irc-netcore-api/IRaCIS.Core.Application/Helper/NpoiWordHelper.cs

using IRaCIS.Core.Application.Helper;
using Microsoft.AspNetCore.Hosting;
using Microsoft.AspNetCore.Mvc;
using NPOI.OpenXmlFormats.Wordprocessing;
using NPOI.XWPF.UserModel;
using System.Collections;
using System.Reflection;

namespace IRaCIS.Core.Application.Service;

public static class NpoiWordHelper
{
    public static async Task<IActionResult> TemplateExportWordAsync(string code, object data, IRepository<CommonDocument>? _commonDocumentRepository, IWebHostEnvironment _hostEnvironment)
    {
        //var (physicalPath, fileNmae) = await FileStoreHelper.GetCommonDocPhysicalFilePathAsync(_hostEnvironment, _commonDocumentRepository, code);

        var physicalPath = code;


        using (FileStream stream = File.OpenRead(physicalPath))
        {
            XWPFDocument doc = new XWPFDocument(stream);
            //遍历段落
            foreach (var para in doc.Paragraphs)
            {
                ReplaceKey(para, data);
            }
            //遍历表格
            var tables = doc.Tables;
            foreach (var table in tables)
            {
                //ReplaceTableKey(table, data, "Data");
            }

            foreach (var table in tables)
            {
                foreach (var row in table.Rows)
                {
                    foreach (var cell in row.GetTableCells())
                    {
                        foreach (var para in cell.Paragraphs)
                        {
                            ReplaceKey(para, data);
                        }
                    }
                }
            }

            FileStream out1 = new FileStream("table.docx", FileMode.Create);
            doc.Write(out1);
            out1.Close();
            return new FileStreamResult(stream, "application/msword")
            {
                FileDownloadName = $"replaced_{DateTime.Now.ToString("yyyyMMddHHmmss")}.docx"
            };
        }



      

       
 
     






    }

    private static void ReplaceKey(XWPFParagraph para, object model)
    {
        string text = para.ParagraphText;

        Type t = model.GetType();
        PropertyInfo[] pi = t.GetProperties();
        foreach (PropertyInfo p in pi)
        {
            //$$与模板中$$对应，也可以改成其它符号，比如{$name},务必做到唯一
            if (text.Contains("$" + p.Name + "$"))
            {
                text = text.Replace("$" + p.Name + "$", p.GetValue(model)?.ToString());
            }
        }

        //var runs = para.Runs;
        //string styleid = para.Style;
        //for (int i = 0; i < runs.Count; i++)
        //{
        //    var run = runs[i];
        //    text = run.ToString();
        //    Type t = model.GetType();
        //    PropertyInfo[] pi = t.GetProperties();
        //    foreach (PropertyInfo p in pi)
        //    {
        //        //$$与模板中$$对应，也可以改成其它符号，比如{$name},务必做到唯一
        //        if (text.Contains("$" + p.Name + "$"))
        //        {
        //            text = text.Replace("$" + p.Name + "$", p.GetValue(model)?.ToString());
        //        }
        //    }
        //    runs[i].SetText(text, 0);
        //}
    }




    /// <summary>
    /// 替换表格Key
    /// </summary>
    /// <param name="table"></param>
    /// <param name="list"></param>
    /// <param name="field"></param>

    private static void ReplaceTableKey(XWPFTable table, IList list, String field)
    {
        List<XWPFParagraph> paras = new List<XWPFParagraph>();
        // 获取最后一行数据，最后一行设置值
        Int32 iLastRowIndex = 0;
        for (int iIndex = 0; iIndex < table.Rows.Count; iIndex++)
        {
            if (iIndex == table.Rows.Count - 1)
            {
                iLastRowIndex = iIndex;
                foreach (var cell in table.Rows[iIndex].GetTableCells())
                {
                    foreach (var para in cell.Paragraphs)
                    {
                        paras.Add(para);
                    }
                }
            }
        }
        // 删除最后一行
        table.RemoveRow(iLastRowIndex);

        for (int iIndex = 0; iIndex < list.Count; iIndex++)
        {
            object data = list[iIndex];
            Type t = data.GetType();
            PropertyInfo[] pi = t.GetProperties();
            // 表增加行
            XWPFTableRow m_row = table.CreateRow();
            CT_Row m_NewRow = new CT_Row();
            String text = String.Empty;
            Int32 jIndex = 0;
            paras.ForEach(para =>
            {
                text = para.ParagraphText;
                foreach (PropertyInfo p in pi)
                {
                    if (text.Contains("$" + field + "." + p.Name + "$"))
                    {
                        m_row.GetCell(jIndex).SetText(p.GetValue(data, null).ToString());
                    }
                }
                jIndex++;
            });
            m_row = new XWPFTableRow(m_NewRow, table);
            table.AddRow(m_row);

        }
    }



}