Url
url 增加query
https://github.com/google/go-querystring
uri.gofunc UrlAppend(uri string, obj map[string]string) string {
u1, err := url.Parse(uri)
if err != nil {
return uri
}
q := u1.Query()
for k, v := range obj {
q.Add(k, v)
}
u1.RawQuery = q.Encode()
return u1.String()
}