为什么Facebook不能分享我的Firebase存储映像文件？ [英] Why can't Facebook share pick up my Firebase storage image file?

问题描述

我有以下按钮：

 < a class =btn btn-social btn-facebookhref = https://www.facebook.com/dialog/feed?app_id=1732jjjjjjj 
& redirect_uri = {{statusUrl}} 
& link = https：//sitename.com/ {{statusUrl} } 
& name = {{isTitle}} 
& picture = https：//firebasestorage.googleapis.com/v0/b/rrrr.appspot.com/o/eWebcontent%2Fc0638f6c65d2aa5c81f9ef820531eda2？alt = media& token = 93c157e6-05ec-4efe-8ca5-86942cfac742 
& caption = www.sitename.com 
& author = Author 
& description = {{statusDesc}} 
& properties = {text：'value1'，key2：'value2'} 
& actions = {name：'我爱你'，链接：'https：//www.sitename.com' }&& 
 display = popup> 
  

除了图像不显示外，其他一切工作正常。
它只是显示一个空格。

这是一个页面的网站，所以我可以用打开的图表元标签来做很多。 >

为什么Facebook不能显示图像？

解决方案

如我所知，这里的问题与处理字符转义不同的网站有关。

您的图片命名为 eWebcontent％2Fc0638f6c65d2aa5c81f9ef820531eda2 ，因为Firebase Storage已将 / 编码为％2F 。我假设Facebook（和其他一些网站）尝试对％字符（％25 ）进行重新编码，这意味着Facebook实际上正在寻找一个名为 ...％252F ... 的图片，而不是找到它。不幸的是，我似乎无法使用其他百分号编码的字符重现这个问题，所以我感到困惑，如果它不知何故只是一个问题， / 或什么。

目前的解决方案是简单地不要将 / s放在你的URL中（例如只是命名你的图像 c0638f6c65d2aa5c81f9ef820531eda2 或某事。

I have the following button:

 <a class="btn btn-social btn-facebook" href="https://www.facebook.com/dialog/feed?app_id=1732jjjjjjj
                &redirect_uri={{statusUrl}}
                &link=https://sitename.com/{{statusUrl}}
                &name={{isTitle}}
                &picture=https://firebasestorage.googleapis.com/v0/b/rrrr.appspot.com/o/eWebcontent%2Fc0638f6c65d2aa5c81f9ef820531eda2?alt=media&token=93c157e6-05ec-4efe-8ca5-86942cfac742
                &caption=www.sitename.com
                &author=Author
                &description={{statusDesc}}.
                &properties={text:’value1′,key2:’value2′}
                &actions={name:’I LOVE u’,link:’https://www.sitename.com’}&&
  display=popup">

Everything else works fine, except that the image doesn't show up. It just shows a blank space.

It's a one page site, so there is not much I can do with the open graph meta tags.

Why isn't facebook able to show the image?

解决方案

As far as I can tell, the issue here has to do with websites handling character escaping differently.

Your image is named eWebcontent%2Fc0638f6c65d2aa5c81f9ef820531eda2 since Firebase Storage has encoded the / as %2F. I assume that Facebook (and some other sites) try to re-percent encode the % character (%25), meaning that Facebook is actually looking for an image named ...%252F..., and not finding it. Unfortunately, I can't seem to reproduce this using other percent encoded characters, so I'm confused if it's somehow just an issue with / or what.

The current solution is to simply not place /s in your URLs (e.g. just name your image c0638f6c65d2aa5c81f9ef820531eda2 or something.

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