如何通过邮递员将图像上传到AWS S3

function uploadPinMedia(req, res, next) { console.log(req.file); var s3 = new AWS.S3({ params: { Bucket: 'mapery-v2' } }) AWS.config.update({ accessKeyId: 'xxxxxxxxxxxxxxxxxxxx', secretAccessKey: 'xxxxxxxxx+xxxxxxxxxxxxxxxxxxxxx/xxxxxxxx', }); var file = req.file; s3.upload({ ACL: 'public-read', Body: fs.createReadStream(req.file), Key: 'upload-v2', }, (err, media_res) => { console.log(err, media_res) }); } 

我试图通过邮递员上传图像到S3斗，但它给我一个像TypeError: path must be string or buffer错误TypeError: path must be string or buffer 。 如何解决这个问题？