实习狗的每天新知识日常
准备工作:
1.在项目中添加对NPOI的引用，NPOI下载地址：http://npoi.codeplex.com/releases/view/38113
2.NPOI学习系列教程推荐：http://www.cnblogs.com/tonyqus/archive/2009/04/12/1434209.html
NPOI下载，里面有五个dll，需要引用到你的项目，我这边用的mvc4+三层的方式架构的项目
我用的工具是(vs2012+sql2014)
准备工作做完，我们开始进入主题
1.前端页面，代码:
<div class="filebtn">
@using (Html.BeginForm("importexcel", "foot", FormMethod.Post, new { enctype = "multipart/form-data" }))
{
<samp>请选择要上传的Excel文件：</samp>
<span id="txt_Path"></span>
<strong>选择文件<input name="file" type="file" id="file" /></strong>@*
@Html.AntiForgeryToken() //防止跨站请求伪造(CSRF:Cross-site request forgery)攻击
*@<input type="submit" id="ButtonUpload" value="提交" class="offer"/>
}
</div>
excel
2.接下来就是控制器
public class footController : Controller
{
//
// GET: /foot/
private static readonly String Folder = "/files";
public ActionResult excel()
{
return View();
} /// 导入excel文档
public ActionResult importexcel()
{
//1.接收客户端传过来的数据
HttpPostedFileBase file = Request.Files["file"];
if (file == null || file.ContentLength <= )
{
return Json("请选择要上传的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);
//获取一个streamfile对象，该对象指向一个上传文件，准备读取改文件的内容
Stream streamfile = file.InputStream;
DataTable dt = new DataTable();
string FinName = Path.GetExtension(file.FileName);
if (FinName != ".xls" && FinName != ".xlsx")
{
return Json("只能上传Excel文档",JsonRequestBehavior.AllowGet);
}
else
{
try
{
if (FinName == ".xls")
{
//创建一个webbook，对应一个Excel文件(用于xls文件导入类)
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("导入失败 ！"+ex.Message, JsonRequestBehavior.AllowGet);
}
} } }
footController.cs
3.业务逻辑层[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 两种不同版本的操作excel
/// 扩展名*.xlsx
/// </summary>
public static DataTable ImExport(DataTable dt, XSSFWorkbook hssfworkbook)
{
NPOI.SS.UserModel.ISheet sheet = hssfworkbook.GetSheetAt();
System.Collections.IEnumerator rows = sheet.GetRowEnumerator();
for (int j = ; j < (sheet.GetRow().LastCellNum); j++)
{
dt.Columns.Add(sheet.GetRow().Cells[j].ToString());
}
while (rows.MoveNext())
{
XSSFRow row = (XSSFRow)rows.Current;
DataRow dr = dt.NewRow();
for (int i = ; 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();
if (dt!=null && dt.Rows.Count != )
{
for (int i = ; i < dt.Rows.Count; i++)
{
string categary = dt.Rows[i]["页面"].ToString();
string fcategary = dt.Rows[i]["分类"].ToString();
string fTitle = dt.Rows[i]["标题"].ToString();
string fUrl = dt.Rows[i]["链接"].ToString();
FooterDAL.Addfoot(categary, fcategary, fTitle, fUrl);
}
}
return dt;
} #region 两种不同版本的操作excel
///<summary>
/// 扩展名*.xls
/// </summary>
public static DataTable ImExport(DataTable dt, HSSFWorkbook hssfworkbook)
{
// 在webbook中添加一个sheet,对应Excel文件中的sheet,取出第一个工作表，索引是0
NPOI.SS.UserModel.ISheet sheet = hssfworkbook.GetSheetAt();
System.Collections.IEnumerator rows = sheet.GetRowEnumerator();
for (int j = ; j < (sheet.GetRow().LastCellNum); j++)
{
dt.Columns.Add(sheet.GetRow().Cells[j].ToString());
}
while (rows.MoveNext())
{
HSSFRow row = (HSSFRow)rows.Current;
DataRow dr = dt.NewRow();
for (int i = ; 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();
if (dt != null && dt.Rows.Count != )
{
for (int i = ; i < dt.Rows.Count; i++)
{
string categary = dt.Rows[i]["页面"].ToString();
string fcategary = dt.Rows[i]["分类"].ToString();
string fTitle = dt.Rows[i]["标题"].ToString();
string fUrl = dt.Rows[i]["链接"].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将datatable,就是excel里面的数据添加到sql数据库