C# Excel轉換為Json

 

 demo：https://files.cnblogs.com/files/guxingy/Excel%E8%BD%AC%E6%8D%A2%E4%B8%BAJson%E5%AF%B9%E8%B1%A1.rar

不太會用博客

 

待轉換的Excel格式

 

轉換后的JSON格式：

 

 Excel轉換類：

public class OperationExcel
{        
    /// <summary>
    /// Excel 轉換為 Datatable
    /// </summary>
    /// <param name="sheetNum">工作表索引</param>
    /// <param name="isFirstRowColumn">首行為列</param>
    /// <param name="fileName">Excel文件路徑</param>
    /// <returns></returns>
    public DataTable ExcelToDataTable(int sheetNum, bool isFirstRowColumn, string fileName)
    {
        IWorkbook workbook = null;
        ISheet sheet = null;
        DataTable myTable = new DataTable();
        try
        {
            var fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
            if (fileName.IndexOf(".xlsx") > 0)
                workbook = new XSSFWorkbook(fs);
            else if (fileName.IndexOf(".xls") > 0)
                workbook = new HSSFWorkbook(fs);
            sheet = workbook.GetSheetAt(sheetNum);

            //工作表不能為空
            if (sheet == null)
            {
                string str = "";
                for (int i = 0; i < workbook.NumberOfSheets; i++)
                {
                    str += workbook.GetSheetAt(i).SheetName + ",";
                }
                str = workbook.NumberOfSheets + str;
                throw new Exception($"sheet不能為空！參數：{sheetNum} 工作簿信息：{str}");
            }

            //Excel最大列數
            int MaxColumnNum = 0;
            for (int i = 0; i < sheet.LastRowNum; i++)
            {
                var row = sheet.GetRow(i);
                if (row.LastCellNum > MaxColumnNum)
                {
                    MaxColumnNum = row.LastCellNum;
                }
            }
            //Excel行數
            int MaxRowNum = sheet.LastRowNum;

            //table新增列
            for (int i = 0; i < MaxColumnNum; ++i)
            {
                //首行為列
                if (isFirstRowColumn)
                {
                    bool addEmptyCell = true;//是否添加空列
                    ICell cell = sheet.GetRow(0).GetCell(i);
                    if (cell != null)
                    {
                        //table列賦值
                        string cellValue = "";//列名
                        if (cell.CellType == CellType.Numeric)
                        {
                            cellValue = cell.NumericCellValue.ToString();
                        }
                        else
                        {
                            cellValue = cell.StringCellValue;
                        }
                        if (!string.IsNullOrWhiteSpace(cellValue))
                        {
                            //列數據為Excel的數據
                            addEmptyCell = false;
                            myTable.Columns.Add(new DataColumn(cellValue));
                        }
                    }
                    if (addEmptyCell)
                    {
                        myTable.Columns.Add(new DataColumn(""));//列數據為空
                    }
                }
                else
                {
                    myTable.Columns.Add(new DataColumn(i + ""));
                }
            }

            //起始行
            int startRow = 0;
            if (isFirstRowColumn)
            {
                startRow = 1;
            }

            //DataTable賦值
            for (int i = startRow; i <= MaxRowNum; ++i)
            {
                IRow row = sheet.GetRow(i);
                if (row == null) continue;

                DataRow NewRow = myTable.NewRow();
                for (int j = row.FirstCellNum; j < row.LastCellNum; ++j)
                {
                    ICell cell = row.GetCell(j);
                    string value = "";
                    if (cell != null)
                    {
                        //table行賦值                            
                        if (cell.CellType == CellType.Numeric)
                        {
                            value = cell.NumericCellValue.ToString();
                            if ((j == 0) && ((i == 6) || (i == 12)))
                            {
                                //特殊的幾個單元格 轉換為 日期格式
                                value = ToDateTimeValue(cell.NumericCellValue.ToString());
                            }
                        }
                        else
                        {
                            //row.GetCell(j).SetCellType(CellType.String);
                            value = cell.StringCellValue;
                        }
                    }
                    NewRow[j] = value;
                }
                myTable.Rows.Add(NewRow);
            }
            return myTable;
        }
        catch (Exception ex)
        {
            throw ex;
        }
    }


