将图像/文件上载到服务器时，ServiceStack会引发UnauthorizedAccessException

Question

我使用了@scott对这个问题的回答中的以下代码。我如何将图像上传到ServiceStack服务？

[Route("/upload","POST")]
public class UploadFileRequest
{
    // Example of other properties you can send with the request
    public string[] Tags { get; set; }
}
class MyFileService : Service
{
    public bool Post(UploadFileRequest request)
    {
        // Check a file has been attached
        if(Request.Files == null || Request.Files.Length == 0)
            throw new HttpError(400, "Bad Request", "No file has been uploaded");
        // Save the file
        Request.Files[0].SaveTo(Request.Files[0].FileName);
        // Maybe store the tags (or any other data in the request)
        // request.Tags
        return true;
    }
}

然后在你的Android应用程序中使用JsonServiceClient，那么你只需要这样做：

var filename = "cab.jpg"; // The path of the file to upload
var client = new JsonServiceClient("http://212.175.132.168/service/api/");
using(var fileStream = File.OpenRead(filename))
{
    client.PostFileWithRequest<bool>(fileStream, "cab.jpg", new UploadFileRequest { Tags = new[] { "Cab", "Taxis", "NewYork", "Yellow" }});
}

我在我的DTO和Android应用程序中使用了这个，但当我尝试发送它时，它总是失败，并出现以下服务器错误：

{"ResponseStatus": {"ErrorCode":"UnauthorizedAccessException","Message":"'C:\Windows\SysWOW64\inetsrv\a.png' path denied.", 'C:WindowsSysWOW64inetsrva.png' path denied.

有人能分享Mondroid ServiceStack图片上传示例吗？

谢谢。

Answer 1

示例代码没有任何问题，您从我在这里给出的答案中得到的，您在Monodroid客户端中使用了它。它使用ServiceStack PCL库在Mondroid上工作，无需修改。

Monodroid:

无需修改。

var filename = "cab.jpg"; // The path of the file to upload
var client = new JsonServiceClient("http://212.175.132.168/service/api/");
using(var fileStream = File.OpenRead(filename))
{
    client.PostFileWithRequest<bool>(fileStream, "cab.jpg", new UploadFileRequest { Tags = new[] { "Cab", "Taxis", "NewYork", "Yellow" }});
}

服务器文件权限错误：

上载到ServiceStack服务时收到的错误消息显示，您的服务器进程无权将文件写入此目录C:WindowsSysWOW64inetsrv。

{
    "ResponseStatus":     
    {
        "ErrorCode":"UnauthorizedAccessException",
        "Message":"'C:WindowsSysWOW64inetsrva.png' path denied."
    }
}

您需要更新服务器端服务，以便将文件写入服务有权限访问的路径。

class MyFileService : Service
{
    public bool Post(UploadFileRequest request)
    {
        // Check a file has been attached
        if(Request.Files == null || Request.Files.Length == 0)
            throw new HttpError(400, "Bad Request", "No file has been uploaded");
        // Replace with a path you have permission to write to
        var path = @"c:tempimage.png";
        // Save the file
        Request.Files[0].SaveTo(path);
        // Maybe store the tags (or any other data in the request)
        // request.Tags
        return true;
    }
}

如果你修复了权限错误，你会发现它是有效的。