从邮递员获取http发布请求中的参数[关闭]

Question

I have a Go server but seems I can't get a list of POST (form) parameters in my server from the POST request

I send the request from postman when the option I selected in Body tab is form-data and the request looks like this:

POST /todo/323/item HTTP/1.1
Host: localhost:8080
Cache-Control: no-cache
Postman-Token: ef4b5606-3079-fb02-824f-f58ae89ee6f3
Content-Type: multipart/form-data; boundary=----WebKitFormBoundary7MA4YWxkTrZu0gW

------WebKitFormBoundary7MA4YWxkTrZu0gW
Content-Disposition: form-data; name="aaa"

skhdfb
------WebKitFormBoundary7MA4YWxkTrZu0gW
Content-Disposition: form-data; name="test"

1213
------WebKitFormBoundary7MA4YWxkTrZu0gW--

I get null but when the option is x-www-form-urlencoded it works fine. What should I do?

this is how I try to get the value:

fmt.Fprintln(w, req.FormValue("aaa"))

thanks in advance for your help

Answer 1

When it's multipart you either have to do:

req.ParseMultipartForm(0)
fmt.Println(req.FormValue("aaa"))

or if you don't want to load the whole thing into memory, you could do:

form, err := req.MultipartReader()
for {
    part, err := form.NextPart()
    if err == io.EOF {
        break
    }
    if part.FormName() == "aaa" {
        buf := new(bytes.Buffer)
        buf.ReadFrom(part)
        fmt.Println(buf.String())
    } 
}