.NET Web项目Excel导入与导出
作者：互联网
这是基于EntityFrameWork的.NET Web项目，View层使用JQuery借助 Formdata和Ajax实现Excel导入和导出功能
文件导入
View层：
<input id="importFile" name="excelFile" type="file" value="选择要导入的文件"> //选择文件按钮
<input type="button" id="saveExcelData" value="导入银行流水" /> //触发文件导入功能的按钮
这里借用Formdata传递file对象，实际上传递的是一个二进制文件
$("#saveExcelData").click(function () {
var formData = new FormData();
var name = $("#importFile").val();
console.log($("#importFile")[0].files[0])
formData.append("file", $("#importFile")[0].files[0]);
formData.append("name", name); //可以使用formData.append()传递多个参数
console.log(formData);
if (isNull(name)) {
alert("未选择导入文件！");
return;
}
//var xhr = new XMLHttpRequest();
//xhr.open("post","/计提费用表/UploadExcel");
//xhr.setRequestHeader("Content-Type","application/x-www-form-urlencoded");
//xhr.send(formData);
$.ajax({
url: "/计提费用表/UploadExcel",
datatype: "json",
enctype: "multipart/form-data",
data: formData,
type: "post",
// 告诉jQuery不要去处理发送的数据
processData: false,
// 告诉jQuery不要去设置Content-Type请求头
contentType: false,
success: function (result) {
alert(result);
location.href = document.URL;
}
});
});
控制器接口：
//Excel上传
public string UploadExcel()
{
var tran = db.Database.BeginTransaction();
try
{
Stream uploadStream = null;
//获取前台传递的File
HttpPostedFileBase postFileBase = Request.Files["file"];
uploadStream = postFileBase.InputStream;
//设置上传文件名称默认为 银行流水+时间戳
string fileName = string.Format("银行流水-{0}{1}", DateTime.Now.ToString("yyyyMMddHHmmss"), Path.GetExtension(postFileBase.FileName));
//获取文件类型
var dd = Path.GetExtension(postFileBase.FileName);
//获取项目本地存储路径
string baseUrl = Server.MapPath("~");
//设置文件存储地址（此项目的Upload文件夹下）
string uploadPath = baseUrl + @"Upload\";
//判断此文件夹是否存在，没有则新建该文件夹
if (!Directory.Exists(uploadPath)) Directory.CreateDirectory(uploadPath);
//获取文件绝对路径 路径+文件名
var filename = Path.Combine(uploadPath, fileName);
//如果已经存在该文件，删除
if (System.IO.File.Exists(filename))
{
System.IO.File.Delete(filename);
}
//在本地创建该文件
using (FileStream fs1 = new FileStream(filename, FileMode.Create, FileAccess.ReadWrite))
{
int bufferLen = 10240;
byte[] buffer = new byte[bufferLen];
int contentLen = 0;
while ((contentLen = uploadStream.Read(buffer, 0, bufferLen)) != 0)
{
fs1.Write(buffer, 0, bufferLen);
fs1.Flush();
}
}
//把Excel文件写入到DataTable中
DataTable dt = ExcelToDataTable(filename, true);
var _rows = dt.AsEnumerable().AsQueryable();
//然后后面操作_rows写库什么的就不写了，毕竟每个人的数据都不一样
if (_rows.Count() == 0)
{
return "文件内容为空!";
}
DateTime lastData;
DateTime firstData;
//获取文件第一条数据和最后一条数据的交易日期，判断一共上传了几个月的流水
firstData = Convert.ToDateTime(_rows.FirstOrDefault()[0]);
lastData = Convert.ToDateTime(_rows.ToList()[_rows.Count() - 1][0]);
//第一个日期的第一天
DateTime firstDayOfminMonth = new DateTime(firstData.Year, firstData.Month, 1);
//第一个日期的最后一天
DateTime lastDayOfminMonth = firstDayOfminMonth.AddMonths(1).AddDays(-1);
//判断两个日期相差几个月
int months = (lastData.Year - firstData.Year) * 12 + (lastData.Month - firstData.Month);
db.SaveChanges();
tran.Commit();
db.Dispose();
return "导入成功！";
}
catch (Exception ex)
{
tran.Rollback();
return ex.Message + "请联系开发人员！";
}
}
这里有一个Excel转成DateTable对象的方法
这里会安装一些Nuget包，按照提示安装就好了，但是安装完 之后可能会遇到这个错误
