上传图像到imgur原因：Uri字符串太长

Question

即时通讯尝试开发使用Imgur api上传图像的C＃应用​​程序。

这是我的上传功能：

public static string PostToImgur(string imagFilePath, string apiKey) 
{ 
    byte[] imageData; 

    FileStream fileStream = File.OpenRead(imagFilePath); 
    imageData = new byte[fileStream.Length]; 
    fileStream.Read(imageData, 0, imageData.Length); 
    fileStream.Close(); 

    string uploadRequestString = "image=" + Uri.EscapeDataString(System.Convert.ToBase64String(imageData)) + "&key=" + apiKey; 

    HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create("https://api.imgur.com/3/image"); 
    webRequest.Method = "POST"; 
    webRequest.ContentType = "application/x-www-form-urlencoded"; 
    webRequest.ServicePoint.Expect100Continue = false; 
    webRequest.Headers["Authorization"] = "Client-ID abd937cc5e11dc9"; 

    StreamWriter streamWriter = new StreamWriter(webRequest.GetRequestStream()); 
    streamWriter.Write(uploadRequestString); 
    streamWriter.Close(); 

    WebResponse response = webRequest.GetResponse(); 
    Stream responseStream = response.GetResponseStream(); 
    StreamReader responseReader = new StreamReader(responseStream); 

    return responseReader.ReadToEnd(); 
} 

如果IM上传小图片（20KB）一切工作正常。 ，但当im uploding更大的图像（500kb）时出现错误： URI无效：Uri字符串太长。

我该怎么办？

Answer 1

我成功通过划分的base64字符串

这是工作的代码上传大量图片：

public static string PostToImgur(string imagFilePath, string apiKey) 
{ 
    byte[] imageData; 

    FileStream fileStream = File.OpenRead(imagFilePath); 
    imageData = new byte[fileStream.Length]; 
    fileStream.Read(imageData, 0, imageData.Length); 
    fileStream.Close(); 

    const int MAX_URI_LENGTH = 32766; 
    string base64img = System.Convert.ToBase64String(imageData); 
    StringBuilder sb = new StringBuilder(); 

    for (int i = 0; i < base64img.Length; i += MAX_URI_LENGTH) 
    { 
     sb.Append(Uri.EscapeDataString(base64img.Substring(i, Math.Min(MAX_URI_LENGTH, base64img.Length - i)))); 
    } 

    string uploadRequestString = "key=" + apiKey + "&title=" + "imageTitle" + 
     "&caption=" + "img" + "&image=" + sb.ToString(); 

    // string uploadRequestString = "image=" + Uri.EscapeDataString(System.Convert.ToBase64String(imageData)) + "&key=" + apiKey; 

    HttpWebRequest webRequest = (HttpWebRequest)WebRequest.Create("https://api.imgur.com/3/image"); 
    webRequest.Method = "POST"; 
    webRequest.ContentType = "application/x-www-form-urlencoded"; 
    webRequest.ServicePoint.Expect100Continue = false; 
    webRequest.Headers["Authorization"] = "Client-ID abd937cc5e11dc9"; 

    StreamWriter streamWriter = new StreamWriter(webRequest.GetRequestStream()); 
    streamWriter.Write(uploadRequestString); 
    streamWriter.Close(); 

    WebResponse response = webRequest.GetResponse(); 
    Stream responseStream = response.GetResponseStream(); 
    StreamReader responseReader = new StreamReader(responseStream); 

    return responseReader.ReadToEnd(); 
} 

感谢所有。

Answer 2

它们的工作方式是将图像转换为如下形式：System.Convert.ToBase64String(imageData) 将其添加到URI并发送到服务器以解码回图像。

您将无法使用单个URI解决此问题，因为它是imgur设计中固有的。

阅读本作的最大长度的URI可以是：What is the maximum length of a URL in different browsers?