    /// <summary>
    /// DataTable 轉換為 Html
    /// </summary>
    /// <param name="dt"></param>
    /// <returns></returns>
    public string GetHtmlString(DataTable dt)
    {
        StringBuilder sb = new StringBuilder();
        sb.Append("<html><head>");
        sb.Append("<title>Excel轉換為Table</title>");
        sb.Append("<meta http-equiv='content-type' content='text/html; charset=GB2312'> ");
        sb.Append("<style type=text/css>");
        sb.Append("td{font-size: 9pt;border:solid 1 #000000;}");
        sb.Append("table{padding:3 0 3 0;border:solid 1 #000000;margin:0 0 0 0;BORDER-COLLAPSE: collapse;}");
        sb.Append("</style>");
        sb.Append("</head>");
        sb.Append("<body>");
        sb.Append("<table cellSpacing='0' cellPadding='0' width ='100%' border='1'>");
        sb.Append("<tr valign='middle'>");
        sb.Append("<td><b></b></td>");
        foreach (DataColumn column in dt.Columns)
        {
            sb.Append("<td><b><span>" + column.ColumnName + "</span></b></td>");
        }
        sb.Append("</tr>");
        int iColsCount = dt.Columns.Count;
        int rowsCount = dt.Rows.Count - 1;
        for (int j = 0; j <= rowsCount; j++)
        {
            sb.Append("<tr>");
            sb.Append("<td>" + ((int)(j + 1)).ToString() + "</td>");
            for (int k = 0; k <= iColsCount - 1; k++)
            {
                sb.Append("<td>");
                object obj = dt.Rows[j][k];
                if (obj == DBNull.Value)
                {
                    obj = "&nbsp;";//如果是NULL則在HTML里面使用一個空格替換之
                }
                if (obj.ToString() == "")
                {
                    obj = "&nbsp;";
                }
                string strCellContent = obj.ToString().Trim();
                sb.Append("<span>" + strCellContent + "</span>");
                sb.Append("</td>");
            }
            sb.Append("</tr>");
        }
        sb.Append("</table>");

        //點擊單元格 輸出 行和列
        sb.Append("<script src='https://cdn.bootcss.com/jquery/1.12.4/jquery.min.js'></script>");
        sb.Append("<script type='text/javascript'>");
        sb.Append("$('table tbody').on('click', 'td', function (e) {");
        sb.Append("var row = $(this).parent().prevAll().length-1 ;");
        sb.Append("var column = $(this).prevAll().length-1 ;");
        sb.Append("var str = 'dt.Rows[' + row + '][' + column + '].ToString()';");
        sb.Append("console.log(str);alert(str);");
        sb.Append("});");
        sb.Append("</script>");

        sb.Append("</body></html>");
        return sb.ToString();
    }


    /// <summary>
    /// 數字格式的時間 轉換為 字符串格式的時間
    /// 數字格式的時間 如： 42095.7069444444/0.650694444444444
    /// </summary>
    /// <param name="timeStr">數字,如:42095.7069444444/0.650694444444444</param>
    /// <returns>日期/時間格式</returns>
    public string ToDateTimeValue(string strNumber)
    {
        if (!string.IsNullOrWhiteSpace(strNumber))
        {
            Decimal tempValue;
            //先檢查 是不是數字;
            if (Decimal.TryParse(strNumber, out tempValue))
            {
                //天數,取整
                int day = Convert.ToInt32(Math.Truncate(tempValue));
                //這里也不知道為什么. 如果是小於32,則減1,否則減2
                //日期從1900-01-01開始累加 
                // day = day < 32 ? day - 1 : day - 2;
                DateTime dt = new DateTime(1900, 1, 1).AddDays(day < 32 ? (day - 1) : (day - 2));

