Go Iris File Upload

Single File Upload

const maxSize = 8 * iris.MB

func main() {
    app := iris.Default()

    app.Post("/upload", func(ctx iris.Context) {
        // Set the request body size limit, which limits the file upload size (default 32 MiB)
        ctx.SetMaxRequestBodySize(maxSize)
        // Or
        // app.Use(iris.LimitRequestBodySize(maxSize))
        // Or
        // iris.WithPostMaxMemory(maxSize)

        // Read the file
        file, fileHeader, err:= ctx.FormFile("file")
        if err != nil {
            ctx.StopWithError(iris.StatusBadRequest, err)
            return
        }

        // Save the uploaded file to the specified directory
        dest := filepath.Join("./uploads", fileHeader.Filename)
        ctx.SaveFormFile(fileHeader, dest)

        ctx.Writef("File: %s uploaded!", fileHeader.Filename)
    })

    app.Listen(":8080")
}

Test uploading a file

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

Multiple File Upload

func main() {
    app := iris.Default()
    app.Post("/upload", func(ctx iris.Context) {
        // Read multiple files
        files, n, err := ctx.UploadFormFiles("./uploads")
        if err != nil {
            ctx.StopWithStatus(iris.StatusInternalServerError)
            return
        }

        ctx.Writef("%d files of %d total size uploaded!", len(files), n))
    })

    app.Listen(":8080", iris.WithPostMaxMemory(8 * iris.MB))
}

Test uploading multiple files

curl -X POST http://localhost:8080/upload \
  -F "upload[]=@/Users/kataras/test1.zip" \
  -F "upload[]=@/Users/kataras/test2.zip" \
  -H "Content-Type: multipart/form-data"