Question

的图片上传网站

我的代码看起来与它们提供的PHP代码完全相同。但是，在他们的PHP代码中，他们是http_build_query($pvars);

在发布之前，似乎他们正在对其查询进行URLEncoding。编辑：请注意，我已经更改为完整的.NET 3.5而不是客户端配置文件。这样，我就可以访问system.web，因此我使用了httputliity.urlencode()。这使得api返回“失败”，并且“没有发送图像”。如果我没有编码，那么API返回一个“okay”，其中包含指向图片的链接，但是没有上传图片（如空白文件）。

如何修复我的代码以适应其API？

 Image image = Image.FromFile("C:\\Users\\Affan\\Pictures\\1509310.jpg");
        MemoryStream ms = new MemoryStream();
        // Convert Image to byte[]
        image.Save(ms, System.Drawing.Imaging.ImageFormat.Jpeg);
        byte[] imageBytes = ms.ToArray();

        WebRequest wb = WebRequest.Create(new Uri("http://imgur.com/api/upload.xml"));
        wb.ContentType = "application/x-www-form-urlencoded";            
        wb.Method = "POST";
        wb.Timeout = 10000;
        Console.WriteLine(imageBytes.Length);
        string parameters = "key=433a1bf4743dd8d7845629b95b5ca1b4&image=" + Convert.ToBase64String(imageBytes);


        Console.WriteLine("parameters: " + parameters.Length);
        System.Text.UTF8Encoding encoding = new System.Text.UTF8Encoding();
        byte[] bytes = encoding.GetBytes(parameters);
        // byte[] bytes = Convert.FromBase64String(parameters);

        System.IO.Stream os = null;
        try { // send the Post
            wb.ContentLength = bytes.Length;   //Count bytes to send
            os = wb.GetRequestStream();               
            os.Write(bytes, 0, bytes.Length);         //Send it
        } catch (WebException ex) {
            MessageBox.Show(ex.Message, "HttpPost: Request error");
            Console.WriteLine(ex.Message);
        } finally {
            if (os != null) {
               // os.Close();
            }
        }

        try { // get the response
            WebResponse webResponse = wb.GetResponse();

            StreamReader sr = new StreamReader(webResponse.GetResponseStream());
            //MessageBox.Show(sr.ReadToEnd().Trim());
            Console.WriteLine(sr.ReadToEnd().Trim());
        } catch (WebException ex) {
            MessageBox.Show(ex.Message, "HttpPost: Response error");
        }

Answer 1

我刚刚上传了这张图片

Hello World

使用此代码：

using (var w = new WebClient())
{
    var values = new NameValueCollection
    {
        { "key", "433a1bf4743dd8d7845629b95b5ca1b4" },
        { "image", Convert.ToBase64String(File.ReadAllBytes(@"hello.png")) }
    };

    byte[] response = w.UploadValues("http://imgur.com/api/upload.xml", values);

    Console.WriteLine(XDocument.Load(new MemoryStream(response)));
}

您可能希望立即更改API密钥： - ）

输出结果为：

<rsp stat="ok">
  <image_hash>IWg2O</image_hash>
  <delete_hash>fQAXiR2Fdq</delete_hash>
  <original_image>http://i.imgur.com/IWg2O.png</original_image>
  <large_thumbnail>http://i.imgur.com/IWg2Ol.jpg</large_thumbnail>
  <small_thumbnail>http://i.imgur.com/IWg2Os.jpg</small_thumbnail>
  <imgur_page>http://imgur.com/IWg2O</imgur_page>
  <delete_page>http://imgur.com/delete/fQAXiR2Fdq</delete_page>
</rsp>

Answer 2

以下是使用匿名上传的v3 API的dtb答案的更新版本（您需要在http://api.imgur.com/注册您的应用以获取您的客户ID）：

using (var w = new WebClient())
{
    string clientID = "<<INSERT YOUR ID HERE>>";
    w.Headers.Add("Authorization", "Client-ID " + clientID);
    var values = new NameValueCollection
    {
        { "image", Convert.ToBase64String(File.ReadAllBytes(@"hello.png")) }
    };

    byte[] response = w.UploadValues("https://api.imgur.com/3/upload.xml", values);

    Console.WriteLine(XDocument.Load(new MemoryStream(response)));
}

现在的反应是这样的（见http://api.imgur.com/models/image）：

<data success="1" status="200">
    <id>SbBGk</id>
    <title/>
    <description/>
    <datetime>1341533193</datetime>
    <type>image/jpeg</type>
    <animated>false</animated>
    <width>2559</width>
    <height>1439</height>
    <size>521916</size>
    <views>1</views>
    <bandwidth>521916</bandwidth>
    <deletehash>eYZd3NNJHsbreD1</deletehash>
    <section/>
    <link>http://i.imgur.com/SbBGk.jpg</link>
</data>

Answer 3

我猜不推荐dtb解决方案

    using (var w = new WebClient())
    {
        var values = new NameValueCollection
    {
        {"image", Convert.ToBase64String(imageData)},
        {"type", "base64"}
    };

        w.Headers.Add("Authorization", "Client-ID xxxxxxxxx");
       var response = w.UploadValues("https://api.imgur.com/3/image", values);
    }

另一种方法：

        HttpWebRequest request = (HttpWebRequest)WebRequest.Create("https://api.imgur.com/3/image");
        request.Headers.Add("Authorization", "Client-ID xxxxxxx");
        request.Method = "POST";

        ASCIIEncoding enc = new ASCIIEncoding();
        string postData = Convert.ToBase64String(imageData);
        byte[] bytes = enc.GetBytes(postData);

        request.ContentType = "application/x-www-form-urlencoded";
        request.ContentLength = bytes.Length;

        Stream writer = request.GetRequestStream();
        writer.Write(bytes, 0, bytes.Length);

        HttpWebResponse response = (HttpWebResponse)request.GetResponse();

上传到imgur.com

3 个答案: