谷歌云抛出错误：无法在 Nodejs 中加载默认凭据

Question

我已将此服务帐户密钥（my-key.json）文件存储在我的下载文件夹（ubuntu）中，然后我将此命令运行到我的控制台中

export GOOGLE_APPLICATION_CREDENTIALS="/home/user/Downloads/my-key.json"

根据谷歌云。 现在我正在运行此代码，但它会引发错误。

const language = require('@google-cloud/language');

const quickstart = async function () {
  // Instantiates a client
  const client = new language.LanguageServiceClient();
 
  // The text to analyze
  const text = 'Hello, world!';
 
  const document = {
    content: text,
    type: 'PLAIN_TEXT',
  };
 
  // Detects the sentiment of the text
  const [result] = await client.analyzeSentiment({document: document});
  const sentiment = result.documentSentiment;
 
  console.log(`Text: ${text}`);
  console.log(`Sentiment score: ${sentiment.score}`);
  console.log(`Sentiment magnitude: ${sentiment.magnitude}`);
}


quickstart();

**ERORR** -
(node:13928) UnhandledPromiseRejectionWarning: Error: Could not load the default credentials. Browse to https://cloud.google.com/docs/authentication/getting-started for more information.
    at GoogleAuth.getApplicationDefaultAsync (/home/hardy/Documents/personal/project/node_modules/google-auth-library/build/src/auth/googleauth.js:154:19)
    at processTicksAndRejections (internal/process/task_queues.js:94:5)
    at async GoogleAuth.getClient (/home/hardy/Documents/personal/project/node_modules/google-auth-library/build/src/auth/googleauth.js:485:17)
    at async GrpcClient._getCredentials (/home/hardy/Documents/personal/project/node_modules/google-gax/build/src/grpc.js:88:24)
    at async GrpcClient.createStub (/home/hardy/Documents/personal/project/node_modules/google-gax/build/src/grpc.js:213:23)

Answer 1

如果您使用node <file-name>.js来初始化您的代码，您应该将命令更新为

GOOGLE_APPLICATION_CREDENTIALS="/home/user/Downloads/my-key.json" node <file-name>.js

这将使 GOOGLE_APPLICATION_CREDENTIALS 在您的节点环境中可用。

但是，作为长期解决方案，我建议创建一个.env文件并将GOOGLE_APPLICATION_CREDENTIALS="/home/user/Downloads/my-key.json"在该文件中。

然后按以下方式在js文件的开头使用dotenv package：

require('dotenv').config();

您也可以参考https://stackoverflow.com/a/27090755/7743705了解如何在pacakge.json中设置环境变量。

Answer 2

为了能够使用 npm 运行而无需每次都设置凭据

"scripts": {
    "start": "set GOOGLE_APPLICATION_CREDENTIALS=[PATH]/credentials.json&& nodemon server.js"
},

有关如何使用 env 的更多原因，您可以访问如何从 package.json 中设置环境变量？ 以获得更全面的答案。