urn

Is there a list of (all, non-custom) URL schemes? I thought that I just needed to search on google to find tons of answers, but it's probably wrong my (naive) question. If so, I will settle the ( usual ) most important: file:// , ftp:// , http:// , https:// , mailto: , news: , telnet:// https://www.iana.org/assignments/uri-schemes ( XML , XHTML , CSV , plain text ) It lists all registered (per RFC 7595 ) URI schemes. 来源： https://stackoverflow.com/questions/42274304/is-there-a-list-of-url-schemes

原文同步至 http://www.waylau.com/difference-of-uri-url-urn/ 在 Web 应用中，URI、URL 经常被人混淆和无解。本文详细描述了 URI、URL 以及 URN 之间的联系和区别。 定义 先看定义 URI（Uniform Resource Identifier，统一资源标识符)是一个用于标识某一互联网资源名称的字符串。 该种标识允许用户对网络中（一般指万维网）的资源通过特定的协议进行交互操作。 URL(Uniform Resource Locator，统一资源定位符），最常见的形式是 URI,经常指定为非正式的网址。 URN（Uniform Resource Name，统一资源名称），其目的是通过提供一种途径，用于在特定的命名空间资源的标识，以补充网址。 三者关系 URI 可以进一步划分为定位符（URL），名称（URN）或两者兼备。URL 和 URN 都是 URI 子集。URN 如同一个人的名称，而 URL 代表一个人的住址。换言之，URN 定义某事物的身份，而 URL 提供查找该事物的方法。 用于标识唯一书目的 ISBN 系统是一个典型的 URN 使用范例。例如，ISBN 0-486-27557-4( urn:isbn:0-486-27557-4 )无二义性地标识出莎士比亚的戏剧《罗密欧与朱丽叶》的某一特定版本

I have read many articles about URI s, URL s and URN s, but I don't understand the diff in real examples. Could you take a few examples of URI and URL ? I think http://stack.com/first/index.html?submit=yes&action=go#second is URI, not URL, yes? Then http://stack.com/first/index.html is URL, because it's not so specific? Is this image is correct? Here's a quote from the REST in Practice by J.Webber, S.Parastatidis, I.Robinson , that captures the essence of the differences: URLs and URN s are special forms of URIs. A URI that identifies the mechanism by which a resource may be accessed is

This question already has an answer here: What is the difference between a URI, a URL and a URN? 31 answers What's the difference between an URI, URL and URN? I have read a lot of sites (even Wikipedia) but I don't understand it. URI: http://www.foo.com/bar.html URL: http://www.foo.com/bar.html URN: bar.html Is this correct? ayush Uniform Resource Identifier ( URI ) is a string of characters used to identify a name or a resource on the Internet A URI identifies a resource either by location, or a name, or both. A URI has two specializations known as URL and URN. A Uniform Resource Locator (