.net 调用API接口全（get，post）

包含了get和post各种参数形式及方法， public static U Post<U, T>(string url, T model, NameValueCollection headers = null) { return HttpClientHelper.Post<U, T>(url, model, headers); } public static U Get<U, T>(string url, T model, NameValueCollection headers = null) { return HttpClientHelper.Get<U, T>(url, model, headers); }