C#调用NPOI组件读取excel表格数据转为datatable写入word表格中并向word中插入图片/文字/书签 获得书签列表

调用word的com组件将400条数据导入word表格中耗时10分钟简直不能忍受,使用NPOI组件耗时4秒钟.但是NPOI中替换书签内容的功能不知道是不支持还是没找到.

辅助类 Excel表格数据与DataTable互转:

 

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;
using NPOI.HSSF.UserModel;
using System.IO;
using System.Data;

namespace Utils
{
    //http://www.cnblogs.com/luxiaoxun/p/3374992.html
    public class ExcelDataTableConverter : IDisposable
    {
        private string fileName = null; //文件名
        private IWorkbook workbook = null;
        private FileStream fs = null;
        private bool disposed;

        public ExcelDataTableConverter(string fileName)
        {
            this.fileName = fileName;
            disposed = false;
        }

        /// <summary>
        /// 将DataTable数据导入到excel中
        /// </summary>
        /// <param name="data">要导入的数据</param>
        /// <param name="isColumnWritten">DataTable的列名是否要导入</param>
        /// <param name="sheetName">要导入的excel的sheet的名称</param>
        /// <returns>导入数据行数(包含列名那一行)</returns>
        public int DataTableToExcel(DataTable data, string sheetName, bool isColumnWritten)
        {
            int i = 0;
            int j = 0;
            int count = 0;
            ISheet sheet = null;

            fs = new FileStream(fileName, FileMode.OpenOrCreate, FileAccess.ReadWrite);
            if (fileName.IndexOf(".xlsx") > 0) // 2007版本
                workbook = new XSSFWorkbook();
            else if (fileName.IndexOf(".xls") > 0) // 2003版本
                workbook = new HSSFWorkbook();

            try
            {
                if (workbook != null)
                {
                    sheet = workbook.CreateSheet(sheetName);
                }
                else
                {
                    return -1;
                }

                if (isColumnWritten == true) //写入DataTable的列名
                {
                    IRow row = sheet.CreateRow(0);
                    for (j = 0; j < data.Columns.Count; ++j)
                    {
                        row.CreateCell(j).SetCellValue(data.Columns[j].ColumnName);
                    }
                    count = 1;
                }
                else
                {
                    count = 0;
                }

                for (i = 0; i < data.Rows.Count; ++i)
                {
                    IRow row = sheet.CreateRow(count);
                    for (j = 0; j < data.Columns.Count; ++j)
                    {
                        row.CreateCell(j).SetCellValue(data.Rows[i][j].ToString());
                    }
                    ++count;
                }
                workbook.Write(fs); //写入到excel
                return count;
            }
            catch (Exception ex)
            {
                Console.WriteLine("Exception: " + ex.Message);
                return -1;
            }
        }

        /// <summary>
        /// 将excel中的数据导入到DataTable中
        /// </summary>
        /// <param name="sheetName">excel工作薄sheet的名称</param>
        /// <param name="isFirstRowColumn">第一行是否是DataTable的列名</param>
        /// <returns>返回的DataTable</returns>
        public DataTable ExcelToDataTable(string sheetName, bool isFirstRowColumn)
        {
            ISheet sheet = null;
            DataTable data = new DataTable();
            int startRow = 0;
            try
            {
                fs = new FileStream(fileName, FileMode.Open, FileAccess.Read);
                if (fileName.IndexOf(".xlsx") > 0) // 2007版本
                    workbook = new XSSFWorkbook(fs);
                else if (fileName.IndexOf(".xls") > 0) // 2003版本
                    workbook = new HSSFWorkbook(fs);

                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; //一行最后一个cell的编号 即总的列数

                    if (isFirstRowColumn)
                    {
                        for (int i = firstRow.FirstCellNum; i < cellCount; ++i)
                        {
                            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 + 1;
                    }
                    else
                    {
                        startRow = sheet.FirstRowNum;
                    }

                    //最后一列的标号
                    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();
                        for (int j = row.FirstCellNum; j < cellCount; ++j)
                        {
                            if (row.GetCell(j) != null) //同理,没有数据的单元格都默认是null
                            {
                                //dataRow[j] = row.GetCell(j).ToString();  //19890603会显示成MIDB(C2,7,6)
                                dataRow[j] = row.GetCell(j).StringCellValue;
                            }
                        }
                        data.Rows.Add(dataRow);
                    }
                }

                return data;
            }
            catch (Exception ex)
            {
                Console.WriteLine("Exception: " + ex.Message);
                return null;
            }
        }

        public void Dispose()
        {
            Dispose(true);
            GC.SuppressFinalize(this);
        }

        protected virtual void Dispose(bool disposing)
        {
            if (!this.disposed)
            {
                if (disposing)
                {
                    if (fs != null)
                        fs.Close();
                }

                fs = null;
                disposed = true;
            }
        }
    }
}

 

