问题
I've been struggling with these for months now.
I just changed them and the Facebook Debugger thinks everything's fine except for admins and app ID whih I hope I don't have to get into.
But, when the like button is clicked, some posts show my generic favicon, some show an image for an old post, some show no image at all, and a rare few show an image from the post.
Some of them show the correct title of the blog post, some show a link instead, some show nothing.
I was hoping that a brief snippet of text from the post would show but that never happens.
This all seems to be totally random. Here's my code for my site:
<!-- BEGIN Open Graph tags -->
<meta expr:content='data:blog.metaDescription' name='description' property='og:description'/>
<meta expr:content='data:blog.pageTitle' name='keywords'/>
<b:if cond='data:blog.pageType == "item"'>
<meta content=blog' property='og:type'/>
<meta content='http://speechnotrecognised.blogspot.com.au/2012/08/our-second-first-post_28.html' property='article:author'/>
<meta expr:content='data:blog.url' property='og:url'/>
<meta expr:content='data:blog.pageName' property='og:title'/>
<b:if cond='data:blog.postImageThumbnailUrl'>
<meta expr:content='data:blog.postImageThumbnailUrl' property='og:image'/>
<b:else/>
<meta content='http://i1252.photobucket.com/albums/hh569/speechnotrecognised/snricon4_zpsde4bdf38.jpg' property='og:image'/>
</b:if>
<b:else/>
<meta expr:content='data:blog.title' property='og:title'/>
<meta expr:content='data:blog.homepageUrl' property='og:url'/>
<meta content='blog' property='og:type'/>
<meta content='http://i1252.photobucket.com/albums/hh569/speechnotrecognised/snricon4_zpsde4bdf38.jpg' property='og:image'/>
</b:if>
<meta expr:content='"en_US"' property='og:locale'/>
<!-- END Open Graph tags -->
回答1:
I see several problems with your code: - you are using the blog title to generate keywords?! - for individual blog posts og:type should be 'article' not 'blog'; - I don't think you can use an URL for article:author; - you don't specify either your Facebook admin ID or the app ID; - you should use the canonical URL instead of data:blog.homepageUrl to work around blogger's country redirection.
Here is my solution: Open Graph markup for Blogger [version 3]
来源：https://stackoverflow.com/questions/12805062/facebook-open-graph-tags-for-blogger