在httpwebrequest文件上传中启用帖子

Question

我需要在服务器上上传文件（具有不同的扩展名，即.txt，.jpg，.pdf ....）。我创建了一个接受HTTP的站点，请求将虚拟目录映射到物理目录。所有THI在嫁妆中都可以正常工作，现在我必须实现上传。

这是我的代码

private void UploadFile(string uploadFileName, string localFileName)
    {
        //long length = 0;
        string boundary = "----------------------------" + DateTime.Now.Ticks.ToString("x");
        HttpWebRequest httpWebRequest2 = (HttpWebRequest)WebRequest.Create(uploadFileName);
        httpWebRequest2.ContentType = "multipart/form-data; boundary=" + boundary;
        httpWebRequest2.Method = "POST";
        httpWebRequest2.KeepAlive = true;
        httpWebRequest2.Credentials = new NetworkCredential("USER", "PASSWORD", "DOMAIN"); 
        Stream memStream = new System.IO.MemoryStream();
        byte[] boundarybytes = System.Text.Encoding.ASCII.GetBytes("rn--" +boundary + "rn");
        string formdataTemplate = "rn--" + boundary +"rnContent-Disposition: form-data; name="{0}";rnrn{1}";
        memStream.Write(boundarybytes, 0, boundarybytes.Length);
        string headerTemplate = "Content-Disposition: form-data; name="{0}"; filename="{1}"rn Content-Type: application/octet-streamrnrn";
        string header = string.Format(headerTemplate, "uplTheFile", localFileName);
        byte[] headerbytes = System.Text.Encoding.UTF8.GetBytes(header);
        memStream.Write(headerbytes, 0, headerbytes.Length);
        FileStream fileStream = new FileStream(localFileName, FileMode.Open, FileAccess.Read);
        byte[] buffer = new byte[1024];
        int bytesRead = 0;
        while ((bytesRead = fileStream.Read(buffer, 0, buffer.Length)) != 0)
        {
            memStream.Write(buffer, 0, bytesRead);
        }
        memStream.Write(boundarybytes, 0, boundarybytes.Length);
        fileStream.Close();
        httpWebRequest2.ContentLength = memStream.Length;
        Stream requestStream = httpWebRequest2.GetRequestStream();
        //error returned in lenght field: "This stream does not support seek operations."
        memStream.Position = 0;
        byte[] tempBuffer = new byte[memStream.Length];
        memStream.Read(tempBuffer, 0, tempBuffer.Length);
        memStream.Close();
        requestStream.Write(tempBuffer, 0, tempBuffer.Length);
        requestStream.Close();
        WebResponse webResponse2 = httpWebRequest2.GetResponse();
        //error returned from getResponse: "The remote server returned an error: (405) Method Not Allowed."
        //I guess cause my folder is in read only
        Stream stream2 = webResponse2.GetResponseStream();
        StreamReader reader2 = new StreamReader(stream2);
        MessageBox.Show(reader2.ReadToEnd());
        webResponse2.Close();
        httpWebRequest2 = null;
        webResponse2 = null; 
    }

首先，我得到了此错误：远程服务器返回了一个错误：（405）不允许的方法。因此，我尝试通过在网站上添加映射来启用帖子。

现在，在TE服务器上的文件夹中，我有一个web.config文件：

    <?xml version="1.0" encoding="UTF-8"?>
 <configuration>
    <system.webServer>
    <directoryBrowse enabled="true" />
    <handlers>
        <add name="File TXT" path="*.*" verb="*" modules="IsapiModule" scriptProcessor="C:WindowsSystem32inetsrvasp.dll" resourceType="Unspecified" requireAccess="Script" preCondition="bitness64" />
    </handlers>
</system.webServer>
</configuration>

以这种方式，我不会遇到任何错误，但是该应用程序不会上传任何文件。我如何解决这个问题？

Answer 1

一个简单得多的解决方案是使用system.net.webclient类上传文件。

System.Net.WebClient client = new System.Net.WebClient();
client.UploadFile("www.myfileuploadendpoint.com",@"c:myfiletoupload.txt");

客户端还具有一个Onuploadfilecomplet的事件，该事件将在完成后调用处理程序。

client.OnUploadFileCompleted  += UploadCompleted(sender,args) => { //do whatever you want}

这将节省您的代码和错误。祝你好运！：）

Answer 2

上述两个样本不起作用，

1. "远程服务器返回了一个错误：（405）不允许的方法。"是尝试以上两个代码而被发现的例外

希望有人在这些例外分享他们的想法。

rgds，thiru