这是我用 facebook 调试器测试后得到的结果:
developers.facebook.com/tools/debug/og/echo?q=http%3A%2F%2Feqnetwork.com%2Ficons%2Fmgen%2FoverplayThumbnail.ms%3Fdrid%3D15162%26subType%3Dljpg%26w%3D120%26h%3D120%26o%3D1%26thumbnail%3D
下面是抓取的网址。所以很明显有一个CDN错误。
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN" "http://www.w3.org/TR/REC-html40/loose.dtd">
<html><head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<b>06/12/2012 15:33:12 ***** CDNMGEN2 reported an error *****</b><br><br><tt>
MRL: /mgen/overplayThumbnail.ms?drid=15162&subType=ljpg&w=120&h=120&o=1&thumbnail<br><br>
A filter error occurred while processing '/mgen/overplayThumbnail.ms?drid=15162&subType=ljpg&w=120&h=120&o=1&thumbnail':<br>Missing value for overplayThumbnail.ms?drid=15162&subType=ljpg&w=120&h=120&o=1&thumbnail at thumbnail</tt>
</head></html>
这是对应该提供的缩略图值的抱怨。