NPOI的使用（着重word文档的写入）
作者：互联网
之前用NPOI做word文档的导出，查询了大量资料，在此做一记录
不做过多讲解 直接上代码（word导出当中有一些业务处理，查看时自行甄别）
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using NPOI.HSSF.UserModel;
using NPOI.HPSF;
using NPOI.POIFS.FileSystem;
using System.IO;
using System.Reflection;
using NPOI.SS.UserModel;
using System.Data;
using NPOI.XSSF.UserModel;
using NPOI.XWPF.UserModel;
using Models;
using IBLL;
using Models.Common.Helpers;
using Models.Common;
using NPOI.OpenXmlFormats.Wordprocessing;
using System.Web.Caching;
namespace MOM.Helpers
{
public class NPOIHelper
{
public NPOIHelper()
{
}
private static HSSFWorkbook hssfworkbook;
public static IOrgChkBLL OrgChkBLL { get; set; }
public static IFileInfBLL FileInfBLL { get; set; }
/// 初始化
/// </summary>
private static void InitializeWorkbook()
{
hssfworkbook = new HSSFWorkbook();
DocumentSummaryInformation dsi = PropertySetFactory.CreateDocumentSummaryInformation();
dsi.Company = "";
hssfworkbook.DocumentSummaryInformation = dsi;
SummaryInformation si = PropertySetFactory.CreateSummaryInformation();
si.Subject = "";
hssfworkbook.SummaryInformation = si;
}
/**//// <summary>
/// DataTable写入Excel
/// </summary>
/// <param name="FileName">要保存的文件名称 eg:test.xls</param>
/// <param name="SheetName">工作薄名称</param>
/// <param name="dt">要写入的DataTable </param>
public static void WriteToDownLoad(string FileName, string SheetName, DataTable dt, List<string> lstTitle)
{
string filename = FileName;
HttpContext.Current.Response.ContentType = "application/vnd.ms-excel";
//HttpContext.Current.Response.AddHeader("Content-Disposition", string.Format("attachment;filename={}", filename));
HttpContext.Current.Response.Clear();
//初始化Excel信息
InitializeWorkbook();
//填充数据
DTExcel(SheetName, dt, lstTitle);
HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8).ToString());
HttpContext.Current.Response.BinaryWrite(WriteToStream().GetBuffer());
HttpContext.Current.Response.End();
}
/// <summary>
/// lstTitle 设置表头
/// </summary>
/// List写入Excel
/// </summary>
/// <typeparam name="T">实体</typeparam>
/// <param name="FileName">要保存的文件名称 eg:test.xls</param>
/// <param name="SheetName">工作薄名称</param>
/// <param name="lst">要写入的List</param>
public static void WriteToDownLoad<T>(string FileName, string SheetName, IList<T> lst, List<string> lstTitle)
{
string filename = FileName;
HttpContext.Current.Response.ContentType = "application/vnd.ms-excel";
// HttpContext.Current.Response.AddHeader("Content-Disposition", string.Format("attachment;filename={0}", FileName));
HttpContext.Current.Response.Clear();
HttpContext.Current.Response.AppendHeader("Content-Disposition", "attachment;filename=" + HttpUtility.UrlEncode(FileName, System.Text.Encoding.UTF8).ToString());
//初始化Excel信息
InitializeWorkbook();
//填充数据
ListExcel<T>(SheetName, lst, lstTitle);
HttpContext.Current.Response.BinaryWrite(WriteToStream().GetBuffer());
HttpContext.Current.Response.End();
}
private static MemoryStream WriteToStream()
{
MemoryStream file = new MemoryStream();
hssfworkbook.Write(file);
return file;
}
#region 数据填充部分
/// 将DataTable数据写入到Excel
/// </summary>
