一、NPOI简介
NPOI 是 POI 项目的 .NET 版本。POI是一个开源的Java读写Excel、WORD等微软OLE2组件文档的项目。
使用 NPOI 你就可以在没有安装 Office 或者相应环境的机器上对 WORD/EXCEL 文档进行读写。NPOI是构建在POI 3.x版本之上的，它可以在没有安装Office的情况下对Word/Excel文档进行读写操作。
NPOI官方教程地址：http://tonyqus.sinaapp.com
googlecode：http://code.google.com/p/npoi/
codeplex：http://npoi.codeplex.com/
二、导出Excel帮助类
/***
* Title：" " 项目
* 主题：用NPOI导出Excel文件
* Description：
* 功能：XXX
* Date：2019
* Version：0.1版本
* Author：Coffee
* Modify Recoder：
*/
using System;
using System.Data;
using System.IO;
using System.Text;
using NPOI.HPSF;
using NPOI.HSSF.UserModel;
using NPOI.SS.UserModel;
namespace kernal
{
public class NPOIHelper
{
#region 文件属性信息
static string companyName = "测试公司"; //公司名称
static string subject = "主题名称"; //主题名称
static string author = "测试作者"; //作者名称
#endregion
/// <summary>
/// Excel文件设置与数据处理
/// </summary>
/// <param name="table">数据表</param>
/// <param name="headerText">头部文本</param>
/// <param name="sheetName">表的名称</param>
/// <param name="columnName">数据列名称</param>
/// <param name="columnTitle">表标题</param>
/// <returns></returns>
public static HSSFWorkbook ExcelSettingsAndHandleData(DataTable table, string headerText, string sheetName, string[] columnName, string[] columnTitle)
{
HSSFWorkbook hssfworkbook = new HSSFWorkbook();
ISheet sheet = hssfworkbook.CreateSheet(sheetName);
#region 设置文件属性信息
//创建一个文档摘要信息实体。
DocumentSummaryInformation dsi = PropertySetFactory.CreateDocumentSummaryInformation();
dsi.Company = companyName; //公司名称
hssfworkbook.DocumentSummaryInformation = dsi;
//创建一个摘要信息实体。
SummaryInformation si = PropertySetFactory.CreateSummaryInformation();
si.Subject = subject;
si.Author = author;
si.Title = headerText;
si.Subject = headerText;
si.CreateDateTime = DateTime.Now;
hssfworkbook.SummaryInformation = si;
#endregion
ICellStyle dateStyle = hssfworkbook.CreateCellStyle();
IDataFormat format = hssfworkbook.CreateDataFormat();
dateStyle.DataFormat = format.GetFormat("yyyy-mm-dd");
#region 取得列宽
int[] colWidth = new int[columnName.Length];
for (int i = 0; i < columnName.Length; i++)
{
colWidth[i] = Encoding.GetEncoding(936).GetBytes(columnTitle[i]).Length;
}
for (int i = 0; i < table.Rows.Count; i++)
{
for (int j = 0; j < columnName.Length; j++)
{
int intTemp = Encoding.GetEncoding(936).GetBytes(table.Rows[i][columnName[j]].ToString()).Length;
if (intTemp > colWidth[j])
{
colWidth[j] = intTemp;
}
}
}
#endregion
int rowIndex = 0;
foreach (DataRow row in table.Rows)
{
#region 新建表，填充表头，填充列头，样式
if (rowIndex == 65535 || rowIndex == 0)
{
if (rowIndex != 0)
{
sheet = hssfworkbook.CreateSheet(sheetName + ((int)rowIndex / 65535).ToString());
}
#region 表头及样式
//if (!string.IsNullOrEmpty(headerText))
{
IRow headerRow = sheet.CreateRow(0);
headerRow.HeightInPoints = 25;
headerRow.CreateCell(0).SetCellValue(headerText);
ICellStyle headStyle = hssfworkbook.CreateCellStyle();
headStyle.Alignment = HorizontalAlignment.Center;
IFont font = hssfworkbook.CreateFont();
font.FontHeightInPoints = 20;
font.Boldweight = 700;
headStyle.SetFont(font);
headerRow.GetCell(0).CellStyle = headStyle;
sheet.AddMergedRegion(new NPOI.SS.Util.CellRangeAddress(0, 0, 0, table.Columns.Count - 1));
}
#endregion
#region 列头及样式
{
IRow headerRow;
headerRow = sheet.CreateRow(1);
ICellStyle headStyle = hssfworkbook.CreateCellStyle();
headStyle.Alignment = HorizontalAlignment.Center;
IFont font = hssfworkbook.CreateFont();
font.FontHeightInPoints = 10;
font.Boldweight = 700;
headStyle.SetFont(font);
for (int i = 0; i < columnName.Length; i++)
{
headerRow.CreateCell(i).SetCellValue(columnTitle[i]);
