NPOI导入每行带图片的EXCEL
最近做一个EXCEL 导入的功能，导入一些人员的基本信息，其中一项是人员的照片，经查资料发现在EXCEL中照片和单元格之间并无对应的关系，即使照片在某个单元格内，所以在读取的时候照片那一列读出来的全是空，经研究查找后找到了一种解决的方式，通过计算得出照片在EXCEL 中的单元格，大概过程如下：
一、首先引用NPOI相关的dll
二、在程序中添加NPOI相关的命名空间
三、定义照片信息类
public class PicturesInfo
{
public int MinRow { get; set; }
public int MaxRow { get; set; }
public int MinCol { get; set; }
public int MaxCol { get; set; }
public Byte[] PictureData { get; private set; }
public PicturesInfo(int minRow, int maxRow, int minCol, int maxCol, Byte[] pictureData)
{
this.MinRow = minRow;
this.MaxRow = maxRow;
this.MinCol = minCol;
this.MaxCol = maxCol;
this.PictureData = pictureData;
}
}四、计算照片的位置类
public static class NpoiExtend
{
public static List GetAllPictureInfos(this ISheet sheet)
{
return sheet.GetAllPictureInfos(null, null, null, null);
}
public static List GetAllPictureInfos(this ISheet sheet, int? minRow, int? maxRow, int? minCol, int? maxCol, bool onlyInternal = true)
{
if (sheet is HSSFSheet)
{
return GetAllPictureInfos((HSSFSheet)sheet, minRow, maxRow, minCol, maxCol, onlyInternal);
}
else if (sheet is XSSFSheet)
{
return GetAllPictureInfos((XSSFSheet)sheet, minRow, maxRow, minCol, maxCol, onlyInternal);
}
else
{
throw new Exception("未处理类型，没有为该类型添加：GetAllPicturesInfos()扩展方法！");
}
}
private static List GetAllPictureInfos(HSSFSheet sheet, int? minRow, int? maxRow, int? minCol, int? maxCol, bool onlyInternal)
{
List picturesInfoList = new List();
var shapeContainer = sheet.DrawingPatriarch as HSSFShapeContainer;
if (null != shapeContainer)
{
var shapeList = shapeContainer.Children;
foreach (var shape in shapeList)
{
if (shape is HSSFPicture)
{
var picture = (HSSFPicture)shape;
// var anchor = (HSSFClientAnchor)shape;
var anchor = (HSSFClientAnchor)picture.Anchor;
if (IsInternalOrIntersect(minRow, maxRow, minCol, maxCol, anchor.Row1, anchor.Row2, anchor.Col1, anchor.Col2, onlyInternal))
{
picturesInfoList.Add(new PicturesInfo(anchor.Row1, anchor.Row2, anchor.Col1, anchor.Col2, picture.PictureData.Data));
}
}
}
}
return picturesInfoList;
}
private static List GetAllPictureInfos(XSSFSheet sheet, int? minRow, int? maxRow, int? minCol, int? maxCol, bool onlyInternal)
{
List picturesInfoList = new List();
var documentPartList = sheet.GetRelations();
foreach (var documentPart in documentPartList)
{
if (documentPart is XSSFDrawing)
{
var drawing = (XSSFDrawing)documentPart;
var shapeList = drawing.GetShapes();
foreach (var shape in shapeList)
{
if (shape is XSSFPicture)
{
var picture = (XSSFPicture)shape;
var anchor = picture.GetPreferredSize();
if (IsInternalOrIntersect(minRow, maxRow, minCol, maxCol, anchor.Row1, anchor.Row2, anchor.Col1, anchor.Col2, onlyInternal))
{
picturesInfoList.Add(new PicturesInfo(anchor.Row1, anchor.Row2, anchor.Col1, anchor.Col2, picture.PictureData.Data));
}
}
}
}
}
return picturesInfoList;
}
private static bool IsInternalOrIntersect(int? rangeMinRow, int? rangeMaxRow, int? rangeMinCol, int? rangeMaxCol,
int pictureMinRow, int pictureMaxRow, int pictureMinCol, int pictureMaxCol, bool onlyInternal)
{
int _rangeMinRow = rangeMinRow ?? pictureMinRow;
int _rangeMaxRow = rangeMaxRow ?? pictureMaxRow;
int _rangeMinCol = rangeMinCol ?? pictureMinCol;
int _rangeMaxCol = rangeMaxCol ?? pictureMaxCol;
if (onlyInternal)
{
return (_rangeMinRow <= pictureMinRow && _rangeMaxRow >= pictureMaxRow &&
_rangeMinCol <= pictureMinCol && _rangeMaxCol >= pictureMaxCol);
}
else
{
return ((Math.Abs(_rangeMaxRow - _rangeMinRow) + Math.Abs(pictureMaxRow - pictureMinRow) >= Math.Abs(_rangeMaxRow + _rangeMinRow - pictureMaxRow - pictureMinRow)) &&
(Math.Abs(_rangeMaxCol - _rangeMinCol) + Math.Abs(pictureMaxCol - pictureMinCol) >= Math.Abs(_rangeMaxCol + _rangeMinCol - pictureMaxCol - pictureMinCol)));
}
}
} 五、应用
public ActionResult GetTableFromExcel()
{
try
{
HttpFileCollectionBase file = Request.Files;
HttpPostedFileBase fileData = file[0];
if (fileData != null)
{
if (fileData.ContentLength == 0)
{
return Content("{'success':'false','msg':'并无上传的文件'}");
}
}
Stream streamfile = fileData.InputStream;
XSSFWorkbook hssfworkbook = new XSSFWorkbook(streamfile);//2007以上版本
// HSSFWorkbook hssfworkbook = new HSSFWorkbook(streamfile);
NPOI.SS.UserModel.ISheet sheet = hssfworkbook.GetSheetAt(0);
DataTable table = new DataTable();
IRow headerRow = sheet.GetRow(0);//第一行为标题行
int cellCount = headerRow.LastCellNum;//LastCellNum = PhysicalNumberOfCells
int rowCount = sheet.LastRowNum;//LastRowNum = PhysicalNumberOfRows - 1
//handling header.
for (int i = headerRow.FirstCellNum; i < cellCount; i++)
{
DataColumn column = new DataColumn(headerRow.GetCell(i).StringCellValue);
table.Columns.Add(column);
}
for (int i = (sheet.FirstRowNum + 1); i <= rowCount; i++)
{
IRow row = sheet.GetRow(i);
DataRow dataRow = table.NewRow();
if (row != null)
{
for (int j = row.FirstCellNum; j < cellCount; j++)
{
if (row.GetCell(j) != null)
dataRow[j] = GetCellValue(row.GetCell(j));
}
}
table.Rows.Add(dataRow);
}
List identify_list = new List();
for (int i = 0; i < table.Rows.Count; i++)
{
BS_Identify identify = new BS_Identify();
identify.XM = table.Rows[i][0].ToString();
//读取除了照片列以外的数据
identify_list.Add(identify);
//myUpLoadBLL.ForDownLoad(table.Rows[i][1].ToString(), table.Rows[i][2].ToString(),Convert.ToBoolean( table.Rows[i][3]));
}
List picture_list = new List();
picture_list = NpoiExtend.GetAllPictureInfos(sheet, 1, rowCount, 0, cellCount, false);
foreach (var a in picture_list)
{
identify_list[a.MinRow-1].Img = a.PictureData;
}
//操作读取的数据
return Content("{'success':'true','msg':''}");
}
catch(Exception ex)
{
return Content("{'success':'false','msg':"+ex.Message);
}
}
///
/// 根据Excel列类型获取列的值
///
/// Excel列
///