609 lines
24 KiB
C#
609 lines
24 KiB
C#
using System;
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using System.Collections.Generic;
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using System.Data;
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using System.IO;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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using System.Web;
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using NPOI.HPSF;
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using NPOI.HSSF.UserModel;
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using NPOI.SS.UserModel;
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using NPOI.XSSF.UserModel;
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namespace MyCode.Project.Infrastructure.Common
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{
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/// <summary>
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/// EXCEL工具类
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/// </summary>
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public class ExcelUtils
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{
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/// <summary>
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/// 工作簿的定义
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/// </summary>
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private IWorkbook _iWorkbook;
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/// <summary>
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/// 文件流初始化对象
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/// </summary>
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/// <param name="stream">传入流对象</param>
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public ExcelUtils(Stream stream)
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{
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_iWorkbook = CreateWorkBook(stream);
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}
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/// <summary>
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/// 传入文件名称读取Excel文件中的信息
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/// </summary>
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/// <param name="fileName">传递的文件名称(包含路径)</param>
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public ExcelUtils(string fileName)
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{
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using (var fileStream = new FileStream(fileName, FileMode.Open, FileAccess.Read))
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{
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_iWorkbook = CreateWorkBook(fileStream);
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}
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}
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/// <summary>
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/// 使用try-Catch创建一个工作薄对象
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/// </summary>
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/// <param name="stream">传递过来创建的工作薄对象(流文件)</param>
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/// <returns></returns>
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private IWorkbook CreateWorkBook(Stream stream)
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{
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try
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{
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return new XSSFWorkbook(stream);
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}
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catch
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{
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return new HSSFWorkbook(stream);
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}
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}
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/// <summary>
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/// 读取Excel中默认第一张sheet的集合
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/// </summary>
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/// <typeparam name="T">需要读取的Excel实体集合和Excel中的字段对应</typeparam>
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/// <param name="fields">excel中各个列，以此要转换成为对象的字段</param>
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/// <returns>返回List集合对象</returns>
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public List<T> ExcelToList<T>(List<string> fields) where T : class, new()
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{
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return ExportToList<T>(_iWorkbook.GetSheetAt(0), fields);
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}
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/// <summary>
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/// 将Excel中第一个Sheet中的数据信息转换成List集合
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/// </summary>
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/// <typeparam name="T">需要读取的Excel实体集合和Excel中的字段对应</typeparam>
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/// <param name="iSheet">表示Excel中第一个Sheet</param>
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/// <param name="fields">excel中各个列，以此要转换成为对象的字段</param>
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/// <returns></returns>
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public List<T> ExportToList<T>(ISheet iSheet, List<string> fields) where T : class, new()
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{
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List<T> list = new List<T>();
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//循环遍历每一行的数据
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for (int i = iSheet.FirstRowNum + 1, len = iSheet.LastRowNum + 1; i < len; i++)
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{
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T t = new T();
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IRow row = iSheet.GetRow(i);
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if (row == null)
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{
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continue;
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}
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//循环遍历列数据
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for (int j = 0, len2 = fields.Count; j < len2; j++)
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{
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ICell cell = row.GetCell(j);
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if (cell == null)
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{
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continue;
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}
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object cellValue;
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switch (cell.CellType)
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{
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case CellType.String: //文本
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cellValue = cell.StringCellValue;
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break;
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case CellType.Numeric: //数值
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cellValue = Convert.ToString(cell.NumericCellValue);
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break;
