Google App Engine - 节点：找不到模块＆＃39; firebase-admin＆＃39;

时间：2017-02-11 13:34:59

标签： node.js google-app-engine firebase firebase-admin

首次在此部署GAE应用时，我尝试按照本教程进行操作：https://firebase.googleblog.com/2016/08/sending-notifications-between-android.html（请参阅节点代码部分）。

我跑了

npm install firebase-admin --save
npm install request --save

在我的机器上，package.json就在这里，但是当我使用gcloud app deploy时，我在浏览器上打开应用程序时会收到这些日志：

2017-02-10 09:35:02 default[20170210t103151]  module.js:471
2017-02-10 09:35:02 default[20170210t103151]      throw err;
2017-02-10 09:35:02 default[20170210t103151]      ^
2017-02-10 09:35:02 default[20170210t103151]
2017-02-10 09:35:02 default[20170210t103151]  Error: Cannot find module 'firebase-admin'
2017-02-10 09:35:02 default[20170210t103151]      at Function.Module._resolveFilename (module.js:469:15)
2017-02-10 09:35:02 default[20170210t103151]      at Function.Module._load (module.js:417:25)
2017-02-10 09:35:02 default[20170210t103151]      at Module.require (module.js:497:17)
2017-02-10 09:35:02 default[20170210t103151]      at require (internal/module.js:20:19)
2017-02-10 09:35:02 default[20170210t103151]      at Object.<anonymous> (/app/server.js:1:78)
2017-02-10 09:35:02 default[20170210t103151]      at Module._compile (module.js:570:32)
2017-02-10 09:35:02 default[20170210t103151]      at Object.Module._extensions..js (module.js:579:10)
2017-02-10 09:35:02 default[20170210t103151]      at Module.load (module.js:487:32)
2017-02-10 09:35:02 default[20170210t103151]      at tryModuleLoad (module.js:446:12)
2017-02-10 09:35:02 default[20170210t103151]      at Function.Module._load (module.js:438:3)
2017-02-10 09:35:07 default[20170210t103151]  module.js:471
2017-02-10 09:35:07 default[20170210t103151]      throw err;
2017-02-10 09:35:07 default[20170210t103151]      ^
2017-02-10 09:35:07 default[20170210t103151]
2017-02-10 09:35:07 default[20170210t103151]  Error: Cannot find module 'firebase-admin'
2017-02-10 09:35:07 default[20170210t103151]      at Function.Module._resolveFilename (module.js:469:15)
2017-02-10 09:35:07 default[20170210t103151]      at Function.Module._load (module.js:417:25)
2017-02-10 09:35:07 default[20170210t103151]      at Module.require (module.js:497:17)
2017-02-10 09:35:07 default[20170210t103151]      at require (internal/module.js:20:19)
2017-02-10 09:35:07 default[20170210t103151]      at Object.<anonymous> (/app/server.js:1:78)
2017-02-10 09:35:07 default[20170210t103151]      at Module._compile (module.js:570:32)
2017-02-10 09:35:07 default[20170210t103151]      at Object.Module._extensions..js (module.js:579:10)
2017-02-10 09:35:07 default[20170210t103151]      at Module.load (module.js:487:32)
2017-02-10 09:35:07 default[20170210t103151]      at tryModuleLoad (module.js:446:12)
2017-02-10 09:35:07 default[20170210t103151]      at Function.Module._load (module.js:438:3)
2017-02-10 09:43:58 default[20170210t104151]  module.js:471
2017-02-10 09:43:58 default[20170210t104151]      throw err;
2017-02-10 09:43:58 default[20170210t104151]      ^
2017-02-10 09:43:58 default[20170210t104151]
2017-02-10 09:43:58 default[20170210t104151]  Error: Cannot find module 'serviceAccountKey.json'
2017-02-10 09:43:58 default[20170210t104151]      at Function.Module._resolveFilename (module.js:469:15)
2017-02-10 09:43:58 default[20170210t104151]      at Function.Module._load (module.js:417:25)
2017-02-10 09:43:58 default[20170210t104151]      at Module.require (module.js:497:17)
2017-02-10 09:43:58 default[20170210t104151]      at require (internal/module.js:20:19)
2017-02-10 09:43:58 default[20170210t104151]      at Object.<anonymous> (/app/server.js:7:22)
2017-02-10 09:43:58 default[20170210t104151]      at Module._compile (module.js:570:32)
2017-02-10 09:43:58 default[20170210t104151]      at Object.Module._extensions..js (module.js:579:10)
2017-02-10 09:43:58 default[20170210t104151]      at Module.load (module.js:487:32)
2017-02-10 09:43:58 default[20170210t104151]      at tryModuleLoad (module.js:446:12)
2017-02-10 09:43:58 default[20170210t104151]      at Function.Module._load (module.js:438:3)
2017-02-10 09:44:10 default[20170210t104151]  module.js:471
2017-02-10 09:44:10 default[20170210t104151]      throw err;
2017-02-10 09:44:10 default[20170210t104151]      ^
2017-02-10 09:44:10 default[20170210t104151]
2017-02-10 09:44:10 default[20170210t104151]  Error: Cannot find module 'serviceAccountKey.json'
2017-02-10 09:44:10 default[20170210t104151]      at Function.Module._resolveFilename (module.js:469:15)
2017-02-10 09:44:10 default[20170210t104151]      at Function.Module._load (module.js:417:25)
2017-02-10 09:44:10 default[20170210t104151]      at Module.require (module.js:497:17)
2017-02-10 09:44:10 default[20170210t104151]      at require (internal/module.js:20:19)
2017-02-10 09:44:10 default[20170210t104151]      at Object.<anonymous> (/app/server.js:7:22)
2017-02-10 09:44:10 default[20170210t104151]      at Module._compile (module.js:570:32)
2017-02-10 09:44:10 default[20170210t104151]      at Object.Module._extensions..js (module.js:579:10)
2017-02-10 09:44:10 default[20170210t104151]      at Module.load (module.js:487:32)
2017-02-10 09:44:10 default[20170210t104151]      at tryModuleLoad (module.js:446:12)
2017-02-10 09:44:10 default[20170210t104151]      at Function.Module._load (module.js:438:3)
2017-02-10 16:20:02 default[20170210t124920]  Error: Credential implementation provided to initializeApp() via the "credential" property failed to fetch a valid Google OAuth2 access token with the following error: "connect ETIMEDOUT 74.125.202.84:443".
2017-02-10 16:20:02 default[20170210t124920]      at /app/node_modules/firebase-admin/lib/firebase-app.js:74:23
2017-02-10 16:20:02 default[20170210t124920]      at process._tickCallback (internal/process/next_tick.js:103:7)

