问题描述

微信永久视频上传报错41005 媒体文件丢失

@using (Html.BeginForm(""UploadVideo""AddForeverVideo"" FormMethod.Post new { enctype = ""multipart/form-data"" })) {
选择上传媒体文件：

}
上面是一个input type为file ，name=“description” id=“description”还有一个submit提交按钮
---------------------------------
上面是前台页面
-------------------------------------------------------------
///
/// 这个借口没有通过
///
///
///
public ActionResult UploadVideo(FormCollection collection)
{
string result = """";
HttpPostedFileBase file = Request.Files[0];
string access_token = pub.GetExistAccessToken();
string localpath = ""D:SimpleMyTestimage"" + file.FileName;
file.SaveAs(localpath);//保存本地用于数据库
result = WXApi.AddForeverVideo(access_token filevideo"");

return Content(result);
}
------------------
上面是控制器代码
------------------------------
public static string MaterialUploads(string accessToken HttpPostedFileBase isFile string materialType string title = """" string introduction = """")
{
string url = ""https://api.weixin.qq.com/cgi-bin/material/add_material?access_token={0}&type={1}"";
url = string.Format(url accessToken materialType);

        //设置提交表单的名称        string formName = materialType == ""video"" ? ""description"" : ""media"";        byte[] datas = null;        #region 组合正文        //换行        string CRLF = ""rn"";        //边界标识        string Identification = ""----"" + DateTime.Now.ToString(""yyyy-MM-dd HH:mm:ss"");        try        {            //生成表单信息            StringBuilder sb = new StringBuilder();            sb.Append(""--"");            sb.Append(Identification);            sb.Append(CRLF);            sb.Append(""Content-Disposition: form-data; id="""" + formName + """"; name="""" + formName + """"; filename="""" + isFile.FileName + """""");            sb.Append(CRLF);            sb.Append(""Content-Type: "" + isFile.ContentType.ToLower() + """");            sb.Append(CRLF);            sb.Append(CRLF);            //如果是视频数据，就添加视频标题与视频的描述信息            if (materialType.ToLower() == ""video"")            {                sb.Append("" description=""{""title"":"""" + title + """" ""introduction"":"""" + introduction + """"}"""");                sb.Append(CRLF);                sb.Append(CRLF);            }            //头部与尾部            string header = sb.ToString();            string foot = CRLF + ""--"" + Identification + ""--"" + CRLF;            //转为byte[]流            byte[] headerbytes = Encoding.UTF8.GetBytes(header);            byte[] footbytes = Encoding.UTF8.GetBytes(foot);            List<byte> datalist = new List<byte>();            //转换为btye[]数据流            Stream stream = isFile.InputStream;            byte[] data = new byte[stream.Length];            stream.Read(data 0 data.Length);            // 设置当前流的位置为流的开始             stream.Seek(0 SeekOrigin.Begin);            datalist.AddRange(headerbytes);            datalist.AddRange(data);            datalist.AddRange(footbytes);            //组合完整的流数据            datas = datalist.ToArray<byte>();        }        catch (Exception)        {            return ""正文组合失败"";        }        #endregion        return MaterialUploadd(datas url Identification);    }