C# 通过 HttpClient 上传图片 POST

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29

public string PostUploadImage(string uploadUrl, string imgPath, string fileparameter = "file")         {             if (uploadUrl.StartsWith("https")) { System.Net.ServicePointManager.SecurityProtocol = SecurityProtocolType.Tls; }               using (HttpClient httpClient = new HttpClient())             {                 using (MultipartFormDataContent httpContent = new MultipartFormDataContent())                 {                     using (var fileContent = new ByteArrayContent(System.IO.File.ReadAllBytes(imgPath)))                     {                         int pos = imgPath.LastIndexOf("/");                         string fileName = imgPath.Substring(pos + 1);                         httpContent.Add(fileContent, fileparameter, fileName);                         using (HttpResponseMessage response = httpClient.PostAsync(uploadUrl, httpContent).Result)                         {                               if (response.IsSuccessStatusCode)                             {                                 string result = response.Content.ReadAsStringAsync().Result;                                 return result;                             }                             return null;                         }                     }                                           }               }         }

 调用：

PostUploadImage(URL 地址, 文件路径);