September 2022
Intermediate to advanced
585 pages
8h 17m
Chinese
Content preview from JavaScript 经典实例：第三版
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546
｜
第
21
章
%2FAAAAAAAAAAAAAAAAAAAA%3DAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"}
每次请求
API
都要使用访问令牌。没有其他授权步骤了，整个过程十分简单。另外
说明一下，因为这是应用层面的授权，所以不需要个人授权，对用户的影响较少。
Twitter
网站中有详细文档。推荐阅读“
Application-only authentication
overview
”一文（
https://oreil.ly/Mikyl
）。
OAuth 1.0
读写授权
应用自身验证适合用于访问只读数据，但是如果你想访问用户的特定数据，甚至想
修改用户的数据，该怎么办呢？这种情况需要完整的
OAuth
授权。本节仍以
Twitter
为例演示，因为
Twitter
使用
OAuth 1.0
授权。下一节再讲
OAuth 2.0
。
笔者说
Twitter
使用
OAuth 1.0
，但其实
Twitter
的服务基于
OAuth Core 1.0
Revision A
（
http://oauth.net/core/1.0a
）。不过，说是
OAuth 1.0
更简单。
OAuth 1.0
需要数字签名。获取数字签名的步骤如图
21-3
所示。
Twitter
文档中列出
了具体步骤，如下所示。
1.
收集
HTTP
方法和基
URI
（不含查询字符串）。
2.
收集参数，包括使用者密钥、请求数据、随机数（
nonce
）、签名方法等。
3.
创建一个签名基字符串，包括我们收集的数据，以严格的方式组成一个字符串，
并且恰当编码。 ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.