Golang에서 멀티파트 파일 업로드를 처리하는 방법은 무엇입니까?

import (
    "fmt"
    "log"

    "github.com/labstack/echo/v4"
)

func upload(c echo.Context) error {
    // Read the form data
    form, err := c.MultipartForm()
    if err != nil {
        return err
    }

    // Retrieve the uploaded file
    file, err := form.File("file")
    if err != nil {
        return err
    }
    
    // Do something with the file
    
    return nil
}

<form action="/upload" method="POST" enctype="multipart/form-data">
   <input type="file" name="file">
   <button type="submit">Upload</button>
</form>

// Install echo/v4 and github.com/go-spew/spew

// main.go
package main

import (
    "fmt"
    "github.com/labstack/echo/v4"
    "github.com/labstack/echo/v4/middleware"
    "github.com/go-spew/spew"
    "net/http"
)

func main() {
    e := echo.New()
    e.Use(middleware.Logger())

    e.POST("/upload", upload)

    e.Logger.Fatal(e.Start(":8080"))
}

func upload(c echo.Context) error {
    // Read the form data
    form, err := c.MultipartForm()
    if err != nil {
        return err
    }

    // Retrieve the uploaded file
    file, err := form.File("file")
    if err != nil {
        return err
    }
    
    // Print the file details
    spew.Dump(file)
    
    return c.JSON(http.StatusOK, map[string]interface{}{
        "message": "File uploaded successfully",
    })
}