/// <summary>
/// 将类型转换为Boolean
/// </summary>
/// <param name="obj"></param>
/// <returns></returns>
public static Boolean ToBoolean(object obj)
{
if (ConvertObject.ToString(obj) == "1")
{
return(true);
}
if (ConvertObject.ToString(obj) == "0")
{
return(false);
}
return(ToBoolean(obj, false));
}
/// <summary>
/// 通过Stream获取Datatable
/// </summary>
/// <param name="stream"></param>
/// <param name="fileType">Excel文件类型（xls或xlsx）</param>
/// <param name="sheetName">excel工作薄sheet的名称</param>
/// <param name="isFirstRowColumn">第一行是否是DataTable的列名</param>
/// <returns></returns>
public DataTable ConvertStreamToDataTable(Stream stream, string fileType, string sheetName, bool isFirstRowColumn)
{
IWorkbook workbook = null;
ISheet sheet = null;
DataTable data = new DataTable();
int startRow = 0;
if (fileType == "xlsx")
{
workbook = new XSSFWorkbook(stream);//2007版本
}
else if (fileType == "xls")
{
try
{
workbook = new HSSFWorkbook(stream);//2003版本
}
catch (Exception ex)
{
if (ex.Message.Contains("Office 2007"))
{
throw new Exception("xlsx");
}
else
{
throw ex;
}
}
}
else
{
throw new Exception("Excel文件类型不正确");
}
if (sheetName != "")
{
sheet = workbook.GetSheet(sheetName);
if (sheet == null)
{
//如果没有找到指定的sheetName对应的sheet，则尝试获取第一个sheet
sheet = workbook.GetSheetAt(0);
}
}
else
{
sheet = workbook.GetSheetAt(0);
}
if (sheet != null)
{
IRow firstRow = sheet.GetRow(0);
int cellCount = firstRow.LastCellNum; //一行最后一个cell的编号 即总的列数
if (isFirstRowColumn)
{
for (int i = firstRow.FirstCellNum; i < cellCount; ++i)
{
ICell cell = firstRow.GetCell(i);
if (cell != null)
{
string cellValue = ConvertObject.ToString(cell.StringCellValue);
if (cellValue != null)
{
DataColumn column = new DataColumn(cellValue);
data.Columns.Add(column);
}
}
}
startRow = sheet.FirstRowNum + 1;
}
else
{
startRow = sheet.FirstRowNum;
}
//最后一列的标号
int rowCount = sheet.LastRowNum;
for (int i = startRow; i <= rowCount; ++i)
{
IRow row = sheet.GetRow(i);
if (row == null)
{
continue; //没有数据的行默认是null
}
DataRow dataRow = data.NewRow();
for (int j = row.FirstCellNum; j < cellCount; ++j)
{
if (row.GetCell(j) != null) //同理，没有数据的单元格都默认是null
{
dataRow[j] = row.GetCell(j).ToString();
if (row.GetCell(j).CellType == CellType.Numeric && DateUtil.IsCellDateFormatted(row.GetCell(j)))//如果类型是日期形式的，转成合理的日期字符串
{
dataRow[j] = row.GetCell(j).DateCellValue.ToString();
}
}
}
data.Rows.Add(dataRow);
}
}
return(data);
}