本指南提供了使用 Go 包 mime/multipart 和 http 发送多部分表单的解决方案。
考虑以下 HTML标记：
<html> <head><title>Multipart Test</title></head> <body> <form action="/multipart" enctype="multipart/form-data" method="POST"> <label for="file"> Please select a File </label> <input>
对于 Go 实现：
import (
"bytes"
"io"
"mime/multipart"
"net/http"
"os"
)
// Upload file to google code
func Upload(tarball string) (err os.Error) {
// Create buffer
buf := new(bytes.Buffer) // caveat IMO dont use this for large files, \
// create a tmpfile and assemble your multipart from there (not tested)
w := multipart.NewWriter(buf)
// Create a form field writer for field label
label, err := w.CreateFormField("label")
if err != nil {
return err
}
// Write label field
label.Write([]byte("label here"))
// Create a form field writer for field summary
summary, err := w.CreateFormField("summary")
if err != nil {
return err
}
// Write summary field
summary.Write([]byte("summary here"))
// Create file field
fw, err := w.CreateFormFile("upload", tarball)
if err != nil {
return err
}
fd, err := os.Open(tarball)
if err != nil {
return err
}
defer fd.Close()
// Write file field from file to upload
_, err = io.Copy(fw, fd)
if err != nil {
return err
}
// Important if you do not close the multipart writer you will not have a
// terminating boundry
w.Close()
req, err := http.NewRequest("POST", repoUrl, buf)
if err != nil {
return err
}
req.Header.Set("Content-Type", w.FormDataContentType())
req.SetBasicAuth("[email protected]", "password")
res, err := client.Do(req)
if err != nil {
return err
}
io.Copy(os.Stderr, res.Body) // Replace this with Status.Code check
return err
}以上是如何使用 Go 的 `mime/multipart` 和 `net/http` 包发送带有文件的多部分表单？的详细内容。更多信息请关注PHP中文网其他相关文章！
