xml - 谷歌通讯录 API : Unauthorized 401 Unknown authorization header

Question

我已仔细阅读 Google Contacts API 文档，但无法正确获取 PUT 请求(即更新)。我将 Ruby on Rails 3.2 与 OAuth gem (v0.4.5) 一起使用。我使用 Omniauth 获取 token ，范围定义为“https://www.google.com/m8/feeds”

让我演示一下:

ruby-1.9.2-p290 :001 > @access_token.get("https://www.google.com/m8/feeds/contacts/default/full/c1f86b48b52548c", {"GData-Version" => "3.0"})
=> #<Net::HTTPOK 200 OK readbody=true>

如您所见，GET 请求运行良好，因此我的 OAuth 访问 token 应该没问题。 DELETE 请求也有效:

ruby-1.9.2-p290 :002 > @access_token.delete('https://www.google.com/m8/feeds/contacts/default/full/c1f86b48b52548c', { 'GData-Version' => '3.0', 'If-Match' => '"RH46fTVSLyt7I2A9Wx9VFkgMQAU."' })
 => #<Net::HTTPOK 200 OK readbody=true>

到目前为止，还不错。在这里，我按照 Google 文档 [1] 中的说明在请求 header 中提供了联系人条目的 Etag。所以它不应该造成任何麻烦。

根据 OAuth gem 文档 [2]，PUT 请求的语法应如下所示:

- (Object) put(path, body = '', headers = {})

以及文档中的示例:

@token.put('/people/123', @person.to_xml, { 'Accept' => 'application/xml', 'Content-Type' => 'application/xml' })

据我所知，我应该发送一个简单的 XML 字符串作为 PUT 请求的主体。因此，让我们先获取一些示例数据:

ruby-1.9.2-p290 :003 > xmldata = @access_token.get("https://www.google.com/m8/feeds/contacts/default/full/5f74bf0d5c621a", {"GData-Version" => "3.0"}).body

=> "<?xml version='1.0' encoding='UTF-8'?>
      <entry xmlns='http://www.w3.org/2005/Atom' xmlns:gContact='http://schemas.google.com/contact/2008' xmlns:batch='http://schemas.google.com/gdata/batch' xmlns:gd='http://schemas.google.com/g/2005' gd:etag='&quot;R3w4fzVSLit7I2A9WhRaGEQCQgc.&quot;'>
        <id>http://www.google.com/m8/feeds/contacts/my.email%40address.com/base/5f74bf0d5c621a</id>
        <updated>2012-02-22T08:15:36.237Z</updated>
        <app:edited xmlns:app='http://www.w3.org/2007/app'>2012-02-22T08:15:36.237Z</app:edited>
        <category scheme='http://schemas.google.com/g/2005#kind' term='http://schemas.google.com/contact/2008#contact'/>
        <title>Joe Average</title>
        <link rel='http://schemas.google.com/contacts/2008/rel#photo' type='image/*' href='https://www.google.com/m8/feeds/photos/media/my.email%40address.com/5f74bf0d5c621a?v=3.0'/>
        <link rel='self' type='application/atom+xml' href='https://www.google.com/m8/feeds/contacts/my.email%40address.com/full/5f74bf0d5c621a?v=3.0'/>
        <link rel='edit' type='application/atom+xml' href='https://www.google.com/m8/feeds/contacts/my.email%40address.com/full/5f74bf0d5c621a?v=3.0'/>
        <gd:name>
          <gd:fullName>Joe Average</gd:fullName>
          <gd:givenName>Joe</gd:givenName>
          <gd:familyName>Average</gd:familyName>
        </gd:name>
        <gd:email rel='http://schemas.google.com/g/2005#other' address='joe.average@isp.net' primary='true'/>
      </entry>"

...并尝试将其更新回 Google:

ruby-1.9.2-p290 :004 > @access_token.put("https://www.google.com/m8/feeds/contacts/default/full/5f74bf0d5c621a", xmldata, {"GData-Version" => "3.0", 'If-Match' => '"R3w4fzVSLit7I2A9WhRaGEQCQgc."'})

=> #<Net::HTTPUnauthorized 401 Unknown authorization header readbody=true>

所以这行不通。让我们尝试稍微精简 XML，使其看起来与文档 [1] 中的一样:

xmldata = "<entry gd:etag='&quot;R3w4fzVSLit7I2A9WhRaGEQCQgc.&quot;'>
             <id>http://www.google.com/m8/feeds/contacts/my.email%40address.com/base/5f74bf0d5c621a</id>
             <updated>2012-02-22T08:15:36.237Z</updated>
             <category scheme='http://schemas.google.com/g/2005#kind' term='http://schemas.google.com/contact/2008#contact'/>
             <link rel='http://schemas.google.com/contacts/2008/rel#photo' type='image/*' href='https://www.google.com/m8/feeds/photos/media/my.email%40address.com/5f74bf0d5c621a?v=3.0'/>
             <link rel='self' type='application/atom+xml' href='https://www.google.com/m8/feeds/contacts/my.email%40address.com/full/5f74bf0d5c621a?v=3.0'/>
             <link rel='edit' type='application/atom+xml' href='https://www.google.com/m8/feeds/contacts/my.email%40address.com/full/5f74bf0d5c621a?v=3.0'/>
             <gd:name>
               <gd:fullName>Joe Average</gd:fullName>
               <gd:givenName>Joe</gd:givenName>
               <gd:familyName>Average</gd:familyName>
             </gd:name>
             <gd:email rel='http://schemas.google.com/g/2005#other' address='joe.average@isp.net' primary='true'/>
           </entry>"

但是运气不好，和之前的错误一模一样。

这就是我现在完全陷入困境的地方。对于正确方向的任何提示，我将不胜感激。

[1] https://developers.google.com/google-apps/contacts/v3/#updating_contacts

[2] http://rubydoc.info/gems/oauth/0.4.5/OAuth/AccessToken

Answer 1

尝试在 PUT 请求中将 Content-Type header 设置为“application/atom+xml”。我遇到了类似的问题，这样做很有帮助。