如何获取较大版本的Facebook的缩略图？ [英] How to get larger version of Facebook's thumbnail images?
问题描述
现在，Facebook API正在返回一个这样的URL，所有的帖子/专辑图片大小为130x130像素：
Right now the Facebook API is returning a URL like this with all post/album images 130x130 pixels in size:
https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xfp1/v/t1.0-9/s130x130/10801504_570625556403546_6496651209845129904_n.jpg?oh=dcf8ab3752522532871d2aaab09b6e7e&oe=54E4402F&gda=1424027679_76464aeeaa5d232b8100d01476af4ec7
如何根据该网址检索完整（或任何更大的大小）图像？
How do I retrieve a full (or any bigger size) image based on that URL?
例如这个：
https://fbcdn-sphotos-h-a.akamaihd.net/hphotos-ak-xfp1/v/t1.0-9/p417x417/10801504_570625556403546_6496651209845129904_n.jpg?oh=cd2b5cb0d74f7306c098de9f56dc6e27&oe=54E1F4C1&gda=1423830001_e700bfac39039952bfee55b200c158bf
<
or anything like that?
从URL或/v/t1.0-9/删除s130x130的所有其他建议，或用_n或类似的任何东西替换_s都是无效的再试一次 - 如果你不信我，就自己尝试一下。有没有办法让这种情况发生？不确定什么Facebook的家伙已经改变，以禁用...
All the other suggestions of removing s130x130 from the URL, or /v/t1.0-9/, or replacing _s with _n or anything like that aren't valid any more - I've tried them all (try them yourself if you don't believe me). Is there a way to make this happen? Not sure what Facebook guys have changed to disable that...
推荐答案
经过几个小时搜索和拉我的头发，我找到了一个适用于我的解决方案。在我的情况下，我从{page-id} /帖子中提取帖子，但我很确定这也适用于您，看到我曾经使用与您提到的相同的方法获取更大的图像。
After a couple of hours searching and pulling my hair out, I found a solution that works for me. In my case I'm pulling posts from {page-id}/posts, but I'm pretty sure this will work for you too, seeing that I used to get larger images using the same approach as you mention.
这对我有用：
bigger_image="https://graph.facebook.com/" + picture_url_from_facebook.match(/_\d+/)[0].slice(1) + "/picture?type=normal";
- / _ \d + /匹配从下划线开始的任何子字符串_）后跟任何数字（\d匹配一个数字，\d +数字匹配一遍又一遍，直到失败）
- match（regex）返回一个包含所有字符串的数组可以找到匹配指定的正则表达式
- 我们抓住第一个（[0]）元素，因为这将是一个下划线，后面是Facebook数据库中的图片ID
- 我们将字符串从索引1切割到最后，因为下划线不是ID的一部分。
- 然后我们使用图形API获取一个来自facebook的工作链接，而不是需要任何额外的电话（您可以直接使用这个例如一个img标签）
- /_\d+/ matches any substring starting with an underscore (_) followed by any digits (\d matches one digit, \d+ does the digit match over and over until it fails)
- match(regex) returns an array with all strings it could find matching the specified regex
- we grab the first ([0]) element, as this will be an underscore followed by the ID of the picture in Facebook's database
- we slice the string from index 1 to the end, as the underscore is not a part of the ID
- we then get a working link from facebook using the graph api without the need for any extra calls (you can use this in for example an img tag directly)
你可以看到这个工作在行动@ 这个小提琴或我们为客户提供的这个页面
You can see this working in action @ this fiddle or this page we did for a client
T打破呃Adhish 引领解决方案@ https://stackoverflow.com/a/27075503/2908761
Thanks to Er Adhish for leading the way to the solution @ https://stackoverflow.com/a/27075503/2908761
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