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case CellType.Boolean: //bool类型
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cellValue = cell.BooleanCellValue;
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break;
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case CellType.Blank: //空值
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cellValue = "";
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break;
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default:
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cellValue = "";
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break;
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}
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typeof(T).GetProperty(fields[j]).SetValue(t, cellValue, null);
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}
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list.Add(t);
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}
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return list;
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}
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public List<string> ExportFirstRowData(ISheet iSheet)
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{
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List<string> list = new List<string>();
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if (iSheet.LastRowNum > 0)
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{
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IRow row = iSheet.GetRow(0);
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foreach (var item in row.Cells)
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{
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list.Add(item.StringCellValue.Trim());
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}
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}
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return list;
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}
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public List<string> ExportFirstRowData()
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{
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return ExportFirstRowData(_iWorkbook.GetSheetAt(0));
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}
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/// <summary>
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/// 读取Excel中默认第一张sheet的集合
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/// </summary>
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/// <typeparam name="T">需要读取的Excel实体集合和Excel中的字段对应</typeparam>
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/// <param name="fields">excel中各个列，以此要转换成为对象的字段</param>
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/// <returns>返回List集合对象</returns>
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public List<Dictionary<string, object>> ExcelToList()
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{
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return ExportToList(_iWorkbook.GetSheetAt(0));
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}
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/// <summary>
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/// 将Excel中第一个Sheet中的数据信息转换成List集合
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/// </summary>
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/// <typeparam name="T">需要读取的Excel实体集合和Excel中的字段对应</typeparam>
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/// <param name="iSheet">表示Excel中第一个Sheet</param>
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/// <param name="fields">excel中各个列，以此要转换成为对象的字段</param>
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/// <returns></returns>
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public List<Dictionary<string, object>> ExportToList(ISheet iSheet)
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{
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List<Dictionary<string, object>> list = new List<Dictionary<string, object>>();
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//获取第一行数据。一般是标题数据
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List<string> columns = this.ExportFirstRowData();
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//循环遍历每一行的数据
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for (int i = iSheet.FirstRowNum + 1, len = iSheet.LastRowNum + 1; i < len; i++)
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{
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Dictionary<string, object> t = new Dictionary<string, object>();
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IRow row = iSheet.GetRow(i);
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if (row == null)
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{
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continue;
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}
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bool isAllNull = true;
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//循环遍历列数据
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for (int j = 0, len2 = columns.Count; j < len2; j++)
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{
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ICell cell = row.GetCell(j);
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if (cell == null)
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{
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t.Add(columns[j].Trim(), null);
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continue;
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}
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object cellValue;
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switch (cell.CellType)
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{
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case CellType.String: //文本
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cellValue = cell.StringCellValue.Trim();
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break;
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case CellType.Numeric: //数值
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cellValue = Convert.ToString(cell.NumericCellValue);
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break;
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case CellType.Boolean: //bool类型
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cellValue = cell.BooleanCellValue;
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break;
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case CellType.Blank: //空值
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cellValue = null;
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break;
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case CellType.Formula:
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if (cell.CachedFormulaResultType == CellType.Numeric)
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{
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cellValue = Convert.ToString(cell.NumericCellValue);
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}
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else
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{
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cellValue = cell.StringCellValue;
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}
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break;
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default:
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cellValue = null;
