erp/Web/plug/uploadFileOss.aspx.cs

using BizCom;
using NPOI.SS.Formula.Functions;
using SiteCore;
using SiteCore.taobao;
using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Net;
using System.Text;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using Utils.ImageUtils;

public partial class plug_uploadFileOss : System.Web.UI.Page
{
    protected void Page_Load(object sender, EventArgs e)
    {
        string file_url = Request["url"];
        try
        {
            if (file_url == null)
            {
                Response.Write("{\"res\":\"0\",\"msg\":\"错误的下载访问!\"}");
                Response.End();
                return;
            }
            Uri uri = new Uri(file_url);

            // 获取路径中的文件名（包含后缀）
            string fileName = System.IO.Path.GetFileName(uri.AbsolutePath);
            string filePath = "D://temp/";
            WebClient webClient = new WebClient();
            if (!Directory.Exists(filePath))
            {
                Directory.CreateDirectory(filePath);
            }
            filePath += fileName;
            webClient.DownloadFile(file_url, filePath);
            jiemiUtils.ossFileDecrypt(filePath);
            FileStream fs = new FileStream(filePath, FileMode.Open);
            byte[] bytes = new byte[(int)fs.Length];
            fs.Read(bytes, 0, bytes.Length);
            fs.Close();
            Response.Clear();
            //
            Response.ClearContent();
            Response.ClearHeaders();

            Response.ContentType = "application/octet-stream";
            //通知浏览器下载文件而不是打开\\fileDownload=true; path=/
            Response.AddHeader("Set-Cookie", "fileDownload=true; path=/;");
            //Response.AddHeader("Cache-Control", "no-cache, no-store, must-revalidate");
            Response.AddHeader("Content-Disposition", "attachment; filename=" + HttpUtility.UrlEncode(fileName, System.Text.Encoding.UTF8));
            Response.AddHeader("Content-Length", bytes.Length.ToString());
            Response.AddHeader("Access-Control-Expose-Headers", "Content-Disposition");
            Response.BinaryWrite(bytes);
            Response.Flush();
            Response.End();

            File.Delete(filePath);
            return;
        }
        catch (Exception ex)
        {
            Response.Write("{\"res\":\"0\",\"msg\":\"发生错误!" + ex.Message + "!\"}");
            Response.End();
            return;
        }

    }




}