RuntimeError:无法加载默认凭据

Question

我已经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

这是文档所说的，也是回答相关的建议(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

此部分返回true：

require "google/cloud/translate"

Update I已经执行了以下所有步骤：

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

创建一个服务帐户，一个凭据密钥，并设置env变量(在Windows上)，然后我尝试用google/cloud/storage示例测试凭据配置，它运行良好，但当我尝试使用：google/cloud/translate gem时

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

我还是犯了同样的错误

什么是错误？提前感谢您的帮助。

Answer 1

为此，您将需要使用google帐户的所有密钥的.json文件，一旦您在项目的相同路径中拥有该文件，您可以执行如下代码：

    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

希望这能清楚：)！

Answer 2

1. 创建一个服务帐户： gcloud iam服务-帐户创建rubyruby -描述"rubyruby“显示名称"rubyruby”
2. 获取服务帐户名称： gcloud iam服务-帐户列表
3. 为服务帐户创建凭据密钥文件： gcloud服务-帐户键创建key.json --账户rubyruby@you-project.iam.gserviceAccount.com
4. 设置env变量： 导出GOOGLE_APPLICATION_CREDENTIALS=key.json
5. 启用转换API
6. 安装库： gem安装google-云翻译
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}"

1. 运行脚本： 红宝石ruby.rb
2. 输出： “我在家”被认为是一种语言:信心:1