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我正在尝试编写一个关于读取图像列表的代码,并使用Cognitive Service MVC.NET从它获取信息。获取图像信息Cognitve服务 - 错误请求ASP.NET MVC c#
我写了这个代码:
public async Task<ActionResult> Index()
{
List<string> list = await ReadImages();
return View(list);
}
private async Task<List<string>> ReadImages()
{
List<string> list = new List<string>();
string[] photoEntries = Directory.GetFiles(_photoFolder);
foreach (string photo in photoEntries)
{
list.Add(await GetCaptionAsync(photo));
}
return list;
}
private async Task<string> GetCaptionAsync(string photo)
{
using (var client = new HttpClient())
{
var queryString = HttpUtility.ParseQueryString(string.Empty);
//setup HttpClient
client.DefaultRequestHeaders.Add("Ocp-Apim-Subscription-Key", _apiKey);
queryString["visualFeatures"] = "Categories";
queryString["details"] = "Celebrities";
queryString["language"] = "en";
var uri = "https://westus.api.cognitive.microsoft.com/vision/v1.0/analyze?" + queryString;
HttpResponseMessage response;
byte[] byteData = Encoding.UTF8.GetBytes(photo);
using (var content = new ByteArrayContent(byteData))
{
content.Headers.ContentType = new MediaTypeHeaderValue("application/octet-stream");
response = await client.PostAsync(uri, content);
}
return response.Content.ToString();
}
}
的观点是:
@model List<string>
@foreach (var item in Model)
{
@item
}
我收到了一个错误:在该行400错误请求:
response = await client.PostAsync(uri, content);
我不知道这段代码有什么问题,请有人帮我解释一下这个问题? 谢谢
你要发送的文件名不是实际的文件。 – Crowcoder
如何解决这个问题? –
File.ReadAllBytes(照片)应该工作。 – Crowcoder