如何在谷歌驱动器上上传文本文件？

Question

如何使用 CloudFunctions 在 Google 驱动器上上传文本文件？

文件已在本地文件夹中创建，但不知道如何在元数据正文中传递它。

我遵循以下方法：

第 1 步：写入文件

// Write file
fs.writeFileSync("sample.txt", "Hello content!");

第 2 步：准备元数据

    const metadata = {
      name: "sample.txt",
      parents: [parentFolder],
      mimeType: "text/plain",
      uploadType: "media",
    };

第 3 步：调用 Google Drive API 上传文件

    axios({
      method: "POST",
      url: "https://www.googleapis.com/drive/v3/files?supportsAllDrives=true",
      headers: {
        Authorization: `Bearer ${token}`,
        Accept: "application/json",
        "Content-Type": "application/json",
      },
      data: metadata,
    })
      .then((res) => {
        response.status(200).send(res.data);
      })
      .catch((err) => {
        response.status(500).send(err.message);
      });

所以整个函数代码是：

exports.onCreateFile = functions.https.onRequest((request, response) => {
  // <-- Some validation -->
    const parentFolder = request.query.parentFolder;
    if (!parentFolder) {
      response.status(400).send("Parent folder not found");
      return;
    }

    // Write file
    fs.writeFileSync("vault.txt", "Hello content!");

    const metadata = {
      name: "vault.txt",
      parents: [parentFolder],
      mimeType: "text/plain",
      uploadType: "media",
    };

    axios({
      method: "POST",
      url: "https://www.googleapis.com/drive/v3/files?supportsAllDrives=true",
      headers: {
        Authorization: `Bearer ${token}`,
        Accept: "application/json",
        "Content-Type": "application/json",
      },
      data: metadata,
    })
      .then((res) => {
        // console.log(res.data);
        response.status(200).send(res.data);
      })
      .catch((err) => {
        // console.log(err);
        response.status(500).send(err.message);
      });
});

基本上移动应用会通过传递accessToken和parentFolderId来调用CloudFunction，而cloudFunction会在一些业务逻辑之后上传文件。

Answer 1

最后通过以下方法解决了：

fs.writeFileSync("/tmp/sample.txt", "Hello Temp content!");

    const metadata = {
      name: "sample.txt",
      mimeType: "text/plain",
      parents: [parentFolder],
    };

    const formData = new FormData();
    formData.append("metadata", JSON.stringify(metadata), {
      contentType: "application/json",
    });
    formData.append("file", fs.createReadStream("/tmp/sample.txt"));

    axios({
      method: "POST",
      url: "https://www.googleapis.com/upload/drive/v3/files?uploadType=multipart&supportsAllDrives=true",
      headers: {
        Authorization: `Bearer ${token}`,
        "Content-Type": `multipart/related; boundary=${formData.getBoundary()}`,
      },
      data: formData,
    })
      .then((res) => {
        response.status(200).send(res.data);
      })
      .catch((err) => {
        response.status(500).send(err);
      });

这个Link 帮助解决了这个问题。

_{代表提问者发帖}

Answer 2

您不能将文件作为元数据传递。相反，您可以将其作为表单数据传递，如下所示：

    const metadata = { name: "sample.txt", mimeType: "text/plain", parents: ["root"] };
    const fileContent = "Hello content!";
    const fileBlob = new Blob([fileContent], {type: "text/plain"});
    const form = new FormData();
    form.append("metadata", JSON.stringify(metadata), { type: "application/json" }));
    form.append("file", fileBlob);
    fetch("https://www.googleapis.com/upload/drive/v3/files?uploadType=multipart&supportsAllDrives=true", {
      method: "POST",
      headers: new Headers({ Authorization: `Bearer ${token}` }),
      body: form,
    });