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break;
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}
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//是否全部内容为空
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isAllNull = cellValue == null && isAllNull;
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t.Add(columns[j].Trim(), cellValue);
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}
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if (!isAllNull)
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{
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list.Add(t);
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}
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}
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return list;
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}
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/// <summary>
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/// DataTable导出到Excel文件
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/// </summary>
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/// <param name="dtSource">源DataTable</param>
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/// <param name="strHeaderText">表头文本</param>
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/// <param name="headers">需要导出的列的列头</param>
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/// <param name="cellKes">需要导出的对应的列字段</param>
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/// <param name="strFileName">保存位置</param>
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public static void Export(DataTable dtSource, string strHeaderText, string[] headers, string[] cellKes, string strFileName)
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{
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// 将需要导出的数据导到excel中并生成文件流
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using (MemoryStream ms = Export(dtSource, strHeaderText, headers, cellKes))
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{
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// 将文件流写入文件
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using (FileStream fs = new FileStream(strFileName, FileMode.Create, FileAccess.Write))
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{
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byte[] data = ms.ToArray();
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fs.Write(data, 0, data.Length);
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fs.Flush();
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}
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}
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}
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/// <summary>
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/// DataTable导出到Excel的MemoryStream
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/// </summary>
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/// <param name="dtSource">源DataTable</param>
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/// <param name="strHeaderText">表头文本</param>
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/// <param name="headers">需要导出的列的列头</param>
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/// <param name="cellKes">需要导出的对应的列字段</param>
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/// <returns></returns>
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public static MemoryStream Export(DataTable dtSource, string strHeaderText, string[] headers, string[] cellKes)
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{
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// excel
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HSSFWorkbook workbook = new HSSFWorkbook();
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// 创建一个sheet页，已strHeaderText命名
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ISheet sheet = workbook.CreateSheet(strHeaderText);
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#region 右击文件 属性信息
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{
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DocumentSummaryInformation dsi = PropertySetFactory.CreateDocumentSummaryInformation();
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dsi.Company = "NPOI";
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workbook.DocumentSummaryInformation = dsi;
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SummaryInformation si = PropertySetFactory.CreateSummaryInformation();
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//si.Author = "文件作者信息"; //填加xls文件作者信息
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//si.ApplicationName = "创建程序信息"; //填加xls文件创建程序信息
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//si.LastAuthor = "最后保存者信息"; //填加xls文件最后保存者信息
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//si.Comments = "作者信息"; //填加xls文件作者信息
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//si.Title = "标题信息"; //填加xls文件标题信息
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//si.Subject = "主题信息";//填加文件主题信息
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si.CreateDateTime = DateTime.Now;
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workbook.SummaryInformation = si;
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}
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#endregion
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// 日期的样式
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ICellStyle dateStyle = workbook.CreateCellStyle();
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// 日期的格式化
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IDataFormat format = workbook.CreateDataFormat();
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dateStyle.DataFormat = format.GetFormat("yyyy-mm-dd");
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// 字体样式
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IFont datafont = workbook.CreateFont();
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// 字体大小
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datafont.FontHeightInPoints = 11;
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dateStyle.SetFont(datafont);
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// 边框
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dateStyle.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin;
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dateStyle.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin;
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dateStyle.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin;
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dateStyle.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin;
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// 其他数据的样式
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ICellStyle cellStyle = workbook.CreateCellStyle();
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// 字体样式
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IFont cellfont = workbook.CreateFont();
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// 字体大小
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cellfont.FontHeightInPoints = 11;
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cellStyle.SetFont(cellfont);
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// 边框
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cellStyle.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin;
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cellStyle.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin;
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cellStyle.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin;
