这几天正好用到上传Excel,并根据Excel中的数据做相应的处理,故整理以备用。
用到的资源:
(1)NOPI 2.2.0.0 可自己官网下载,也可点击:http://pan.baidu.com/s/1b1EMdg
(2)用到一些常见处理文件的公共方法类,可以添加到项目中:http://pan.baidu.com/s/1bJpHuQ
如过上述连接因故无法使用,可在评论留下邮箱,我打包发送过去,如有更好的建议,欢迎指导。
后台的提示方法ShowMsgHelper,根据自己的改写即可。
前台代码:
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<!DOCTYPE html>
< html xmlns = "http://www.w3.org/1999/xhtml" >
< head runat = "server" >
< meta http-equiv = "Content-Type" content = "text/html; charset=utf-8" />
< title >导入EXCEL,生成DataTable</ title >
< script src = "../../Themes/Scripts/jquery-1.8.2.min.js" ></ script >
< link href = "/Themes/Styles/Site.css" rel = "external nofollow" rel = "stylesheet" type = "text/css" />
< script src = "/Themes/Scripts/FunctionJS.js" type = "text/javascript" ></ script >
< script type = "text/javascript" >
$(document).ready(function () {
$("#Import").click(function () {
var filename = $("#FileUpload1").val();
if (filename == '') {
alert('请选择上传的EXCEL文件');
return false;
}
else {
var exec = (/[.]/.exec(filename)) ? /[^.]+$/.exec(filename.toLowerCase()) : '';
if (!(exec == "xlsx" || exec == "xls")) {
alert("文件格式不对,请上传Excel文件!");
return false;
}
}
return true;
});
});
</ script >
</ head >
< body >
< form id = "form1" runat = "server" >
< div >
< asp:FileUpload ID = "FileUpload1" runat = "server" />< asp:Button ID = "Import" runat = "server" Text = "导入" OnClick = "ImpClick" />
</ div >
</ form >
</ body >
</ html >
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后台代码;
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protected void ImpClick( object sender, EventArgs e)
{
try
{
#region 校验
var fileName = this .FileUpload1.FileName;
if ( string .IsNullOrWhiteSpace(fileName))
{
//提示信息
ShowMsgHelper.Alert( "请选择上传Excel文件" );
return ;
}
//获取上传文件扩展名称
if (!(fileName.IndexOf( ".xlsx" ) > 0 || fileName.IndexOf( ".xls" ) > 0))
{
ShowMsgHelper.Alert( "上传文件格式不正确,请核对!" );
return ;
}
#endregion
#region 将Excel文件上传到服务器上临时文件夹中
//临时文件夹,根目录下/Upload/tmp/,根据自己配置选择
string path = Server.MapPath( "~/" ) + "Upload\\tmp\\" ;
string retStr=UploadHelper.FileUpload(path, this .FileUpload1);
if (!retStr.Equals( "上传成功" )) {
ShowMsgHelper.Alert(retStr);
return ;
}
#endregion
#region 读取Excel文件第一个表获取内容并转换成DataTable,删除临时文件,也可以自己加时间戳,维护处理
DataTable dt = this .ExcelToDataTable(path + this .FileUpload1.FileName, true );
if (dt == null ) {
ShowMsgHelper.Alert_Error( "获取失败" );
return ;
}
//示例:获取dt中的值
string test = dt.Rows[0][ "name" ].ToString();
string test2 = dt.Rows[1][ "class" ].ToString();
//删除临时文件
DirFileHelper.DeleteFile( "Upload\\tmp\\" + fileName);
#endregion
}
catch (Exception ex) {
throw ex;
}
}
/// <summary>
/// 将excel导入到datatable
/// </summary>
/// <param name="filePath">excel路径</param>
/// <param name="isColumnName">第一行是否是列名</param>
/// <returns>返回datatable</returns>
public DataTable ExcelToDataTable( string filePath, bool isColumnName)
{
DataTable dataTable = null ;
FileStream fs = null ;
DataColumn column = null ;
DataRow dataRow = null ;
IWorkbook workbook = null ;
ISheet sheet = null ;
IRow row = null ;
ICell cell = null ;
int startRow = 0;
try
{
using (fs = File.OpenRead(filePath))
{
// 2007版本
if (filePath.IndexOf( ".xlsx" ) > 0)
workbook = new XSSFWorkbook(fs);
// 2003版本
else if (filePath.IndexOf( ".xls" ) > 0)
workbook = new HSSFWorkbook(fs);
if (workbook != null )
{
sheet = workbook.GetSheetAt(0); //读取第一个sheet,当然也可以循环读取每个sheet
dataTable = new DataTable();
if (sheet != null )
{
int rowCount = sheet.LastRowNum; //总行数
if (rowCount > 0)
{
IRow firstRow = sheet.GetRow(0); //第一行
int cellCount = firstRow.LastCellNum; //列数
//构建datatable的列
if (isColumnName)
{
startRow = 1; //如果第一行是列名,则从第二行开始读取
for ( int i = firstRow.FirstCellNum; i < cellCount; ++i)
{
cell = firstRow.GetCell(i);
if (cell != null )
{
if (cell.StringCellValue != null )
{
column = new DataColumn(cell.StringCellValue);
dataTable.Columns.Add(column);
}
}
}
}
else
{
for ( int i = firstRow.FirstCellNum; i < cellCount; ++i)
{
column = new DataColumn( "column" + (i + 1));
dataTable.Columns.Add(column);
}
}
//填充行
for ( int i = startRow; i <= rowCount; ++i)
{
row = sheet.GetRow(i);
if (row == null ) continue ;
dataRow = dataTable.NewRow();
for ( int j = row.FirstCellNum; j < cellCount; ++j)
{
cell = row.GetCell(j);
if (cell == null )
{
dataRow[j] = "" ;
}
else
{
//CellType(Unknown = -1,Numeric = 0,String = 1,Formula = 2,Blank = 3,Boolean = 4,Error = 5,)
switch (cell.CellType)
{
case CellType.Blank:
dataRow[j] = "" ;
break ;
case CellType.Numeric:
short format = cell.CellStyle.DataFormat;
//对时间格式(2015.12.5、2015/12/5、2015-12-5等)的处理
if (format == 14 || format == 31 || format == 57 || format == 58)
dataRow[j] = cell.DateCellValue;
else dataRow[j] = cell.NumericCellValue;
break ;
case CellType.String:
dataRow[j] = cell.StringCellValue;
break ;
}
}
}
dataTable.Rows.Add(dataRow);
}
}
}
}
}
return dataTable;
}
catch (Exception)
{
if (fs != null )
{
fs.Close();
}
return null ;
}
}
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以上就是本文的全部内容,希望本文的内容对大家的学习或者工作能带来一定的帮助,同时也希望多多支持服务器之家!
原文链接:http://www.cnblogs.com/MichaelWillLee/p/6633674.html