name()函数返回节点的完整名称（含命名空间前缀），而local-name()仅返回本地名称。例如，name(//prefix:element)返回”prefix:element”，local-name()返回”element”。在无命名空间时二者结果相同。需判断命名空间时用name()，否则local-name()更高效。可用//*[name()=’book’]进行名称匹配，或结合条件如//*[name()=’book’ and @category=’fiction’]。性能方面，name()在大文档中可能较慢，建议使用具体路径、索引或缓存优化，优先选用local-name()若无需前缀。
XPath的
name()
函数主要用于获取XML或HTML文档中节点的本地名称（local name）。它会返回一个字符串，代表节点的名称，但不包含命名空间前缀。
解决方案：
XPath
name()
函数的使用非常直接。假设你有一个 XML 文档，你想获取所有
book
元素的名称，你可以这样写：
//book/name()
这会返回
book
元素节点的名称，即 “book”。 如果你想获取当前上下文节点的名称，你可以直接使用
name()
而不带任何参数：
name()
举个例子，假设我们有以下XML文档：
The Lord of the Rings J.R.R. TolkienA Brief History of Time Stephen Hawking
如果我们要获取所有
</pre> <div class="contentsignin"></div> </div> <p> 元素的名称，我们可以使用 XPath 表达式：</p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class='brush:xpath;toolbar:false;'>//title/name()</pre> <div class="contentsignin"></div> </div> <p>这将返回 “title”。</p> <p>XPath name()函数和local-name()函数有什么<span class="wpcom_tag_link"><a href="https://www.chuangxiangniao.com/p/tag/qubie" title="区别" target="_blank">区别</a></span>？</p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class="brush:php;toolbar:false;">name()</pre> <div class="contentsignin"></div> </div> <p> 函数返回节点的完整名称，包括命名空间前缀（如果存在）。而 </p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class="brush:php;toolbar:false;">local-name()</pre> <div class="contentsignin"></div> </div> <p> 函数只返回节点的本地名称，不包含任何命名空间前缀。在大多数情况下，如果你处理的 XML 文档没有使用命名空间，那么这两个函数的结果是一样的。但是，如果 XML 文档使用了命名空间，那么它们的区别就变得很重要了。</p> <p>例如，考虑以下 XML 片段：</p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class='brush:xml;toolbar:false;'> <pre>Content</pre> <div class="contentsignin"></div> </div> <p>如果使用 </p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class="brush:php;toolbar:false;">name(//prefix:element)</pre> <div class="contentsignin"></div> </div> <p>，结果将是 "prefix:element"。而如果使用 </p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class="brush:php;toolbar:false;">local-name(//prefix:element)</pre> <div class="contentsignin"></div> </div> <p>，结果将是 "element"。</p> <p>什么时候应该使用 </p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class="brush:php;toolbar:false;">name()</pre> <div class="contentsignin"></div> </div> <p> 而不是 </p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class="brush:php;toolbar:false;">local-name()</pre> <div class="contentsignin"></div> </div> <p>？ 这取决于你的具体需求。如果你需要知道节点是否属于某个特定的命名空间，那么 </p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class="brush:php;toolbar:false;">name()</pre> <div class="contentsignin"></div> </div> <p> 函数会更有用。如果你只关心节点的本地名称，那么 </p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class="brush:php;toolbar:false;">local-name()</pre> <div class="contentsignin"></div> </div> <p> 函数就足够了。</p> <p>如何使用XPath的name()函数进行条件判断？</p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class="brush:php;toolbar:false;">name()</pre> <div class="contentsignin"></div> </div> <p> 函数可以与 XPath 的其他函数和操作符结合使用，以进行更复杂的条件判断。 例如，你可以使用 </p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class="brush:php;toolbar:false;">name()</pre> <div class="contentsignin"></div> </div> <p> 函数来选择特定名称的节点，或者根据节点的名称执行不同的操作。</p> <p>假设你只想选择名称为 "book" 的所有节点，你可以使用以下 XPath 表达式：</p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class='brush:xpath;toolbar:false;'>//*[name()='book']</pre> <div class="contentsignin"></div> </div> <p>这个表达式会选择文档中所有名称为 "book" 的元素。</p> <p>或者，假设你想选择所有名称以 "title" 开头的元素，你可以使用 </p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class="brush:php;toolbar:false;">starts-with()</pre> <div class="contentsignin"></div> </div> <p> 函数：</p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class='brush:xpath;toolbar:false;'>//*[starts-with(name(), 'title')]</pre> <div class="contentsignin"></div> </div> <p>这个表达式会选择所有名称以 "title" 开头的元素，例如 </p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class="brush:php;toolbar:false;"><title></pre> <div class="contentsignin"></div> </div> <p> 和 </p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class="brush:php;toolbar:false;"></pre> <div class="contentsignin"></div> </div> <p>。