/// <param name="SheetName"></param>
/// <param name="dt"></param>
/// <param name="lstTitle"></param>
private static void DTExcel(string SheetName, DataTable dt, List<string> lstTitle)
{
ISheet sheet = hssfworkbook.CreateSheet(SheetName);
int y = dt.Columns.Count;
int x = dt.Rows.Count;
//给定的标题为空,赋值datatable默认的列名
if (lstTitle == null)
{
lstTitle = new List<string>();
for (int ycount = 0; ycount < y; ycount++)
{
lstTitle.Add(dt.Columns[ycount].ColumnName);
}
}
IRow hsTitleRow = sheet.CreateRow(0);
//标题赋值
for (int yt = 0; yt < lstTitle.Count; yt++)
{
hsTitleRow.CreateCell(yt).SetCellValue(lstTitle[yt]);
}
//填充数据项
for (int xcount = 1; xcount < x; xcount++)
{
IRow hsBodyRow = sheet.CreateRow(xcount);
for (int ycBody = 0; ycBody < y; ycBody++)
{
hsBodyRow.CreateCell(ycBody).SetCellValue(dt.DefaultView[xcount - 1][ycBody].ToString());
}
}
}
private static void ListExcel<T>(string SheetName, IList<T> lst, List<string> lstTitle)
{
ISheet sheet = hssfworkbook.CreateSheet(SheetName);
T _t = (T)Activator.CreateInstance(typeof(T));
PropertyInfo[] propertys = _t.GetType().GetProperties();
//给定的标题为空,赋值T默认的列名
if (lstTitle == null)
{
lstTitle = new List<string>();
for (int ycount = 0; ycount < propertys.Length; ycount++)
{
lstTitle.Add(((System.Reflection.MemberInfo)(propertys[ycount])).Name);//获取实体中列名称,去掉列类型
}
}
IRow hsTitleRow = sheet.CreateRow(0);
//获取title设置列
int lstcount = lstTitle.Count();
//标题赋值
for (int yt = 0; yt < lstTitle.Count; yt++)
{
hsTitleRow.CreateCell(yt).SetCellValue(lstTitle[yt]);
}
//填充数据项
for (int xcount = 0; xcount < lst.Count; xcount++)
{
IRow hsBodyRow = sheet.CreateRow(xcount + 1);
for (int ycBody = 0; ycBody < lstcount; ycBody++)
{
PropertyInfo pi = propertys[ycBody];
object obj = pi.GetValue(lst[xcount], null);
hsBodyRow.CreateCell(ycBody).SetCellValue(obj.ToString());
}
}
}
#endregion 数据填充部分
/// <summary>
/// 将Excel导入DataTable
/// </summary>
/// <param name="filepath">导入的文件路径（包括文件名）</param>
/// <param name="sheetname">工作表名称</param>
/// <param name="isFirstRowColumn">第一行是否是DataTable的列名</param>
/// <param name="numRow">从第几行开始导入</param>
/// <returns>DataTable</returns>
public static DataTable ExcelToDataTable(string filepath, Stream file, string sheetname, bool isFirstRowColumn, int numRow)
{
numRow = numRow < 1 ? 0 : numRow - 1;
ISheet sheet = null;//工作表
DataTable data = new DataTable();
IWorkbook workbook = null;
var startrow = 0;
using (file)
{
try
{
if (filepath.IndexOf(".xlsx") > 0) // 2007版本
workbook = new XSSFWorkbook(file);
else if (filepath.IndexOf(".xls") > 0) // 2003版本
workbook = new HSSFWorkbook(file);
if (sheetname != null)
{
sheet = workbook.GetSheet(sheetname);
if (sheet == null) //如果没有找到指定的sheetName对应的sheet，则尝试获取第一个sheet
{
sheet = workbook.GetSheetAt(0);
}
}
else
{
sheet = workbook.GetSheetAt(0);
}
if (sheet != null)
{
IRow firstrow = sheet.GetRow(0);
int cellCount = firstrow.LastCellNum; //行最后一个cell的编号 即总的列数
if (isFirstRowColumn)
{
for (int i = firstrow.FirstCellNum; i < cellCount; i++)
{
NPOI.SS.UserModel.ICell cell = firstrow.GetCell(i);
if (cell != null)
{
string cellvalue = cell.StringCellValue;
if (cellvalue != null)
