NPOI：http://npoi.codeplex.com/

LitJson：https://code.google.com/p/litjsonmd/downloads/list

using System.Data; using System.IO; using NPOI.SS.UserModel; using System.Text;/// <summary> /// 獲取json字符串的類 /// </summary> public class GetJson {/// <summary>/// 得到DataTable的方法/// </summary>/// <param name="filePath">傳入Excel所在的路徑</param>/// <param name="tableName">傳入Table的name</param>/// <returns></returns>public static DataTable GetTable(string filePath, string tableName){DataTable table = new DataTable(tableName);if (File.Exists(filePath)){using (FileStream fStream = File.OpenRead(filePath)){IWorkbook workBook = WorkbookFactory.Create(fStream);ISheet sheet1 = workBook.GetSheetAt(0);IRow headRow = sheet1.GetRow(0);int cellCount = headRow.LastCellNum;for (int m = headRow.FirstCellNum; m < cellCount; m++){string headCellValue = headRow.GetCell(m).StringCellValue;table.Columns.Add(headCellValue);}int rowCount = sheet1.LastRowNum;for (int i = (sheet1.FirstRowNum + 1); i < rowCount + 1; i++){DataRow dataRow = table.NewRow();IRow row = sheet1.GetRow(i);for (int j = row.FirstCellNum; j < cellCount; j++){if (row.GetCell(j) != null)dataRow[j] = row.GetCell(j).ToString();}table.Rows.Add(dataRow);}}}return table;}/// <summary>/// 得到json字符串的類/// </summary>/// <param name="dt">傳入要生成json字符串的Table</param>/// <returns></returns>public static string GetJsonStr(DataTable dt){StringBuilder jsonBuilder = new StringBuilder();int count = dt.Rows.Count;if (count != 0){jsonBuilder.Append("{");jsonBuilder.Append("\'");//for (int j = 0; j < dt.Columns.Count; j++)//{// jsonBuilder.Append(dt.Rows[i][0].ToString());// break;//} jsonBuilder.Append(dt.TableName);jsonBuilder.Append("\'");jsonBuilder.Append(":");jsonBuilder.Append("[");for (int i = 0; i < dt.Rows.Count; i++){//jsonBuilder.Append("\'");//for (int j = 0; j < dt.Columns.Count; j++)//{// jsonBuilder.Append(dt.Rows[i][0].ToString());// break;//}//jsonBuilder.Append("\'");//jsonBuilder.Append(":");jsonBuilder.Append("{");for (int j = 0; j < dt.Columns.Count; j++){jsonBuilder.Append("");jsonBuilder.Append("\'");jsonBuilder.Append(dt.Columns[j].ColumnName);jsonBuilder.Append("\'");jsonBuilder.Append(":");if (!IsNum(dt.Rows[i][j].ToString())){jsonBuilder.Append("\'" + dt.Rows[i][j].ToString() + "\'");}else{jsonBuilder.Append(dt.Rows[i][j].ToString());}jsonBuilder.Append(",");}jsonBuilder.Remove(jsonBuilder.Length - 1, 1);jsonBuilder.Append("},");}jsonBuilder.Remove(jsonBuilder.Length - 1, 1);jsonBuilder.Append("]");jsonBuilder.Append("}");return jsonBuilder.ToString();}else{return null;}}/// <summary>/// 判斷是否為數字/// </summary>/// <param name="number">要判斷的string字符串</param>/// <returns>true/false</returns>private static bool IsNum(string number){try{for (int i = 0; i < number.Length; i++){if (!char.IsNumber(number, i)){return false;}}return true;}catch{return false;}} }

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轉載于:https://www.cnblogs.com/HelloUnity/p/NPOI%e8%af%bb%e5%8f%96Excel%e7%94%9f%e6%88%90DataTable%e8%bd%ac%e4%b8%baJson%e5%90%8e%e5%88%a9%e7%94%a8LitJons%e8%af%bb%e5%8f%96.html

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