golang解析POST请求(golang parse POST request)

I have a HTTP POST request with payload

indices=0%2C1%2C2

Here is my golang backend code

err := r.ParseForm()
if err != nil {
    http.Error(w, err.Error(), http.StatusInternalServerError)
    return
}
log.Println("r.PostForm", r.PostForm)
log.Println("r.Form", r.Form)

body, err := ioutil.ReadAll(r.Body)
if err != nil {
    http.Error(w, err.Error(), http.StatusInternalServerError)
    return
}
log.Println("r.Body", string(body))

values, err := url.ParseQuery(string(body))
if err != nil {
    http.Error(w, err.Error(), http.StatusInternalServerError)
    return
}
log.Println("indices from body", values.Get("indices"))

Output:

r.PostForm map[]
r.Form map[]
r.Body indices=0%2C1%2C2
indices from body 0,1,2

r.ParseForm()url.ParseQuery(string(body))