如何解决“从服务器收到的重复标头”下载文件时出错 [英] How to resolve "Duplicate headers received from the server" error when download a file

问题描述

嗨朋友们，



在我的网络应用程序中，用户只需在.pdf，.rtf，.doc，.docx格式上传他们的简历即可申请职业部分。



我已将数据库和文件中的文件路径保存在Application文件夹中。



然后我显示在管理部分的网格视图中应用用户的所有信息，我也在网格中给出了一个下载按钮，在gridview Rowcommand事件我有以下代码用于恢复文件下载...

Hi friends,

In my web application User apply in Careers section with uploading their resume in .pdf, .rtf, .doc, .docx formats only.

I have saved the file path in database and file in Application folder.

Then I have displayed all information of applied user in gridview in Admin section, I have given a download button in grid also, At gridview Rowcommand event i have following code for resume file download...

protected void gdUser_RowCommand(object sender, GridViewCommandEventArgs e)
    {    
        if (e.CommandName == "downLoad")
        {
            DataTable dt = new DataTable();
            Int32 id = Convert.ToInt32(e.CommandArgument);
            p.Admin_Flag = 8;
            p.Id = id;
            p.DateFrom_Sorting = System.DateTime.Now;
            p.DateTo_Sorting = System.DateTime.Now;
            dt = b.Job_Applied_GridShow(p);
            if (dt.Rows.Count > 0)
            {
                string filepath = "~/" + dt.Rows[0]["file_path"].ToString();


                //.......................................................
                string path = Server.MapPath(filepath);
                //get physical file path from server 
                string name = Path.GetFileName(path);
                //get file name 
                string ext = Path.GetExtension(path);
                //get file extension 
                string type = "";
                // set known types based on file extension  
                if (ext != null)
                {
                    switch (ext.ToLower())
                    {
                        // case ".htm":
                        //  case ".html":
                        // type = "text/HTML";
                        // break;
                        // case ".txt":
                        //  type = "text/plain";
                        //  break;
                        // case ".GIF":
                        // type = "image/GIF";
                        //  break;
                        case ".pdf":
                            type = "Application/pdf";
                            break;
                        case ".doc":
                            type = "Application/msword";
                            break;
                        case ".docx":
                            type = "Application/msword";
                            break;
                        case ".rtf":
                            type = "Application/msword";
                            break;
                        Default:
                            type = "";
                            break;
                    }
                }
                Response.AppendHeader("content-disposition", "attachment; filename=" + name);
                if (type != "")
                {
                    Response.ContentType = type;
                    Response.WriteFile(path);
                    Response.End(); //give POP to user for file downlaod
                }
            }
        }
    }

文件已下载，但在某些情况下，chrome会出现错误信息从服务器收到的重复标题和文件无法下载。



请帮助我....

谢谢

File is downloaded but in some case chrome gives an error like "Duplicate headers received from the server" and file can't be download.

Please help me....
Thanks

推荐答案

请参阅 - 从服务器收到的重复标题 [ ^ ]。



遵循解决方案。

Refer - Duplicate headers received from server[^].

Follow the solution.

尝试添加Response.Clear（）

Try adding a Response.Clear()

Response.Clear();
Response.AppendHeader("content-disposition", "attachment; filename=" + name);

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