如何将Curl命令转换为.net HttpClient后调用

Question

我正在尝试计算如何将此curl片段转换为.net HttpClient作为Post请求。从下面的图像中获取服务器返回的500错误。

这是curl命令，用于ConvertKit创建webhook。

curl -X POST https://api.convertkit.com/v3/automations/hooks
 -H 'Content-Type: application/json'\
 -d '{ "api_secret": "<your_secret_api_key>",\
       "target_url": "http://example.com/incoming",\
       "event": { "name": "subscriber.subscriber_activate" } }'

参考链接：http://developers.convertkit.com/#webhooks

这是我的.net代码段：

private static async Task<HttpResponseMessage> PostConverkitCreateWebhookSubscription()
{
        var client = new HttpClient {BaseAddress = new Uri("https://api.convertkit.com ") };
        client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));

        dynamic event1 = new ExpandoObject();
        event1.name = "subscriber.subscriber_activate";
        var customEvent = JsonConvert.SerializeObject(event1);

        var keyValues = new List<KeyValuePair<string, string>>
        {
            new KeyValuePair<string, string>("api_secret", "<your_secret_api_key>"),
            new KeyValuePair<string, string>("target_url","http://example.com/incoming"),
            new KeyValuePair<string, string>("event", customEvent)
        };

        var request = new HttpRequestMessage(HttpMethod.Post, "/v3/automations/hooks")
            {
                Content = new FormUrlEncodedContent(keyValues)
            };
        return await client.SendAsync(request);
}

获取错误500，所以我可能会对他们的服务器造成严重破坏。

可能是可能事件的JSON对象......不确定..需要帮助

Answer 1

FormUrlEncodedContent对类似于查询字符串的键值对进行编码。您基本上告诉它发送URL编码的键值对，其中最后一个值是JSON编码的。所以你的请求主体看起来像这样：

api_secret=<your_secret_api_key>&target_url=http://example.com/incoming&event={"name":"subscriber.subscriber_activate"}

但是API期望整个有效负载都是JSON编码的。这个修改过的版本可以解决这个问题：

var data = new
{
    api_secret = "<your_secret_api_key>",
    target_url = "http://example.com/incoming",
    @event = new
    {
        name = "subscriber.subscriber_activate"
    }
};
var json = JsonConvert.SerializeObject(data); // json-encode everything, not just event

var client = new HttpClient { BaseAddress = new Uri("https://api.convertkit.com ") };
var content = new StringContent(json, Encoding.UTF8, "application/json");
return await client.PostAsync("/v3/automations/hooks", content);

作为旁注，event是C＃中的保留字; @event是如何将其转义为将其用作属性名称。