如何解决通过 REST API 在 C# 中将图像上传到 ServiceNow
我正在尝试使用此链接中提供的 SNow ServiceNow
将图像上传到 API
事件:
https://developer.servicenow.com/dev.do#!/reference/api/orlando/rest/c_AttachmentAPI#r_AttachmentAPI-POSTmultipart
string url = "https://mycompany.service-Now.com/api/Now/attachment/upload/",userName = "MyUser",passwd = "MyPassword";
var httpclienthandler = new httpclienthandler()
{
Credentials = new NetworkCredential(userName,passwd),};
using (var httpClient = new HttpClient(httpclienthandler))
{
// Add an Accept header for JSON format.
httpClient.DefaultRequestHeaders.Accept.Clear();
httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
var multipartContent = new MultipartFormDataContent();
multipartContent.Headers.TryAddWithoutValidation("Content-Type","multipart/form-data");
multipartContent.Add(new StringContent("incident"),"table_name");
multipartContent.Add(new StringContent("f264fd3a1bghghgjjhg8f7b4bcbb6"),"table_sys_id"); // id of my incident
multipartContent.Add(new ByteArrayContent(File.ReadAllBytes("D:\\MyImage.jpeg")),"uploadFile","MyImage.jpeg");
var response = httpClient.PostAsync(new Uri(url),multipartContent).Result;
string result = response.Content.ReadAsstringAsync().Result;
MessageBox.Show(result);
}
但是,我不断收到:
请求的URI不代表任何资源
可能是什么问题以及如何相应地调整代码?
解决方法
删除 url
末尾的“/”,并在标题中的键周围添加双引号后:
最终的工作代码是:
string url = "https://mycompany.service-now.com/api/now/attachment/upload",userName = "MyUser",passwd = "MyPassword";
var httpClientHandler = new HttpClientHandler()
{
Credentials = new NetworkCredential(userName,passwd),};
using (var httpClient = new HttpClient(httpClientHandler))
{
// Add an Accept header for JSON format.
httpClient.DefaultRequestHeaders.Accept.Clear();
httpClient.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("application/json"));
var fileStream = new ByteArrayContent(File.ReadAllBytes("D:\\Image.jpeg"));
fileStream.Headers.Remove("Content-Type");
fileStream.Headers.Add("Content-Type","application/octet-stream");
fileStream.Headers.Add("Content-Transfer-Encoding","binary");
fileStream.Headers.Add("Content-Disposition",$"form-data;name=\"uploadFile\"; filename=\"{"Image.jpeg"}\"");
var multipartContent = new MultipartFormDataContent();
multipartContent.Add(new StringContent("incident"),"\"table_name\"");
multipartContent.Add(new StringContent("f264fd3a1bghghgjjhg8f7b4bcbb6"),"\"table_sys_id\"");
multipartContent.Add(fileStream,"uploadFile");
var response = httpClient.PostAsync(new Uri(url),multipartContent).Result;
string result = response.Content.ReadAsStringAsync().Result;
MessageBox.Show(result);
}
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