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cellStyle.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin;
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// 总的列数
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int colNum = headers.Length;
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// 每个列的宽度
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int[] arrColWidth = new int[colNum];
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// 初始化列的宽度为列头的长度，已需要显示的列头的名字长度计算
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for (int i = 0; i < headers.Length; i++)
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{
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arrColWidth[i] = Encoding.GetEncoding(936).GetBytes(headers[i]).Length * 3;
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}
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// 循环数据，取每列数据最宽的作为该列的宽度
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for (int i = 0; i < dtSource.Rows.Count; i++)
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{
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for (int j = 0; j < cellKes.Length; j++)
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{
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int intTemp = Encoding.GetEncoding(936).GetBytes(dtSource.Rows[i][cellKes[j]].ToString()).Length;
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if (intTemp > arrColWidth[j])
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{
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arrColWidth[j] = intTemp;
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}
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}
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}
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// 记录生成的行数
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int rowIndex = 0;
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// DataTable中的列信息
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DataColumnCollection columns = dtSource.Columns;
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// 循环所有的行，向sheet页中添加数据
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foreach (DataRow row in dtSource.Rows)
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{
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#region 新建表，填充表头，填充列头，样式
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if (rowIndex == 65535 || rowIndex == 0)
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{
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// 如果不是第一行，则创建一个新的sheet页
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if (rowIndex != 0)
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{
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sheet = workbook.CreateSheet();
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}
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#region 表头及样式
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{
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// 在当前sheet页上创建第一行
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IRow headerRow = sheet.CreateRow(0);
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// 该行的高度
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headerRow.HeightInPoints = 50;
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// 设置第一列的值
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headerRow.CreateCell(0).SetCellValue(strHeaderText);
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// 设置列的样式
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ICellStyle headStyle = workbook.CreateCellStyle();
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// 内容居中显示
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headStyle.Alignment = HorizontalAlignment.Center;
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// 字体样式
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IFont font = workbook.CreateFont();
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// 字体大小
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font.FontHeightInPoints = 20;
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// 粗体显示
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font.Boldweight = 700;
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// 字体颜色
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font.Color = NPOI.HSSF.Util.HSSFColor.Blue.Index;
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headStyle.SetFont(font);
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// 边框
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headStyle.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin;
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headStyle.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin;
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headStyle.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin;
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headStyle.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin;
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// 设置单元格的样式
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headerRow.GetCell(0).CellStyle = headStyle;
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// 设置该行每个单元格的样式
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for (int i = 1; i < colNum; i++)
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{
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headerRow.CreateCell(i);
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headerRow.GetCell(i).CellStyle = headStyle;
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}
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// 合并单元格
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sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(0, 0, 0, colNum - 1));
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}
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#endregion
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#region 列头及样式
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{
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// 创建第二行
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IRow headerRow = sheet.CreateRow(1);
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// 该行的高度
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headerRow.HeightInPoints = 28;
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// 列的样式
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ICellStyle headStyle = workbook.CreateCellStyle();
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// 单元格内容居中显示
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headStyle.Alignment = HorizontalAlignment.Center;
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// 字体样式
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IFont font = workbook.CreateFont();
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// 字体大小
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font.FontHeightInPoints = 12;
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// 粗体
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font.Boldweight = 700;
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// 字体颜色
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font.Color = NPOI.HSSF.Util.HSSFColor.Black.Index;
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headStyle.SetFont(font);
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// 边框
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headStyle.BorderBottom = NPOI.SS.UserModel.BorderStyle.Thin;
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headStyle.BorderLeft = NPOI.SS.UserModel.BorderStyle.Thin;
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headStyle.BorderRight = NPOI.SS.UserModel.BorderStyle.Thin;