我该如何解决这个问题？

3 个答案:

答案 0 :(得分：27)

这些问题似乎是由于对require()路径工作方式的误解造成的。您不能使用绝对路径，因为在部署应用程序并导入失败时，require("/Users/username/somepath")之类的内容显然不会存在于远程计算机上。使用require("serviceAccountKey.json")将查找相对于app目录的 node_modules / serviceAccountKey.json 。

如果要从应用程序的根目录加载 serviceAccountKey.json ，可以使用require("./serviceAccountKey.json")。如果它位于根目录下名为 foo 的子目录中，则您使用require("./foo/serviceAccountKey.json")。这也适用于加载模块，例如firebase-admin。

NodeJS Modules documentation更详细地解释了require()机制。

答案 1 :(得分：3)

我可以像这样对这个过程做一个解决方法： （在app.js代码中传递serviceAccountkeyFile.json参数）：

let defaultAppConfig = {
    credential: admin.credential.cert({
        type: "service_account",
        project_id: "txxxxxxxxxx",
        private_key_id: "xxxxxxxxxxxxxxxxxxxxxxxxxx",
        private_key: "-----BEGIN PRIVATE KEY----------END PRIVATE KEY-----\n",
        client_email: "firebaxxxxxxx@xxxxxxx.gserviceaccount.com",
        client_id: "11111111111111111",
        auth_uri: "https://accounts.google.com/o/oauth2/auth",
        token_uri: "https://accounts.google.com/o/oauth2/token",
        auth_provider_x509_cert_url: "https://www.googleapis.com/oauth2/v1/certs",
        client_x509_cert_url: "https://www.googleapis.com/robot/v1/metadata/x509/jjjjjj.gserviceaccount.com"
    }),
    databaseURL: 'https://projectxxx.firebaseio.com/'
}

defaultApp = admin.initializeApp(defaultAppConfig);

答案 2 :(得分：0)

我在运行gcloud app deploy

时遇到了类似的问题 
Error: Cannot find module 'webpack-dev-server'
at Function.Module._resolveFilename (module.js:469:15)

我解决了在devDependencies中将给定依赖项（wepack-dev-server）从dependencies移动到package.json的问题。

如果其他人遇到同样的问题，我建议你在package.json查看你的依赖关系。 dependencies需要运行devDependencies才能开发，例如：单元测试，Coffeescript到Javascript的转换，缩小，

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