{
DataColumn column = new DataColumn(cellvalue);
data.Columns.Add(column);
}
}
}
startrow = sheet.FirstRowNum + numRow;
}
else
{
startrow = sheet.FirstRowNum + numRow;
}
//读数据行
int rowcount = sheet.LastRowNum;
for (int i = startrow; i <= rowcount; i++)
{
IRow row = sheet.GetRow(i);
if (row == null)
{
continue; //没有数据的行默认是null
}
DataRow datarow = data.NewRow();//具有相同架构的行
for (int j = row.FirstCellNum; j < cellCount; j++)
{
if (row.GetCell(j) != null)
{
//如果是公式Cell
//则仅读取其Cell单元格的显示值 而不是读取公式
if (row.GetCell(j).CellType == CellType.Formula)
{
row.GetCell(j).SetCellType(CellType.String);
datarow[j] = row.GetCell(j).StringCellValue;
}
else
{
datarow[j] = row.GetCell(j).ToString();
}
}
}
data.Rows.Add(datarow);
}
}
return data;
}
catch (Exception ex)
{
Console.WriteLine("Exception: " + ex.Message);
return null;
}
finally { file.Close(); file.Dispose(); }
}
}
/// <summary>
/// 添加标题样式
/// </summary>
/// <param name="docxDocument"></param>
/// <param name="strStyleId"></param>
/// <param name="headingLevel"></param>
private static void addCustomHeadingStyle(XWPFDocument docxDocument, String strStyleId, int headingLevel)
{
CT_Style ctStyle = new CT_Style();
ctStyle.styleId = strStyleId;
CT_String styleName = new CT_String();
styleName.val = strStyleId;
ctStyle.name = styleName;
CT_DecimalNumber indentNumber = new CT_DecimalNumber();
indentNumber.val = headingLevel.ToString();
// lower number > style is more prominent in the formats bar
ctStyle.uiPriority = indentNumber;
CT_OnOff onoffnull = new CT_OnOff();
ctStyle.unhideWhenUsed = onoffnull;
// style shows up in the formats bar
ctStyle.qFormat = onoffnull;
// style defines a heading of the given level
CT_PPr ppr = new CT_PPr();
ppr.outlineLvl = indentNumber;
ctStyle.pPr = ppr;
XWPFStyle style = new XWPFStyle(ctStyle);
// is a null op if already defined
XWPFStyles styles = docxDocument.CreateStyles();
style.StyleType = ST_StyleType.paragraph;
styles.AddStyle(style);
}
/// <summary>
/// word文档导出（包含业务代码，查看时需甄别）
/// </summary>
/// <param name="CpnID">企业代码</param>
/// <param name="MdlID">模板代码</param>
/// <param name="OrgID">机构代码</param>
/// <param name="PstID1">岗位</param>
/// <param name="ItemIDFat">父级事项代码</param>
/// <param name="ItemIDs">事项代码</param>
/// <param name="Sdt">开始日期</param>
/// <param name="Edt">结束日期</param>
/// <param name="prmFileInf"></param>
/// <param name="IsExplain">是否包含说明</param>
/// <param name="IsPicture">是否包含图片</param>
/// <returns></returns>
public static OperateReturnInfo CreateWordToOrgchkfl(string CpnID,string key, FileInfInfo prmFileInf,List<OrgChkDtlInfo> orgchkdtls)
{
CacheHelper.SetCache(key, 0, Cache.NoAbsoluteExpiration, new TimeSpan(1, 0, 0), CacheItemPriority.High);
try
{
//循环层级，3-1对应1-3，根据层级计算缩进和字体大小
int lvl = 3;// string.IsNullOrWhiteSpace(ItemIDFat) && string.IsNullOrWhiteSpace(ItemIDs) ? 3 : !string.IsNullOrWhiteSpace(ItemIDFat) && ItemIDFat.Length == 4 && string.IsNullOrWhiteSpace(ItemIDs) ? 2 : !string.IsNullOrWhiteSpace(ItemIDFat) && ItemIDFat.Length == 2 && string.IsNullOrWhiteSpace(ItemIDs) ? 3 : 1;
if (lvl == 3)
{
