在邮递员中很容易做到:
为了通过Web API实现它,我编写了以下代码:
HttpClient client = new HttpClient();
string url = "https://upload.*******.com/api/upload/photos";
client.BaseAddress = new Uri(url);
client.DefaultRequestHeaders.Clear();
client.DefaultRequestHeaders.Accept.Add(new MediaTypeWithQualityHeaderValue("multipart/form-data"));
byte[] data;
using (var br = new BinaryReader(inputPhotoUpload.files.OpenReadStream()))
data = br.ReadBytes((int) inputPhotoUpload.files.OpenReadStream().Length);
ByteArrayContent bytes = new ByteArrayContent(data);
MultipartFormDataContent multipartFormDataContent = new
MultipartFormDataContent();
multipartFormDataContent.Add(new StringContent(inputPhotoUpload.watermark.ToString()), "watermark");
multipartFormDataContent.Add(new StringContent("listing"), "type");
multipartFormDataContent.Add(bytes, "files", inputPhotoUpload.files.FileName);
HttpResponseMessage res = await client.PostAsync(url, multipartFormDataContent);
我的InputPhotoUpload类
public class InputPhotoUpload
{
public string watermark { get; set; }
public string type { get; set; }
public IFormFile files { get; set; }
}
上传服务器接受字节数组中的图像和其他两个名为listing
和watermark
的值。服务器给出代码500内部错误。我的目标是发布一个表单数据发布来上传图像,发布人可以做到,但我的控制器api无法发布。
显然,我需要将所有标头与邮递员同步,有些是不必要的。
HttpClient client = new HttpClient();
MultipartFormDataContent form = new MultipartFormDataContent();
client.DefaultRequestHeaders.Clear();
ByteArrayContent bytes = new ByteArrayContent(imageStream);
form.Add(bytes, "files", imageName);
form.Add(new StringContent("En"), "watermark");
form.Add(new StringContent("listing"), "type");
HttpResponseMessage response = await client.PostAsync("https://upload.*****.com/api/upload/photos", form);
var k = response.Content.ReadAsStringAsync().Result;
_Result = JsonConvert.DeserializeObject<List<Output>>(k);