                //小時:減掉天數,這個數字轉換小時:(* 24) 
                Decimal hourTemp = (tempValue - day) * 24;//獲取小時數
                                                            //取整.小時數
                int hour = Convert.ToInt32(Math.Truncate(hourTemp));
                //分鍾:減掉小時,( * 60)
                //這里舍入,否則取值會有1分鍾誤差.
                Decimal minuteTemp = Math.Round((hourTemp - hour) * 60, 2);//獲取分鍾數
                int minute = Convert.ToInt32(Math.Truncate(minuteTemp));
                //秒:減掉分鍾,( * 60)
                //這里舍入,否則取值會有1秒誤差.
                Decimal secondTemp = Math.Round((minuteTemp - minute) * 60, 2);//獲取秒數
                int second = Convert.ToInt32(Math.Truncate(secondTemp));

                //時間格式:00:00:00
                string resultTimes = string.Format("{0}:{1}:{2}",
                        (hour < 10 ? ("0" + hour) : hour.ToString()),
                        (minute < 10 ? ("0" + minute) : minute.ToString()),
                        (second < 10 ? ("0" + second) : second.ToString()));

                if (day > 0)
                    return string.Format("{0} {1}", dt.ToString("yyyy-MM-dd"), resultTimes);
                else
                    return resultTimes;
            }
        }
        return string.Empty;
    }
}

 

轉換的方法

/// <summary>
/// excel 轉換為 datatable
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button1_Click(object sender, EventArgs e)
{
    OperationExcel _OperationExcel = new OperationExcel();
    DataTable dt = _OperationExcel.ExcelToDataTable(0, true, "21.xls");        
}


/// <summary>
/// datatable 轉換為 html
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button2_Click(object sender, EventArgs e)
{
    OperationExcel _OperationExcel = new OperationExcel();
    DataTable dt = _OperationExcel.ExcelToDataTable(0, true, "21.xls");
    textBox1.Text = _OperationExcel.GetHtmlString(dt);
}


/// <summary>
/// datatable 轉換為 json格式
/// </summary>
/// <param name="sender"></param>
/// <param name="e"></param>
private void button3_Click(object sender, EventArgs e)
{
    OperationExcel _OperationExcel = new OperationExcel();
    List<ExcelInfo> list = new List<ExcelInfo>();
    list.Add(new ExcelInfo("21.xls", 5));
    list.Add(new ExcelInfo("22.xls", 5));
    list.Add(new ExcelInfo("23.xls", 4));
    list.ForEach(c =>
    {
        for (int i = 0; i < c.SheetCount; i++)
        {
            DataTable dt = _OperationExcel.ExcelToDataTable(i, true, c.FileName);
            string str = CreateStrObj(dt);
            string num = c.FileName.Replace(".xls", "");
            string fileName = $"Y{num}-{i + 1}.txt";
            System.IO.File.WriteAllText($"txt//{fileName}", str);
        }
    });
    MessageBox.Show("格式轉換完成！");
}



public string CreateStrObj(DataTable dt)
{
    ZLInfo _ZLInfo = new ZLInfo();


    //基本信息
    _ZLInfo._橋梁名稱 = dt.Rows[0][1].ToString();
    _ZLInfo._構建類型 = dt.Rows[0][5].ToString();
    _ZLInfo._構件編號 = dt.Rows[0][8].ToString();
    _ZLInfo._張拉方式 = dt.Rows[0][11].ToString();
    _ZLInfo._張拉日期 = "";
    _ZLInfo._砼設計強度 = dt.Rows[2][1].ToString();



    //詳情數據
    List<DetailInfor> list = new List<DetailInfor>();
    int total = 2;
    for (int i = 0; i < total; i++)
    {
        DetailInfor _DetailInfor = new DetailInfor();
        _DetailInfor._孔道號 = dt.Rows[i * 6 + 5][1].ToString();
        _DetailInfor._張拉時間 = dt.Rows[5][0].ToString();
        _DetailInfor._理論伸長量 = dt.Rows[5][14].ToString();
        _DetailInfor._設計張力 = dt.Rows[5][13].ToString();
        _DetailInfor._回縮量 = dt.Rows[5][12].ToString();
        _DetailInfor._張拉力 = "";
        _DetailInfor._油壓 = dt.Rows[5][11].ToString();
        _DetailInfor._伸長量 = "";
        _DetailInfor._伸長量誤差 = "";

