anHui_guoJiaTongBuFuShe_Node/src/util/index.ts

import os from 'os';
import fs from 'fs';
import path from 'path';

// 一些常用的给工具函数

// 1：------------ 获取本机器192xxxx地址
export const getLocalIP = () => {
  const interfaces = os.networkInterfaces();
  for (let interfaceName in interfaces) {
    const interfaceList = interfaces[interfaceName];

    if (interfaceList) {
      for (let i = 0; i < interfaceList.length; i++) {
        const alias = interfaceList[i];
        if (alias.family === 'IPv4' && alias.address !== '127.0.0.1' && !alias.internal) {
          return alias.address;
        }
      }
    }
  }
  return '0.0.0.0';
};

import svgCaptcha from 'svg-captcha';
import dayjs from 'dayjs';

// 2：------------ 生成验证码
export const generateCaptcha = () => {
  const res = svgCaptcha.create({
    size: 4, // 验证码长度
    noise: 2, // 干扰线条数
    color: true, // 验证码字体颜色
    background: '#f0f0f0', // 背景颜色
    ignoreChars: '0oO1ilI', // 排除容易混淆的字符
    width: 120,
    height: 40,
  });

  return res;
};

//3：------------  获取请求者ip 用来确定验证码是否正确
export const ipLocResFu = (req: any) => {
  // 获取IP，并处理可能的IPv6格式
  let rawIp = req.socket.remoteAddress;
  // 简单的处理，如果包含`::ffff:`则去除，否则直接使用
  const clientIp = rawIp && rawIp.replace(/^.*:/, '');
  // console.log('客户端IP:', clientIp);
  return clientIp;
};

//4：------------ 追加内容写入文件
export const AddTxtFileFu = (nowPath: any, fileName: string, content: string) => {
  const filePath = path.join(nowPath, fileName);

  // 在要追加的内容末尾加上换行符 `\n`
  const dataToAppend = dayjs().format('YYYY-MM-DD HH:mm:ss') + '------' + content + '\n';
  fs.appendFile(filePath, dataToAppend, 'utf8', (err) => {
    if (err) {
      return;
    }
  });
};