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URL一词是Uniform ResourceLocator(统一资源定位符)的字头缩写。在Internet工程任务组(InternetEngineering Task Force,缩写为:IETF)中,通常将URL设计为Internet站点寻址的标准代码。一个URL类似于物理的树型地址;它是一列简单的代码,直接指向Internet上的一个特殊站点或模型。一个URL由2～5段组成,每一段以一个特殊字符隔开。URL结构如下:protocol://hostname:port number/directory path/file name 其中,protocol(协议)段说明Internet的资源类型,如:http表示超文本传输协议或WWW。其余的protocol代码有:Gopher、FTP(写成“ftp”)、telnet、news(指定一个新闻组)、Wais和mailto(表示电子
The word URL is an initial abbreviation of the Uniform Resource Locator. In the Internet Engineering Task Force (IETF), the URL is typically designed as a standard code for Internet site addressing. A URL is like a physical tree address; it’s a simple list of codes that points directly to a particular site or model on the Internet. A URL consists of 2 to 5 paragraphs, each separated by a special character. The URL structure is as follows: protocol: // hostname: port number / directory path / file name The protocol section describes the resource type of the Internet. For example, http represents the Hypertext Transfer Protocol or WWW. The rest of the protocol code is: Gopher, FTP (written as “ftp”), telnet, news (specifying a newsgroup), Wais and mailto