</p> <p>实际上，在更复杂的场景中，你可能会结合多个条件。 比如，你可能想选择所有名称为 "book" 且 </p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class="brush:php;toolbar:false;">category</pre> <div class="contentsignin"></div> </div> <p> 属性为 "fiction" 的元素：</p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class='brush:xpath;toolbar:false;'>//*[name()='book' and @category='fiction']</pre> <div class="contentsignin"></div> </div> <p>XPath的name()函数性能如何？</p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class="brush:php;toolbar:false;">name()</pre> <div class="contentsignin"></div> </div> <p> 函数的性能通常是可以接受的，但在处理大型 XML 文档时，它的性能可能会成为一个瓶颈。 这是因为 </p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class="brush:php;toolbar:false;">name()</pre> <div class="contentsignin"></div> </div> <p> 函数需要在文档中查找每个节点的名称，这可能需要花费大量的时间。</p> <p>为了提高性能，可以考虑以下几点：</p> <p><strong>尽量使用更具体的 XPath 表达式</strong>： 避免使用通配符 </p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class="brush:php;toolbar:false;">//</pre> <div class="contentsignin"></div> </div> <p>，而是使用更具体的路径来定位节点。<strong>使用索引</strong>： 如果你的 XML 数据库支持索引，可以考虑为节点的名称创建索引。<strong>避免在循环中使用 </p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class="brush:php;toolbar:false;">name()</pre> <div class="contentsignin"></div> </div> <p> 函数</strong>： 如果需要在循环中多次获取同一个节点的名称，可以先将名称缓存到一个变量中，然后再在循环中使用该变量。<strong>考虑使用 </p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class="brush:php;toolbar:false;">local-name()</pre> <div class="contentsignin"></div> </div> <p> 函数</strong>： 如果你只需要节点的本地名称，那么 </p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class="brush:php;toolbar:false;">local-name()</pre> <div class="contentsignin"></div> </div> <p> 函数通常比 </p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class="brush:php;toolbar:false;">name()</pre> <div class="contentsignin"></div> </div> <p> 函数更快，因为它不需要处理命名空间前缀。</p> <p>总之，</p> <div class="code" style="position:relative;padding:0px;margin:0px"> <pre class="brush:php;toolbar:false;">name()</pre> <div class="contentsignin"></div> </div> <p> 函数是一个非常有用的 XPath 函数，可以用于获取节点的名称。但是，在使用它时，需要注意性能问题，并采取相应的优化措施。 很多时候，更具体的XPath表达式或者利用索引可以显著提升查询效率。</p> <p>以上就是XPath的name()函数如何获取节点名称？的详细内容，更多请关注创想鸟其它相关文章！</p> <div class="entry-readmore"><div class="entry-readmore-btn"></div></div> <div class="entry-copyright"><p>版权声明：本文内容由互联网用户自发贡献，该文观点仅代表作者本人。本站仅提供信息存储空间服务，不拥有所有权，不承担相关法律责任。<br> 如发现本站有涉嫌抄袭侵权/违法违规的内容， 请发送邮件至 chuangxiangniao@163.com 举报，一经查实，本站将立刻删除。<br> 发布者：程序猿，转转请注明出处：<span>https://www.chuangxiangniao.com/p/1430365.html</span></p></div> </div> <div class="entry-tag"><a href="https://www.chuangxiangniao.com/p/tag/name" rel="tag">name</a><a href="https://www.chuangxiangniao.com/p/tag/xpath" rel="tag">xpath</a><a href="https://www.chuangxiangniao.com/p/tag/qubie" rel="tag">区别</a></div> <div class="entry-action"> <div class="btn-zan" data-id="1430365"><i 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wi"><svg aria-hidden="true"><use xlink:href="#wi-thumb-up"></use></svg></i>0</span> </div> </div> </div> </li> <li class="item item2"> <div class="item-img"> <a class="item-img-inner" href="https://www.chuangxiangniao.com/p/1430351.html" title="XPath的lower-case()函数如何转换小写？" target="_blank" rel="bookmark"> <img width="480" height="300" src="https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png" class="attachment-default size-default wp-post-image j-lazy" alt="XPath的lower-case()函数如何转换小写？" decoding="async" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175540956754532.jpg?imageMogr2/crop/480x300/gravity/center" /> </a> <a class="item-category" href="https://www.chuangxiangniao.com/news-2" target="_blank">好文分享</a> </div> <div class="item-content"> <h3 class="item-title"> <a href="https://www.chuangxiangniao.com/p/1430351.html" target="_blank" rel="bookmark"> XPath的lower-case()函数如何转换小写？ </a> </h3> <div class="item-excerpt"> <p>lower-case()函数用于将字符串转为小写，语法为lower-case(string)，支持非字符串参数的自动转换，适用于不区分大小写的匹配、数据标准化等场景，如//item/name/lower-case(.)返回小写名称，结合contains()可实现忽略大小写的搜索，空节点返回空字符串，…</p> </div> <div class="item-meta"> <div class="item-meta-li author"> <a data-user="3" target="_blank" href="https://www.chuangxiangniao.com/user/3" class="avatar j-user-card"> <img alt='程序猿的头像' src='//cdn.chuangxiangniao.com/www/2025/10/2025102208472691.jpg' class='avatar avatar-60 photo' height='60' width='60' /> <span>程序猿</span> </a> </div> <span class="item-meta-li date">2025年12月17日</span> <div class="item-meta-right"> <span class="item-meta-li views" title="阅读数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-eye"></use></svg></i>0</span><a class="item-meta-li comments" href="https://www.chuangxiangniao.com/p/1430351.html#comments" target="_blank" title="评论数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-comment"></use></svg></i>0</a><span class="item-meta-li stars" title="收藏数"><i 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href="https://www.chuangxiangniao.com/p/1430349.html" target="_blank" rel="bookmark"> XPath的ancestor轴如何选择祖先节点？ </a> </h3> <div class="item-excerpt"> <p>ancestor轴用于向上追溯当前节点的所有祖先，从父节点直至根节点，支持通过节点类型和谓词条件（如属性、位置、内容）精准筛选目标祖先，常用于网页抓取中定位稳定容器、提取上下文信息或处理嵌套不规则的DOM结构。 XPath的 ancestor 轴，说白了，就是用来选定当前节点所有祖先的。它会从当前节…</p> </div> <div class="item-meta"> <div class="item-meta-li author"> <a data-user="3" target="_blank" href="https://www.chuangxiangniao.com/user/3" class="avatar j-user-card"> <img alt='程序猿的头像' src='//cdn.chuangxiangniao.com/www/2025/10/2025102208472691.jpg' class='avatar avatar-60 photo' height='60' width='60' /> <span>程序猿</span> </a> </div> <span class="item-meta-li date">2025年12月17日</span> <div class="item-meta-right"> <span class="item-meta-li views" title="阅读数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-eye"></use></svg></i>0</span><a class="item-meta-li comments" href="https://www.chuangxiangniao.com/p/1430349.html#comments" target="_blank" title="评论数"><i 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class="item-meta-li date">2025年12月17日</span> <div class="item-meta-right"> <span class="item-meta-li views" title="阅读数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-eye"></use></svg></i>0</span><a class="item-meta-li comments" href="https://www.chuangxiangniao.com/p/1430343.html#comments" target="_blank" title="评论数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-comment"></use></svg></i>0</a><span class="item-meta-li stars" title="收藏数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-star"></use></svg></i>0</span><span class="item-meta-li likes" title="点赞数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-thumb-up"></use></svg></i>0</span> </div> </div> </div> </li> <li class="item item2"> <div class="item-img"> <a class="item-img-inner" href="https://www.chuangxiangniao.com/p/1430341.html" title="XPath的preceding轴怎么选择之前的节点？" target="_blank" rel="bookmark"> <img width="480" height="300" 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<p>system-property()函数用于获取XSLT处理器的版本、供应商及网址信息，通过xsl:version、xsl:vendor和xsl:vendor-url三个标准属性实现，帮助解决版本兼容性问题和调试环境差异，提升样式表的可移植性与健壮性。 