What does it mean Inferred Property in facebook opengraph [duplicate]

问题

This question already has an answer here:

Closed 7 years ago.

Possible Duplicate:
get wrong ogtype in object debugger

I have a website integrated with FB open graph. I have my objects and actions defined and now if I debug my page in the facebook debugger I get the warnings:

Inferred Property: The 'og:url' property should be explicitly provided, even if a value can be inferred from other tags.

Inferred Property: The 'og:title' property should be explicitly provided, even if a value can be inferred from other tags.

Inferred Property: The 'og:description' property should be explicitly provided, even if a value can be inferred from other tags.

Inferred Property: The 'og:image' property should be explicitly provided, even if a value can be inferred from other tags.

I have founds tons of post about this issue but I am still not getting how can I fix it. On that page I have following meta tags in the header:

<meta content='' name='fb:appid'>
<meta content="test" name='og:description'>
<meta content="test" name='og:title'>
<meta content='...' name='og:url'>
<meta content='...' name='og:image'>

Can someone please help?

回答1:

Change the 'name' tags to 'property' like -

<meta content="..." property="og:description"/>
<meta content="..." property="og:title"/>

And it should work fine. Refer to - http://ogp.me/ for examples.

来源：https://stackoverflow.com/questions/13045824/what-does-it-mean-inferred-property-in-facebook-opengraph