我想寻求帮助,如何解决我的httpclient请求标题中的问题。这是ebay restful api,用于创建配送货件。我可以在Postman中创建,但是当我在VS中尝试时,它不会出现错误错误请求。下面的屏幕截图使用 Postman 。
ASP.NET中的以下代码
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;
}
}
}
通过不将请求转换为json而是作为对象发送,我能够解决此问题。尽管提供的错误非常笼统,无法识别主要问题。在询问某人在ebay集成方面有经验之后,主要问题是在标头中提供所有需要的内容。
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;
}
}
}
并在httpclient中需要添加标题。
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;
}