如何解决从 firebase 存储下载图像并使用 node.js 云函数添加到 jszip
几天来,我一直在为此尝试各种方法,但遇到了困难。我有一些图像存储在 firebase 存储中,我想将它们添加到一个 zip 文件中,该文件通过电子邮件发送给其他一些表单。我已经尝试了很多次迭代,但是当 jpeg 文件被添加到输出的 zip 时,它无法被任何应用程序打开。
这是我的最新版本:
exports.sendEmailPacket = functions.https.onRequest(async (request,response) => {
const userId = request.query.userId;
const image = await admin
.storage()
.bucket()
.file(`images/${userId}`)
.download();
const zipped = new JSZip();
zipped.file('my-image.jpg',image,{ binary: true });
const content = await zipped.generateAsync({ type: 'nodebuffer' });
// this gets picked up by another cloud function that delivers the email
await admin.firestore()
.collection("emails")
.doc(userId)
.set({
to: 'myemail@gmail.com',message: {
attachments: [
{
filename: 'test.mctesty.zip',content: Buffer.from(content)
}
]
}
});
});
解决方法
经过更多研究后能够弄清楚这一点:
exports.sendEmailPacket = functions.https.onRequest(async (request,response) => {
const userId = request.query.userId;
const image = await admin
.storage()
.bucket()
.file(`images/${userId}`)
.get(); // get instead of download
const zipped = new JSZip();
zipped.file('my-image.jpg',image[0].createReadStream(),{ binary: true }); // from the 'File' type,call .createReadStream()
const content = await zipped.generateAsync({ type: 'nodebuffer' });
// this gets picked up by another cloud function that delivers the email
await admin.firestore()
.collection("emails")
.doc(userId)
.set({
to: 'myemail@gmail.com',message: {
attachments: [
{
filename: 'test.mctesty.zip',content: Buffer.from(content)
}
]
}
});
});
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