/// <summary>
/// 导出矿山列表
/// </summary>
/// <returns></returns>
/// <param name="isAll">是否导出全部数据</param>
public static void GetExportList(List <HotelInfo> HotelInfo, string path)
{
try {
var dateTime = DateTime.Now.ToString("yyyy-MM-dd");
//设置导出格式
ExcelConfig excelconfig = new ExcelConfig();
excelconfig.Title = "同程酒店" + dateTime;
excelconfig.TitleFont = "微软雅黑";
excelconfig.TitlePoint = 25;
excelconfig.IsAllSizeColumn = true;
excelconfig.FileName = path + "同程酒店" + dateTime + ".xlsx";
//每一列的设置,没有设置的列信息，系统将按datatable中的列名导出
List <ColumnEntity> listColumnEntity = new List <ColumnEntity>();
excelconfig.ColumnEntity = listColumnEntity;
ColumnEntity columnentity = new ColumnEntity();
excelconfig.ColumnEntity.Add(new ColumnEntity()
{
Column = "Id", ExcelColumn = "序号"
});
excelconfig.ColumnEntity.Add(new ColumnEntity()
{
Column = "HotelName", ExcelColumn = "酒店名称"
});
excelconfig.ColumnEntity.Add(new ColumnEntity()
{
Column = "HotelId", ExcelColumn = "酒店ID"
});
excelconfig.ColumnEntity.Add(new ColumnEntity()
{
Column = "Date", ExcelColumn = "日期"
});
excelconfig.ColumnEntity.Add(new ColumnEntity()
{
Column = "Bed", ExcelColumn = "房型名称"
});
excelconfig.ColumnEntity.Add(new ColumnEntity()
{
Column = "Price", ExcelColumn = "含税价"
});
excelconfig.ColumnEntity.Add(new ColumnEntity()
{
Column = "Breakfast", ExcelColumn = "早餐",
});
excelconfig.ColumnEntity.Add(new ColumnEntity()
{
Column = "Count", ExcelColumn = "库存"
});
excelconfig.ColumnEntity.Add(new ColumnEntity()
{
Column = "CrawlerTime", ExcelColumn = "爬取时间",
});
DataTable dtSource = FillDataTable(HotelInfo);
//调用导出方法
ExcelHelper.MemoryStream(dtSource, excelconfig);
}
catch (Exception ex) {
string log = DateTime.Now.ToString("yyyy-MM-dd HH:mm:ss") + ex.ToString();
Console.WriteLine(log);
}
}
/// <summary>
/// DataTable导出到Excel的MemoryStream Export()
/// </summary>
/// <param name="dtSource">DataTable数据源</param>
/// <param name="excelConfig">导出设置包含文件名、标题、列设置</param>
public static void MemoryStream(DataTable dtSource, ExcelConfig excelConfig)
{
try {
int colint = 0;
bool cellValue = false;
for (int i = 0; i < dtSource.Columns.Count;)
{
DataColumn column = dtSource.Columns[i];
if (excelConfig.ColumnEntity[colint].Column != column.ColumnName)
{
dtSource.Columns.Remove(column.ColumnName);
}
else
{
i++;
colint++;
}
}
XSSFWorkbook workbook = new XSSFWorkbook();
XSSFSheet sheet = workbook.CreateSheet() as XSSFSheet;
int rowIndex = 0;
//判断是否已存在文件
if (File.Exists(excelConfig.FileName))
{
FileStream fs = new FileStream(@excelConfig.FileName, FileMode.Open, FileAccess.ReadWrite);
workbook = new XSSFWorkbook(fs);
fs.Close();
sheet = workbook.GetSheetAt(0) as XSSFSheet;
cellValue = true;
rowIndex = sheet.LastRowNum + 1;
}
#region 设置标题样式
ICellStyle headStyle = workbook.CreateCellStyle();
int[] arrColWidth = new int[dtSource.Columns.Count];
string[] arrColName = new string[dtSource.Columns.Count]; //列名
ICellStyle[] arryColumStyle = new ICellStyle[dtSource.Columns.Count]; //样式表
headStyle.Alignment = HorizontalAlignment.Center; // ------------------
if (excelConfig.Background != new Color())
{
if (excelConfig.Background != new Color())
{
headStyle.FillPattern = FillPattern.SolidForeground;
// headStyle.FillForegroundColor = GetXLColour(workbook, excelConfig.Background);
}
}
IFont font = workbook.CreateFont();
font.FontHeightInPoints = excelConfig.TitlePoint;
if (excelConfig.ForeColor != new Color())
{
//font.Color = GetXLColour(workbook, excelConfig.ForeColor);
}
font.Boldweight = 700;
headStyle.SetFont(font);
#endregion
#region 列头及样式
ICellStyle cHeadStyle = workbook.CreateCellStyle();
cHeadStyle.Alignment = HorizontalAlignment.Center; // ------------------
IFont cfont = workbook.CreateFont();
cfont.FontHeightInPoints = excelConfig.HeadPoint;
cHeadStyle.SetFont(cfont);
#endregion
#region 设置内容单元格样式
foreach (DataColumn item in dtSource.Columns)
{
ICellStyle columnStyle = workbook.CreateCellStyle();
columnStyle.Alignment = HorizontalAlignment.Center;
