重复的模式/结构化数据标记? [英] Duplicate schema/structured data markup?

问题描述

这种结构会有问题吗?

<script type="application/ld+json">
{  
   "@context":"http://schema.org",
   "@type":"WebPage",
   "name":"Postcards",
   "url":"https://local.mysite.com/postcards.html",
   "breadcrumb":{  
      "@type":"BreadcrumbList",
      "itemListElement":[  
         {  
            "@type":"ListItem",
            "position":1,
            "item":{  
               "@id":"https://local.mysite.com",
               "name":"My Site"
            }
         },
         {  
            "@type":"ListItem",
            "position":2,
            "item":{  
               "@id":"https://local.mysite.com/postcards.html",
               "name":"Postcards"
            }
         }
      ]
   },
   "mainEntity":{  
      "@type":"WebPageElement",
      "offers":{  
         "@type":"Offer",
         "itemOffered":[  
            {  
               "@type":"Product",
               "name":"Christmas Postcards",
               "url":"https://local.mysite.com/christmas-postcards.html"
            },
            {  
               "@type":"Product",
               "name":"Getaway Postcards",
               "url":"https://local.mysite.com/getaway-postcards.html"
            }
         ]
      }
   }
}</script>

<script type="application/ld+json">
{  
   "@context":"http://schema.org",
   "@type":"WebPage",
   "name":"Postcards",
   "url":"https://local.mysite.com/postcards.html",
   "breadcrumb":{  
      "@type":"BreadcrumbList",
      "itemListElement":[  
         {  
            "@type":"ListItem",
            "position":1,
            "item":{  
               "@id":"https://local.mysite.com",
               "name":"My Site"
            }
         },
         {  
            "@type":"ListItem",
            "position":2,
            "item":{  
               "@id":"https://local.mysite.com/postcards.html",
               "name":"Postcards"
            }
         }
      ]
   },
   "mainEntity":{  
      "@type":"WebPageElement",
      "offers":{  
         "@type":"Offer",
         "itemOffered":[  
            {  
               "@type":"Product",
               "name":"Mini Postcards",
               "url":"https://local.mysite.com/mini-postcards.html"
            },
            {  
               "@type":"Product",
               "name":"Summer Postcards",
               "url":"https://local.mysite.com/summer-postcards.html"
            }
         ]
      }
   }
}</script>

对于单个类别页面可能存在这样的重复"标记的原因是该页面可能使用多个产品模板.

The reason there could be "duplicate" markup like this for a single category page is that the page may use multiple product templates.

在当前实现中，标记是在产品模板中动态构建的.例如，如果单个类别页面有两个产品模板，则标记将重建两次，但包含不同的 WebPageElement.

In the current implementation, the markup is dynamically constructed in the product template. For example, if there are two product templates for a single Category Page, the markup will be reconstructed twice, but containing different WebPageElement.

这会产生不好的结果吗?我检查了 Google 的测试工具，它没有给我任何错误或警告.

Will this yield bad results? I checked in Google's testing tool and it didn't give me any errors or warnings.

推荐答案

多个节点，同一个实体

如果您有多个节点代表页面上的同一实体，最佳做法是为这些节点提供相同的 URI 作为标识符.

使用 JSON-LD，您可以提供带有 @id 的标识符.

With JSON-LD, you can provide identifiers with @id.

所以

• 您的两个 WebPage 项目都可以获取 "@id": ""(对于当前 URL；最好在此处指定您的规范 URL)，
• 您的两个 BreadcrumbList 项目都可以得到 "@id": "#breadcrumbs",
• 您的 ListItem-1 项都可以得到 "@id": "#breadcrumbs-1" 和
• 您的 ListItem-2 项都可以得到 "@id": "#breadcrumbs-2".

• both of your WebPage items could get "@id": "" (for the current URL; preferably specify your canonical URL here),
• both of your BreadcrumbList items could get "@id": "#breadcrumbs",
• both of your ListItem-1 items could get "@id": "#breadcrumbs-1", and
• both of your ListItem-2 items could get "@id": "#breadcrumbs-2".

这样，Google 的 SDTT 将只显示这些项目中的每一个，因为它现在知道它们是关于同一个实体的.

That way, Google’s SDTT will display each of these items only once, because it now knows that they are about the same entity.

@id 还允许您引用节点而不是嵌入它们(从而复制它们的数据).查看示例.

@id also allows you to reference nodes instead of embedding them (and thereby duplicating their data). See an example.

在您的情况下，这样做的好处是您不必复制 WebPage/BreadcrumbList/ListItem 节点开始.您只需指定这些节点一次，然后每个产品模板将仅输出 Offer/Product 节点.这些节点可以包括对 WebPage/etc 的(反向)引用.(可能更容易实现)，或 WebPage/etc.可以引用这些节点.

In your case this would have the advantage that you don’t have to duplicate the WebPage/BreadcrumbList/ListItem nodes to begin with. You would specify these nodes once, and each product template would then outpout only the Offer/Product nodes. These nodes could include (reverse) references to the WebPage/etc. (might be easier for you to implement), or the WebPage/etc. could reference these nodes.

这篇关于重复的模式/结构化数据标记?的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！