Rich Snippets:rel =" nofollow"和RDFa

时间:2014-08-25 14:52:42

标签: html rel rdfa google-rich-snippets

我正在使用Rich Snippets根据schema.org上的集合标记我的内容。我正在使用RDFa Lite这样做,现在我遇到了rel属性的问题。我的一些链接确实具有rel="nofollow"属性/值。由于RDFa Lite是RDFa的子集,因此rel属性被识别为附加标记。有关以下标记的提取数据,请参阅this upload to Google's Structured Data Testing Tool

<div vocab="http://schema.org/" typeof="SportsTeam">
  <span property="name">San Francisco 49ers</span>
  <div property="member" typeof="OrganizationRole">
    <div property="member" typeof="http://schema.org/Person">
      <span property="name">Joe Montana</span>
    </div>
    <span property="startDate">1979</span>
    <span property="endDate">1992</span>
    <span property="namedPosition">Quarterback</span>
   <a rel="nofollow" href="http://www.google.com/">A Paid Link</a>
</div>

问题当然是付费链接不应出现在结构化标记中。任何想法如何解决这个问题?

2 个答案:

答案 0 :(得分:4)

一种可能性是使用Schema.org用法的前缀。由于RDFa Core Initial Contextschema定义了http://schema.org/,您甚至可以使用它而不首先在prefix属性中指定它:

<div typeof="schema:SportsTeam">
  <span property="schema:name">San Francisco 49ers</span>
  <div property="schema:member" typeof="schema:OrganizationRole">
    <div property="schema:member" typeof="schema:Person">
      <span property="schema:name">Joe Montana</span>
    </div>
    <span property="schema:startDate">1979</span>
    <span property="schema:endDate">1992</span>
    <span property="schema:namedPosition">Quarterback</span>
   <a rel="nofollow" href="http://www.google.com/">A Paid Link</a>
</div>

答案 1 :(得分:2)

您可以在使用vocab=""的元素上(或周围)添加空rel用于RDFa之外的目的。像:

<div vocab="http://schema.org/" typeof="SportsTeam">
  <span property="name">San Francisco 49ers</span>
  <div property="member" typeof="OrganizationRole">
    <div property="member" typeof="http://schema.org/Person">
      <span property="name">Joe Montana</span>
    </div>
    <span property="startDate">1979</span>
    <span property="endDate">1992</span>
    <span property="namedPosition">Quarterback</span>
   <a vocab="" rel="nofollow" href="http://www.google.com/">A Paid Link</a>
</div>

(另请注意,如果您只是在同一元素上添加rel,则可以在HTML中使用自定义(非URI)property值和RDFa值(这会使RDFa处理器忽略{{ 1}},如extension 7 of RDFa 1.1 in HTML中所定义。)例如,在rel旁边添加property="author"。)