Java: 什么是 What's the URI and URL

最新推荐文章于 2025-08-11 14:43:21 发布

JohnsonElizeee

最新推荐文章于 2025-08-11 14:43:21 发布

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文章标签： java scheme server url file internet

本文链接：https://blog.youkuaiyun.com/JonsenElizee/article/details/1437527

本文详细解释了URI（统一资源标识符）和URL（统一资源定位符）的概念及其组成。介绍了URI不仅包括文件路径，还可以是电子邮件地址、新闻消息等其他类型的资源标识。同时，深入解析了URL作为URI的一种特殊形式，如何指定互联网上资源的位置及访问该资源所使用的协议。

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Edit Time: 2006/12/12

By: JonsenElizee

E-mail: JonsenElizee@163.com

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URI

A Uniform Resource Identifier (URI) is a string of characters in a particular syntax that identifies a resource. The resource identified may be a file on a server, but it may also be an email address, a news message, a book, a person's name, an Internet host, the current stock price of Sun Microsystems, or something else. An absolute URI is made up of a scheme for the URI and a scheme-specific part, separated by a colon, like this:

scheme:scheme-specific-part

URL

A URL identifies the location of a resource on the Internet. It specifies the protocol used to access a server (e.g., FTP, HTTP), the name of the server, and the location of a file on that server. A typical URL looks like http://www.ibiblio.org/javafaq/javatutorial.html. This specifies that there is a file called javatutorial.html in a directory called javafaq on the server www.ibiblio.org, and that this file can be accessed via the HTTP protocol. The syntax of a URL is:

protocol://username@hostname:port/path/filename?query#fragment