关于HttpWebRequest上传文件的问题

[灰太狼已不再单身]

现在，我们要向服务器上传ZIP或xml文件，使用HttpWebRequest 或webclient，但是，目前我没有成功。
服务器端的是java代码，upload参数是必须的，但是，这个参数，怎么加到我的asp.net里面啊，求教。
上传代码如下：
调用方法代码

string posturl = "http://jshz.sme.gov.cn/ws/receive.action";
string para = "username=" + username + "&pwd=" + pwd;
 byte[] buffer = null;
                    using (FileStream fileStream = new FileStream(path + "\\" + fname, FileMode.Open, FileAccess.Read))
                    {
                        buffer = new Byte[checked((uint)Math.Min(4096, (int)fileStream.Length))];
                    }
                    responseData = HttpHelper.PostFile(loginurl, para, "application/x-www-form-urlencoded", buffer, fname, "application/x-www-form-urlencoded", posturl);

/// <summary>
        /// 利用HttpWebRequest上传文件
        /// </summary>
        /// <param name="loginurl">登录验证接口URL</param>
        /// <param name="loginbody"></param>
        /// <param name="logincontentType"></param>
        /// <param name="filebyte">文件字节</param>
        /// <param name="filename">文件名称</param>
        /// <param name="filetype">文件类型PostedFile.ContentType</param>
        /// <param name="posturl">接收文件的接口URL</param>
        /// <returns></returns>
        public static string PostFile(string loginurl, string loginbody, string logincontentType, byte[] filebyte, string filename, string filetype, string posturl)
        {
            //获取要上传的文件信息
            byte[] data = filebyte;
            string fileName = filename;
            string fileType = filetype;
            string fileSize = data.Length.ToString();

            HttpWebRequest myRequest = null;

            #region 登录
            myRequest = (HttpWebRequest)WebRequest.Create(loginurl);
            myRequest.ContentType = logincontentType;
            myRequest.Method = "POST";
            myRequest.Timeout = 1000 * 60;
            myRequest.CookieContainer = mycookie;

            byte[] btBodys = Encoding.UTF8.GetBytes(loginbody);
            myRequest.ContentLength = btBodys.Length;
            myRequest.GetRequestStream().Write(btBodys, 0, btBodys.Length);

            HttpWebResponse httpWebResponse = (HttpWebResponse)myRequest.GetResponse();
            StreamReader streamReader = new StreamReader(httpWebResponse.GetResponseStream());
            string responseContent = streamReader.ReadToEnd();

            httpWebResponse.Cookies = mycookie.GetCookies(myRequest.RequestUri);//获取一个包含url的cookie集合的cookiecollection  

            #endregion

            //上传文件
            myRequest = (HttpWebRequest)WebRequest.Create(posturl);
            myRequest.Method = "POST";
            myRequest.ContentType = fileType;
            myRequest.ContentLength = data.Length;
            myRequest.CookieContainer = mycookie;
            myRequest.Headers.Add("FileType", HttpContext.Current.Server.UrlEncode(fileType));
            myRequest.Headers.Add("FileSize", fileSize);
            myRequest.Headers.Add("FileName", HttpContext.Current.Server.UrlEncode(fileName));

            using (Stream newStream = myRequest.GetRequestStream())
            {
                // Send the data.
                newStream.Write(data, 0, data.Length);
                newStream.Close();
            }

            // Get response
            HttpWebResponse myResponse = (HttpWebResponse)myRequest.GetResponse();
            StreamReader reader = new StreamReader(myResponse.GetResponseStream(), Encoding.UTF8);
            string content = reader.ReadToEnd();

            return content;
        }

图片是java上传的实例

[灰太狼已不再单身]

我现在上传提示错误：参数错误。。。然后，问了对方，那人说 upload参数是必须的，我就不知道这个参数是加到哪儿的

[by_封爱]

string SendPostRequest(string url, string postString)
    {
        byte[] postData = Encoding.UTF8.GetBytes(postString);
        WebClient client = new WebClient();
        client.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
        client.Headers.Add("ContentLength", postData.Length.ToString());
        byte[] responseData = client.UploadData(url, "POST", postData);
        return Encoding.UTF8.GetString(responseData);
    }

Response.Write(SendPostRequest("http://www.webxml.com.cn/WebServices/WeatherWebService.asmx/getSupportCity", "byProvinceName=辽宁"));

看下这个 这是请求服务 参数byProvinceName是辽宁 可以正确post给server 不知道对你有没有帮助..

[hb1122]

string SendPostRequest(string url, string postString)
    {
        byte[] postData = Encoding.UTF8.GetBytes(upload + postString);
        WebClient client = new WebClient();
        client.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
        client.Headers.Add("ContentLength", postData.Length.ToString());
        byte[] responseData = client.UploadData(url, "POST", postData);
        return Encoding.UTF8.GetString(responseData);
    }

试试

[hb1122]

string SendPostRequest(string url, string postString)
    {
        byte[] postData = Encoding.UTF8.GetBytes("upload=" + postString);
        WebClient client = new WebClient();
        client.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
        client.Headers.Add("ContentLength", postData.Length.ToString());
        byte[] responseData = client.UploadData(url, "POST", postData);
        return Encoding.UTF8.GetString(responseData);
    }

试试

[灰太狼已不再单身]

引用 4 楼 hb1122 的回复:

string SendPostRequest(string url, string postString)
    {
        byte[] postData = Encoding.UTF8.GetBytes("upload=" + postString);
        WebClient client = new WebClient();
        client.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
        client.Headers.Add("ContentLength", postData.Length.ToString());
        byte[] responseData = client.UploadData(url, "POST", postData);
        return Encoding.UTF8.GetString(responseData);
    }

试试

OK,我试试，刚才我问了对方，对方也说 upload 是上传的文件流

[灰太狼已不再单身]

引用 7 楼 hb1122 的回复:

[quote=引用 5 楼 lifueng 的回复:] [quote=引用 4 楼 hb1122 的回复:]

string SendPostRequest(string url, string postString)
    {
        byte[] postData = Encoding.UTF8.GetBytes("upload=" + postString);
        WebClient client = new WebClient();
        client.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
        client.Headers.Add("ContentLength", postData.Length.ToString());
        byte[] responseData = client.UploadData(url, "POST", postData);
        return Encoding.UTF8.GetString(responseData);
    }

试试

OK,我试试，刚才我问了对方，对方也说 upload 是上传的文件流[/quote] 结贴给分啊，火火火[/quote] 上传还是不成功，一直提示参数错误

[hb1122]

引用 5 楼 lifueng 的回复:

[quote=引用 4 楼 hb1122 的回复:]

string SendPostRequest(string url, string postString)
    {
        byte[] postData = Encoding.UTF8.GetBytes("upload=" + postString);
        WebClient client = new WebClient();
        client.Headers.Add("Content-Type", "application/x-www-form-urlencoded");
        client.Headers.Add("ContentLength", postData.Length.ToString());
        byte[] responseData = client.UploadData(url, "POST", postData);
        return Encoding.UTF8.GetString(responseData);
    }

试试

OK,我试试，刚才我问了对方，对方也说 upload 是上传的文件流[/quote] 结贴给分啊，火火火