Response下载问题，本地可以，但服务器不行，为什么啊

[yifan112]

我用下面些的代码下载，本地测试时可以，但服务器旧不行不行，不报错，就是在打开的状态。



String savePath = Server.MapPath("ExcelModel") + "\\Tonnage_Origin_Destination" + Guid.NewGuid().ToString() + ".xls"; // excel文件名（含路径）(服务器)
string fileExcel = "Tonnage_Origin_Destination" + DateTime.Now.Ticks.ToString() + ".xls"; // excel文件名(本地)

if (System.IO.File.Exists(savePath)) // 保存excel文件到本地，并删除服务器的excel临时文件
{
Response.Clear();
Response.AppendHeader("Content-Disposition", "attachment;filename=" + fileExcel);
Response.ContentType = "application/vnd.ms-excel";

Response.WriteFile(savePath);
Response.Flush();
System.IO.File.Delete(savePath);
Response.End();

[孟子E章]

System.IO.File.Delete(savePath);先去掉，数据还没有发送就删除了吧？
你可以进行定期删除

[子夜__]

#region 文件下载
       public bool DownLoadFile(string localPath, string hostURL, int byteCount, string userID, long cruuent)
       {
           
           bool result = true;
           
           
           string tmpURL = hostURL;
          
           byteCount = byteCount * 1024;
           hostURL = tmpURL + "&npos=" + cruuent.ToString();
           
           System.IO.FileStream fs;  
           fs = new FileStream(localPath, FileMode.OpenOrCreate);
           if (cruuent > 0)
           {
               //偏移指针
               fs.Seek(cruuent, System.IO.SeekOrigin.Current); 
           }


           System.Net.HttpWebRequest request = (System.Net.HttpWebRequest)System.Net.HttpWebRequest.Create(hostURL);
           if (cruuent > 0)
           {
               request.AddRange(Convert.ToInt32(cruuent));    //设置Range值
           }

           try
           {
               //向服务器请求，获得服务器回应数据流
               System.IO.Stream ns = request.GetResponse().GetResponseStream();

               byte[] nbytes = new byte[byteCount];
               int nReadSize = 0;
               nReadSize = ns.Read(nbytes, 0, byteCount);
              
               while (nReadSize > 0)
               {
                   fs.Write(nbytes, 0, nReadSize);
                   nReadSize = ns.Read(nbytes, 0, byteCount);
                  
               }
               fs.Close();
               ns.Close();
           }
           catch(Exception ex)
           {
               LOG.Error("下载" + localPath + "的时候失败！" + "原因是:" + ex.Message);
               fs.Close();
               result = false;
           }
           return result;     
       }
       #endregion