var dtls = orgchkdtls.GroupBy(x => x.firstItem).Select(y => new OrgChkDtlInfo { ItemID = y.Key.Substring(0, y.Key.IndexOf(' ')), ItemName = y.Key.Substring(y.Key.IndexOf(' ')) }).ToList();
var dtls1 = orgchkdtls.GroupBy(x => x.secondItem).Select(y => new OrgChkDtlInfo { ItemID = y.Key.Substring(0, y.Key.IndexOf(' ')), ItemName = y.Key.Substring(y.Key.IndexOf(' ')) }).ToList();
orgchkdtls.AddRange(dtls);
orgchkdtls.AddRange(dtls1);
}
if (lvl == 2)
{
orgchkdtls.ToList().AddRange(orgchkdtls.GroupBy(x => x.secondItem).Select(y => new OrgChkDtlInfo { ItemID = y.Key.Substring(0, y.Key.IndexOf(' ')), ItemName = y.Key.Substring(y.Key.IndexOf(' ')) }));
}
orgchkdtls = orgchkdtls.OrderBy(x => x.ItemID).ToList();
//创建document对象
var doc = new XWPFDocument();
addCustomHeadingStyle(doc, "Heading1", 1);
//创建标题
var ptit = doc.CreateParagraph();//段落
ptit.Alignment = ParagraphAlignment.CENTER; //字体居中
var t = ptit.StyleID;
var runTitle = ptit.CreateRun();
runTitle.SetText(prmFileInf.AttName.Substring(0, prmFileInf.AttName.LastIndexOf('.')));
runTitle.FontSize = 18;
runTitle.IsBold = true;
runTitle.SetFontFamily("宋体", FontCharRange.None); //设置
var itemids = orgchkdtls.GroupBy(x => new { x.ItemID, x.ItemName });
int firindex = 0;
int secindex = 0;
int index = 0;
int writeIndex = 0;
foreach (var item in itemids)
{
writeIndex++;
string nowspace = "";
string nowindex = string.Empty;
int FontSize = 10;
//根据层级产生编号，字体大小
if (item.Key.ItemID.Length == 2 && lvl == 3)
{
FontSize = 14;
firindex++;
nowindex = firindex.ToString();
secindex = 0;
index = 0;
}
else if (item.Key.ItemID.Length == 4)
{
if (lvl == 3)
nowspace = " ";
FontSize = 12;
secindex++;
nowindex = firindex + "-" + secindex;
index = 0;
}
else
{
index++;
FontSize = 10;
if (lvl == 3)
{
nowindex = firindex + "-" + secindex + "-" + index;
nowspace = " ";
}
else if (lvl == 2)
{
nowindex = secindex + "-" + index;
nowspace = " ";
}
else
nowindex = index.ToString();
if (index > 1)//每个事项间隔一行空白
{
var ptit1 = doc.CreateParagraph();//段落
ptit1.Alignment = ParagraphAlignment.CENTER; //字体居中
var runTitle1 = ptit.CreateRun();
runTitle1.SetText("");
}
}
var p = doc.CreateParagraph();//事项段落
p.Alignment = ParagraphAlignment.LEFT;
var run = p.CreateRun();
if (item.Key.ItemID.Length < 6)
run.IsBold = true;
run.SetText(nowspace + nowindex + "、" + item.Key.ItemName);
run.FontSize = FontSize;
run.SetFontFamily("宋体", FontCharRange.CS); //设置字体
p.Style = "Heading1";
if (item.Key.ItemID.Length < 6)
continue;
foreach (var dtl in orgchkdtls.Where(x => x.ItemID == item.Key.ItemID))//添加事项下面所有图片和说明
{
var p1 = doc.CreateParagraph();
var run1 = p1.CreateRun();
run1.SetText(nowspace + dtl.ChrgName);
run1.FontSize = 8;
run1.SetColor("#959595");
run1.SetFontFamily("宋体", FontCharRange.None); //设置字体
if (!string.IsNullOrEmpty(dtl.FileName))
{
string[] files = dtl.FileName.Split(',');
for (int i = 0; i < files.Count(); i++)
{
string path = files[i].Substring(files[i].LastIndexOf('_') + 1);
string imgsavepath = MapPath("/Files/NPOI_" + path);
try
{
S3Helper.DownloadS3File(CpnID + "/" + files[i].Substring(0, (files[i].LastIndexOf('_'))).Replace("_", "/"), files[i].Substring(files[i].LastIndexOf('_') + 1), imgsavepath);
