Facebook缓存打开的图形图像设置无法在Wordpress网站上正确显示

Question

In the header of our blog I've added the following to set the FB open graph image equal to the highlight image of the post:

<?php if ( has_post_thumbnail() ) : ?>
<meta property="og:image" content="<?php echo wp_get_attachment_url( get_post_thumbnail_id($post->ID, 'hero-large') ); ?>"/>
<?php else : ?>
<meta property="og:image" content="http://myblog.com/apple-touch-icon-114x114-precomposed.png"/>
<?php endif; ?>

Then, when I load the page in production, if I look at the html in my head element I see the correct path to the post image:

<meta property="og:image" content="http://myblog.com/wp-content/uploads/2014/03/myimage.png"/>

However, if I paste a link to that post page into Facebook, three completely random images from past posts elsewhere on my blog appear as the Facebook post image choices.

I don't have any open graph plugins installed and there's no caching issue (or caching plugin) doing this, so I'm confused why Facebook seems to be ignoring my og:image meta tag. Any suggestions on where I should be looking for a solution?

Answer 1

http://developers.facebook.com/tools/debug插入您的URL，让调试器抓取您的页面并清除缓存。