arrColWidth[item.Ordinal] = Encoding.GetEncoding(936).GetBytes(item.ColumnName.ToString()).Length;
arrColName[item.Ordinal] = item.ColumnName.ToString();
if (excelConfig.ColumnEntity != null)
{
ColumnEntity columnentity = excelConfig.ColumnEntity.Find(t => t.Column == item.ColumnName);
if (columnentity != null)
{
arrColName[item.Ordinal] = columnentity.ExcelColumn;
if (columnentity.Width != 0)
{
arrColWidth[item.Ordinal] = columnentity.Width;
}
if (columnentity.Background != new Color())
{
if (columnentity.Background != new Color())
{
columnStyle.FillPattern = FillPattern.SolidForeground;
//columnStyle.FillForegroundColor = GetXLColour(workbook, columnentity.Background);
}
}
if (columnentity.Font != null || columnentity.Point != 0 || columnentity.ForeColor != new Color())
{
IFont columnFont = workbook.CreateFont();
columnFont.FontHeightInPoints = 10;
if (columnentity.Font != null)
{
columnFont.FontName = columnentity.Font;
}
if (columnentity.Point != 0)
{
columnFont.FontHeightInPoints = columnentity.Point;
}
if (columnentity.ForeColor != new Color())
{
// columnFont.Color = GetXLColour(workbook, columnentity.ForeColor);
}
columnStyle.SetFont(font);
}
columnStyle.Alignment = getAlignment(columnentity.Alignment);
}
}
arryColumStyle[item.Ordinal] = columnStyle;
}
if (excelConfig.IsAllSizeColumn)
{
#region 根据列中最长列的长度取得列宽
for (int i = 0; i < dtSource.Rows.Count; i++)
{
for (int j = 0; j < dtSource.Columns.Count; j++)
{
if (arrColWidth[j] != 0)
{
int intTemp = Encoding.GetEncoding(936).GetBytes(dtSource.Rows[i][j].ToString()).Length;
if (intTemp > arrColWidth[j])
{
arrColWidth[j] = intTemp;
}
}
}
}
#endregion
}
#endregion
#region 填充数据
#endregion
ICellStyle dateStyle = workbook.CreateCellStyle();
IDataFormat format = workbook.CreateDataFormat();
dateStyle.DataFormat = format.GetFormat("yyyy-mm-dd");
foreach (DataRow row in dtSource.Rows)
{
#region 新建表，填充表头，填充列头，样式
if (rowIndex == 0)
{
if (rowIndex != 0)
{
//sheet = workbook.CreateSheet();
}
#region 表头及样式
{
if (excelConfig.Title != null)
{
IRow headerRow = sheet.CreateRow(0);
if (excelConfig.TitleHeight != 0)
{
headerRow.Height = (short)(excelConfig.TitleHeight * 20);
}
headerRow.HeightInPoints = 25;
headerRow.CreateCell(0).SetCellValue(excelConfig.Title);
headerRow.GetCell(0).CellStyle = headStyle;
sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(0, 0, 0, dtSource.Columns.Count - 1)); // ------------------
}
}
#endregion
#region 列头及样式
{
IRow headerRow = sheet.CreateRow(1);
#region 如果设置了列标题就按列标题定义列头，没定义直接按字段名输出
foreach (DataColumn column in dtSource.Columns)
{
headerRow.CreateCell(column.Ordinal).SetCellValue(arrColName[column.Ordinal]);
headerRow.GetCell(column.Ordinal).CellStyle = cHeadStyle;
//设置列宽
//sheet.SetColumnWidth(column.Ordinal, (arrColWidth[column.Ordinal] + 1) * 256);
if (arrColWidth[column.Ordinal] > 255)
{
arrColWidth[column.Ordinal] = 254;
}
else
{
sheet.SetColumnWidth(column.Ordinal, (arrColWidth[column.Ordinal] + 1) * 256);
}
}
#endregion
}
#endregion
rowIndex = 2;
}
#endregion
#region 填充内容
IRow dataRow = sheet.CreateRow(rowIndex);
foreach (DataColumn column in dtSource.Columns)
{
ICell newCell = dataRow.CreateCell(column.Ordinal);
newCell.CellStyle = arryColumStyle[column.Ordinal];
string drValue = row[column].ToString();
//排列序号
if (column.ColumnName == "Id")
{
drValue = (rowIndex - 1).ToString();
}
if (drValue.Length >= 255)
{
drValue = drValue.Remove(255, drValue.Length - 255);
}
SetCell(newCell, dateStyle, column.DataType, drValue);
}
#endregion
rowIndex++;
}
sheet.ForceFormulaRecalculation = true;
//创建或打开文件填充数据
using (MemoryStream ms = new MemoryStream())
{
workbook.Write(ms);
byte[] data = ms.ToArray();
using (FileStream fs1 = File.OpenWrite(@excelConfig.FileName))
{
fs1.Write(data, 0, data.Length);
fs1.Flush();
fs1.Close();
Console.WriteLine("下载完成！");
}
ms.Flush();
}
}
catch (Exception e) {
Console.WriteLine("下载失败,休眠2S！========================>" + e.ToString());
Thread.Sleep(2000);
MemoryStream(dtSource, excelConfig);
}
}