XPath的system-property() …</p> </div> <div class="item-meta"> <div class="item-meta-li author"> <a data-user="3" target="_blank" href="https://www.chuangxiangniao.com/user/3" class="avatar j-user-card"> <img alt='程序猿的头像' src='//cdn.chuangxiangniao.com/www/2025/10/2025102208472691.jpg' class='avatar avatar-60 photo' height='60' width='60' /> <span>程序猿</span> </a> </div> <span class="item-meta-li date">2025年12月17日</span> <div class="item-meta-right"> <span class="item-meta-li views" title="阅读数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-eye"></use></svg></i>0</span><a class="item-meta-li comments" href="https://www.chuangxiangniao.com/p/1430337.html#comments" target="_blank" title="评论数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-comment"></use></svg></i>0</a><span class="item-meta-li stars" title="收藏数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-star"></use></svg></i>0</span><span class="item-meta-li likes" title="点赞数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-thumb-up"></use></svg></i>0</span> </div> </div> </div> </li> <li class="item item2"> <div class="item-img"> <a class="item-img-inner" href="https://www.chuangxiangniao.com/p/1430335.html" title="XPath的parent轴和../有什么区别？" target="_blank" rel="bookmark"> <img width="480" height="300" src="https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png" class="attachment-default size-default wp-post-image j-lazy" alt="XPath的parent轴和../有什么区别？" decoding="async" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175544160723643.jpg?imageMogr2/crop/480x300/gravity/center" /> </a> <a class="item-category" href="https://www.chuangxiangniao.com/news-2" target="_blank">好文分享</a> </div> <div class="item-content"> <h3 class="item-title"> <a href="https://www.chuangxiangniao.com/p/1430335.html" target="_blank" rel="bookmark"> XPath的parent轴和../有什么区别？ </a> </h3> <div class="item-excerpt"> <p>parent轴和../是XPath中选择父节点的等价方式，前者为完整语法，后者为简写形式，效果完全相同，常用于简化表达式或提高可读性。 XPath 中 parent 轴和 ../ 实际上是同一件事，它们都用于选择当前节点的父节点。简单来说，它们是同义词，效果完全一样。 XPath 中， parent…</p> </div> <div class="item-meta"> <div class="item-meta-li author"> <a data-user="3" target="_blank" href="https://www.chuangxiangniao.com/user/3" class="avatar j-user-card"> <img alt='程序猿的头像' src='//cdn.chuangxiangniao.com/www/2025/10/2025102208472691.jpg' class='avatar avatar-60 photo' height='60' width='60' /> <span>程序猿</span> </a> </div> <span class="item-meta-li date">2025年12月17日</span> <div class="item-meta-right"> <span class="item-meta-li views" title="阅读数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-eye"></use></svg></i>0</span><a class="item-meta-li comments" href="https://www.chuangxiangniao.com/p/1430335.html#comments" target="_blank" title="评论数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-comment"></use></svg></i>0</a><span class="item-meta-li stars" title="收藏数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-star"></use></svg></i>0</span><span class="item-meta-li likes" title="点赞数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-thumb-up"></use></svg></i>0</span> </div> </div> </div> </li> <li class="item item2"> <div class="item-img"> <a class="item-img-inner" href="https://www.chuangxiangniao.com/p/1430326.html" title="XPath的id()函数怎么通过ID选择元素？" target="_blank" rel="bookmark"> <img width="480" height="300" src="https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png" class="attachment-default size-default wp-post-image j-lazy" alt="XPath的id()函数怎么通过ID选择元素？" decoding="async" data-original="https://cdn.chuangxiangniao.com/www/2025/12/175530834655683.jpg?imageMogr2/crop/480x300/gravity/center" /> </a> <a class="item-category" href="https://www.chuangxiangniao.com/news-2" target="_blank">好文分享</a> </div> <div class="item-content"> <h3 class="item-title"> <a href="https://www.chuangxiangniao.com/p/1430326.html" target="_blank" rel="bookmark"> XPath的id()函数怎么通过ID选择元素？ </a> </h3> <div class="item-excerpt"> <p>id()函数可高效定位带唯一ID的元素，语法为id(‘ID值’)，如id(‘submit-button’)直接选中对应元素；相比//[@id=”]，id()利用文档索引更快，且XPath 2.0+支持多ID查询如id(‘a b …</p> </div> <div class="item-meta"> <div class="item-meta-li author"> <a data-user="3" target="_blank" href="https://www.chuangxiangniao.com/user/3" class="avatar j-user-card"> <img alt='程序猿的头像' src='//cdn.chuangxiangniao.com/www/2025/10/2025102208472691.jpg' class='avatar avatar-60 photo' height='60' width='60' /> <span>程序猿</span> </a> </div> <span class="item-meta-li date">2025年12月17日</span> <div class="item-meta-right"> <span class="item-meta-li views" title="阅读数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-eye"></use></svg></i>0</span><a class="item-meta-li 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data-original="https://cdn.chuangxiangniao.com/www/2025/12/175532370569969.jpg?imageMogr2/crop/480x300/gravity/center" /> </a> <a class="item-category" href="https://www.chuangxiangniao.com/news-2" target="_blank">好文分享</a> </div> <div class="item-content"> <h3 class="item-title"> <a href="https://www.chuangxiangniao.com/p/1430322.html" target="_blank" rel="bookmark"> XPath的following轴怎么选择之后的节点？ </a> </h3> <div class="item-excerpt"> <p>xpath的following轴用于选择当前节点之后的所有非祖先、非属性、非命名空间节点，按文档顺序排列，可通过following::node()选择所有后续节点，或使用following::p、following::a[@href]、following::div[contains(@class,&…</p> </div> <div class="item-meta"> <div class="item-meta-li author"> <a data-user="3" target="_blank" href="https://www.chuangxiangniao.com/user/3" class="avatar j-user-card"> <img alt='程序猿的头像' src='//cdn.chuangxiangniao.com/www/2025/10/2025102208472691.jpg' class='avatar avatar-60 photo' height='60' width='60' /> <span>程序猿</span> </a> </div> <span class="item-meta-li date">2025年12月17日</span> <div 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data-original="/static/images/card_xiazai.png"></i></span><span><i class="item-images-el j-lazy" style="background-image: url('https://www.chuangxiangniao.com/wp-content/themes/justnews/themer/assets/images/lazy.png');" data-original="/static/images/cardxiayige-3.png"></i></span> </a> <div class="item-excerpt"> <p>preceding-sibling轴用于选择与当前节点同父且在文档顺序中位于其前的所有同级节点，例如在html中定位同一父元素下排在当前节点前面的兄弟元素；与preceding轴不同，后者范围更广，包含文档中所有非祖先的前置节点，而不仅限于同级；通过添加位置谓语[1]可精确选取紧邻的前一个同级节点，…</p> </div> <div class="item-meta"> <div class="item-meta-li author"> <a data-user="3" target="_blank" href="https://www.chuangxiangniao.com/user/3" class="avatar j-user-card"> <img alt='程序猿的头像' src='//cdn.chuangxiangniao.com/www/2025/10/2025102208472691.jpg' class='avatar avatar-60 photo' height='60' width='60' /> <span>程序猿</span> </a> </div> <span class="item-meta-li date">2025年12月17日</span> <span class="item-meta-li dot">•</span> <a class="item-meta-li" href="https://www.chuangxiangniao.com/news-2" target="_blank">好文分享</a> 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Error: 在这个例子中，…</p> </div> <div class="item-meta"> <div class="item-meta-li author"> <a data-user="3" target="_blank" href="https://www.chuangxiangniao.com/user/3" class="avatar j-user-card"> <img alt='程序猿的头像' src='//cdn.chuangxiangniao.com/www/2025/10/2025102208472691.jpg' class='avatar avatar-60 photo' height='60' width='60' /> <span>程序猿</span> </a> </div> <span class="item-meta-li date">2025年12月17日</span> <div class="item-meta-right"> <span class="item-meta-li views" title="阅读数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-eye"></use></svg></i>0</span><a class="item-meta-li comments" href="https://www.chuangxiangniao.com/p/1430309.html#comments" target="_blank" title="评论数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-comment"></use></svg></i>0</a><span class="item-meta-li stars" title="收藏数"><i class="wpcom-icon wi"><svg aria-hidden="true"><use xlink:href="#wi-star"></use></svg></i>0</span><span class="item-meta-li likes" 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