RuntimeError：无法加载默认凭据

Question

我在我的项目中安装了google/cloud/translate，Gemfile.lock 中的版本是：

google-cloud-translate (2.1.0)

使用以下代码：

require "google/cloud/translate"
project_id = "<Project ID>" # from my Google Cloud Platform
translate = Google::Cloud::Translate.new version: :v2, project_id: project_id

这就是documentation 所说的以及这个answer 相关的建议（请注意我使用的是v2 而不是v3）

RuntimeError: Could not load the default credentials. Browse to
https://developers.google.com/accounts/docs/application-default-credentials for more information

这部分返回true：

require "google/cloud/translate"

更新 我已经按照以下所有步骤操作：

https://cloud.google.com/docs/authentication/production

创建了一个服务帐户、一个凭据密钥并设置了 env 变量（在 Windows 上），然后我尝试使用 google/cloud/storage 示例测试凭据配置，它工作正常，但是当我尝试使用：google/cloud/translate gem 时

translate = Google::Cloud::Translate.new version: :v2, project_id: project_id

我还是遇到了同样的错误

可能是什么错误？ 提前感谢您的帮助。

Answer 1

您好，您需要将 .json 文件与您的 google 服务帐户的所有密钥一起保存，一旦您将该文件放在项目的同一路径中，您就可以执行类似以下代码的操作：

    module GoogleTranslator
        require "google/cloud/translate"
        ENV["GOOGLE_APPLICATION_CREDENTIALS"] = "yourfile.json"
        class Translate
            attr_reader :project_id, :location_id, :word, :target_language
            def initialize(project_id, location_id, word, target_language)
                @project_id         = project_id
                @location_id        = location_id
                @word               = word
                @target_language    = target_language
            end
    
            def translate
                client = Google::Cloud::Translate.translation_service
                parent = client.location_path project: project_id, location: location_id
                response = client.translate_text(parent: parent, contents: word.words.to_a, target_language_code: target_language)
                translate_content(response)
            end
    
            def translate_content(response)
                word.translation(response)
            end
        end
    end
    
    class Word
        attr_reader :words
        def initialize(words)
            @words = words
        end
    
        def translation(words)
            words.translations.each do |word|
                puts word.translated_text
            end
        end
    end
    
    module GoogleTranslatorWrapper
        def self.translate(project_id:, location_id:, word:, target_language:)
            GoogleTranslator::Translate.new(project_id, location_id, word, target_language)
        end
    end
    
    GoogleTranslatorWrapper.translate(project_id: "your_project_id_on_google", location_id: "us-central1", word: Word.new(["your example word"]), target_language: "es-mx").translate

希望这可以清楚:)...！

Answer 2

1. 创建服务帐号：

   gcloud iam service-accounts create rubyruby --description "rubyruby" --display-name "rubyruby"
   

2. 获取服务帐号名称：

   gcloud iam service-accounts list
   

3. 为您的服务帐户创建凭据密钥文件：

   gcloud iam service-accounts keys create key.json --iam-account rubyruby@your-project.iam.gserviceaccount.com
   

4. 设置环境变量：

   export GOOGLE_APPLICATION_CREDENTIALS=key.json
   

5. 启用翻译 API

6. 安装库：

   gem install google-cloud-translate
   

7. 编辑ruby.rb 脚​​本

   # project_id = "Your Google Cloud project ID"
   # text       = "The text you would like to detect the language of"

   require "google/cloud/translate"
   text = 'I am home'

   translate = Google::Cloud::Translate.new version: :v2, project_id: project_id
   detection = translate.detect text

   puts "'#{text}' detected as language: #{detection.language}"  
   puts "Confidence: #{detection.confidence}"

8. 运行脚本：

   ruby ruby.rb
   

9. 输出：

   'I am home' detected as language: en
   Confidence: 1