here I want to use the latest asynchronous way of es6 to achieve, ask for your advice! As I wrote below, I can upload pictures, but I just can"t return the body data. So the result is that the picture has actually been uploaded, but the interface shows 404.

exports.uploadFile = async (ctx,next) => {
let client = new OSS({
    region: "oss-cn-qingdao",
    accessKeyId: "124214124",
    accessKeySecret: "1412414124",
    bucket: "p-144-141244"
})


let form = new formidable.IncomingForm()
    form.parse(ctx.req, function (err, fields, files) {
        client.put(fields.path, files.file.path).then(function (val) {
            // console.log(val.res)
            ctx.body = {
                res: val.res.requestUrls
            }
        }).then(function (val) {
            // console.log(val.res)
            // console.log(val.content.toString())
            ctx.body = {
                res: ""
            }
        })
    })
}