使用 Expo 和 Firebase 解决 Google Drive API 集成挑战

在 Expo 和 Firebase 项目中集成 Google Drive API 以进行数据备份

该解决方案使用模块化 JavaScript 方法将 Google Drive API 集成到 Expo 应用程序中，并结合 Firebase 身份验证来实现安全访问。

// Import necessary modules
import { GoogleSignin } from '@react-native-google-signin/google-signin';
import { gapi } from 'gapi-script';
import * as FileSystem from 'expo-file-system';
import firebase from 'firebase/app';
import 'firebase/auth';
// Initialize Firebase
firebase.initializeApp({
  apiKey: "YOUR_API_KEY",
  authDomain: "YOUR_AUTH_DOMAIN",
  projectId: "YOUR_PROJECT_ID",
});
// Configure Google Sign-In
GoogleSignin.configure({
  webClientId: "YOUR_WEB_CLIENT_ID",
});
// Authenticate User with Firebase
async function authenticateUser() {
  try {
    const userInfo = await GoogleSignin.signIn();
    const credential = firebase.auth.GoogleAuthProvider.credential(userInfo.idToken);
    await firebase.auth().signInWithCredential(credential);
    console.log("User authenticated!");
  } catch (error) {
    console.error("Authentication failed:", error);
  }
}
// Upload a File to Google Drive
async function uploadFileToDrive(fileUri) {
  try {
    const accessToken = gapi.auth.getToken().access_token;
    const fileContent = await FileSystem.readAsStringAsync(fileUri, { encoding: FileSystem.EncodingType.Base64 });
    const metadata = {
      name: "BackupFile.json",
      mimeType: "application/json",
    };
    const formData = new FormData();
    formData.append("metadata", new Blob([JSON.stringify(metadata)], { type: "application/json" }));
    formData.append("file", new Blob([fileContent], { type: "application/json" }));
    const response = await fetch("https://www.googleapis.com/upload/drive/v3/files?uploadType=multipart", {
      method: "POST",
      headers: { Authorization: `Bearer ${accessToken}` },
      body: formData,
    });
    if (!response.ok) throw new Error("Upload failed!");
    console.log("File uploaded successfully!");
  } catch (error) {
    console.error("Error uploading file:", error);
  }
}
// Example Usage
authenticateUser().then(() => {
  uploadFileToDrive(FileSystem.documentDirectory + "backup.json");
});

在 Node.js 后端测试 Google Drive 集成

该后端解决方案使用 Node.js 和“googleapis”库与 Google Drive API 交互，确保文件上传的安全。

// Import Google API and required modules
const { google } = require('googleapis');
const fs = require('fs');
// Configure OAuth2 Client
const oAuth2Client = new google.auth.OAuth2(
  "YOUR_CLIENT_ID",
  "YOUR_CLIENT_SECRET",
  "YOUR_REDIRECT_URI"
);
oAuth2Client.setCredentials({
  refresh_token: "YOUR_REFRESH_TOKEN",
});
// Upload a File to Google Drive
async function uploadToDrive() {
  try {
    const drive = google.drive({ version: "v3", auth: oAuth2Client });
    const fileMetadata = { name: "BackupFile.json" };
    const media = {
      mimeType: "application/json",
      body: fs.createReadStream("./backup.json"),
    };
    const response = await drive.files.create({
      resource: fileMetadata,
      media: media,
      fields: "id",
    });
    console.log("File ID:", response.data.id);
  } catch (error) {
    console.error("Error uploading to Drive:", error);
  }
}
// Example Usage
uploadToDrive();

1. 有关将 Google Drive API 与 JavaScript 集成的文档： Google 云端硬盘 API 文档
2. Google 登录的 Firebase 身份验证指南： Firebase Google 登录指南
3. 将 FileSystem 与 Expo 结合使用进行本地文件处理： Expo 文件系统文档
4. 使用 Google Drive API 实现 Node.js： Google API Node.js 客户端库
5. Google Drive API 错误的常见故障排除提示： Stack Overflow：Google Drive API