将Excel转换为word_excel如何将横排变成竖排

2022-09-23 10:28:10 浏览数 (1)

大家好,又见面了,我是你们的朋友全栈君。

本次转换用到了NPOI里面的方法,会经过封装成为dll,在.net平台和unity都测试通过。下面主要讲一下思路:

1.将表格读取为DataTable类型

2.逐行读取DataTable的内容

3.根据读取到内容生成对应的XML表即可。

下面讲述一下具体的实现:

在ReadTable中进行路径设置

代码语言:javascript复制
public class ReadTable
    {
        string tablepath = "";
        public ReadTable(string  path)
        {
            tablepath = path;
        }

        public DataTable TableToDataTable()
        {
            DataTable  table = new DataTable();
            if (tablepath == ""|| tablepath == string.Empty)
            {
                return null;
            }
            else
            {

                if (File.Exists(tablepath))
                {
                    ExcelAnalysis excel = new ExcelAnalysis();
                    table= excel.ExcelToDataTable(tablepath, false);
                }
                else
                {
                    table = null;
                }
                return table;
            }
        }

    }

ExcelAnalysis这个类里面的方法,将表格转换为DataTable

代码语言:javascript复制
using NPOI.HSSF.UserModel;
using NPOI.SS.UserModel;
using NPOI.XSSF.UserModel;
using System;
using System.Data;
using System.IO;
namespace TableToXml
{
    class ExcelAnalysis
    {

        /// <summary>
        /// 将excel导入到datatable
        /// </summary>
        /// <param name="filePath">excel路径</param>
        /// <param name="isColumnName">第一行是否是列名</param>
        /// <returns>返回datatable</returns>
        public DataTable ExcelToDataTable(string filePath, bool isColumnName)
        {
            DataTable dataTable = null;
            FileStream fs = null;
            DataColumn column = null;
            DataRow dataRow = null;
            IWorkbook workbook = null;
            ISheet sheet = null;
            IRow row = null;
            ICell cell = null;

            int startRow = 0;
            try
            {
                using (fs = File.OpenRead(filePath))
                {
                  
                    if (filePath.IndexOf(".xlsx") > 0)
                    {
                        workbook = new XSSFWorkbook(fs);
                    }

                  
                    else if (filePath.IndexOf(".xls") > 0)
                    {
                        workbook = new HSSFWorkbook(fs);
                    }

                    if (workbook != null)
                    {
                        if (workbook.NumberOfSheets > 3)
                        {
                            sheet = workbook.GetSheetAt(4);//读取第三个sheet,也能循环读取每个sheet            
                        }
                        else
                        {
                            sheet = workbook.GetSheetAt(0);//自己的读取默认的第一个           
                        }


                        dataTable = new DataTable();
                        if (sheet != null)
                        {
                            int rowCount = sheet.LastRowNum   1;// 1 包括列名的行,总行数

                            if (rowCount > 0)
                            {
                                IRow firstRow = sheet.GetRow(0);//第一行
                                int cellCount = firstRow.LastCellNum;//列数

                                //构建datatable的列
                                if (isColumnName)
                                {
                                    startRow = 0;//要读取列名则=0 否则=1
                                    for (int i = firstRow.FirstCellNum; i < cellCount;   i)
                                    {
                                        cell = firstRow.GetCell(i);
                                        if (cell != null)
                                        {
                                            if (cell.StringCellValue != null)
                                            {
                                                column = new DataColumn(cell.StringCellValue);
                                                dataTable.Columns.Add(column);
                                            }
                                        }
                                    }
                                }
                                else
                                {
                                    for (int i = firstRow.FirstCellNum; i < cellCount;   i)
                                    {
                                        column = new DataColumn("column"   (i   1));
                                        dataTable.Columns.Add(column);
                                    }
                                }

                                //填充行
                                for (int i = startRow; i < rowCount;   i) //要读取列名则i<rowCount 否则i <= rowCount
                                {
                                    row = sheet.GetRow(i);
                                    if (row == null) continue;

