将无请求的Node.js中的REST请求主体中的多部分/表单数据文件转换为电子邮件附件格式

问题描述

我想创建一个REST API，允许请求者对包含文件的PATCH多部分/表单数据进行PATCH。服务器提取文件并通过SMTP作为电子邮件附件发送。我有以下代码：

const nodemailer = require('nodemailer');
const smtpTransport = require('nodemailer-smtp-transport');

const username = 'email account'
const password = 'email password'
const smtpHost = 'mailhog'
const smtpPort = 1025

module.exports.endpoint = (event,context,callback) => {

    const mailOptions = {
        from: '[e-mail]',to: '[e-mail]',subject: 'Here is a file',text: 'Please see attached'
    };

    const transporter = nodemailer.createTransport(smtpTransport({
        host: smtpHost,port: smtpPort,secure: false,auth: {
            user: username,pass: password
        }
    }));

    transporter.sendMail(mailOptions,function (error,info) {
        if (error) {
            const response = {
                statusCode: 500,body: JSON.stringify({
                    error: error.message,}),};
            callback(null,response);
        }
        const response = {
            statusCode: 202,headers: {
                "Access-Control-Allow-Origin": "*"
            },body: "Accepted",};
        callback(null,response);
    });
}

是否有很好的方法？

解决方法

使用aws-lambda-multipart-parser，我可以很简单地做到这一点：

use strict';

const multipart = require('aws-lambda-multipart-parser');
const nodemailer = require('nodemailer');
const smtpTransport = require('nodemailer-smtp-transport');

const username = 'email account'
const password = 'email password'
const smtpHost = 'mailhog'
const smtpPort = 1025

module.exports.endpoint = (event,context,callback) => {
    const file = multipart.parse(event,true).file;

    const mailOptions = {
        from: '[e-mail]',to: '[e-mail]',subject: 'Here is a file',text: 'Please see attached',attachments: [
            {
                filename: file.filename,content: file.content,contentType: 'image/png'
            }
        ]
    };

    const transporter = nodemailer.createTransport(smtpTransport({
        host: smtpHost,port: smtpPort,secure: false,auth: {
            user: username,pass: password
        }
    }));

    transporter.sendMail(mailOptions,function (error,info) {
        if (error) {
            const response = {
                statusCode: 500,body: JSON.stringify({
                    error: error.message,}),};
            callback(null,response);
        }
        const response = {
            statusCode: 202,headers: {
                "Access-Control-Allow-Origin": "*"
            },body: "Accepted",};
        callback(null,response);
  }