import fs from 'fs';
export default async function handler(req, res) {
const {
method,
body,
} = req
try {
switch (method) {
case 'GET': {
// read
// This line opens the file as a readable stream
const readStream = fs.createReadStream('/tmp/text.txt')
// This will wait until we know the readable stream is actually valid before piping
readStream.on('open', function () {
// This just pipes the read stream to the response object (which goes to the client)
readStream.pipe(res)
})
// This catches any errors that happen while creating the readable stream (usually invalid names)
readStream.on('error', function (err) {
res.end(err)
})
return
}
case 'POST':
// write
fs.writeFileSync('./test.txt', JSON.stringify(body))
break
default:
res.setHeader('Allow', ['GET', 'POST'])
res.status(405).end(`Method ${method} Not Allowed`)
}
// send result
return res.status(200).json({ message: 'Success' })
} catch (error) {
return res.status(500).json(error)
}
}
}
1条答案
按热度按时间lnlaulya1#
Vercel允许在
/tmp
目录中创建文件。但是,此目录有一些限制。https://github.com/vercel/vercel/discussions/5320/api
函数的一个例子是写和读文件:参见:https://vercel.com/support/articles/how-can-i-use-files-in-serverless-functions