这是因为 ICSharpCode.SharpZipLib 和 NPOI.OpenXml4Net 版本冲突，两者最好升级到最新版本冲突就会消失了
/// <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 static 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 = System.IO.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)
{
//读取第一个sheet，当然也可以循环读取每个sheet
sheet = workbook.GetSheetAt(0);
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)
{
//获取各个列内的值
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 || cell.CellType.ToString() == "Blank")
{
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.ToString("yyyy-MM-dd");
else
dataRow[j] = cell.NumericCellValue;
break;
case CellType.String:
dataRow[j] = cell.StringCellValue;
break;
}
}
}
dataTable.Rows.Add(dataRow);
}
}
}
}
}
return dataTable;
}
catch (Exception e)
{
if (fs != null)
{
fs.Close();
}
throw e;
}
}
导出Excel
view：
<input type="button" id="btnExport" value="导出计提费用核算表" />
$("#btnExport").click(function () {
$.ajax({
url: "/计提费用表/导出计提费用核算表",
type: "get",
data: { "productId": $("#productId").val(), "sysDate1": $("#sysDate1").val(), "sysDate2": $("#sysDate2").val() },
datatype: "json",
success: function (data) {
if (data) {
if (data.length > 100)
location.href = "/Account/AuthorizeFail";
else
location.href = "../../Excels/Common/" + data;
}
else {
alert("没有查询到任何数据.");
}
}
});
});
接口：
//Excel导出
public string 导出计提费用核算表(string productId, string sysDate1, string sysDate2)
{
DateTime dt1;
DateTime dt2;
// var data = new 计提费用公共类().获取计提费用核算数据集1(productId, account, sysDate1, sysDate2, false).OrderBy(c => c.流水变动日期).ToList();
var data = db.计提费用核算表.OrderBy(x => x.产品名称).ThenBy(x => x.流水变动日期).ThenBy(x => x.计提起始日).ThenBy(x => x.计提截止日).AsEnumerable();
if (!string.IsNullOrEmpty(productId))
{
data = data.Where(x => x.产品名称 == productId).OrderBy(x => x.产品名称).ThenBy(x => x.流水变动日期).ThenBy(x => x.计提起始日).ThenBy(x => x.计提截止日).AsEnumerable();
}
if (!string.IsNullOrEmpty(sysDate1))
{
DateTime.TryParse(sysDate1, out dt1);
data = data.Where(x => x.流水变动日期 >= dt1).OrderBy(x => x.产品名称).ThenBy(x => x.流水变动日期).ThenBy(x => x.计提起始日).ThenBy(x => x.计提截止日).AsEnumerable();
}
if (!string.IsNullOrEmpty(sysDate2))
{
DateTime.TryParse(sysDate2, out dt2);
data = data.Where(x => x.流水变动日期 <= dt2).OrderBy(x => x.产品名称).ThenBy(x => x.流水变动日期).ThenBy(x => x.计提起始日).ThenBy(x => x.计提截止日).AsEnumerable();
}
if (data.Count() == 0)
return "没有查询到相关数据";
//导出文件的名称
string FileName = "计提费用核算表.xls";
//获取要输出的列数
PropertyInfo[] propertys = data.ToList()[0].GetType().GetProperties();
IWorkbook wb = new HSSFWorkbook();
//设置不同的列的格式(日期，金额，数字等)
ICellStyle ContentStyle = WriteExcel.Getcellstyle(wb, stylexls.默认, true);
ICellStyle BoldStyle = WriteExcel.Getcellstyle(wb, stylexls.加粗居中, true);
ICellStyle MoneyStyle = WriteExcel.Getcellstyle(wb, true, false, 10, HorizontalAlignment.Center, VerticalAlignment.Center, BorderStyle.Thin, BorderStyle.Thin, BorderStyle.Thin, BorderStyle.Thin, stylexls.数字);
ICellStyle BoldMoneyStyle = WriteExcel.Getcellstyle(wb, true, true, 10, HorizontalAlignment.Center, VerticalAlignment.Center, BorderStyle.Thin, BorderStyle.Thin, BorderStyle.Thin, BorderStyle.Thin, stylexls.数字);
