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2.0 KiB
2.0 KiB
| title | menu | ||||
|---|---|---|---|---|---|
| Streaming File Upload |
|
- Streaming multipart/form-data file upload
- Multiple form fields and files
Server
server.go
package main
import (
"io/ioutil"
"github.com/labstack/echo"
mw "github.com/labstack/echo/middleware"
"io"
"net/http"
"os"
)
func upload(c *echo.Context) error {
mr, err := c.Request().MultipartReader()
if err != nil {
return err
}
// Read form field `name`
part, err := mr.NextPart()
if err != nil {
return err
}
defer part.Close()
b, err := ioutil.ReadAll(part)
if err != nil {
return err
}
name := string(b)
// Read form field `email`
part, err = mr.NextPart()
if err != nil {
return err
}
defer part.Close()
b, err = ioutil.ReadAll(part)
if err != nil {
return err
}
email := string(b)
// Read files
i := 0
for {
part, err := mr.NextPart()
if err != nil {
if err == io.EOF {
break
}
return err
}
defer part.Close()
file, err := os.Create(part.FileName())
if err != nil {
return err
}
defer file.Close()
if _, err := io.Copy(file, part); err != nil {
return err
}
i++
}
return c.String(http.StatusOK, "Thank You! %s <%s>, %d files uploaded successfully.",
name, email, i)
}
func main() {
e := echo.New()
e.Use(mw.Logger())
e.Use(mw.Recover())
e.Static("/", "public")
e.Post("/upload", upload)
e.Run(":1323")
}
Client
index.html
<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>File Upload</title>
</head>
<body>
<h1>Upload Files</h1>
<form action="/upload" method="post" enctype="multipart/form-data">
Name: <input type="text" name="name"><br>
Email: <input type="email" name="email"><br>
Files: <input type="file" name="files" multiple><br><br>
<input type="submit" value="Submit">
</form>
</body>
</html>