實習狗的每天新知識日常 準備工作: 1.在項目中添加對NPOI的引用,NPOI下載地址:http://npoi.codeplex.com/releases/view/38113 2.NPOI學習系列教程推薦:http://www.cnblogs.com/tonyqus/archive/2009/04 ...
實習狗的每天新知識日常
準備工作:
1.在項目中添加對NPOI的引用,NPOI下載地址:http://npoi.codeplex.com/releases/view/38113
2.NPOI學習系列教程推薦:http://www.cnblogs.com/tonyqus/archive/2009/04/12/1434209.html
NPOI下載,裡面有五個dll,需要引用到你的項目,我這邊用的mvc4+三層的方式架構的項目
我用的工具是(vs2012+sql2014)
準備工作做完,我們開始進入主題
1.前端頁面,代碼:
<div class="filebtn"> @using (Html.BeginForm("importexcel", "foot", FormMethod.Post, new { enctype = "multipart/form-data" })) { <samp>請選擇要上傳的Excel文件:</samp> <span id="txt_Path"></span> <strong>選擇文件<input name="file" type="file" id="file" /></strong>@* @Html.AntiForgeryToken() //防止跨站請求偽造(CSRF:Cross-site request forgery)攻擊 *@<input type="submit" id="ButtonUpload" value="提交" class="offer"/> } </div>excel
2.接下來就是控制器
public class footController : Controller { // // GET: /foot/ private static readonly String Folder = "/files"; public ActionResult excel() { return View(); } /// 導入excel文檔 public ActionResult importexcel() { //1.接收客戶端傳過來的數據 HttpPostedFileBase file = Request.Files["file"]; if (file == null || file.ContentLength <= 0) { return Json("請選擇要上傳的Excel文件", JsonRequestBehavior.AllowGet); } //string filepath = Server.MapPath(Folder); //if (!Directory.Exists(filepath)) //{ // Directory.CreateDirectory(filepath); //} //var fileName = Path.Combine(filepath, Path.GetFileName(file.FileName)); // file.SaveAs(fileName); //獲取一個streamfile對象,該對象指向一個上傳文件,準備讀取改文件的內容 Stream streamfile = file.InputStream; DataTable dt = new DataTable(); string FinName = Path.GetExtension(file.FileName); if (FinName != ".xls" && FinName != ".xlsx") { return Json("只能上傳Excel文檔",JsonRequestBehavior.AllowGet); } else { try { if (FinName == ".xls") { //創建一個webbook,對應一個Excel文件(用於xls文件導入類) HSSFWorkbook hssfworkbook = new HSSFWorkbook(streamfile); dt = excelDAL.ImExport(dt, hssfworkbook); } else { XSSFWorkbook hssfworkbook = new XSSFWorkbook(streamfile); dt = excelDAL.ImExport(dt, hssfworkbook); } return Json("",JsonRequestBehavior.AllowGet); } catch(Exception ex) { return Json("導入失敗 !"+ex.Message, JsonRequestBehavior.AllowGet); } } } }footController.cs
3.業務邏輯層[excelDAL]
using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.Threading.Tasks; using NPOI; using NPOI.SS.UserModel; using NPOI.HSSF.UserModel; using System.Data; using NPOI.XSSF.UserModel; namespace GJL.Compoent { public class excelDAL { ///<summary> /// #region 兩種不同版本的操作excel /// 擴展名*.xlsx /// </summary> public static DataTable ImExport(DataTable dt, XSSFWorkbook hssfworkbook) { NPOI.SS.UserModel.ISheet sheet = hssfworkbook.GetSheetAt(0); System.Collections.IEnumerator rows = sheet.GetRowEnumerator(); for (int j = 0; j < (sheet.GetRow(0).LastCellNum); j++) { dt.Columns.Add(sheet.GetRow(0).Cells[j].ToString()); } while (rows.MoveNext()) { XSSFRow row = (XSSFRow)rows.Current; DataRow dr = dt.NewRow(); for (int i = 0; i < row.LastCellNum; i++) { NPOI.SS.UserModel.ICell cell = row.GetCell(i); if (cell == null) { dr[i] = null; } else { dr[i] = cell.ToString(); } } dt.Rows.Add(dr); } dt.Rows.RemoveAt(0); if (dt!=null && dt.Rows.Count != 0) { for (int i = 0; i < dt.Rows.Count; i++) { string categary = dt.Rows[i]["頁面"].ToString(); string fcategary = dt.Rows[i]["分類"].ToString(); string fTitle = dt.Rows[i]["標題"].ToString(); string fUrl = dt.Rows[i]["鏈接"].ToString(); FooterDAL.Addfoot(categary, fcategary, fTitle, fUrl); } } return dt; } #region 兩種不同版本的操作excel ///<summary> /// 擴展名*.xls /// </summary> public static DataTable ImExport(DataTable dt, HSSFWorkbook hssfworkbook) { // 在webbook中添加一個sheet,對應Excel文件中的sheet,取出第一個工作表,索引是0 NPOI.SS.UserModel.ISheet sheet = hssfworkbook.GetSheetAt(0); System.Collections.IEnumerator rows = sheet.GetRowEnumerator(); for (int j = 0; j < (sheet.GetRow(0).LastCellNum); j++) { dt.Columns.Add(sheet.GetRow(0).Cells[j].ToString()); } while (rows.MoveNext()) { HSSFRow row = (HSSFRow)rows.Current; DataRow dr = dt.NewRow(); for (int i = 0; i < row.LastCellNum; i++) { NPOI.SS.UserModel.ICell cell = row.GetCell(i); if (cell == null) { dr[i] = null; } else { dr[i] = cell.ToString(); } } dt.Rows.Add(dr); } dt.Rows.RemoveAt(0); if (dt != null && dt.Rows.Count != 0) { for (int i = 0; i < dt.Rows.Count; i++) { string categary = dt.Rows[i]["頁面"].ToString(); string fcategary = dt.Rows[i]["分類"].ToString(); string fTitle = dt.Rows[i]["標題"].ToString(); string fUrl = dt.Rows[i]["鏈接"].ToString(); FooterDAL.Addfoot(categary, fcategary, fTitle, fUrl); } } return dt; } #endregion } }excelDAL
public static partial class FooterDAL { /// <summary> /// 添加 /// </summary> /// <param name="id"></param> /// <param name="catgary"></param> /// <param name="fcatgary"></param> /// <param name="fTitle"></param> /// <param name="fUrl"></param> /// <returns></returns> public static int Addfoot(string categary, string fcategary, string fTitle, string fUrl) { string sql = string.Format("insert into Foot (categary,fcategary,fTitle,fUrl)values(@categary,@fcategary,@fTitle,@fUrl)"); SqlParameter[] parm = { new SqlParameter("@categary",categary) ,new SqlParameter("@fcategary",fcategary) ,new SqlParameter("@fTitle",fTitle) ,new SqlParameter("@fUrl",fUrl) }; return new DBHelperSQL<Foot>(CommonTool.dbname).ExcuteSql(sql,parm); } }FooterDAL
//FooterDAL將datatable,就是excel裡面的數據添加到sql資料庫