2

这是 Python 中的工作代码(使用 cURL):

#!/usr/bin/python

import pycurl

c = pycurl.Curl()
values = [
          ("key", "YOUR_API_KEY"),
          ("image", (c.FORM_FILE, "file.png"))]
# OR:     ("image", "http://example.com/example.jpg"))]
# OR:     ("image", "BASE64_ENCODED_STRING"))]

c.setopt(c.URL, "http://imgur.com/api/upload.xml")
c.setopt(c.HTTPPOST, values)

c.perform()
c.close()

这是我在 C# 中的内容:

public void UploadImage()
    {
        //I think this line is doing something wrong.
        //byte[] x = File.ReadAllBytes(@"C:\Users\Sergio\documents\visual studio 2010\Projects\WpfApplication1\WpfApplication1\Test\hotness2.jpg");

        //If I do it like this, using a direct URL everything works fine.
        string parameters = @"key=1b9189df79bf3f8dff2125c22834210903&image=http://static.reddit.com/reddit.com.header.png"; //Convert.ToBase64String(x);
        WebRequest webRequest = WebRequest.Create(new Uri("http://imgur.com/api/upload"));

        webRequest.ContentType = "application/x-www-form-urlencoded";
        webRequest.Method = "POST";
        byte[] bytes = Encoding.ASCII.GetBytes(parameters);

        Stream os = null;
        try
        { // send the Post
            webRequest.ContentLength = bytes.Length;   //Count bytes to send
            os = webRequest.GetRequestStream();
            os.Write(bytes, 0, bytes.Length);         //Send it
        }
        catch (WebException ex)
        {
            MessageBox.Show(ex.Message, "HttpPost: Request error");

        }
        finally
        {
            if (os != null)
            {
                os.Close();
            }
        }

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

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

    }

现在,我注意到当我将参数字符串中的 API 密钥更改为“239231”或任何数字时,我得到的响应是:“无效的 API 密钥”。所以我认为某些事情必须正常工作。

我放置了正确的API 密钥,现在我得到了不同的响应:“无效的图像格式。尝试上传 JPEG 图像。”

我使用的服务几乎接受所有图像格式,所以我 100% 确定错误出在我发送文件的方式上。任何人都可以解释一下吗?

编辑!!!

事实证明,当我上传 JPG 图像时,我得到了那个灰色框的东西。如果我上传一个大的 jpg 图像,我什么也得不到。例如:http: //i.imgur.com/gFsUY.jpg

当我上传PNG时,上传的图像甚至不显示。

我确定问题出在编码上。我能做些什么?

编辑2!!!

现在我 100% 确定问题出在方法的第一行。File.ReadAllBytes() 一定是做错了什么。如果我上传一个 URL 文件,每一个都很好:http: //imgur.com/sVH61.png

我想知道我应该使用什么编码。:S

4

6 回答 6

3

试试这个:

string file = @"C:\Users\Sergio\documents\visual studio 2010\Projects\WpfApplication1\WpfApplication1\Test\Avatar.png";
string parameters = @"key=1df918979bf3f8dff2125c22834210903&image=" +
    Convert.ToBase64String(File.ReadAllBytes(file));
于 2010-01-11T18:44:13.933 回答
3

您应该正确地形成一个多部分的 POST 请求。在此处查看示例:使用 HTTPWebrequest (multipart/form-data) 上传文件

于 2010-01-11T19:59:22.000 回答
1

读取 API 中发布的图片

public IHttpActionResult UpdatePhysicianImage(HttpRequestMessage request)
    {
        try
        {
            var form = HttpContext.Current.Request.Form;
            var model = JsonConvert.DeserializeObject<UserPic>(form["json"].ToString());
            bool istoken = _appdevice.GettokenID(model.DeviceId);
            if (!istoken)
            {
                statuscode = 0;
                message = ErrorMessage.TockenNotvalid;
                goto invalidtoken;
            }
            HttpResponseMessage result = null;
            var httpRequest = HttpContext.Current.Request;
            if (httpRequest.Files.Count > 0)
            {
                var docfiles = new List<string>();
                foreach (string file in httpRequest.Files)
                {
                    var postedFile = httpRequest.Files[file];
                    // var filePath = uploadPath + postedFile.FileName;
                    //  string fileUrl = Utility.AbsolutePath("~/Data/User/" + model.UserId.ToString());
                    string fileUrl = Utility.AbsolutePath("~/" + Utility.UserDataFolder(model.UserId, "Document"));
                    if (!Directory.Exists(fileUrl))
                    {
                        Directory.CreateDirectory(fileUrl);
                        Directory.CreateDirectory(fileUrl + "\\" + "Document");
                        Directory.CreateDirectory(fileUrl + "\\" + "License");
                        Directory.CreateDirectory(fileUrl + "\\" + "Profile");
                    }
                    string imageUrl = postedFile.FileName;
                    string naviPath = Utility.ProfileImagePath(model.UserId, imageUrl);
                    var path = Utility.AbsolutePath("~/" + naviPath);
                    postedFile.SaveAs(path);
                    docfiles.Add(path);
                    if (model.RoleId == 2)
                    {
                        var doctorEntity = _doctorProfile.GetNameVideoChat(model.UserId);
                        doctorEntity.ProfileImagePath = naviPath;
                        _doctorProfile.UpdateDoctorUpdProfile(doctorEntity);
                    }
                    else
                    {
                        var patientEntity = _PatientProfile.GetPatientByUserProfileId(model.UserId);
                        patientEntity.TumbImagePath = naviPath;
                        _PatientProfile.UpdatePatient(patientEntity);
                    }
                }
                result = Request.CreateResponse(HttpStatusCode.Created, docfiles);
            }
            else
            {
                result = Request.CreateResponse(HttpStatusCode.BadRequest);
            }
        }
        catch (Exception e)
        {
            statuscode = 0;
            message = "Error" + e.Message;
        }
    invalidtoken:
        return Json(modeldata.GetData(statuscode, message));
    }
于 2015-10-17T07:11:59.093 回答
0

尝试改变:-

"application/x-www-form-urlencoded"

"multipart/form-data"
于 2010-01-11T18:42:11.687 回答
0

尝试将 jpg 的内容类型添加到您的多部分边界中。

有关示例,请参见此 uRL(最后)

http://www.w3.org/TR/html401/interact/forms.html#h-17.13.4.2

于 2010-01-11T19:10:38.590 回答
-1

在黑暗中拍摄,但可能会创建一个 Image 实例,将文件保存到 Stream 并使用它将字节读入数组然后上传。

如:

Image i = System.Drawing.Image.FromFile("wut.jpg");
Stream stm = new Stream();
System.Drawing.Imaging.Encoder myEncoder = System.Drawing.Imaging.Encoder.Quality;
System.Drawing.Imaging.EncoderParameters paramz = new System.Drawing.Imaging.EncoderParameters(1);
myEncoderParameter = new EncoderParameter(myEncoder, 100L);
paramz.Param[0] = myEncoderParameter;
i.Save(stm, System.Drawing.Imaging.ImageFormat.Jpeg, paramz);
/* I'm lazy: code for reading Stream into byte[] here */
于 2010-01-12T16:26:35.220 回答