Excel导出数据添加超链接,打开本地图片

 //将DataTable导出到Excel,并为其中一列添加超链接,点击链接打开本地图片
 public static bool Create(DataTable dt, string filePath, bool IsOverWrite = true, bool IsAppendTitle = true, string[] Headers = null, string fileName = "", string blobUrl = "", bool isLinux = false, string contaner = "", string fileUrl = "")
        {
            try
            {
                dt ??= new DataTable();
                //创建Excel文件的对象
                var book = new HSSFWorkbook();
                //添加一个sheet
                var sheet1 = book.CreateSheet("Sheet1");

                #region //书写标题
                if (IsAppendTitle)
                {
                    if (Headers == null || Headers.Length == 0) { Headers = dt.GetColumnNames().ToArray(); }

                    //给sheet1添加第一行的头部标题
                    var row1 = sheet1.CreateRow(0);

                    for (var i = 0; i < Headers.Length; i++)
                    {
                        row1.CreateCell(i).SetCellValue(Headers[i]);
                    }
                }
                #endregion

                #region //填充数据
                var k = IsAppendTitle ? 1 : 0;
                for (var i = 0; i < dt.Rows.Count; i++)
                {
                    //创建数据行
                    var rowtemp = sheet1.CreateRow(k);
                    rowtemp.CreateCell(0).SetCellValue((k).ToString());
                    k++;

                    //填充数据
                    for (var j = 0; j < dt.Columns.Count; j++)
                    {
                        var value = dt.Rows[i][j].ToString();
                        var cell = rowtemp.CreateCell(j);
                        var name = dt.Columns[j].ColumnName;
　　　　　　　　　　　　　　 //需要添加超链接的列
                        if (name == "FILEPATH")
                        {
　　　　　　　　　　　　　　　　 //网络图片下载到本地
                            value = DownlodImg(value);
　　　　　　　　　　　　　　　　　//添加超链接
                            var link = new HSSFHyperlink(HyperlinkType.File) { Address = value };
                            cell.Hyperlink = link;
                        }
                        cell.SetCellValue(value);

                    }
                }
                #endregion
                var file = new FileInfo(DoPath.GetFullPath(filePath + fileName));
                if (file.Exists && !IsOverWrite)
                {
                    file.Delete();
                }
                #region //写入文件

                using var ms = new MemoryStream();
                book.Write(ms);
                ms.Seek(0, SeekOrigin.Begin);

                using var fileStream = new FileStream(file.FullName, FileMode.OpenOrCreate, System.IO.FileAccess.ReadWrite);
                var bytes = new byte[ms.Length];
                ms.Read(bytes, 0, (int)ms.Length);
                fileStream.Write(bytes, 0, bytes.Length);
                fileStream.Close();
                ms.Close();

                #endregion

                file.Refresh();
                return file.Exists;

            }
            catch (Exception ex)
            {
                Console.WriteLine(ex);
                return false;
            }
        }

//网络图片下载到本地
public static string DownlodImg(string imagePath)
        {
            var localPath = @"\ticket\image\";
            var filePath = localPath;// AppDomain.CurrentDomain.BaseDirectory + @"";
            try
            {
                var name = imagePath.TrimStart('/').Replace("\\", "/");
                var fileUrl = "图片网络地址";
                var request = WebRequest.Create(fileUrl);
                var response = request.GetResponse();
                var reader = response.GetResponseStream();
                var file = new FileInfo(DoPath.GetFullPath(filePath));
                if (!Directory.Exists(filePath))
                {
                    Directory.CreateDirectory(filePath);
                }
                filePath += imagePath[(imagePath.LastIndexOf(@"/", StringComparison.Ordinal) + 1)..] + ".jpg";
                var writer = new FileStream(filePath, FileMode.OpenOrCreate, FileAccess.Write);

                var buff = new byte[1024];
                var c = 0; //实际读取的字节数
                while (reader != null && (c = reader.Read(buff, 0, buff.Length)) > 0)
                {
                    writer.Write(buff, 0, c);
                }

                writer.Close();
                writer.Dispose();
                if (reader != null)
                {
                    reader.Close();
                    reader.Dispose();
                }

                response.Close();
            }
            catch (Exception ex)
            {
                return "";
            }

            return @"..\" + filePath;
        }

 

文件夹结构

 

 

 

 

 

点击excel中的图片链接会自动打开文件夹中的图片