headerRow.GetCell(i).CellStyle = headStyle;
//设置列宽
if ((colWidth[i] + 1) * 256 > 30000)
{
sheet.SetColumnWidth(i, 10000);
}
else
{
sheet.SetColumnWidth(i, (colWidth[i] + 1) * 256);
}
}
}
#endregion
rowIndex = 2;
}
#endregion
#region 填充数据
IRow dataRow = sheet.CreateRow(rowIndex);
for (int i = 0; i < columnName.Length; i++)
{
ICell newCell = dataRow.CreateCell(i);
string drValue = row[columnName[i]].ToString();
switch (table.Columns[columnName[i]].DataType.ToString())
{
case "System.String"://字符串类型
if (drValue.ToUpper() == "TRUE")
newCell.SetCellValue("是");
else if (drValue.ToUpper() == "FALSE")
newCell.SetCellValue("否");
newCell.SetCellValue(drValue);
break;
case "System.DateTime"://日期类型
DateTime dateV;
DateTime.TryParse(drValue, out dateV);
newCell.SetCellValue(dateV);
newCell.CellStyle = dateStyle;//格式化显示
break;
case "System.Boolean"://布尔型
bool boolV = false;
bool.TryParse(drValue, out boolV);
if (boolV)
newCell.SetCellValue("是");
else
newCell.SetCellValue("否");
break;
case "System.Int16"://整型
case "System.Int32":
case "System.Int64":
case "System.Byte":
int intV = 0;
int.TryParse(drValue, out intV);
newCell.SetCellValue(intV);
break;
case "System.Decimal"://浮点型
case "System.Double":
double doubV = 0;
double.TryParse(drValue, out doubV);
newCell.SetCellValue(doubV);
break;
case "System.DBNull"://空值处理
newCell.SetCellValue("");
break;
default:
newCell.SetCellValue("");
break;
}
}
#endregion
rowIndex++;
}
return hssfworkbook;
}
/// <summary>
/// 将数据写入Excel文件
/// </summary>
/// <param name="hssfworkbook">工作簿</param>
/// <param name="exportPath">文件导出路径</param>
private static void WirteToFile(HSSFWorkbook hssfworkbook,string exportPath)
{
FileStream file = null;
try
{
file = new FileStream(exportPath + ".xls", FileMode.Create);
hssfworkbook.Write(file);
}
catch (Exception e)
{
throw e;
}
finally
{
file.Dispose();
hssfworkbook.Close();
}
}
/// <summary>
/// 导出Excel文件
/// </summary>
/// <param name="table">数据表</param>
/// <param name="headerText">头部文本。</param>
/// <param name="sheetName">工作表名称</param>
/// <param name="columnName">数据列对应字段名称。</param>
/// <param name="columnTitle">数据列对应字段的中文名称</param>
/// <param name="fileName">文件名称</param>
/// <param name="exportFilePath">导出的文件路径</param>
public static void ExportExcel(DataTable table, string headerText, string sheetName, string[] columnName, string[] columnTitle, string fileName,string exportFilePath)
{
//Excel文件设置与数据处理
HSSFWorkbook hssfworkbook = ExcelSettingsAndHandleData(table, headerText, sheetName, columnName, columnTitle);
//将数据写入Excel文件
WirteToFile(hssfworkbook, exportFilePath+fileName);
}
}//Class_end
}
三、导出Excel帮助类的使用方法
/***
* Title：" " 项目
* 主题：XXX
* Description：
* 功能：XXX
* Date：2019
* Version：0.1版本
* Author：Coffee
* Modify Recoder：
*/
using Control;
using Global;
using kernal;
using NPOI.SS.Formula.Functions;
using System.Collections;
using System.Collections.Generic;
using System.Data;
using UnityEngine;
namespace TestExport
{
public class Test_ExportExcel : MonoBehaviour
{
void Start()
{
}
private void Update()
{
if (Input.GetKeyDown(KeyCode.O))
{
//导出Excle文件
ExportExcel();
}
}
//导出Excle文件
private void ExportExcel()
{
string path = @"C:\Users\CoffeeMilk\Desktop\新建文件夹\测试\";
ExportData(path);
}
//人员信息
private DataTable PeopleInfo()
{
DataTable dtAllPeopleInfoData = new DataTable();
dtAllPeopleInfoData.Columns.Add("Number"); //数据序号
dtAllPeopleInfoData.Columns.Add("ID"); //用户编号
dtAllPeopleInfoData.Columns.Add("UserName"); //用户名称
dtAllPeopleInfoData.Columns.Add("TelNumber"); //联系电话
