(firebase-admin)错误:错误:客户端离线，但它不是?

Question

import * as admin from "firebase-admin";
import DataModel from "../types/firebase";
export class FirebaseManager {
db = admin.database();
constructor() {
this.db = admin.database();
if (this.db === undefined) {
throw "cannot find database";
}
let data = this.db
.ref(`/`)
.get()
.then((snapshot) => {
if (!snapshot.exists()) {
throw "no database found :(";
} else {
let data = snapshot.val();
try {
let castedData = data as DataModel;
console.log("Database successfully initialised!");
} catch {
throw "Data could not be casted properly during initialisation";
}
}
});
}
}

嗨，我一直在一个不和谐的机器人，需要firebase作为后端工作。然而，当我初始化这个类时，调用。get()函数说Error: Error: Client is offline，但我一直在网上，有人知道为什么吗?此处以"firebase-admin": "^9.11.1"版本为例进行说明。如果你想看到所有的代码，https://github.com/MaxiGames/MaxiGames.js/tree/firebase在这里。

Answer 1

哎呀，问题是我们需要遵循这里的https://firebase.google.com/docs/admin/setup教程并设置一个环境变量，然后使用admin.credential.applicationDefault()作为我们输入到initialiseApp函数中的对象的凭据参数。因此，最后的代码应该是admin.initializeApp({credential:admin.credential.applicationDefault(), databaseURL:"https://{your-project}-default-rtdb.firebaseio.com"});