Ebay API 中的 Bad Request 错误设置 header

Question

我想请教如何解决我的 httpclient 请求的 header 中的问题。这是 ebay restful api 正在创建履行装运。我可以在 Postman 中创建，但是当我在 VS 中尝试它时，它无法处理错误错误的请求。下面是使用 postman 的屏幕截图。

下面的代码在 ASP.NET

private HttpClient CreateHttpClient()
{
    var client = new HttpClient();
    ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;

    string baseAddress = WebApiBaseAddress;
    client.Timeout = new TimeSpan(0, 5, 59);
    client.BaseAddress = new Uri(baseAddress);
    client.DefaultRequestHeaders.Accept.Clear();
    client.DefaultRequestHeaders.Add("Authorization", string.Format("Bearer {0}", _cred.eBayToken));
    client.DefaultRequestHeaders.TryAddWithoutValidation("Content-Type", "application/json; charset=utf-8");
    return client;
}

public HttpResponseMessage PostHttpResponse(string requestUri, object data)
{
    var stringPayload = JsonConvert.SerializeObject(data);
    var httpContent = new StringContent(stringPayload, Encoding.UTF8, "application/json");
    httpContent.Headers.ContentType = new MediaTypeHeaderValue("application/json");
    httpContent.Headers.Add("Content-Language", "en-US");


    using (var client = CreateHttpClient())
    {
        try
        {
            HttpResponseMessage response = client.PostAsJsonAsync(requestUri, httpContent).Result;
            if (response.IsSuccessStatusCode)
            {
                return response;
            }
            else
            {
                GetErrorsResponse(response);
                throw new HttpRequestException(string.Format("There was an exception trying to post a request. response: {0}", response.ReasonPhrase));
            }
        }
        catch (HttpRequestException ex)
        {
            throw ex;
            //return null;
        }
    }
}

Answer 1

我能够通过不将请求转换为 json 而是作为 object 发送来解决问题。尽管提供的错误非常普遍，无法确定主要问题。在询问了在 ebay 集成方面有经验的人后，主要问题是在 headers 中提供所有需要的东西。

 public HttpResponseMessage PostHttpResponse(string requestUri, object data)
{
    using (var client = CreateHttpClient())
    {
        try
        {
            HttpResponseMessage response = client.PostAsJsonAsync(requestUri, data).Result;
            if (response.IsSuccessStatusCode)
            {
                return response;
            }
            else
            {
                GetErrorsResponse(response);
                throw new HttpRequestException(string.Format("There was an exception trying to post a request. response: {0}", response.ReasonPhrase));
            }
        }
        catch (HttpRequestException ex)
        {
            throw ex;
            //return null;
        }
    }
}

并且在httpclient中需要添加header.

private HttpClient CreateHttpClient()
        {
            var client = new HttpClient();
            ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls12;

            string baseAddress = WebApiBaseAddress;
            if (string.IsNullOrEmpty(baseAddress))
            {
                throw new HttpRequestException("There is no base address specified in the configuration file.");
            }
            client.Timeout = new TimeSpan(0, 5, 59);
            client.BaseAddress = new Uri(baseAddress);
            client.DefaultRequestHeaders.Accept.Clear();
            client.DefaultRequestHeaders.Add("Authorization", string.Format("Bearer {0}", _cred.eBayToken));
            client.DefaultRequestHeaders.Add("Accept-Language", "en-US");
            client.DefaultRequestHeaders.Add("Accept-Charset", "utf-8");
            client.DefaultRequestHeaders.Add("Accept", "application/json");
            client.DefaultRequestHeaders.Add("LegacyUse", "true");
            return client;
        }

Ebay API 中的 Bad Request 错误设置 header

Bad Request error setting header in Ebay API

c#

rest

httpclient

asp.net-mvc-4

ebay-api