Question

我正在为Sharepoint编写一个应用程序，它在功能区上实现了一个按钮，可以将多个文件下载为zip ...

一切顺利，一切顺利......但当我尝试使用Chrome或Firefox下载zip时，他们什么都不做..

我的代码是：

private void WriteStreamToResponse(MemoryStream ms)
    {
        if (ms.Length > 0)
        {
            string filename = DateTime.Now.ToFileTime().ToString() + ".zip";
            Response.Clear();
            Response.ClearHeaders();
            Response.ClearContent();
            Response.ContentType = "application/zip"; //also tried application/octect and application/x-zip-compressed
            Response.AddHeader("Content-Length", ms.Length.ToString());
            Response.AddHeader("Content-Disposition", "attachment; filename=" + filename);

            byte[] buffer = new byte[65536];
            ms.Position = 0;
            int num;
            do
            {
                num = ms.Read(buffer, 0, buffer.Length);
                Response.OutputStream.Write(buffer, 0, num);
            }

            while (num > 0);

            Response.Flush();
        }
    }

Answer 1

删除Content-Length并在代码中使用Flush（）然后使用End（），不要在代码末尾使用Close（），在声明所有内容之前可以使用它。当你不知道文件类型是什么时，通常会使用八位字节流，所以如果你知道文件类型是什么，请远离它。使用application / zip作为Content-Disposition。

       string filename = DateTime.Now.ToFileTime().ToString() + ".zip";
        Response.Clear();
        Response.BufferOutput = false;
        Response.ClearHeaders();
        Response.ClearContent();
        Response.ContentType = "application/x-zip-compressed"; //also tried application/octect and application/x-zip-compressed         
        Response.AddHeader("Content-Disposition", "attachment; filename=" + filename);

        byte[] buffer = new byte[65536];
        ms.Position = 0;
        int num;
        do
        {
            num = ms.Read(buffer, 0, buffer.Length);
            Response.OutputStream.Write(buffer, 0, num);
        }

        while (num > 0);

        Response.Flush();
        Response.End();

Answer 2

您是否尝试Application/octet-stream作为MIME类型？

或

private void WriteStreamToResponse(MemoryStream ms)
{
    if (ms.Length > 0)
    {
        byte[] byteArray = ms.ToArray();
        ms.Flush();
        ms.Close();

        string filename = DateTime.Now.ToFileTime().ToString() + ".zip";
        Response.BufferOutput = true;
        Response.Clear();
        Response.ClearHeaders();
        Response.ClearContent();
        Response.ContentType = "application/octet-stream";
        Response.AddHeader("Content-Length", ms.Length.ToString());
        Response.AddHeader("Content-Disposition", "attachment; filename=" + filename);

        Response.BinaryWrite(byteArray);
        Response.End();

    }
}

使用Firefox和Chrome在响应中输入Zip内容

2 个答案: