这个是记录，单元格的图片。 直接上代码，直接新建一个 net core api 解决方案，引用一下nuget包。本地创建一个.xlsx 格式的excel文件 using ICSharpCode.SharpZipLib.Zip; using Microsoft.AspNetCore.Mvc;
这个是记录，单元格的图片。
直接上代码，直接新建一个 net core api 解决方案，引用一下nuget包。本地创建一个 .xlsx 格式的excel文件
using ICSharpCode.SharpZipLib.Zip; using Microsoft.AspNetCore.Mvc; using NPOI.HSSF.UserModel; using NPOI.SS.UserModel; using NPOI.XSSF.UserModel; using System.Data; using System.Xml; namespace ExcelOption.Controllers { [ApiController] [Route("[controller]")] public class ImportExcelController : ControllerBase { private readonly Microsoft.AspNetCore.Hosting.IHostingEnvironment _hostingEnvironment; public ImportExcelController(Microsoft.AspNetCore.Hosting.IHostingEnvironment hostingEnvironment) { _hostingEnvironment = hostingEnvironment; } [HttpGet(Name = "dele")] public bool dele() { string zipFileName = "filezip" + ".zip"; string xlsxFileName = "filexlsx" + ".xlsx"; var mapPath = _hostingEnvironment.ContentRootPath; //业务逻辑处理完了就把原来的文件和解压的文件夹删除 Directory.Delete(mapPath + @"\" + "filezip", true); System.IO.File.Delete(mapPath + @"\" + xlsxFileName); //File.Delete(mapPath + "\\" + xlsxFileName); System.IO.File.Delete(mapPath + @"\" + zipFileName); return true; } [HttpPost(Name = "ImportExcel_Img")] public bool ImportExcel_Img(IFormFileCollection files) { if (files.Count > 0) { var file = files[0]; //读取导入的文件类型 var fileExt = file.FileName.Substring(file.FileName.LastIndexOf('.')).ToLower(); if (!fileExt.Equals(".xlsx")) { //提示文件类型不正确 return false; } //转换保存zip string zipFileName = "filezip" + ".zip"; string xlsxFileName = "filexlsx" + ".xlsx"; var mapPath = _hostingEnvironment.ContentRootPath; //保存xlsx到服务器 using (var stream = new FileStream(mapPath + xlsxFileName, FileMode.OpenOrCreate, FileAccess.ReadWrite)) { file.CopyToAsync(stream); } //保存zip到服务器 using (var stream = new FileStream(mapPath + zipFileName, FileMode.OpenOrCreate, FileAccess.ReadWrite)) { file.CopyToAsync(stream); } var dt = ExcelHelper.ExcelToDataTable(mapPath + xlsxFileName); //解压，如果解压成功则根据xml处理 (应为方便我就放在ExcelHelper里面了) if (UnZipFile(mapPath + zipFileName, out string path)) { //excel 图片信息 List<o_ExcelImgModel> o_ExcelImgModelList = new List<o_ExcelImgModel>(); //图片路径文件夹 var mediaFolderPath = path + @"xl\media"; //判断是否存在此文件夹如果有则处理（如果没有图片他是不会有这个文件夹的） if (System.IO.Directory.Exists(mediaFolderPath)) { //解压成功获取xml 节点做处理 var exclNode = GetXmlExclNodeList(path); var pictNode = GetXmlPictNodeList(path); //获取图片信息与地址 foreach (var nl in exclNode) { XmlElement sondNode = (XmlElement)nl; XmlNodeList descendDodeList = sondNode.ChildNodes; XmlNodeList picNodeList = descendDodeList[0].ChildNodes; XmlNodeList nvPicPrNodeList = picNodeList[0].ChildNodes; XmlElement cNvPrElement = (XmlElement)nvPicPrNodeList.Item(0); string name = cNvPrElement.GetAttribute("name").ToString(); XmlNodeList blipFillNodeList = picNodeList[1].ChildNodes; XmlElement picElement = (XmlElement)blipFillNodeList.Item(0); string id = picElement.GetAttribute("r:embed").ToString(); foreach (XmlNode xn in pictNode) { XmlElement xe = (XmlElement)xn; if (xe.GetAttribute("Id").ToString() == id) { var pathOfPicture = xe.GetAttribute("Target").ToString().Replace("..", "").Replace("/", @"\"); pathOfPicture = path + @"xl\" + pathOfPicture; o_ExcelImgModelList.Add(new o_ExcelImgModel() { ID = id, Name = name, PathOfPicture = pathOfPicture }); break; } } } //图片对应dt的哪一列，存到dt然后再循环dt去处理（这个是小编的思维，如果有更好的做法可以随缘发挥） foreach (var item in o_ExcelImgModelList) { //item.PathOfPicture 图片路径取到了，此时你可以存储了 } } //现在dt某一列存放了图片的绝对路径就可以通过table去处理了 //循环表插入数据及上传 foreach (DataRow item in dt.Rows) { //此时你excel转换的 dataTable表的图片字段的 值是："_xlfn.DISPIMG(\"ID_CD49305586E940EF8F78CD3B54A4BCD3\",1)" item["用户名"].ToString(); //"zhao1" //var kkl= item["IMG"].ToString(); // "_xlfn.DISPIMG(\"ID_CD49305586E940EF8F78CD3B54A4BCD3\",1)" var breakApart = item["IMG"].ToString().Split('\\', '"')[1]; var imgPath= o_ExcelImgModelList.FirstOrDefault(x => x.Name == breakApart); //获取图片然后做上传逻辑，这个自己实现我就不多讲了 } } else { //解压时报直接返回，这个返回啥类型或者啥数据自己定义就好我这边demo 随缘来个bool意思下 return false; } //业务逻辑处理完了就把原来的文件和解压的文件夹删除 Directory.Delete(mapPath + "\\" + "filezip", true); System.IO.File.Delete(mapPath + "\\" + xlsxFileName); //File.Delete(mapPath + "\\" + xlsxFileName); System.IO.File.Delete(mapPath + "\\" + zipFileName); } return true; } public static string MidStrEx(string sourse, string startstr, string endstr) { string result = string.Empty; int startindex, endindex; try { startindex = sourse.IndexOf(startstr); if (startindex == -1) return result; string tmpstr = sourse.Substring(startindex + startstr.Length); endindex = tmpstr.IndexOf(endstr); if (endindex == -1) return result; result = tmpstr.Remove(endindex); } catch (Exception ex) { Console.Write("MidStrEx Err:" + ex.Message); } return result; } /// <summary> /// Xml图片表格位置及路径ID /// </summary> private const string _XmlExcel = @"xl\cellimages.xml"; /// <summary> /// Xml图片路径 /// </summary> private const string _XmlPict = @"xl\_rels\cellimages.xml.rels"; /// <summary> /// 获取图片路径 Xml节点 /// </summary> /// <param name="path">解压后的文件夹路径</param> /// <returns></returns> private XmlNodeList GetXmlPictNodeList(string path) { XmlDocument doc = new XmlDocument(); doc.Load(path + _XmlPict); XmlNode root = doc.DocumentElement; return root.ChildNodes; } /// <summary> /// 获取图片表格位置及路径ID Xml节点 /// </summary> /// <param name="path">解压后的文件夹路径</param> /// <returns></returns> private XmlNodeList GetXmlExclNodeList(string path) { XmlDocument doc = new XmlDocument(); doc.Load(path + _XmlExcel); XmlNode root = doc.DocumentElement; return root.ChildNodes; } /// <summary> /// 解压文件 /// </summary> /// <param name="zipFilePath">压缩文件路径</param> /// <param name="path">返回压缩文件夹路径</param> /// <param name="unZipDir">解压文件存放路径,为空时默认与压缩文件同一级目录下，跟压缩文件同名的文件夹</param> /// <returns></returns> private bool UnZipFile(string zipFilePath, out string path, string unZipDir = null) { if (zipFilePath == string.Empty) { path = null; return false; } if (!System.IO.File.Exists(zipFilePath)) { path = null; return false; } //解压文件夹为空时默认与压缩文件同一级目录下，跟压缩文件同名的文件夹 if (string.IsNullOrWhiteSpace(unZipDir)) unZipDir = zipFilePath.Replace(Path.GetFileName(zipFilePath), Path.GetFileNameWithoutExtension(zipFilePath)); if (!unZipDir.EndsWith("\\")) unZipDir += "\\"; if (!Directory.Exists(unZipDir)) Directory.CreateDirectory(unZipDir); try { using (ZipInputStream s = new ZipInputStream(System.IO.File.OpenRead(zipFilePath))) { ZipEntry theEntry; while ((theEntry = s.GetNextEntry()) != null) { string directoryName = Path.GetDirectoryName(theEntry.Name); string fileName = Path.GetFileName(theEntry.Name); if (directoryName.Length > 0) { Directory.CreateDirectory(unZipDir + directoryName); } if (!directoryName.EndsWith("\\")) directoryName += "\\"; if (fileName != String.Empty) { using (FileStream streamWriter = System.IO.File.Create(unZipDir + theEntry.Name)) { int size = 2048; byte[] data = new byte[2048]; while (true) { size = s.Read(data, 0, data.Length); if (size > 0) { streamWriter.Write(data, 0, size); } else { break; } } } } } } } catch { path = null; return false; } path = unZipDir; return true; } } /// <summary> /// excel 图片信息 /// </summary> public class o_ExcelImgModel { /// <summary> /// ID /// </summary> public string ID { get; set; } /// <summary> /// 上传图片生成的id /// </summary> public string Name { get; set; } /// <summary> /// 图片文件绝对路径 /// </summary> public string PathOfPicture { get; set; } } public class ExcelHelper { private static IWorkbook workbook = null; private static FileStream fs = null; /// <summary> /// 将excel中的数据导入到DataTable中 /// </summary> /// <param name="fileName">excel文件路径</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>返回的DataTable</returns> public static DataTable ExcelToDataTable(string fileName, string sheetName = null, bool isFirstRowColumn = true) { ISheet sheet = null; DataTable data = new DataTable(); int startRow = 0; try { fs = new FileStream(fileName, FileMode.Open, FileAccess.Read); if (fileName.IndexOf(".xlsx") > 0) // 2007版本 workbook = new XSSFWorkbook(fs); else if (fileName.IndexOf(".xls") > 0) // 2003版本 workbook = new HSSFWorkbook(fs); if (sheetName != null) { 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 = cell.StringCellValue; if (cellValue != null) { DataColumn column = new DataColumn(cellValue); data.Columns.Add(column); } } } startRow = sheet.FirstRowNum + 1; } else { for (int i = firstRow.FirstCellNum; i < cellCount; i++) { DataColumn column = new DataColumn(i.ToString()); data.Columns.Add(column); } 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(); } data.Rows.Add(dataRow); } } return data; } catch (Exception ex) { Console.WriteLine("Exception: " + ex.Message); return null; } } } }
简单记录一下，有问题的，可以留言，看到就回复
相信自己，一切皆有可能！