我想上传到 aws s3 存储桶，但我的代码显示此错误

Question

我正在尝试使用此代码上传到 aws s3 存储桶，但代码中所需的文件显示未定义，有人可以帮忙吗？

 app.post("/news_feed", async (req, res, next) => {
            const ID = "...";
            const SECRET = "...";
            const BUCKET_NAME = "iconpathbucket";

          const s3bucket = new AWS.S3({
               acessKeyId: ID,
               secretAcessKey: SECRET,
               Bucket: BUCKET_NAME,
          });

               var busboy = new Busboy({ headers: req.headers });

               busboy.on("finish", () => {
               console.log("upload finished");

              const file = req.body.image;
              console.log(file);

            const params = {
                 Bucket: BUCKET_NAME,
                 Key: file.name,
                 Body: file.data,
              };
              
            if (req.session.user_id) {
                s3bucket.upload(params, (err, data) => {
                if (err) {
                     console.log(err);
                } else {
                     console.log("This is the uploaded image", data);
                }
              });
            }
          });
        });

Answer 1

您需要使用multer。它将处理请求并将文件/图像上传到 S3。

示例代码：

var multer  = require('multer')
var upload = multer({ dest: './public/data/uploads/' })
app.post('/news-feeds', upload.single('uploaded_file'), function (req, res) {
   // req.file is the name of your file in the form, here 'uploaded_file'
   // req.body will hold the text fields, if there were any 
   console.log(req.file, req.body)
});