RSS 2.0 Specification[组图]

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Contents

• What is RSS?
• Sample files
• About this document
• Required channel elements
• Optional channel elements
• Elements of <item>
• Comments
• Extending RSS
• Roadmap
• License and authorship

What is RSS? 
　　
　　 RSS Directory About this website Specifications Feeds Aggregators Validators Howtos/Articles Tools Utilities RSS is a Web content syndication format.
　　
　　Its name is an acronym for Really Simple Syndication.
　　
　　RSS is a dialect of XML. All RSS files must conform to the XML 1.0 specification, as published on the World Wide Web Consortium (W3C) website.
　　
　　A summary of RSS version history.
　　
　　At the top level, a RSS document is a <rss> element, with a mandatory attribute called version, that specifies the version of RSS that the document conforms to. If it conforms to this specification, the version attribute must be 2.0.
　　
　　Subordinate to the <rss> element is a single <channel> element, which contains information about the channel (metadata) and its contents.
　　
　　Sample files 
　　
　　Here are sample files for: RSS 0.91, 0.92 and 2.0.
　　
　　Note that the sample files may point to documents and services that no longer exist. The 0.91 sample was created when the 0.91 docs were written. Maintaining a trail of samples seems like a good idea.
　　
　　About this document