPattern(Patterns.AUTOLINK_WEB_URL, unicodeStringFormatPHP))

    // Pattern: WEB_URL_WITH_PROTOCOL (variable modified to public visibility)
    println(createPattern(Patterns.WEB_URL_WITH_PROTOCOL.toPattern(), unicodeStringFormatJava))
    println(createPattern(Patterns.WEB_URL_WITH_PROTOCOL.toPattern(), unicodeStringFormatPHP))

    // Pattern: WEB_URL_WITHOUT_PROTOCOL (variable modified to public visibility)
    println(createPattern(Patterns.WEB_URL_WITHOUT_PROTOCOL.toPattern(), unicodeStringFormatJava))
    println(createPattern(Patterns.WEB_URL_WITHOUT_PROTOCOL.toPattern(), unicodeStringFormatPHP))
}

一个简单的URL检查是

^(ftp|http|https):\/\/[^ "]+$

我使用这个正则表达式:

((https?:)?//)?(([\d\w]|%[a-fA-f\d]{2,2})+(:([\d\w]|%[a-fA-f\d]{2,2})+)?@)?([\d\w][-\d\w]{0,253}[\d\w]\.)+[\w]{2,63}(:[\d]+)?(/([-+_~.\d\w]|%[a-fA-f\d]{2,2})*)*(\?(&?([-+_~.\d\w]|%[a-fA-f\d]{2,2})=?)*)?(#([-+_~.\d\w]|%[a-fA-f\d]{2,2})*)?

同时支持:

http://stackoverflow.com
https://stackoverflow.com

和:

//stackoverflow.com

如果你真的在搜索终极匹配，你可能会在“一个好的Url正则表达式?”

但是，一个真正匹配所有可能域并允许rfc允许的任何内容的正则表达式是可怕的长且不可读的，相信我;-)

Mathias Bynens有一篇关于大量正则表达式的最佳比较的很棒的文章:寻找完美的URL验证正则表达式

最好的一个帖子有点长，但它几乎可以匹配任何你可以扔给它的东西。

JavaScript版本

/^(?:(?:(?:https?|ftp):)?\/\/)(?:\S+(?::\S*)?@)?(?:(?!(?:10|127)(?:\.\d{1,3}){3})(?!(?:169\.254|192\.168)(?:\.\d{1,3}){2})(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.(?:[1-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(?:(?:[a-z0-9\u00a1-\uffff][a-z0-9\u00a1-\uffff_-]{0,62})?[a-z0-9\u00a1-\uffff]\.)+(?:[a-z\u00a1-\uffff]{2,}\.?))(?::\d{2,5})?(?:[/?#]\S*)?$/i

PHP版本(使用%符号作为分隔符)

%^(?:(?:(?:https?|ftp):)?\/\/)(?:\S+(?::\S*)?@)?(?:(?!(?:10|127)(?:\.\d{1,3}){3})(?!(?:169\.254|192\.168)(?:\.\d{1,3}){2})(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.(?:[1-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(?:(?:[a-z0-9\x{00a1}-\x{ffff}][a-z0-9\x{00a1}-\x{ffff}_-]{0,62})?[a-z0-9\x{00a1}-\x{ffff}]\.)+(?:[a-z\x{00a1}-\x{ffff}]{2,}\.?))(?::\d{2,5})?(?:[/?#]\S*)?$%iuS