FileStream gfs = new FileStream(imgsavepath, FileMode.Open, FileAccess.Read);
if (gfs != null)
{
var p2 = doc.CreateParagraph();
var run2 = p2.CreateRun();
run2.AddPicture(gfs, (int)NPOI.XWPF.UserModel.PictureType.JPEG, "1.jpg", 4500000, 3000000);
if (i == (files.Count() - 1))
{
run2.AddCarriageReturn();
run2.SetText(nowspace + dtl.UptDtt.ToString("MM月dd日") + " " + dtl.Brf);
run2.SetTextPosition(10);
run2.FontSize = 7;
run2.SetFontFamily("宋体", FontCharRange.None); //设置字体
}
gfs.Close();
}
File.Delete(imgsavepath);
}
catch (Exception)
{
var p2 = doc.CreateParagraph();
var run2 = p2.CreateRun();
if (i == (files.Count() - 1))
{
run2.AddCarriageReturn();
run2.SetText(nowspace + dtl.UptDtt.ToString("MM月dd日") + " " + dtl.Brf);
run2.SetTextPosition(10);
run2.FontSize = 7;
run2.SetFontFamily("宋体", FontCharRange.None); //设置字体
}
}
}
}
else
{
var p2 = doc.CreateParagraph();
var run2 = p2.CreateRun();
run2.SetText(nowspace + dtl.UptDtt.ToString("MM月dd日") + " " + dtl.Brf);
run2.SetTextPosition(10);
run2.FontSize = 7;
run2.SetFontFamily("宋体", FontCharRange.None); //设置字体
}
}
var write = Math.Round((decimal)writeIndex / itemids.Count() * 100, 0);
CacheHelper.SetCache(key, write > 99 ? 99 : write, Cache.NoAbsoluteExpiration, new TimeSpan(1, 0, 0), CacheItemPriority.High);
}
//保存文档至S3
FileStream os = new FileStream(MapPath("/Files/NPOI_" + prmFileInf.KeyVl + ".doc"), FileMode.OpenOrCreate);
doc.Write(os);
string filesavepath = MapPath("/Files/NPOI_" + prmFileInf.KeyVl + ".doc");
FileStream fileStream = new FileStream(filesavepath, FileMode.Open, FileAccess.Read, FileShare.Read);
// 读取文件的 byte[]
byte[] bytes = new byte[fileStream.Length];
fileStream.Read(bytes, 0, bytes.Length);
fileStream.Close();
// 把 byte[] 转换成 Stream
Stream stream = new MemoryStream(bytes);
var dt = DateTime.Now;
string a = S3Helper.UploadToStream(CpnID + "/" + dt.Year + "/" + dt.Month + "/" + "Orgchkfl", Amazon.S3.S3CannedACL.Private, prmFileInf.KeyVl + ".doc", stream);
prmFileInf.Attch = CpnID + "/" + dt.Year + "/" + dt.Month + "/" + "Orgchkfl/" + prmFileInf.KeyVl + ".doc";
File.Delete(filesavepath);
CacheHelper.SetCache(key, 100, Cache.NoAbsoluteExpiration, new TimeSpan(1, 0, 0), CacheItemPriority.High);
}
catch (Exception e)
{
CacheHelper.RemoveCache(key);
foreach (string var in Directory.GetFiles(MapPath("/Files/")))
{
if (var.IndexOf("NPOI_") > -1)
File.Delete(var);
}
return new OperateReturnInfo(OperateCode.Failed, "不合格典型案列生成失败！错误：" + e.Message);
}
FileInfBLL.SaveFileInf(prmFileInf);
return new OperateReturnInfo(OperateCode.Success, "不合格典型案列生成成功！");
}
private static string MapPath(string strPath)
{
if (HttpContext.Current != null)
{
return MapPath(strPath);
}
else //非web程序引用
{
strPath = strPath.Replace("/", "\\");
if (strPath.StartsWith("\\"))
{
//strPath = strPath.Substring(strPath.IndexOf('\\', 1)).TrimStart('\\');
strPath = strPath.TrimStart('\\');
}
return System.IO.Path.Combine(AppDomain.CurrentDomain.BaseDirectory, strPath);
}
}
}
}
标签：word,string,int,lstTitle,NPOI,文档,using,var,new 来源： https://www.cnblogs.com/luing-devil/p/14945849.html