Single file

References issue #774 and detail example code.

file.Filename SHOULD NOT be trusted. See Content-Disposition on MDN and #1693

The filename is always optional and must not be used blindly by the application: path information should be stripped, and conversion to the server file system rules should be done.

func main() {
  router := gin.Default()
  // Set a lower memory limit for multipart forms (default is 32 MiB)
  router.MaxMultipartMemory = 8 << 20  // 8 MiB
  router.POST("/upload", func(c *gin.Context) {
    // single file
    file, _ := c.FormFile("file")
    log.Println(file.Filename)

    // Upload the file to specific dst.
    c.SaveUploadedFile(file, "./files/" + file.Filename)

    c.String(http.StatusOK, fmt.Sprintf("'%s' uploaded!", file.Filename))
  })
  router.Run(":8080")
}

How to curl:

curl -X POST http://localhost:8080/upload \
  -F "file=@/Users/appleboy/test.zip" \
  -H "Content-Type: multipart/form-data"