ICellStyle StrStyle = WriteExcel.Getcellstyle(wb, true, false, 10, HorizontalAlignment.Center, VerticalAlignment.Center, BorderStyle.Thin, BorderStyle.Thin, BorderStyle.Thin, BorderStyle.Thin);
ICellStyle NonBoldStyle = WriteExcel.Getcellstyle(wb, false, true, 10, HorizontalAlignment.Right, VerticalAlignment.Center, BorderStyle.None, BorderStyle.None, BorderStyle.None, BorderStyle.None);
ICellStyle TitleStyle = WriteExcel.Getcellstyle(wb, false, false, 24, HorizontalAlignment.Center, VerticalAlignment.Center, BorderStyle.None, BorderStyle.None, BorderStyle.None, BorderStyle.None);
int rowindex = 0;
int ColumnLength = propertys.Count();
//sheet页名称
string Sheet = "计提费用核算表";
ISheet sh = wb.CreatePrintSetupSheet(Sheet);
IRow row = sh.CreateRow(rowindex);
ICell icelltop = row.CreateCell(0);
//设置标题
sh.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(rowindex, rowindex, 0, ColumnLength - 4));
row.Height = 26 * 26;
WriteExcel.WriteCell(row, 0, TitleStyle, Sheet);
rowindex++;
//设置表头列明
row = sh.CreateRow(rowindex);
row.Height = 25 * 20;
int k = 0;
foreach (PropertyInfo pi in propertys)
{
if (pi.Name == "id"|| pi.Name == "申购或赎回" || pi.Name == "isMaintain")
{
continue;
}
icelltop = row.CreateCell(k);
icelltop.CellStyle = WriteExcel.Getcellstyle(wb, stylexls.加粗居中, true);
icelltop.CellStyle.VerticalAlignment = VerticalAlignment.Center;
icelltop.SetCellValue(pi.Name);
sh.SetColumnWidth(k, 25 * 206);
k++;
}
rowindex++;
var loopDataTime = data.OrderBy(x => x.流水变动日期);
//查询结果的流水起始变动日期
DateTime minDateTime = loopDataTime.FirstOrDefault().流水变动日期;
//当月第一天
DateTime firstDayOfminMonth = new DateTime(minDateTime.Year, minDateTime.Month, 1);
//当月最后一天
DateTime lastDayOfminMonth = firstDayOfminMonth.AddMonths(1).AddDays(-1);
//查询结果的流水变动结束的日期
DateTime maxDateTime = loopDataTime.ToList()[data.Count() - 1].流水变动日期;
//两个日期相差几个月，就生成sheet表里几段 数据集
int months = (maxDateTime.Year - minDateTime.Year) * 12 + (maxDateTime.Month - minDateTime.Month);
//用于判断是否应该加入统计行
int newRowIndex = 2;
//用于判断应该写入Excel的第几行
int addIndex = 2;
int newDataCount = 0;
//第几月
string thisMonth;
for (int i = 0; i <= months; i++)
{
//当前月第一天
DateTime thisMonthFirstDay = firstDayOfminMonth.AddMonths(i);
thisMonth = thisMonthFirstDay.Month.ToString() + "月合计";
//当前月第最后一天
DateTime thisMonthLastDay = lastDayOfminMonth.AddMonths(i);
//当月所有产品数据
var newData = data.Where(x => x.流水变动日期 >= thisMonthFirstDay && x.流水变动日期 <= thisMonthLastDay).OrderBy(x => x.产品名称).OrderBy(x => x.流水变动日期).AsEnumerable();
if (newData.Count() > 0)
{
//同一月份有几个产品 就生成几个数据集
var 产品名称集合 = newData.OrderBy(x => x.产品名称).Select(x => x.产品名称).Distinct().AsEnumerable();
foreach (var 产品名称 in 产品名称集合)
{
var 单个产品 = newData.Where(x => x.产品名称 == 产品名称).OrderBy(x => x.流水变动日期).AsEnumerable();
newDataCount = newRowIndex + 单个产品.Count();
int 规模变动合计 = 0;
int 计提天数合计 = 0;
decimal 管理费合计 = 0;
decimal 托管费合计 = 0;
decimal 行管费合计 = 0;
decimal 计提费用合计 = 0;
string 规模变动;
foreach (var 计提记录 in 单个产品)
{
int columnindex = 0;
row = sh.CreateRow(addIndex);
row.Height = 25 * 20;
规模变动 = 计提记录.申购或赎回 == "赎回" ? "-" + 计提记录.规模变动.ToString() : 计提记录.规模变动.ToString();
WriteExcel.WriteCell(row, columnindex++, StrStyle, 计提记录.流水变动日期.ToString("yyyy-MM-dd"));
