更新时间:2022-03-08 19:59:16
以下是一些示例代码。
简而言之,您需要使用 mime / multipart
包构建表单。
In short, you'll need to use the mime/multipart
package to build the form.
package sample
import (
"bytes"
"fmt"
"io"
"mime/multipart"
"net/http"
"os"
)
func Upload(url, file string) (err error) {
// Prepare a form that you will submit to that URL.
var b bytes.Buffer
w := multipart.NewWriter(&b)
// Add your image file
f, err := os.Open(file)
if err != nil {
return
}
defer f.Close()
fw, err := w.CreateFormFile("image", file)
if err != nil {
return
}
if _, err = io.Copy(fw, f); err != nil {
return
}
// Add the other fields
if fw, err = w.CreateFormField("key"); err != nil {
return
}
if _, err = fw.Write([]byte("KEY")); err != nil {
return
}
// Don't forget to close the multipart writer.
// If you don't close it, your request will be missing the terminating boundary.
w.Close()
// Now that you have a form, you can submit it to your handler.
req, err := http.NewRequest("POST", url, &b)
if err != nil {
return
}
// Don't forget to set the content type, this will contain the boundary.
req.Header.Set("Content-Type", w.FormDataContentType())
// Submit the request
client := &http.Client{}
res, err := client.Do(req)
if err != nil {
return
}
// Check the response
if res.StatusCode != http.StatusOK {
err = fmt.Errorf("bad status: %s", res.Status)
}
return
}