2010-10-24 60 views
6

我对rss提要很陌生,但我可以使用PHP动态创建提要,并且工作效果很好。我的问题是偶尔饲料没有任何物品(我将饲料的年龄限制在60天,有时候没有发生任何事情)。如何制作一个“空的”RSS订阅

我希望发生的事情是,我只是在我的xml页面中没有任何<item> s。然而,当我这样做的时候,阅读器(至少是Google的阅读器)看起来有点麻烦。尽管XML仍然正确地包含了Feed的名称,但它没有标题显示。

我发现迄今为止解决这个问题的唯一方法是放入一个虚拟物品,简单地说就是<item><title></title></item>。然后我的Google阅读器正确地找到了Feed的名称,它看起来像一个空白的Feed。

看来这是一个可能不正确的hokey解决方案。

是否有一些标准方法来处理空的提要的XML演示文稿?

编辑:下面是空的饲料是什么样子

<?xml version="1.0" encoding="utf-8"?> <rss version="2.0" 
xmlns:dc="http://purl.org/dc/elements/1.1/" 
xmlns:sy="http://purl.org/rss/1.0/modules/syndication/" 
xmlns:admin="http://webns.net/mvcb/" 
xmlns:rdf="http://www.w3.org/1999/02/22-rdf-syntax-ns#" 
xmlns:content="http://purl.org/rss/1.0/modules/content/"> 

<channel> 

<title>News at Example</title> 

<link>http://www.example.com/feed/sample-reviews</link> 
<description>Latest Additions to the Sample Category</description> 
<dc:language>en-us</dc:language> 
<dc:creator>Contact Example through our "contact us" page</dc:creator> 

<dc:rights>Copyright 2010 Example Technologies Inc.</dc:rights> 
<admin:generatorAgent rdf:resource="http://www.codeigniter.com/" /> 

