.net 批量導出文件，以ZIP壓縮方式導出

 1. 首先Nuget          ICSharpCode.SharpZipLib

 <script type="text/javascript"> $(function () { $("#OutPutLink").click(function () { // 單擊下文件時  $.ajax({ // 先判斷條件時間內沒有文件  url: "/Home/ExistsFile?statTime=" + $("#statTime").val() + "&endTime=" + $("#endTime").val(), type: "Get", success: function (data) { if (data == "Exists") { // 若是有 就下載  window.location.href = "/Home/OutputFile?statTime=" + $("#statTime").val() + "&endTime=" + $("#endTime").val(); } else alert("該時間區域內無文件"); } }); }); }); </script>

/// <summary> /// 驗證該時間段是否有文件 /// </summary> /// <param name="statTime">開始時間</param> /// <param name="endTime">結束時間</param> /// <returns></returns> public string ExistsFile(DateTime statTime, DateTime endTime) { DateTime sTime = DateTime.Parse(statTime.ToString("yyyy-MM-dd") + " 00:00:00"); DateTime eTime = DateTime.Parse(endTime.ToString("yyyy-MM-dd") + " 23:59:59"); DirectoryInfo TheFolder = new DirectoryInfo(Server.MapPath("~/Content/ExcelFile")); //遍歷文件夾下的文件 List<string> listFJName = new List<string>();//保存附件名字 foreach (FileInfo NextFile in TheFolder.GetFiles()) { string fileType = Path.GetExtension(NextFile.FullName).ToString().ToLower(); if (fileType == ".xls" || fileType == ".xlsx") { string fileDate = NextFile.Name.Substring(0, 8); DateTime dtime = DateTime.ParseExact(fileDate, "yyyyMMdd", null); if (dtime >= sTime && dtime <= eTime) { listFJName.Add(NextFile.Name); } } } if (listFJName.Count > 0) return "Exists"; return "NotExists"; } /// <summary> /// 執行將文件壓縮下載 /// </summary> /// <param name="statTime"></param> /// <param name="endTime"></param> public void OutputFile(DateTime statTime,DateTime endTime) { DateTime sTime = DateTime.Parse(statTime.ToString("yyyy-MM-dd") + " 00:00:00"); DateTime eTime = DateTime.Parse(endTime.ToString("yyyy-MM-dd") + " 23:59:59"); DirectoryInfo TheFolder = new DirectoryInfo(Server.MapPath("~/Content/ExcelFile")); //遍歷文件夾下的文件 List<string> listFJ = new List<string>();//保存附件路徑 List<string> listFJName = new List<string>();//保存附件名字 foreach (FileInfo NextFile in TheFolder.GetFiles()) { string fileType = Path.GetExtension(NextFile.FullName).ToString().ToLower(); if (fileType == ".xls" || fileType == ".xlsx") { string fileDate = NextFile.Name.Substring(0, 8); DateTime dtime = DateTime.ParseExact(fileDate, "yyyyMMdd", null); if (dtime >= sTime && dtime <= eTime) { listFJ.Add(Server.MapPath("~/Content/ExcelFile/") + NextFile.Name); listFJName.Add(NextFile.Name); } } } if (listFJ.Count > 0 && listFJName.Count > 0) { string time = DateTime.Now.Ticks.ToString(); ZipFileMain(listFJ.ToArray(), listFJName.ToArray(), Server.MapPath("~/Content/ExcelFile/" + time + ".zip"), 9);//壓縮文件 DownloadFile(Server.UrlEncode("附件.zip"), Server.MapPath("~/Content/ExcelFile/" + time + ".zip"));//下載文件  } } /// <summary> /// 下載文件 /// </summary> /// <param name="fileName"></param> /// <param name="filePath"></param> private void DownloadFile(string fileName, string filePath) { FileInfo fileInfo = new FileInfo(filePath); Response.Clear(); Response.ClearContent(); Response.ClearHeaders(); Response.AddHeader("Content-Disposition", "attachment;filename=" + fileName); Response.AddHeader("Content-Length", fileInfo.Length.ToString()); Response.AddHeader("Content-Transfer-Encoding", "binary"); Response.ContentType = "application/octet-stream"; Response.ContentEncoding = System.Text.Encoding.GetEncoding("gb2312"); Response.WriteFile(fileInfo.FullName); Response.Flush(); System.IO.File.Delete(filePath);//刪除已下載文件  Response.End(); } /// <summary> /// 壓縮文件 /// </summary> /// <param name="fileName">要壓縮的全部文件（徹底路徑)</param> /// <param name="fileName">文件名稱</param> /// <param name="name">壓縮後文件路徑</param> /// <param name="Level">壓縮級別</param> public void ZipFileMain(string[] filenames, string[] fileName, string name, int Level) { ZipOutputStream s = new ZipOutputStream(System.IO.File.Create(name)); Crc32 crc = new Crc32(); //壓縮級別 s.SetLevel(Level); // 0 - store only to 9 - means best compression try { int m = 0; foreach (string file in filenames) { //打開壓縮文件 FileStream fs = System.IO.File.OpenRead(file);//文件地址 byte[] buffer = new byte[fs.Length]; fs.Read(buffer, 0, buffer.Length); //創建壓縮實體 ZipEntry entry = new ZipEntry(fileName[m].ToString());//原文件名 //時間 entry.DateTime = DateTime.Now; //空間大小 entry.Size = fs.Length; fs.Close(); crc.Reset(); crc.Update(buffer); entry.Crc = crc.Value; s.PutNextEntry(entry); s.Write(buffer, 0, buffer.Length); m++; } } catch { throw; } finally { s.Finish(); s.Close(); } }