上载带有POST请求golang的文件 [英] Upload a file with POST request golang
问题描述
我是golang的新手,我正在尝试编写一个函数,该函数将带有POST请求的文件上传到电报中,以供我编写的机器人使用.
我已经尝试过使用此代码,但是我从电报中收到的错误是
Bad Request: there is no photo in the request
.
我已经在网上搜索了如何执行此操作,但是发现的任何问题都无法帮助我解决问题.
func SendPostRequest (url string, filename string) []byte {
file, err := os.Open(filename)
if err != nil {
log.Fatal(err)
}
defer file.Close()
response, err := http.Post(url, "binary/octet-stream", file)
if err != nil {
log.Fatal(err)
}
defer response.Body.Close()
content, err := ioutil.ReadAll(response.Body)
if err != nil {
log.Fatal(err)
}
return content
}
我从中调用SendPostRequest的函数是
func (e Engine) SendPhoto (filename string, chatId int64) APIResponse {
var url = fmt.Sprintf("%ssendPhoto?chat_id=%d", e.baseUrl, chatId)
var content []byte = SendPostRequest(url, filename)
var response APIResponse
json.Unmarshal(content, &response)
return response
}
我在代码中使用的Telegram机器人api的链接为 https://core.telegram.org /bots/api
并且api方法是 https://core.telegram.org/bots/api# sendphoto
经过一番挖掘,我发现了这一点
func SendPostRequest (url string, filename string, filetype string) []byte {
file, err := os.Open(filename)
if err != nil {
log.Fatal(err)
}
defer file.Close()
body := &bytes.Buffer{}
writer := multipart.NewWriter(body)
part, err := writer.CreateFormFile(filetype, filepath.Base(file.Name()))
if err != nil {
log.Fatal(err)
}
io.Copy(part, file)
writer.Close()
request, err := http.NewRequest("POST", url, body)
if err != nil {
log.Fatal(err)
}
request.Header.Add("Content-Type", writer.FormDataContentType())
client := &http.Client{}
response, err := client.Do(request)
if err != nil {
log.Fatal(err)
}
defer response.Body.Close()
content, err := ioutil.ReadAll(response.Body)
if err != nil {
log.Fatal(err)
}
return content
}
I'm new to golang and I'm trying to write a function that uploads a file with a post request to telegram for a bot I'm writing.
I've tried with this code but the error I'm getting from telegram is
Bad Request: there is no photo in the request
.
I've searched on the net for how to do that, but none of what I found helped me through the problem.
func SendPostRequest (url string, filename string) []byte {
file, err := os.Open(filename)
if err != nil {
log.Fatal(err)
}
defer file.Close()
response, err := http.Post(url, "binary/octet-stream", file)
if err != nil {
log.Fatal(err)
}
defer response.Body.Close()
content, err := ioutil.ReadAll(response.Body)
if err != nil {
log.Fatal(err)
}
return content
}
The function I'm calling the SendPostRequest from is
func (e Engine) SendPhoto (filename string, chatId int64) APIResponse {
var url = fmt.Sprintf("%ssendPhoto?chat_id=%d", e.baseUrl, chatId)
var content []byte = SendPostRequest(url, filename)
var response APIResponse
json.Unmarshal(content, &response)
return response
}
EDIT: The link to the Telegram bot api I'm using in the code is https://core.telegram.org/bots/api
And the api method is https://core.telegram.org/bots/api#sendphoto
After some digging I figured it out with this
func SendPostRequest (url string, filename string, filetype string) []byte {
file, err := os.Open(filename)
if err != nil {
log.Fatal(err)
}
defer file.Close()
body := &bytes.Buffer{}
writer := multipart.NewWriter(body)
part, err := writer.CreateFormFile(filetype, filepath.Base(file.Name()))
if err != nil {
log.Fatal(err)
}
io.Copy(part, file)
writer.Close()
request, err := http.NewRequest("POST", url, body)
if err != nil {
log.Fatal(err)
}
request.Header.Add("Content-Type", writer.FormDataContentType())
client := &http.Client{}
response, err := client.Do(request)
if err != nil {
log.Fatal(err)
}
defer response.Body.Close()
content, err := ioutil.ReadAll(response.Body)
if err != nil {
log.Fatal(err)
}
return content
}
这篇关于上载带有POST请求golang的文件的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!