上传文件的HttpWebRequest(的multipart / form-data的) [英] Upload files with HTTPWebrequest (multipart/form-data)

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本文介绍了上传文件的HttpWebRequest(的multipart / form-data的)的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!

问题描述

有任何类,库或某一段code,这将有助于我是的HttpWebRequest 上传文件?

Is there any class, library or some piece of code which will help me to upload files with HTTPWebrequest?

编辑2:

我不想上传到WebDAV文件夹或类似的东西。我想模拟浏览器,因此就像你自己的头像上传到论坛或通过上传形式的文件中的Web应用程序。上传到它使用的multipart / form-data的一种形式。

I do not want to upload to a WebDAV folder or something like that. I want to simulate a browser, so just like you upload your avatar to a forum or upload a file via form in a web application. Upload to a form which uses a multipart/form-data.

编辑:

Web客户端不包括我的要求,所以我在寻找一个解决方案的的HttpWebRequest

WebClient is not cover my requirements, so I'm looking for a solution with HTTPWebrequest.

推荐答案

我一直在寻找这样的事情,发现: <一href="http://bytes.com/groups/net-c/268661-how-upload-file-via-c-$c$c">http://bytes.com/groups/net-c/268661-how-upload-file-via-c-$c$c

I was looking for something like this, Found in : http://bytes.com/groups/net-c/268661-how-upload-file-via-c-code

public static  void UploadFilesToRemoteUrl(string url, string[] files, string
logpath, NameValueCollection nvc)
{

    long length = 0;
    string boundary = "----------------------------" +
    DateTime.Now.Ticks.ToString("x");


    HttpWebRequest httpWebRequest2 = (HttpWebRequest)WebRequest.Create(url);
    httpWebRequest2.ContentType = "multipart/form-data; boundary=" +
    boundary;
    httpWebRequest2.Method = "POST";
    httpWebRequest2.KeepAlive = true;
    httpWebRequest2.Credentials =
    System.Net.CredentialCache.DefaultCredentials;



    Stream memStream = new System.IO.MemoryStream();

    byte[] boundarybytes = System.Text.Encoding.ASCII.GetBytes("\r\n--" +
    boundary + "\r\n");


    string formdataTemplate = "\r\n--" + boundary +
    "\r\nContent-Disposition: form-data; name=\"{0}\";\r\n\r\n{1}";

    foreach (string key in nvc.Keys)
    {
        string formitem = string.Format(formdataTemplate, key, nvc[key]);
        byte[] formitembytes = System.Text.Encoding.UTF8.GetBytes(formitem);
        memStream.Write(formitembytes, 0, formitembytes.Length);
    }


    memStream.Write(boundarybytes, 0, boundarybytes.Length);

    string headerTemplate = "Content-Disposition: form-data; name=\"{0}\"; filename=\"{1}\"\r\n Content-Type: application/octet-stream\r\n\r\n";

    for (int i = 0; i < files.Length; i++)
    {

        //string header = string.Format(headerTemplate, "file" + i, files[i]);
        string header = string.Format(headerTemplate, "uplTheFile", files[i]);

        byte[] headerbytes = System.Text.Encoding.UTF8.GetBytes(header);

        memStream.Write(headerbytes, 0, headerbytes.Length);


        FileStream fileStream = new FileStream(files[i], 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();

    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();

    Stream stream2 = webResponse2.GetResponseStream();
    StreamReader reader2 = new StreamReader(stream2);


    MessageBox.Show(reader2.ReadToEnd());

    webResponse2.Close();
    httpWebRequest2 = null;
    webResponse2 = null;
}

这篇关于上传文件的HttpWebRequest(的multipart / form-data的)的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!

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