Google App Engine - 節點：找不到模塊'firebase-admin'

Question

首次在此部署GAE應用，我正在嘗試按照本教程進行操作： https ： //firebase.googleblog.com/2016/08/sending-notifications-between-android.html （請參閱節點代碼部分）。

我跑了

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

在我的機器上，package.json就在這里，但是當我使用gcloud app deploy ，我在瀏覽器上打開應用程序時會得到這些日志：

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)

我該如何解決 ？？

Answer 1

這些問題似乎是由於對require()路徑如何工作的誤解造成的。 您不能使用絕對路徑，因為當部署應用程序並導入失敗時，遠程計算機上顯然不存在require("/Users/username/somepath") 。 使用require("serviceAccountKey.json")將查看相對於app目錄的node_modules / serviceAccountKey.json 。

如果要從應用程序的根目錄加載serviceAccountKey.json ，可以使用require("./serviceAccountKey.json") 。 如果它位於根目錄下名為foo的子目錄中，則使用require("./foo/serviceAccountKey.json") 。 這也適用於加載模塊，例如firebase-admin 。

NodeJS模塊文檔更詳細地解釋了require()機制。

Answer 2

我可以像這樣對這個過程做一個解決方法:(在app.js代碼中傳遞serviceAccountkeyFile.json參數）：

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);

Answer 3

我在運行gcloud app deploy遇到了類似的問題

Error: Cannot find module 'webpack-dev-server'
at Function.Module._resolveFilename (module.js:469:15)

我解決了將給定依賴項（wepack-dev-server）從devDependencies到package.json dependencies問題。

如果其他人有同樣的問題，我建議你在package.json查看你的依賴項。 運行時需要dependencies ， devDependencies只用於開發，例如：單元測試，Coffeescript到Javascript的編譯，縮小，