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headStyle.BorderTop = NPOI.SS.UserModel.BorderStyle.Thin;
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// 设置每列的样式和值
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for (int i = 0; i < headers.Length; i++)
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{
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headerRow.CreateCell(i).SetCellValue(headers[i]);
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headerRow.GetCell(i).CellStyle = headStyle;
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//设置列宽
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sheet.SetColumnWidth(i, (arrColWidth[i] + 1) * 256);
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}
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}
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#endregion
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rowIndex = 2;
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}
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#endregion
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#region 填充内容
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// 创建新的一行
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IRow dataRow = sheet.CreateRow(rowIndex);
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// 该行的高度
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dataRow.HeightInPoints = 23;
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// 循环需要写入的每列数据
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for (int i = 0; i < cellKes.Length; i++)
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{
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// 创建列
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ICell newCell = dataRow.CreateCell(i);
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// 获取DataTable中该列对象
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DataColumn column = columns[cellKes[i]];
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// 该列的值
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string drValue = row[column].ToString();
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// 根据值得类型分别处理之后赋值
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switch (column.DataType.ToString())
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{
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case "System.String"://字符串类型
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newCell.SetCellValue(drValue);
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newCell.CellStyle = cellStyle;
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break;
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case "System.DateTime"://日期类型
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DateTime dateV;
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DateTime.TryParse(drValue, out dateV);
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newCell.SetCellValue(dateV);
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newCell.CellStyle = dateStyle;//格式化显示
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break;
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case "System.Boolean"://布尔型
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bool boolV = false;
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bool.TryParse(drValue, out boolV);
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newCell.SetCellValue(boolV);
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newCell.CellStyle = cellStyle;
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break;
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case "System.Int16"://整型
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case "System.Int32":
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case "System.Int64":
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case "System.Byte":
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int intV = 0;
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int.TryParse(drValue, out intV);
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newCell.SetCellValue(intV);
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newCell.CellStyle = cellStyle;
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||
break;
|
||
case "System.Decimal"://浮点型
|
||
case "System.Double":
|
||
double doubV = 0;
|
||
double.TryParse(drValue, out doubV);
|
||
newCell.SetCellValue(doubV);
|
||
|
||
newCell.CellStyle = cellStyle;
|
||
break;
|
||
case "System.DBNull"://空值处理
|
||
newCell.SetCellValue("");
|
||
|
||
newCell.CellStyle = cellStyle;
|
||
break;
|
||
default:
|
||
newCell.SetCellValue("");
|
||
|
||
newCell.CellStyle = cellStyle;
|
||
break;
|
||
}
|
||
}
|
||
#endregion
|
||
|
||
rowIndex++;
|
||
}
|
||
|
||
MemoryStream ms = new MemoryStream();
|
||
workbook.Write(ms);
|
||
ms.Flush();
|
||
ms.Position = 0;
|
||
return ms;
|
||
}
|
||
|
||
/// <summary>
|
||
/// 用于Web导出
|
||
/// </summary>
|
||
/// <param name="dtSource">源DataTable</param>
|
||
/// <param name="strHeaderText">表头文本</param>
|
||
/// <param name="headers">需要导出的列的列头</param>
|
||
/// <param name="cellKes">需要导出的对应的列字段</param>
|
||
/// <param name="strFileName">文件名</param>
|
||
public static void ExportByWeb(DataTable dtSource, string strHeaderText, string[] headers, string[] cellKes, string strFileName)
|
||
{
|
||
HttpContext curContext = HttpContext.Current;
|
||
|
||
// 设置编码和附件格式
|
||
curContext.Response.ContentType = "application/vnd.ms-excel";
|
||
curContext.Response.ContentEncoding = Encoding.UTF8;
|
||
curContext.Response.Charset = "";
|
||
curContext.Response.AppendHeader("Content-Disposition",
|
||
"attachment;filename=" + HttpUtility.UrlEncode(strFileName, Encoding.UTF8));
|
||
|
||
curContext.Response.BinaryWrite(Export(dtSource, strHeaderText, headers, cellKes).GetBuffer());
|
||
curContext.Response.End();
|
||
}
|
||
|
||
/// <summary>
|
||
/// 导出Excel到Web文件
|
||
/// </summary>
|
||
/// <param name="table">源数据</param>
|
||
/// <param name="strHeaderText">表头文本</param>
|
||
/// <param name="headers">需要导出的列的列头</param>
|
||
/// <param name="cellKes">需要导出的对应的列字段</param>
|
||
/// <param name="strFileName">文件名</param>
|
||
public static void ExportToWeb(DataTable table, string strHeaderText, string[] headers, string[] cellKes,
|
||
string strFileName)
|
||
{
|
||
using (FileStream file = new FileStream(strFileName, FileMode.Create))
|
||
{
|
||
var ms = Export(table, strHeaderText, headers, cellKes);
|
||
ms.WriteTo(file);
|
||
file.Flush();
|
||
}
|
||
}
|
||
|
||
/// <summary>读取excel
|
||
/// 默认第一行为标头
|
||
/// </summary>
|
||
/// <param name="strFileName">excel文档路径</param>
|
||
/// <returns></returns>
|
||
public static DataTable Import(string strFileName)
|
||
{
|
||
DataTable dt = new DataTable();
|
||
|
||
HSSFWorkbook hssfworkbook;
|
||
using (FileStream file = new FileStream(strFileName, FileMode.Open, FileAccess.Read))
|
||
{
|
||
hssfworkbook = new HSSFWorkbook(file);
|
||
}
|
||
ISheet sheet = hssfworkbook.GetSheetAt(0);
|
||
System.Collections.IEnumerator rows = sheet.GetRowEnumerator();
|
||
|
||
IRow headerRow = sheet.GetRow(0);
|
||
int cellCount = headerRow.LastCellNum;
|
||
|
||
for (int j = 0; j < cellCount; j++)
|
||
{
|
||
ICell cell = headerRow.GetCell(j);
|
||
dt.Columns.Add(cell.ToString());
|
||
}
|
||
|
||
for (int i = (sheet.FirstRowNum + 1); i <= sheet.LastRowNum; i++)
|
||
{
|
||
IRow row = sheet.GetRow(i);
|
||
DataRow dataRow = dt.NewRow();
|
||
|
||
for (int j = row.FirstCellNum; j < cellCount; j++)
|
||
{
|
||
if (row.GetCell(j) != null)
|
||
dataRow[j] = row.GetCell(j).ToString();
|
||
}
|
||
|
||
dt.Rows.Add(dataRow);
|
||
}
|
||
return dt;
|
||
}
|
||
}
|
||
}
|