Golang multipart/form-data File Upload

file-upload-multipart.go

package main

import (
  "net/http"
  "os"
  "bytes"
  "path"
  "path/filepath"
  "mime/multipart"
  "io"
)

func main() {
  fileDir, _ := os.Getwd()
  fileName := "upload-file.txt"
  filePath := path.Join(fileDir, fileName)

  file, _ := os.Open(filePath)
  defer file.Close()

  body := &bytes.Buffer{}
  writer := multipart.NewWriter(body)
  part, _ := writer.CreateFormFile("file", filepath.Base(file.Name()))
  io.Copy(part, file)
  writer.Close()

  r, _ := http.NewRequest("POST", "http://example.com", body)
  r.Header.Add("Content-Type", writer.FormDataContentType())
  client := &http.Client{}
  client.Do(r)
}

Thanks!

This example is the best. Thanks!

Will this code use sendfile to achieve zero copy?

Спасибо)

Thank you soooooooooo much!!

thanks!! :)

alright!

Thank you

👍

Do you have any ideas how to send a zip file using multipart writer?

Thanks!! Much appreciated!

Thanks! it's working well.

Thanks!

Thank you <3

Thanks.

Thanks 👍

it works

it works

Thanks!