Ruby on rails 3 google api ruby客户端找不到类PKCS12&；JWTAsserter

我在google api ruby客户端收到以下错误：

NameError: uninitialized constant Google::APIClient::PKCS12 
NameError: uninitialized constant Google::APIClient::JWTAsserter

以下是我的代码摘要：

require 'google/api_client'

class Commissions::GoogleAffiliateNetwork < ActiveRecord::Base

  def self.path_to_key_file
    Rails.root + 'config/xxx-privatekey.p12'
  end

  def self.passphrase
    'supersecretphrase'
  end

  def self.service_email
    '42@developer.gserviceaccount.com'
  end

  def api_auth_uri
    'https://www.googleapis.com/auth/gan'
  end

  def self.make_request(opts = {})
    key = Google::APIClient::PKCS12.load_key(path_to_key_file, passphrase)
    asserter = Google::APIClient::JWTAsserter.new(service_email, api_auth_uri, key)

    api_client = Google::APIClient.new
    api_client.authorization = asserter.authorize()
  end

end

---

我遗漏了什么吗？

您使用的是哪个版本的gem？你能检查一下你是否在0.4.4上吗？是的，这就是问题所在-出于某种原因安装了0.3.0。升级到0.4.4后，问题就解决了！非常感谢。@Stevebazil必须把这些作为答案，伙计。：-）

gem 'google-api-client'