     <item><title></title></item> 

</channel></rss> 
+2

听起来像一个错误。 “”较少的Feed没有任何问题。 – bobince 2010-10-24 16:28:26

+0

您可以展示您的Feed的完整示例吗? – 2010-10-24 16:31:46

+0

我已经添加了。如果没有那个空白的标记,那么Google阅读器由于某些原因不会收到Feed的主标题。有了它,它可以正常工作。它也适用于实际项目。只要没有物品,我就会遇到问题。 – <span class="text-secondary"> <small> <a rel="noopener" target="_blank" href="https://stackoverflow.com/users/478053/">neomech</a></span> <span>2010-10-24 17:21:47</span> </small> </span> </p> </div> </div> </div> </div> </div> </article> </div> <div class="answer-title"> <span class="text-logo margin-top-sm">A</span> <h2 class="title h4">回答</h2> </div> <div class="item-description text-md markdown-body margin-bottom-40 voidso"> <article class="board-top-1 padding-top-10"> <div class="post-col vote-info"> <span class="count">5<i class="fa fa-thumbs-up"></i></span> <i class="fa fa-check fa-2x"></i> </div> <div class="post-offset"> <div class="answer fmt"> <p>空饲料是饲料外壳(将XML的东西一般)没有任何项目。机箱必须仍然有效,因为它是有效的提要。</p> <p>从<a href="http://cyber.law.harvard.edu/rss/rss.html#hrelementsOfLtitemgt" rel="nofollow noreferrer">RSS 2.0 Specification</a>,而从2003年:</p> <blockquote> <blockquote> <p>通道可以包含任意数量<项目> S的</p> </blockquote> </blockquote> <p>然而,至少从<a href="http://www.thearchitect.co.uk/schemas/rss-2_0.xsd" rel="nofollow noreferrer">one RSS XSD</a>我们可以看到,它不是尊敬的开发人员知道:</p> <pre> <xs:element name="item" type="RssItem" minOccurs="1" maxOccurs="unbounded"> <!-- HACK: According to the RSS 2.0 spec, it should strictly be possible to have zero item elements, but this makes the schema non-deterministic with regard to extensibility elements so for the moment we undid bug-fix 10231 and set minOccurs=1 to work around this problem. --> </xs:element> </pre> <p>在不同的客户端尝试您的饲料。也许这只是谷歌实施的一个怪癖。因人而异。</p> <p>快乐编码。</p> <p><strong>编辑:</strong>为了好玩,请看SO问题:<a href="https://stackoverflow.com/questions/1650290/where-i-can-find-the-official-xsd-schema-for-rss-2-0">Where I can find the official XSD schema for RSS 2.0?</a>。实际上,这是相当容易的 -/</p> </div> <div class="post-info"> <div class="post-meta row"> <p class="text-secondary col-lg-6"> <span class="source"> <a rel="noopener" target="_blank" href="https://stackoverflow.com/q/4009145">来源</a> </span> </p> <p class="text-secondary col-lg-6"> <span class="float-right date"> <span>2010-10-24 16:31:26</span> </p> <p class="col-12"></p> <p class="col-12"></p></div> </div> <!-- comments --> <div class="comments"> <div itemprop="comment" class="post-comment"> <div class="row"> <div class="col-lg-1"><span class="text-secondary">+0</span></div> <div class="col-lg-11"> <p class="commenttext">我在网上看到过一些关于设置某种“默认”项目的讨论,这些项目表示目前没有供稿项目。建立一个像没有任何问题一样的项目是否有意义? – <span class="text-secondary"> <small> <a rel="noopener" target="_blank" href="https://stackoverflow.com/users/478053/">neomech</a></span> <span>2010-10-24 17:04:47</span> </small> </span> </p> </div> </div> </div> <div itemprop="comment" class="post-comment"> <div class="row"> <div class="col-lg-1"><span class="text-secondary">+0</span></div> <div class="col-lg-11"> <p class="commenttext">@neomech为给定客户使用任何[最佳]作品。快乐的编码。 – <span class="text-secondary"> <small> <span>2010-10-24 20:45:53</span> </small> </span> </p> </div> </div> </div> </div> </div> </article> <div> <script async src="//pagead2.googlesyndication.com/pagead/js/adsbygoogle.js"></script> <ins class="adsbygoogle" style="display:block" data-ad-client="ca-pub-6208739752673518" data-ad-slot="4319274062" data-ad-format="auto" data-full-width-responsive="true"></ins> <script> (adsbygoogle = window.adsbygoogle || []).push({}); </script> </div> <article class="board-top-1 padding-top-10"> <div class="post-col vote-info"> <span class="count">10<i class="fa fa-thumbs-up"></i></span> </div> <div class="post-offset"> <div class="answer fmt"> <p>具有零项的提要完全有效。如果谷歌阅读器没有正确处理,应该将它作为错误报告给他们,他们应该修复它。</p> </div> <div class="post-info"> <div class="post-meta row"> <p class="text-secondary col-lg-6"> <span class="source"> <a rel="noopener" target="_blank" href="https://stackoverflow.com/q/4009177">来源</a> </span> </p> <p class="text-secondary col-lg-6"> <span class="float-right date"> <span>2010-10-24 16:36:19</span> </p> <p class="col-12"></p> <p class="col-12"></p></div> </div> <!-- comments --> <div class="comments"> <div itemprop="comment" class="post-comment"> <div class="row"> <div class="col-lg-1"><span class="text-secondary">+0</span></div> <div class="col-lg-11"> <p class="commenttext">我同意这一点。也就是说,很多人使用谷歌阅读器(包括我自己在内),同时我希望我的代码能正常工作,这样我所有使用Google的用户至少可以看到他们应该做什么。听起来像是有一种空的饲料“黑客”是要走的路。 – <span class="text-secondary"> <small> <a rel="noopener" target="_blank" href="https://stackoverflow.com/users/478053/">neomech</a></span> <span>2010-10-24 17:06:00</span> </small> </span> </p> </div> </div> </div> </div> </div> </article> </div> <div class="clearfix"> </div> <div class="relative-box"> <div class="relative">相关问题</div> <ul class="relative_list"> <li> 1. <a href="http://cn.voidcc.com/question/p-kaemuxuy-rb.html" target="_blank" title="制作一个RSS订阅点击"> 制作一个RSS订阅点击 </a> </li> <li> 2. <a href="http://cn.voidcc.com/question/p-fdrnzeha-ny.html" target="_blank" title="点击一个DIV订阅RSS订阅"> 点击一个DIV订阅RSS订阅 </a> </li> <li> 3. <a href="http://cn.voidcc.com/question/p-vxpiltrg-ko.html" target="_blank" title="如何在RSS订阅"> 如何在RSS订阅 </a> </li> <li> 4. <a href="http://cn.voidcc.com/question/p-bfknmkwj-ua.html" target="_blank" title="主持一个动态的RSS订阅"> 主持一个动态的RSS订阅 </a> </li> <li> 5. <a href="http://cn.voidcc.com/question/p-aiyjuiac-qc.html" target="_blank" title="RSS订阅LINQ"> RSS订阅LINQ </a> </li> <li> 6. <a href="http://cn.voidcc.com/question/p-rofqysfu-sw.html" target="_blank" title="ASP.Net RSS订阅"> ASP.Net RSS订阅 </a> </li> <li> 7. <a href="http://cn.voidcc.com/question/p-vdfpqhqi-cs.html" target="_blank" title="如何让RSS订阅者再次阅读旧的RSS项目?"> 如何让RSS订阅者再次阅读旧的RSS项目? 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