                                    dataRow = dataTable.NewRow();
                                    for (int j = row.FirstCellNum; j < cellCount;   j)
                                    {
                                        cell = row.GetCell(j);
                                        if (cell == null)
                                        {
                                            dataRow[j] = "";
                                        }
                                        else
                                        {
                                            //CellType(Unknown = -1,Numeric = 0,String = 1,Formula = 2,Blank = 3,Boolean = 4,Error = 5,)
                                            switch (cell.CellType)
                                            {
                                                case CellType.Blank:
                                                    dataRow[j] = "";
                                                    break;
                                                case CellType.Numeric:
                                                    short format = cell.CellStyle.DataFormat;
                                                    //对时间格式(2015.12.5、2015/12/5、2015-12-5等)的处理
                                                    if (format == 14 || format == 31 || format == 57 || format == 58)
                                                        dataRow[j] = cell.DateCellValue;
                                                    else
                                                        dataRow[j] = cell.NumericCellValue;
                                                    break;
                                                case CellType.String:
                                                    dataRow[j] = cell.StringCellValue;
                                                    break;
                                            }
                                        }
                                    }
                                    dataTable.Rows.Add(dataRow);
                                }
                            }
                        }
                    }
                    else
                    {
                      // ("文件打开失败,请关闭文档");
                    }
                }
              
                return dataTable;
            }
            catch (Exception e)
            {
           
                if (fs != null)
                {
                    fs.Close();
                }
                return null;
            }
        }
      
    }



}

DataTableToXml 是将读取到的数据源转换为XML,并输出

代码语言:javascript复制
using System;
using System.Data;
using System.Xml;

namespace TableToXml
{
    /// <summary>
    /// 将读取到的datatable存储到XML中
    /// </summary>
   public class DataTableToXml
    {
        DataTable dataTable;
        string xmlPath;
        /// <summary>
        /// 实例化对象
        /// </summary>
        /// <param name="dtb">自行加载的table</param>
        /// <param name="outPath">Xml的输出路径,不填默认输出在桌面上</param>
        public DataTableToXml(DataTable dtb, string outPath="")
        {
            if (outPath==""|| outPath==null)
            {
                outPath = Environment.GetFolderPath(Environment.SpecialFolder.Desktop);
            }
            
            dataTable = dtb;
            xmlPath = outPath;
        }
  

        /// <summary>
        /// 根据数据源生成Xml
        /// </summary>
        /// <param name="path">XML文件的输出路径</param>
        /// <param name="outname">XML文件的输出文件名</param>
        /// <param name="rootname">跟节点的名字</param>
        private void CreateXml(string path,string outname="test",string rootname="root")
        {
            XmlDocument document = new XmlDocument();//创建XmlDocument对象

            XmlDeclaration declaration = document.CreateXmlDeclaration("1.0", "UTF-8", "");//xml文档的声明部分
            document.AppendChild(declaration);       
            XmlElement root = document.CreateElement(rootname);//根节点
            document.AppendChild(root);
            if (dataTable!=null)
            {
                DataRow[] drs = dataTable.Select();
              
                for (int i = 0; i < drs.Length; i  )
                {//行
                    XmlElement zwerks = document.CreateElement("Rows"   i);
                    root.AppendChild(zwerks);
                    for (int j = 0; j < dataTable.Columns.Count; j  )
                    {//列
                      
                        XmlElement tab= document.CreateElement("coloumns" j);
                         tab.InnerText = drs[i][j].ToString();
                        zwerks.AppendChild(tab);
                    }
                }

            }
            document.Save(path  outname   ".xml");//将生成好的xml保存到.xml文件中
        }
        /// <summary>
        /// 将datatable生成Xml,默认存放在桌面上
        /// </summary>
        public void DtoXml(string path)
        {
            CreateXml(path);
        }
    }
}

里面的所有变量都需要在实例化的时候进行赋值

在.net中这样调用即可

在Unity中可将编译后的dll放置在unity 的Plugins文件夹下使用,同样能达到效果,具体如下:

最后我已经将所有需要的dll打包,放置在CSDN了,5个币就可下载(真不贵,我前前后后两天呢),今天六一,能不能赚个棒棒糖呢?如果你没有币可以私信我哦,给你发!!!

下载链接如下:https://download.csdn.net/download/mo_qi_qi/19320074

发布者:全栈程序员栈长,转载请注明出处:https://javaforall.cn/171952.html原文链接:https://javaforall.cn

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