Unity | Use NPOI to output Word files with text and pictures according to the template

The core code is as follows

using System.Collections.Generic;
using System.IO;
using NPOI.XWPF.UserModel;
using UnityEngine;
using Debug = UnityEngine.Debug;

/// <summary>
/// NPOI库的桥接代码辅助器
/// </summary>
public static class NPOIHelper
{
    
    
    #region docx

    /// <summary>
    /// 通过识别模板中的关键字，进行图文替换
    /// </summary>
    public static void ReplaceByKeywords(List<OutputConfigData> datas, string templatePath, string outputPath)
    {
    
    
        if (!File.Exists(templatePath))
        {
    
    
            Debug.Log($"> output list word template cant find");
            return;
        }

        FileStream fs = new FileStream(templatePath, FileMode.Open, FileAccess.Read);
        XWPFDocument doc = new XWPFDocument(fs);

        foreach (var para in doc.Paragraphs)
        {
    
    
            Replace(para, datas);
        }

        foreach (var table in doc.Tables)
        {
    
    
            foreach (var row in table.Rows)
            {
    
    
                foreach (var cell in row.GetTableCells())
                {
    
    
                    Replace(cell.Paragraphs[0], datas);
                }
            }
        }

        FileStream output = new FileStream(outputPath, FileMode.Create);
        doc.Write(output);

        fs.Close();
        fs.Dispose();
        output.Close();
        output.Dispose();
    }

    /// <summary>
    /// 替换模板内容
    /// </summary>
    /// <param name="paragraph"></param>
    /// <param name="datas"></param>
    static void Replace(XWPFParagraph paragraph, List<OutputConfigData> datas)
    {
    
    
        string oldText = paragraph.ParagraphText;
        if (string.IsNullOrEmpty(oldText))
        {
    
    
            return;
        }
        
        foreach (var data in datas)
        {
    
    
            string newText = string.Empty;
            if (oldText.Contains(data.Key))
            {
    
    
                if (data.Type == OutputConfigType.Text)
                {
    
    
                    newText = oldText.Replace(data.Key, data.Value);
                    // 文本内容替换
                    paragraph.ReplaceText(oldText, newText);
                }
                else if(data.Type == OutputConfigType.Picture)
                {
    
    
                    // 先把标识的文本替换为empty
                    paragraph.ReplaceText(oldText, newText);
                    using FileStream fs = new FileStream(data.Path, FileMode.Open, FileAccess.Read);
                    // 再去添加为图片
                    paragraph.Runs[0].AddPicture(fs, (int)PictureType.PNG, Path.GetFileName(data.Path), data.Width,
                        data.Height);
                }
            }
   
        }
    }
    
    #endregion
}