dtAllPeopleInfoData.Columns.Add("UserDealer"); //公司名称
dtAllPeopleInfoData.Columns.Add("DealerAddress"); //公司地址
dtAllPeopleInfoData.Columns.Add("RegisterTime"); //注册时间
DataRow row = null;
int peopleTotalNumbers = 0; //当前导出人员信息的总数
List<Ctrl_PeopleInfoData> _PeopleInfoDatas = new List<Ctrl_PeopleInfoData>();//当前需要导出的人员信息集合
peopleTotalNumbers = Ctrl_CommonPeopleInfoOperation.GetInstance().QueryPeopleInfoTotalNumbers();//人员总数
_PeopleInfoDatas = Ctrl_CommonPeopleInfoOperation.GetInstance().QueryAllPeopleInfoOfIndexAndDisplyNumbers(0, peopleTotalNumbers);
for (int i = 0; i < peopleTotalNumbers; i++)
{
row = dtAllPeopleInfoData.NewRow();
row["Number"] = i + 1;
row["ID"] = _PeopleInfoDatas[i].ID;
row["UserName"] = _PeopleInfoDatas[i].UserName;
row["TelNumber"] = _PeopleInfoDatas[i].TelNumber;
row["UserDealer"] = _PeopleInfoDatas[i].UserDealer;
row["DealerAddress"] = _PeopleInfoDatas[i].DealerAddress;
row["RegisterTime"] = _PeopleInfoDatas[i].RegisterTime;
dtAllPeopleInfoData.Rows.Add(row);
}
return dtAllPeopleInfoData;
}
//维修计划
private DataTable RepairPlan()
{
DataTable dtAllInfoData = new DataTable();
dtAllInfoData.Columns.Add("Number"); //数据序号
dtAllInfoData.Columns.Add("RepairPartName"); //维修部件
dtAllInfoData.Columns.Add("RepairTime"); //维修时间
dtAllInfoData.Columns.Add("RepairName"); //维修人员
dtAllInfoData.Columns.Add("IsRepair"); //是否维修
dtAllInfoData.Columns.Add("IsPass"); //是否通过
dtAllInfoData.Columns.Add("RepairContent"); //维修内容
//dtAllInfoData.Columns.Add("AuditorName"); //审核人员
DataRow row = null;
int TotalNumbers = 0; //当前导出维修计划信息的总数
List<Ctrl_View_RepairPlan_Data> _View_RepairPlan_Datas = new List<Ctrl_View_RepairPlan_Data>();//当前需要导出的维修计划信息集合
TotalNumbers = Ctrl_CommonView_RepairPlanOperation.GetInstance().QueryRepairPlanTotalNumbers();//维修计划总数
_View_RepairPlan_Datas = Ctrl_CommonView_RepairPlanOperation.GetInstance().QueryAllRepairPlanOfIndex(0, TotalNumbers);
for (int i = 0; i < TotalNumbers; i++)
{
row = dtAllInfoData.NewRow();
row["Number"] = i + 1;
row["RepairPartName"] = _View_RepairPlan_Datas[i].RepairPartName;
row["RepairTime"] = _View_RepairPlan_Datas[i].RepairTime;
row["RepairName"] = _View_RepairPlan_Datas[i].RepairName;
row["IsRepair"] = _View_RepairPlan_Datas[i].IsRepair;
row["IsPass"] = _View_RepairPlan_Datas[i].IsPass;
row["RepairContent"] = _View_RepairPlan_Datas[i].RepairContent;
//row["AuditorName"] = _View_RepairPlan_Datas[i].AuditorName;
dtAllInfoData.Rows.Add(row);
}
return dtAllInfoData;
}
private void ExportData(string filepath)
{
//DataTable table = PeopleInfo();
DataTable table = RepairPlan();
//string[] strFields = { "Number", "ID", "UserName", "TelNumber", "UserDealer", "DealerAddress", "RegisterTime"};
//string[] strFieldsName = {"序号", "编号", "用户名称", "联系电话", "使用厂商", "使用商地址", "注册时间"};
//NPOIHelper.Write(table, "人员信息表", "人员信息表", strFields, strFieldsName, "人员信息表", filepath);
string[] strFields = { "Number", "RepairPartName", "RepairTime", "RepairName", "IsRepair", "IsPass", "RepairContent" };
string[] strFieldsName = { "序号", "维修部件名称", "维修时间", "维修人员", "是否维修", "是否通过", "维修内容" };
NPOIHelper.ExportExcel(table, "维修计划表", "维修维修计划表", strFields, strFieldsName, "维修计划表", filepath);
Debug.Log("输出完成");
}
}
}
四、导出效果图如下
注意：本文内容参考：https://my.oschina.net/weisenz/blog/200653
NPOI导出Excel表功能实现(多个工作簿)：http://www.cnblogs.com/zhengjuzhuan/archive/2010/02/01/1661103.html
在 Server 端存取 Excel 檔案的利器：NPOI Library：http://msdn.microsoft.com/zh-tw/ee818993.aspx
ASP.NET使用NPOI类库导出Excel：http://www.cnblogs.com/niunan/archive/2010/03/30/1700706.html