2015-06-30 21:10:35 +02:00
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## File Upload
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- Multipart/form-data file upload
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- Multiple form fields and files
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Use `req.ParseMultipartForm(16 << 20)` for manually parsing multipart form. It gives
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2015-07-02 06:22:51 +02:00
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us an option to specify the maximum memory used while parsing the request body.
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2015-06-30 20:51:08 +02:00
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`server.go`
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```go
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package main
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import (
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"io"
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"os"
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"net/http"
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"github.com/labstack/echo"
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2015-07-02 20:14:09 +02:00
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mw "github.com/labstack/echo/middleware"
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)
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func upload(c *echo.Context) error {
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req := c.Request()
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// req.ParseMultipartForm(16 << 20) // Max memory 16 MiB
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// Read form fields
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name := req.FormValue("name")
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email := req.FormValue("email")
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// Read files
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files := req.MultipartForm.File["files"]
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for _, f := range files {
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// Source file
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src, err := f.Open()
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if err != nil {
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return err
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}
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defer src.Close()
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// Destination file
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dst, err := os.Create(f.Filename)
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if err != nil {
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return err
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}
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defer dst.Close()
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if _, err = io.Copy(dst, src); err != nil {
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return err
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}
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}
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return c.String(http.StatusOK, "Thank You! %s <%s>, %d files uploaded successfully.",
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name, email, len(files))
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}
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func main() {
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e := echo.New()
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e.Use(mw.Logger())
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e.Use(mw.Recover())
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e.Static("/", "public")
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e.Post("/upload", upload)
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2015-06-30 20:51:08 +02:00
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e.Run(":1323")
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}
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```
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`index.html`
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```html
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<!doctype html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<title>File Upload</title>
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</head>
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<body>
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<h1>Upload Files</h1>
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<form action="/upload" method="post" enctype="multipart/form-data">
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Name: <input type="text" name="name"><br>
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Email: <input type="email" name="email"><br>
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Files: <input type="file" name="files" multiple><br><br>
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<input type="submit" value="Submit">
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</form>
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</body>
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</html>
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```
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2015-06-30 21:10:35 +02:00
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## [Source Code](https://github.com/labstack/echo/blob/master/recipes/file-upload)
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