blocks|key|1556122|text|对于返回与图书本身没有关联的类别，Google+book+api没有端点。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1556123|Google+books+api仅用于列出图书。你可以的|1556124|1556125|搜索和浏览与给定查询匹配的图书列表。|unordered-list-item|1556126|查看有关图书的信息，包括元数据、可用性和价格，以及指向预览页的链接。|1556127|管理您自己的书架。|1556128|1556129|你可以看到一本书的类别，但无法在整个系统中获得可用类别的列表|1556130|您可能有兴趣知道，自2012年category+list以来，这一直在他们的待办事项列表中|offset|length|1556131|1556132|我们有很多这样的请求，我们正在研究如何正确地提供数据。一个问题是谷歌并不拥有所有的分类信息。“纽约时报畅销书”就是一个明显的例子。我们需要首先确定可以通过API发布的内容。|blockquote|1556133|1556134|1556135|解决方法|1556136|1556137|我通过实现自己的类别列表机制解决了这个问题，这样我就可以提取我的应用程序数据库中存在的所有类别。(不幸的是，新宣布的ScriptDb弃用意味着我的整个系统将在几个月内浪费掉……但那是另一回事了)|1556138|1556139|entityMap|0|LINK|mutability|MUTABLE|url|https://productforums.google.com/forum/#!topic/books-api/FUdHdsvDlP4;context-place=forum/books-api^0|0|0|0|0|0|0|0|0|F|D|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1C|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|1D|8|@]|9|@]|A|$]]|$1|D|3|-4|5|6|7|1E|8|@]|9|@]|A|$]]|$1|E|3|F|5|G|7|1F|8|@]|9|@]|A|$]]|$1|H|3|I|5|G|7|1G|8|@]|9|@]|A|$]]|$1|J|3|K|5|G|7|1H|8|@]|9|@]|A|$]]|$1|L|3|-4|5|6|7|1I|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|1J|8|@]|9|@]|A|$]]|$1|O|3|P|5|6|7|1K|8|@]|9|@$Q|1L|R|1M|1|1N]]|A|$]]|$1|S|3|-4|5|6|7|1O|8|@]|9|@]|A|$]]|$1|T|3|U|5|V|7|1P|8|@]|9|@]|A|$]]|$1|W|3|-4|5|6|7|1Q|8|@]|9|@]|A|$]]|$1|X|3|-4|5|6|7|1R|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|6|7|1S|8|@]|9|@]|A|$]]|$1|10|3|-4|5|6|7|1T|8|@]|9|@]|A|$]]|$1|11|3|12|5|V|7|1U|8|@]|9|@]|A|$]]|$1|13|3|-4|5|6|7|1V|8|@]|9|@]|A|$]]|$1|14|3|-4|5|6|7|1W|8|@]|9|@]|A|$]]]|15|$16|$5|17|18|19|A|$1A|1B]]]]

The Google books api does not have an end point for returning Categories that are not associated with a book itself.

The Google Books api is only there to list books. You can

<ul>
<li>search and browse through the list of books that match a given query.</li>
<li>view information about a book, including metadata, availability and price, links to the preview page.</li>
<li>manage your own bookshelves.</li>
</ul>

You can see the category of a book you can not get a list of available categories in the whole system

You may be interested to know this has been on their todo list since 2012 <a href="https://productforums.google.com/forum/#!topic/books-api/FUdHdsvDlP4;context-place=forum/books-api" rel="noreferrer">category list</a>

<blockquote>
 We have numerous requests for this and we're investigating how we can properly provide the data. One issue is Google does not own all the category information. "New York Times Bestsellers" is one obvious example. We need to first identify what we can publish through the API.
</blockquote>

work around

<blockquote>
 i worked around it by implementing my own category list mechanism so i can pull all categories that exists in my app's database.
 (unfortunately, the newly announced ScriptDb deprecation means my whole system will go to waste in a couple of monthes anyway... but that's another story)
</blockquote>

blocks|key|1553798|text|https://support.google.com/books/partner/answer/3237055?hl=en|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1553799|向下滚动到主题/流派，您将看到此链接。|1553800|https://bisg.org/page/bisacedition|1553801|这个列表显然是北美图书的主题类别列表。我正在使用API测试工具发出各种GET请求，并且大多数情况下都是完美匹配(您可能需要从查询字符串中删除一个单词。例如：“批评”而不是“文学批评”)，无论我从BISG主题列表中选择什么主题，以及在“类别”键下的json响应中返回的内容。|1553802|例如:获取https://www.googleapis.com/books/v1/volumes?q=business%2Bsubject:juvenile%2Bfiction|1553803|长话短说，BISG链接是我非常确定Google的“类别”关键字的所有选项的地方。|1553804|entityMap|0|LINK|mutability|MUTABLE|url|1|2|https://www.googleapis.com/books/v1/volumes?q=business%2Bsubject:juvenile%2Bfiction^0|0|1P|0|0|0|0|Y|1|0|0|5|27|2|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@$A|Y|B|Z|1|10]]|C|$]]|$1|D|3|E|5|6|7|11|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|12|8|@]|9|@$A|13|B|14|1|15]]|C|$]]|$1|H|3|I|5|6|7|16|8|@]|9|@]|C|$]]|$1|J|3|K|5|6|7|17|8|@]|9|@$A|18|B|19|1|1A]]|C|$]]|$1|L|3|M|5|6|7|1B|8|@]|9|@]|C|$]]|$1|N|3|-4|5|6|7|1C|8|@]|9|@]|C|$]]]|O|$P|$5|Q|R|S|C|$T|4]]|U|$5|Q|R|S|C|$T|G]]|V|$5|Q|R|S|C|$T|W]]]]

<a href="https://support.google.com/books/partner/answer/3237055?hl=en" rel="nofollow noreferrer">https://support.google.com/books/partner/answer/3237055?hl=en</a>
Scroll down to subject/genres and you will see this link.
<a href="https://bisg.org/page/bisacedition" rel="nofollow noreferrer">https://bisg.org/page/bisacedition</a>
This list is apparently a list of subjects AKA categories for North American Books. I am making various GET requests with an API testing tool and getting for the most part, perfect matches (you may have to drop a word from the query string. ex: &quot;criticism&quot; instead of &quot;literary criticism&quot;) for whatever subject I choose from the BISG subjects list, and what comes back in the json response under the &quot;categories&quot; key.
Ex: GET <a href="https://www.googleapis.com/books/v1/volumes?q=business+subject:juvenile+fiction" rel="nofollow noreferrer">https://www.googleapis.com/books/v1/volumes?q=business+subject:juvenile+fiction</a>
Long story short, the BISG link is where I'm pretty sure Google got all the options for their &quot;categories&quot; key from.

I was searching for an already answered question about this but couldn't find one so please forgive me if I somehow missed it.

I'm using Google Books API and I know I can search a book by specific category.

My question is, how can I get all the available categories from the API?
I looked in the API documentation but couldn't find any mention of this.

How to get list of categories in Google Books API?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在寻找一个关于这个问题的答案，但是找不到，所以如果我不知何故错过了，请原谅我。我正在使用Google Books API，我知道我可以按特定类别搜索一本书。我的问题是，如何从API获取所有可用的类别？我查看了API文档，但没有找到任何提及这一点的内容。

问如何在Google Books API中获取分类列表？
EN

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问如何在Google Books API中获取分类列表？EN