WriteExcel.WriteCell(row, columnindex++, StrStyle, 计提记录.产品名称);
WriteExcel.WriteCell(row, columnindex++, StrStyle, 规模变动);
WriteExcel.WriteCell(row, columnindex++, StrStyle, 计提记录.计提起始日.ToString("yyyy-MM-dd"));
WriteExcel.WriteCell(row, columnindex++, StrStyle, 计提记录.计提截止日.ToString("yyyy-MM-dd"));
WriteExcel.WriteCell(row, columnindex++, StrStyle, 计提记录.计提天数);
WriteExcel.WriteCell(row, columnindex++, StrStyle, 计提记录.计提规模);
WriteExcel.WriteCell(row, columnindex++, StrStyle, 计提记录.管理费率);
WriteExcel.WriteCell(row, columnindex++, StrStyle, 计提记录.托管费率);
WriteExcel.WriteCell(row, columnindex++, StrStyle, 计提记录.行管费率);
WriteExcel.WriteCell(row, columnindex++, MoneyStyle, 计提记录.管理费);
WriteExcel.WriteCell(row, columnindex++, MoneyStyle, 计提记录.托管费);
WriteExcel.WriteCell(row, columnindex++, MoneyStyle, 计提记录.行管费);
WriteExcel.WriteCell(row, columnindex++, MoneyStyle, 计提记录.计提费用合计);
规模变动合计 = 计提记录.申购或赎回 == "申购" ? 规模变动合计 + 计提记录.规模变动 : 规模变动合计 - 计提记录.规模变动;
计提天数合计 = 计提天数合计 + 计提记录.计提天数;
管理费合计 = 管理费合计 + 计提记录.管理费;
托管费合计 = 托管费合计 + 计提记录.托管费;
行管费合计 = 行管费合计 + 计提记录.行管费;
计提费用合计 = 管理费合计 + 托管费合计 + 行管费合计;
newRowIndex++;
addIndex++;
//生成最后一行统计行
if (newRowIndex == newDataCount)
{
columnindex = 0;
row = sh.CreateRow(addIndex);
row.Height = 25 * 20;
WriteExcel.WriteCell(row, columnindex++, StrStyle, thisMonth);
WriteExcel.WriteCell(row, columnindex++, StrStyle, null);
WriteExcel.WriteCell(row, columnindex++, StrStyle, 规模变动合计);
WriteExcel.WriteCell(row, columnindex++, StrStyle, null);
WriteExcel.WriteCell(row, columnindex++, StrStyle, null);
WriteExcel.WriteCell(row, columnindex++, StrStyle, 计提天数合计);
WriteExcel.WriteCell(row, columnindex++, StrStyle, null);
WriteExcel.WriteCell(row, columnindex++, StrStyle, null);
WriteExcel.WriteCell(row, columnindex++, StrStyle, null);
WriteExcel.WriteCell(row, columnindex++, StrStyle, null);
WriteExcel.WriteCell(row, columnindex++, MoneyStyle, 管理费合计);
WriteExcel.WriteCell(row, columnindex++, MoneyStyle, 托管费合计);
WriteExcel.WriteCell(row, columnindex++, MoneyStyle, 行管费合计);
WriteExcel.WriteCell(row, columnindex++, MoneyStyle, 计提费用合计);
}
}
//空格2行生成下个月份的数据集
addIndex++;
addIndex++;
addIndex++;
addIndex++;
}
}
else
{
continue;
}
}
string excelpath = Server.MapPath(@"~/Excels/Common/");
if (!Directory.Exists(excelpath))
Directory.CreateDirectory(excelpath);
using (FileStream fs = System.IO.File.OpenWrite(excelpath + FileName))
{
wb.Write(fs); //向打开的这个xls文件中写入mySheet表并保存。
}
Logger.WriteLogs(User.Identity.Name, "计提费用核算表导出", FundClear.Models.操作类型.导出);
return "../../Excels/Common/" + FileName;
}
这里写了一个WriteExcell方法，因为数据类型不一样，对这个方法写了一些重载方法
/// <summary>
/// 创建并填写单元格
/// </summary>
/// <param name="row">单元行</param>
/// <param name="ColumnIndex">单元格索引值</param>
/// <param name="CellStyle">单元格样式</param>
/// <param name="Value">值</param>
public static void WriteCell(IRow row, int ColumnIndex, ICellStyle CellStyle, string Value)
{
ICell icelltop = row.CreateCell(ColumnIndex);
icelltop.CellStyle = CellStyle;
icelltop.SetCellValue(Value);
}
标签：Web,columnindex,++,Excel,计提,WriteExcel,WriteCell,NET,row 来源： https://blog.csdn.net/qq_36730649/article/details/97612262