调用:


 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using NPOI.XWPF.UserModel;
using NPOI.OpenXmlFormats.Wordprocessing;
using System.IO;

namespace WordNPOI
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        XWPFDocument doc = new XWPFDocument();

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            Utils.ExcelDataTableConverter edc = new Utils.ExcelDataTableConverter("60岁以上人员.xlsx");
            DataTable dt = edc.ExcelToDataTable("sheet1", true);

            int rowCount = dt.Rows.Count;
            int columnCount = dt.Columns.Count;


            //创建段落对象
            XWPFParagraph p1 = doc.CreateParagraph();
            //创建run对象
            //本节提到的所有样式都是基于XWPFRun的,
            //你可以把XWPFRun理解成一小段文字的描述对象,
            //这也是Word文档的特征,即文本描述性文档。
            //来自Tony Qu http://tonyqus.sinaapp.com/archives/609
            XWPFRun r1 = p1.CreateRun();
            r1.SetBold(true);
            r1.SetText("数据导出demo");
            r1.SetBold(true);
            r1.FontFamily = "宋体";
            r1.FontSize = 26;
            //r1.SetFontFamily("Arial");//设置雅黑字体
            //创建表格对象,行 列
            XWPFTable table = doc.CreateTable(rowCount + 1, columnCount);


            

            //添加列头
            for (int i = 0; i < columnCount; i++)
            {
                var ctt = table.GetRow(0).GetCell(i).GetCTTc();
                var tcPr = ctt.AddNewTcPr();
                tcPr.tcW = new CT_TblWidth();
                tcPr.tcW.w = "6000";//单元格宽 单位是EMU,1英寸= 914400 EMU http://bbs.csdn.net/topics/390906055
                tcPr.tcW.type = ST_TblWidth.dxa;
                //table.SetColumnWidth(i, 5500);  //无效果 特定数字5500又太大 貌似要设置为n*256


                //设置单元格字体 样式 http://www.tuicool.com/articles/JFZzUj
                var p = table.GetRow(0).GetCell(i).AddParagraph();
                
                XWPFRun r = p.CreateRun();
                r.FontFamily = "宋体";
                r.FontSize = 10;
                r.SetBold(true);
                r.SetText(dt.Columns[i].ColumnName);
            }

           


            for (int i = 1; i < rowCount; i++)
            {
                for (int j = 0; j < columnCount; j++)
                {
                    string tem = dt.Rows[i][j].ToString();
                    table.GetRow(i).GetCell(j).SetText(dt.Rows[i][j].ToString());
                }
            }


            //插入图片
            var gfs = new FileStream("1.png", FileMode.Open, FileAccess.Read);
            var gp = doc.CreateParagraph();
            gp.Alignment = ParagraphAlignment.CENTER; //居中
            var gr = gp.CreateRun();
            gr.AddPicture(gfs, (int)PictureType.JPEG, "1.png", 1000000, 1000000); //1000000 差不多100像素多一点
            gfs.Close();


            var gp1 = doc.CreateParagraph();
            gp1.CreateRun().SetText("The End");


            //bookmark书签

            var items = doc.Paragraphs[0].Document.BodyElements;

            //CT_Bookmark b = new CT_Bookmark();
            

            //CT_Bookmark ctBookmark = doc.Paragraphs[0].GetBookmarkStartArray(0);

            //foreach (CT_Bookmark bookmark in doc.Paragraphs[0].GetCTP().GetBookmarkStartList()) //网上的代码,发现找不到这个方法
            //{
            //    Assert.AreEqual("poi", bookmark.name);
            //}




            //书签0开始
            int m_bookId = 0;//同一段内有多个书签,需要不同的Id,不同段的书签Id可以相同

            CT_P m_p = doc.Document.body.AddNewP();

            m_p.AddNewPPr().AddNewJc().val = ST_Jc.both;

            m_p.AddNewPPr().AddNewSpacing().line = "400";//固定行距20磅

            m_p.AddNewPPr().AddNewSpacing().lineRule = ST_LineSpacingRule.exact;

            m_p.Items = new System.Collections.ArrayList();

            CT_Bookmark m_ctbook1 = new CT_Bookmark();

            m_bookId = m_p.Items.Count;

            m_ctbook1.id = m_bookId.ToString(); //"0";

            m_ctbook1.name = "NPOI1";//书签名,超链接用

            m_p.Items.Add(m_ctbook1);

            m_p.ItemsElementName = new List<ParagraphItemsChoiceType>();

            m_p.ItemsElementName.Add(ParagraphItemsChoiceType.bookmarkStart);

            m_p.AddNewR().AddNewT().Value = "1、NPOI介绍";

            //书签0结束

            m_ctbook1 = new CT_Bookmark();

            m_ctbook1.id = m_bookId.ToString();//"0";

            m_p.Items.Add(m_ctbook1);

            m_p.ItemsElementName.Add(ParagraphItemsChoiceType.bookmarkEnd);



            //获得书签
            int pcount = doc.Document.body.ItemsElementName.Count();
            List<CT_Bookmark> bkList = new List<CT_Bookmark>();
            for (int i = 0; i < pcount; i++)
            {
                var ctp = doc.Document.body.GetPArray(i);
                if (ctp!=null)
                {
                    var tempBookMarkList = ctp.GetBookmarkStartList();
                    bkList.AddRange(tempBookMarkList);
                }
            }

            foreach (var bookMark in bkList)
            {//替换书签内容?????????????????找不到示例代码还是不支持此功能?
                bookMark.colFirst = "1";
                bookMark.colLast = "2";
                bookMark.displacedByCustomXmlSpecified = true;

                

                MessageBox.Show(bookMark.name);
                
            }


            //保存文件到磁盘
            FileStream out1 = new FileStream("simpleTable.docx", FileMode.OpenOrCreate);
            doc.Write(out1);
            out1.Close();

            MessageBox.Show("done");
        }
    }
}

 

 

关于宽高设置:

http://www.oschina.net/code/snippet_222150_9780

 
在Excel中,单元格的宽度其实就是列的宽度,因为Excel假设这一列的单元格的宽度肯定一致。所以要设置单元格的宽度,我们就得从列的宽度下手,HSSFSheet有个方法叫SetColumnWidth,共有两个参数:一个是列的索引(从0开始),一个是宽度。
现在假设你要设置B列的宽度,就可以用下面的代码:
HSSFWorkbook hssfworkbook = new HSSFWorkbook();
HSSFSheet sheet1 = hssfworkbook.CreateSheet("Sheet1");
sheet1.SetColumnWidth(1, 100 * 256);
这里你会发现一个有趣的现象,SetColumnWidth的第二个参数要乘以256,这是怎么回事呢?其实,这个参数的单位是1/256个字符宽度,也就是说,这里是把B列的宽度设置为了100个字符。
刚才说的是如何设置,那如何去读取一个列的宽度呢?直接用GetColumnWidth方法,这个方法只有一个参数,那就是列的索引号。如下所示:
int col1width = sheet1.GetColumnWidth(1);
  
说完宽度,我们来说高度,在Excel中,每一行的高度也是要求一致的,所以设置单元格的高度,其实就是设置行的高度,所以相关的属性也应该在HSSFRow上,它就是HSSFRow.Height和HeightInPoints,这两个属性的区别在于HeightInPoints的单位是点,而Height的单位是1/20个点,所以Height的值永远是HeightInPoints的20倍。
要设置第一行的高度,可以用如下代码:
sheet1.CreateRow(0).Height = 200*20;
或者
sheet1.CreateRow(0).HeightInPoints = 200;
如果要获得某一行的行高,可以直接拿HSSFRow.Height属性的返回值。
  
你可能觉得一行一行设置行高或者一列一列设置列宽很麻烦,那你可以考虑使用HSSFSheet.DefaultColumnWidth、HSSFSheet.DefaultRowHeight和HSSFSheet.DefaultRowHeightInPoints属性。
一旦设置了这些属性,如果某一行或者某一列没有设置宽度,就会使用默认宽度或高度。代码如下:
sheet1.DefaultColumnWidth=100*256;
sheet1.DefaultRowHeight=30*20;

 

 

版权声明:本文为博主原创文章,未经博主允许不得转载。

 

posted @ 2015-05-08 14:57  Ace001  阅读(2766)  评论(1编辑  收藏  举报