        _DetailInfor._千斤頂編號1 = dt.Rows[5][3].ToString();
        _DetailInfor._初始油壓1 = dt.Rows[5][5].ToString();
        _DetailInfor._初始張拉力1 = dt.Rows[6][5].ToString();
        _DetailInfor._初始伸長量1 = dt.Rows[7][5].ToString();
        _DetailInfor._2倍初始油壓1 = dt.Rows[5][6].ToString();
        _DetailInfor._2倍初始張拉力1 = dt.Rows[6][6].ToString();
        _DetailInfor._2倍初始伸長量1 = dt.Rows[7][6].ToString();
        _DetailInfor._100油壓1 = dt.Rows[5][8].ToString();
        _DetailInfor._100張拉力1 = dt.Rows[6][8].ToString();
        _DetailInfor._100伸長量1 = dt.Rows[7][8].ToString();

        _DetailInfor._千斤頂編號2 = dt.Rows[8][3].ToString();
        _DetailInfor._初始油壓2 = dt.Rows[8][5].ToString();
        _DetailInfor._初始張拉力2 = dt.Rows[9][5].ToString();
        _DetailInfor._初始伸長量2 = dt.Rows[10][5].ToString();
        _DetailInfor._2倍初始油壓2 = dt.Rows[8][6].ToString();
        _DetailInfor._2倍初始張拉力2 = dt.Rows[9][6].ToString();
        _DetailInfor._2倍初始伸長量2 = dt.Rows[10][6].ToString();
        _DetailInfor._100油壓2 = dt.Rows[8][8].ToString();
        _DetailInfor._100張拉力2 = dt.Rows[9][8].ToString();
        _DetailInfor._100伸長量2 = dt.Rows[10][8].ToString();
        _DetailInfor._是否合格 = "";
        list.Add(_DetailInfor);
    }
    _ZLInfo._詳情數據 = list;



    string str = JsonConvert.SerializeObject(_ZLInfo);

    str = str.Replace("_", "");
    str = str.Replace("100油壓", "100%油壓").Replace("100張拉力", "100%張拉力").Replace("100伸長量", "100%伸長量");


    return str;
}

 

相關的類

public class ExcelInfo
{
    public string FileName { get; set; }
    public int SheetCount { get; set; }
    public ExcelInfo(string FileName, int SheetCount)
    {
        this.FileName = FileName;
        this.SheetCount = SheetCount;
    }
}

public class ZLInfo
{
    public string _橋梁名稱 { get; set; }
    public string _構建類型 { get; set; }
    public string _構件編號 { get; set; }
    public string _張拉方式 { get; set; }
    public string _張拉日期 { get; set; }
    public string _砼設計強度 { get; set; }
    public List<DetailInfor> _詳情數據 { get; set; }
}

public class DetailInfor
{
    public string _孔道號 { get; set; }
    public string _張拉時間 { get; set; }
    public string _理論伸長量 { get; set; }
    public string _設計張力 { get; set; }
    public string _回縮量 { get; set; }
    public string _張拉力 { get; set; }
    public string _油壓 { get; set; }
    public string _伸長量 { get; set; }
    public string _伸長量誤差 { get; set; }
    public string _千斤頂編號1 { get; set; }
    public string _初始油壓1 { get; set; }
    public string _初始張拉力1 { get; set; }
    public string _初始伸長量1 { get; set; }
    public string _2倍初始油壓1 { get; set; }
    public string _2倍初始張拉力1 { get; set; }
    public string _2倍初始伸長量1 { get; set; }
    public string _100油壓1 { get; set; }
    public string _100張拉力1 { get; set; }
    public string _100伸長量1 { get; set; }
    public string _千斤頂編號2 { get; set; }
    public string _初始油壓2 { get; set; }
    public string _初始張拉力2 { get; set; }
    public string _初始伸長量2 { get; set; }
    public string _2倍初始油壓2 { get; set; }
    public string _2倍初始張拉力2 { get; set; }
    public string _2倍初始伸長量2 { get; set; }
    public string _100油壓2 { get; set; }
    public string _100張拉力2 { get; set; }
    public string _100伸長量2 { get; set; }
    public string _是否合格 { get; set; }
}