使用Pug模板+Nodemailer发送邮件时图片无法显示的问题求助

我在使用Pug创建邮件模板并通过Nodemailer发送邮件时遇到问题：邮件无法显示图片，反而呈现原始代码。我的server.js已配置静态资源服务，图片可通过http://localhost:5001/images/user.jpg在浏览器正常访问，初始Pug模板中图片路径为'/public/images/user.jpg'。

经调整后问题解决，以下是可行的完整代码：

1. server.js #

const path = require('path');    
// 托管public目录下的所有静态文件
app.use(express.static('public'));

2. contactusController.js #

const contactUsModel = require('../models/contactUsModel');
const nodemailer = require("nodemailer");
const path = require('path');
require("dotenv").config();
const pug = require('pug')

3. 邮件配置（mailOptions） #

const mailOptions = {
    from: process.env.EMAIL,
    to: process.env.EMAIL_TO,
    subject: `${name} Contacted!`,
    html: pug.renderFile(__dirname + '/../views/customerEnquiry.pug', {
        name: `${name}`,
        mobileNos:`${mobileNos}`,
        alternateMobileNos:`${alternateMobileNos}`,
        email:`${email}`,
        description:`${description}`
    }),
    attachments: [
        {
            filename: 'user.jpg',
            // 配置正确的文件路径
            path: path.join(__dirname, '../public/images/user.jpg'),
            cid: 'user', // 自定义唯一标识，用于Pug模板中引用
        }
    ],
};

transporter.sendMail(mailOptions, (error, info) => {
    if (error) {
        console.log('发送邮件时出错 :', error);                    
    }
    console.log('邮件发送成功!');                 
    responseReturn(res, 201, {message: '感谢您的咨询，我们会尽快与您联系!'}) 
});

4. Pug模板文件 #

i) views/_styles.pug #

style.
    h2{
        color:black;        
    }
    h3{
        color:grey;
    }
    .footer{
        color:black;
        font-size:15px;
        font-weight: bold;
    }
    .header img {
        height: 111px;
        width: 183px;
    }

ii) views/baseMessage.pug #

html(lang="en")
  head
    meta(charset="UTF-8")
    meta(name="viewport", content="width=device-width, initial-scale=1.0")
    title New Enquiry

    include _styles
  body
    .header
        img(src='cid:user' , alt='logo') // 通过cid引用附件中的图片

    block content

    .footer
        | Regards,
        br
        | Company Name
        br
        | website: abc.com

iii) views/customerEnquiry.pug #

extends baseMessage

block content
    h2 Client Details are as below:
    h3 Name: #{name}
    h3 Mobile: #{mobileNos}
    h3 Alternate Mobile Number: #{alternateMobileNos}
    h3 Email: #{email}
    h3 Description: #{description}

内容的提问来源于stack exchange，提问作者Radheshyam Kori