使用Aspose.Cells实现导入导出

本文实例为大家分享了Aspose.Cells实现导入导出的具体代码，供大家参考，具体内容如下

这是自己整理的导入导出类,里面有注释。

using System;
using System.Collections.Generic;
using System.Data;
using System.IO;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using Aspose.Cells;
namespace Lzd.Mvc.EasyUi.Common.ExcelUtil
{
  ///
  /// excel操作基类
  ///
  ///
 public  class BaseExcelUtil
  {
    private Workbook m_Wb = null;

    ///
    /// 生成Excel
    ///
    /// 模板Excel的路径+文件名
    /// Excel文件的字节对象
    public byte[] CreateExcel(string url)
    {
      FileStream fs = null;
      try
      {
        //读取模板Excel文件的中内容
        fs = new FileStream(url, FileMode.Open, FileAccess.Read, FileShare.Read);

        m_Wb = new Workbook();

        m_Wb.Open(fs);

        setValue(m_Wb);

        //转换为字节对象并返回
        return m_Wb.SaveToStream().ToArray();

      }
      catch (Exception ex)
      {
        throw ex;
      }
      finally
      {
        fs.Close();
      }
    }

    ///
    /// 设定Excel中的数据
    /// 数据源为datable类型
    ///
    /// 工作簿
    public virtual void setValue(Workbook wb)
    {
      throw new Exception("The method or operation is not implemented.");
    }

    ///
    /// 读取Excel
    ///
    /// Excel的路径+文件名
    /// Excel文件的字节对象
    public DataTable GetExcel(string url)
    {
      FileStream fs = null;
      try
      {
        //读取Excel文件的中内容
        fs = new FileStream(url, FileMode.Open, FileAccess.Read, FileShare.Read);

        m_Wb = new Workbook();

        m_Wb.Open(fs);

        //设定Excel中的数据
       return  getValue(m_Wb);

      }
      finally
      {
        fs.Close();
      }
    }

    ///
    /// 取得Excel中的数据
    ///
    /// 工作簿
    public virtual DataTable getValue(Workbook wb)
    {
      throw new Exception("The method or operation is not implemented.");
    }
    ///
    /// 设置字符串值
    ///
    ///
    ///
    public void putValue(Cell c, object value)
    {
      try
      {
        if (value == null || object.Equals(value, DBNull.Value) || value.ToString().Trim().Length == 0)
        {

        }
        else
        {
          c.PutValue(value.ToString());
        }
      }
      catch (Exception)
      {
        c.PutValue("--");
      }
    }
    ///
    /// 设置数值值
    ///
    ///
    ///
    public void putValueDouble(Cell c, object value)
    {
      try
      {
        if (value == null || object.Equals(value, DBNull.Value) || value.ToString().Trim().Length == 0)
        {

        }
        else
        {
          c.PutValue(Decimal.Parse(value.ToString()));
        }
      }
      catch (Exception)
      {
        c.PutValue(value.ToString());
      }
    }
    ///
    /// 设置日期值
    ///
    ///
    ///
    public void putDateValue(Cell c, object value)
    {
      try
      {
        if (value == null || object.Equals(value, DBNull.Value) || value.ToString().Trim().Length == 0)
        {

        }
        else
        {
          c.PutValue(DateTime.Parse(value.ToString()));
        }
      }
      catch (Exception)
      {
        c.PutValue(value.ToString());
      }
    }

  }

}

////实现基类

using System;
using System.Collections.Generic;
using System.Data;
using System.Linq;
using System.Reflection;
using System.Text;
using System.Threading.Tasks;
using Aspose.Cells;
namespace Lzd.Mvc.EasyUi.Common.ExcelUtil
{
  ///
  /// Excel帮助类
  ///
  public class ExcelUtil :BaseExcelUtil
  {
    private DataTable dt;
    private string title;

    public ExcelUtil() {

    }

    ///
    /// 从第几行开始读取
    ///
    public int FirstRow { get; set; }
    ///
    /// 从第几列开始读取
    ///
    public int FirstColumns { get; set; }

    ///
    /// excel标题
    ///
    public string Title
    {
      get { return title; }
      set { title = value; }
    }
    private string fileName;

    ///
    /// 文件名
    ///
    public string FileName
    {
      get { return fileName; }
      set { fileName = value; }
    }

    public DataTable Dt
    {
      get { return dt; }
      set { dt = value; }
    }

    public bool Flag
    {
      set;
      get;
    }
   ///
   ///
   ///导出设定值
    public override void setValue(Workbook wb)
    {

      int index = 0;
      Worksheet ws = null;
      int rcount = dt.Rows.Count, columns = dt.Columns.Count;
      if (dt != null && dt.Rows.Count > 0)
      {
        index = wb.Worksheets.AddCopy(0);
        ws = wb.Worksheets[index];
        ws.Name = FileName.Replace(".xls", "");

        try
        {
          putValue(ws.Cells[0, 0], this.title);
          int i = 1;

          for (int j = 0; j < columns; j++)
          {

            putValue(ws.Cells[1, j], dt.Columns[j].ColumnName);
          }

          for (int j = 0; j < rcount; j++)
          {
            i++;
            for (int h = 0; h < columns; h++)
            {

              putValue(ws.Cells[i, h], dt.Rows[j][h].ToString());
            }

          }

          wb.Worksheets.RemoveAt(0);
        }
        catch (Exception ex)
        {
          throw ex;
        }
      }
    }

    ///
    /// 导入excel
    ///
    /// 读取的文件名
    /// 从第几行开始读取
    /// 从第几列开始读取
    ///
    /// 

    public override DataTable getValue(Workbook wb)
    {

      Worksheet sheet = wb.Worksheets[0];
      Cells cells = sheet.Cells;

      return cells.ExportDataTableAsString(FirstRow, FirstColumns, cells.MaxDataRow + 1, cells.MaxDataColumn + 1, true);
    }

  }

}

/////导出调用方法

public ActionResult ToExcel() {
      List list = new List();
      for (int i = 0; i < 100; i++)
      {
        UserInfo info = new UserInfo();
        info.Age = i.ToString();
        info.ID = i;
        info.Name = "姓名" + i;
        list.Add(info);
      }
      ///将list类型转换为datatable
      DataTable dt= DataTableHelper.IListToDataTable(list);
      //实例化帮助类
      ExcelUtil exc = new ExcelUtil();
      exc.Dt = dt;
      exc.FileName = "导出测试.xls";
      exc.Title = "导出测试";
      //需要写入的模板
      string url = Server.MapPath("/Content/Down/template.xls");
      byte[] data = exc.CreateExcel(url);
      //浏览器下载文件
      Response.AppendHeader("Content-Disposition", "attachment; filename=" + exc.FileName);//HttpUtility.UrlEncode(r.FileName, Encoding.UTF8));
      Response.ContentType = "application/ms-excel";
      Response.AddHeader("Content-Length", data.Length.ToString());
      Response.ContentEncoding = System.Text.Encoding.GetEncoding("UTF-8");
      Response.BinaryWrite(data);
      System.Web.HttpContext.Current.ApplicationInstance.CompleteRequest();
      return Content("ss");
    }

///导入调用方法

public ActionResult ImportExcel()
    {
      string url = Server.MapPath("/Content/Down/Import.xls");
      ExcelUtil exc = new ExcelUtil();
      exc.FirstRow = 1;
      exc.FirstColumns = 0;
       DataTable dt= exc.GetExcel(url);

      return Content("ss");
    }

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持我们。