如何检查给定的字符串是否是有效的URL地址?
我对正则表达式的知识是基本的,不允许我从我已经在网上看到的数百个正则表达式中进行选择。
如何检查给定的字符串是否是有效的URL地址?
我对正则表达式的知识是基本的,不允许我从我已经在网上看到的数百个正则表达式中进行选择。
当前回答
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))
}
其他回答
匹配一个URL有各种各样的选项,这取决于你的要求。 下面是一些例子。
_(^|[\s.:;?\-\]<\(])(https?://[-\w;/?:@&=+$\|\_.!~*\|'()\[\]%#,☺]+[\w/#](\(\))?)(?=$|[\s',\|\(\).:;?\-\[\]>\)])_i
#\b(([\w-]+://?|www[.])[^\s()<>]+(?:\([\w\d]+\)|([^[:punct:]\s]|/)))#iS
有一个链接提供了10多种不同的URL验证方法。
https://mathiasbynens.be/demo/url-regex
最佳正则表达式是这里最佳答案的组合!哈哈哈!我刚刚测试了它们,并把最好的放在一起!我稍微改变了一下,只有一个捕获组!我在这个页面的源代码中找到了637个url !只有几个假阳性!
((?:(?:https?|ftp)://)(?:\S+(?::\S*)?@|\d{1,3}(?:\.\d{1,3}){3}|(?:(?:[a-z\d\x{00a1}-\x{ffff}]+-?)*[a-z\d\x{00a1}-\x{ffff}]+)(?:\.(?:[a-z\d\x{00a1}-\x{ffff}]+-?)*[a-z\d\x{00a1}-\x{ffff}]+)*(?:\.[a-z\x{00a1}-\x{ffff}]{2,6}))(?::\d+)?(?:[^\s]*)|(?:(?:(?:[A-Za-z]{3,9}:(?:\/\/)?)(?:[-;:&=\+\$,\w]+@)?[A-Za-z0-9.-]+(?::[0-9]+)?|(?:www.|[-;:&=\+\$,\w]+@)[A-Za-z0-9.-]+)(?:(?:\/[\+~%\/.\w-_]*)?\??(?:[-\+=&;%@.\w_]*)#?(?:[\w]*))?)|(?:(?:(?:(?:[A-Za-z]{3,9}:(?:\/\/)?)(?:[-;:&=\+\$,\w]+@)?[A-Za-z0-9.-]+|(?:www.|[-;:&=\+\$,\w]+@)[A-Za-z0-9.-]+)(?:(?:\/[\+~%\/.\w-_]*)?\??(?:[-\+=&;%@.\w_]*)#?(?:[\w]*))?))|(?:(?:(?:[\\w]+:)?//)?(?:(?:[\\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]{2,4}(?::[\\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})*)?)|(?:https?:\/\/(?:[a-z0-9](?:[a-z0-9-]{0,61}[a-z0-9])?\.)+[a-z0-9][a-z0-9-]{0,61}[a-z0-9])(?::?\d*)\/?(?:[a-z_\/0-9\-#.]*)\??(?:[a-z_\/0-9\-#=&]*)|(?:(?:(?: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})*)?)|(?:(?:https?|ftp)://(?:www\d?|[a-zA-Z0-9]+)?\.[a-zA-Z0-9-]+(?:\:|\.)(?:[a-zA-Z0-9.]+|(?:\d+)?)(?:[/?:].*)?)|(?:\b(?:(?:https?|ftp):\/\/)(?:\S+(?::\S*)?@)?(?:(?!10(?:\.\d{1,3}){3})(?!127(?:\.\d{1,3}){3})(?!169\.254(?:\.\d{1,3}){2})(?!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-z\x{00a1}-\x{ffff}0-9]+-?)*[a-z\x{00a1}-\x{ffff}0-9]+)(?:\.(?:[a-z\x{00a1}-\x{ffff}0-9]+-?)*[a-z\x{00a1}-\x{ffff}0-9]+)*(?:\.(?:[a-z\x{00a1}-\x{ffff}]{2,})))(?::\d{2,5})?(?:\/[^\s]*)?\b))
这应该可以工作:
函数validateUrl(价值){ 返回/ ^ (http (s )?:\/\/.)?( www \)。? [-a-zA-Z0-9 @:%._\+~#=]{ 2256} \ [a - z] {2,6} \ b ([-a-zA-Z0-9 @:%_\+.~#?&//=]*)$/ gi.test(价值); } console.log (validateUrl (' google.com '));/ /正确的 console.log (validateUrl (' www.google.com '));/ /正确的 console.log (validateUrl (' http://www.google.com '));/ /正确的 console.log (validateUrl (http: / www.google.com));/ /错误 console.log (validateUrl (' www.google.com/test '));/ /正确的
这个怎么样:
^(https?:\/\/(?:www\.|(?!www))[a-zA-Z0-9][a-zA-Z0-9-]+[a-zA-Z0-9]\.[^\s]{2,}|www\.[a-zA-Z0-9][a-zA-Z0-9-]+[a-zA-Z0-9]\.[^\s]{2,}|https?:\/\/(?:www\.|(?!www))[a-zA-Z0-9]\.[^\s]{2,}|www\.[a-zA-Z0-9]\.[^\s]{2,})$
这些是测试用例:
你可以在这里试试:https://regex101.com/r/mS9gD7/41
我写了一个很棒的版本,你可以运行
它匹配以下url(这对我来说已经足够好了)
public static void main(args) {
String url = "go to http://www.m.abut.ly/abc its awesome"
url = url.replaceAll(/https?:\/\/w{0,3}\w*?\.(\w*?\.)?\w{2,3}\S*|www\.(\w*?\.)?\w*?\.\w{2,3}\S*|(\w*?\.)?\w*?\.\w{2,3}[\/\?]\S*/ , { it ->
"woof${it}woof"
})
println url
}
http://google.com
http://google.com/help.php
http://google.com/help.php?a=5
http://www.google.com
http://www.google.com/help.php
http://www.google.com?a=5
google.com?a=5
google.com/help.php
google.com/help.php?a=5
http://www.m.google.com/help.php?a=5 (and all its permutations)
www.m.google.com/help.php?a=5 (and all its permutations)
m.google.com/help.php?a=5 (and all its permutations)
对于任何不以http或www开头的url,重要的是它们必须包含/或?
我打赌这可以稍作调整,但它的工作非常好,因为它是如此简短和紧凑……因为你可以把它分成三份:
找到任何以http开头的内容:
https?:\/\/w{0,3}\w*?\.\w{2,3}\S*
找到任何以www开头的东西:
www\.\w*?\.\w{2,3}\S*
或者找到任何必须有一个文本,然后一个点,然后至少两个字母,然后一个?或/:
\w*?\.\w{2,3}[\/\?]\S*