从sharepoint下载文件出错

Zine_Alone 2009-05-12 10:47:01

当我用流读取sharepoint上文件时，老是没能获取到正确大小的文件，而且在读取pdf文件时，会出现文件损坏的错误...下面是代码供大家参考(在测试环境是没问题的，可以正常运行，部署到客户那后就出现这个问题了，两者唯一不同的是客户那是用了SSL).



public void OpenAttachment(string RootFolder, string SubFolder, string FileName, string DocName)

    {

        string url = "";

        try

        {

            //Get the extension of File.

            string[] fext = DocName.Split('.');



            // Get the extension of File to determine the file type

            string casestring = "";

            if (fext.Length > 1)

            {

                casestring = fext[fext.Length - 1];

            }



            //set the content type of file according to extension

            int flag = 0;



            SPWeb web = SPContext.Current.Web;

            web.AllowUnsafeUpdates = true;

            string contentType = "";



            url = SPContext.Current.Web.Url + "/" + RootFolder + "/" + SubFolder + "/" + FileName + "." + casestring;



            SPFile tempFile = web.GetFile(url);



            byte[] obj = (byte[])tempFile.OpenBinary();



            switch (casestring)

            {



                case "txt":



                    contentType = "text/plain";



                    break;



                case "htm": contentType = "text/html";



                    break;



                case "html": contentType = "text/html";



                    break;



                case "rtf": contentType = "text/richtext";



                    break;



                case "jpg": contentType = "image/jpeg";



                    break;



                case "jpeg": contentType = "image/jpeg";



                    break;



                case "gif": contentType = "image/gif";



                    break;



                case "bmp": contentType = "image/bmp";



                    break;



                case "mpg": contentType = "video/mpeg";



                    break;



                case "mpeg": contentType = "video/mpeg";



                    break;



                case "avi": contentType = "video/avi";



                    break;



                case "pdf": contentType = "application/pdf";



                    break;



                case "doc": contentType = "application/msword";



                    break;



                case "dot": contentType = "application/msword";



                    break;



                case "csv": contentType = "application/vnd.msexcel";



                    break;



                case ".xls": contentType = "application/vnd.msexcel";



                    break;



                case ".xlt": contentType = "application/vnd.msexcel";



                    break;



                default: contentType = "application/octet-stream";



                    break;



            }



            HttpContext.Current.Response.ClearContent();

            HttpContext.Current.Response.ClearHeaders();

            HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment; filename= " + DocName);

            HttpContext.Current.Response.ContentType = contentType;



            //Check that the client is connected and has not closed the connection after the request



            if (HttpContext.Current.Response.IsClientConnected)

                HttpContext.Current.Response.BinaryWrite(obj);



            HttpContext.Current.Response.Flush();

            HttpContext.Current.Response.Close();

        }



        catch (Exception ex)

        {

           Response.Write(ex.ToString());

        }

    }