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说明：我希望用nodejs 写一个小工具，去除本地txt文件中的html字符，去除字符后生成新的文件，同样保存在桌面 文件的具体位置是C:\Users\Administrator\Desktop\file.txt
step1:C:\Users\Administrator\WebstormProjects\untitled4\file.js
const fs = require('fs');
const path = require('path');
// 定义文件路径
const desktopPath = 'C:\\Users\\Administrator\\Desktop';
const inputFile = path.join(desktopPath, 'file.txt');
const outputFile = path.join(desktopPath, 'clean_file.txt');
// 自定义HTML实体替换规则
const htmlEntities = {'<': '<','>': '>','&': '&','"': '"',''': "'",''': "'",' ': ' ',
};
// 主处理函数
function cleanHtml(filePath) {try {// 读取文件内容const content = fs.readFileSync(filePath, 'utf8');// 分步骤清理内容let cleaned = content// 移除HTML标签.replace(/<[^>]+>/g, '')// 替换HTML实体.replace(/&(?:[a-z]+|#\d+);/gi, (match) =>htmlEntities[match.toLowerCase()] || match)// 清理多余换行和空格.replace(/\n{3,}/g, '\n\n').replace(/ {2,}/g, ' ');// 写入新文件fs.writeFileSync(outputFile, cleaned, 'utf8');console.log(`文件清理完成，已保存至：${outputFile}`);console.log(`清理前字符数：${content.length}`);console.log(`清理后字符数：${cleaned.length}`);console.log(`移除字符数：${content.length - cleaned.length}`);} catch (error) {console.error('处理文件时发生错误：');console.error(error.message);process.exit(1);}
}
// 执行清理
if (require.main === module) {// 检查源文件是否存在if (!fs.existsSync(inputFile)) {console.error(`错误：源文件 ${inputFile} 不存在`);process.exit(1);}console.log('正在清理HTML字符...');cleanHtml(inputFile);
}step2: 运行
PS C:\Users\Administrator\WebstormProjects\untitled4> node file.js
正在清理HTML字符...
文件清理完成，已保存至：C:\Users\Administrator\Desktop\clean_file.txt
清理前字符数：2235
清理后字符数：1697
移除字符数：538下面是用python实现同样的功能 C:\Users\Administrator\PycharmProjects\PythonProject2.venv\Scripts\activate_this.py
from pathlib import Path
import re
import sys# 定义文件路径
desktop_path = Path(r'C:\Users\Administrator\Desktop')
input_file = desktop_path / 'file.txt'
output_file = desktop_path / 'cleans_file.txt'# 自定义HTML实体替换规则
html_entities = {'<': '<','>': '>','&': '&','"': '"',''': "'",''': "'",' ': ' ',
}def clean_html(file_path):try:# 读取文件内容with open(file_path, 'r', encoding='utf-8') as f:content = f.read()# 分步骤清理内容cleaned = content# 移除HTML标签cleaned = re.sub(r'<[^>]+>', '', cleaned)# 替换HTML实体def replace_entity(match):entity = match.text.lower()return html_entities.get(entity, match.text)cleaned = re.sub(r'&(?:[a-z]+|#\d+);',replace_entity,cleaned,flags=re.IGNORECASE)# 清理多余换行和空格cleaned = re.sub(r'\n{3,}', '\n\n', cleaned)cleaned = re.sub(r' {2,}', ' ', cleaned)# 写入新文件with open(output_file, 'w', encoding='utf-8') as f:f.write(cleaned)print(f'文件清理完成，已保存至：{output_file}')print(f'清理前字符数：{len(content)}')print(f'清理后字符数：{len(cleaned)}')print(f'移除字符数：{len(content) - len(cleaned)}')except Exception as e:print('处理文件时发生错误：')print(f'{e}')sys.exit(1)if __name__ == "__main__":# 检查源文件是否存在if not input_file.exists():print(f'错误：源文件 {input_file} 不存在')sys.exit(1)print('正在清理HTML字符...')clean_html(input_file)
end