Node.js 如何在NodeJS中通过POST接收来自Mailgun的消息？

我正在尝试为从mailgun转发的消息设置API端点

在他们的文档中，有一个Django代码示例，如下所示：

# Handler for HTTP POST to http://myhost.com/messages for the route defined above
def on_incoming_message(request):
     if request.method == 'POST':
         sender    = request.POST.get('sender')
         recipient = request.POST.get('recipient')
         subject   = request.POST.get('subject', '')

         body_plain = request.POST.get('body-plain', '')
         body_without_quotes = request.POST.get('stripped-text', '')
         # note: other MIME headers are also posted here...

         # attachments:
         for key in request.FILES:
             file = request.FILES[key]
             # do something with the file

     # Returned text is ignored but HTTP status code matters:
     # Mailgun wants to see 2xx, otherwise it will make another attempt in 5 minutes
     return HttpResponse('OK')

现在，在我的Express应用程序中，我得到了以下代码：

const express = require('express');
const router = express.Router();

// @route   POST api/inbox
// @desc    HTTP handler for messages from mailgun
// @access  public
router.post('/',(req, res) => {
    console.log("REQ PARAMS: ");
    console.log(req.params);
    console.log("REQ BODY: ");
    console.log(req.body);
    console.log("REQ JSON: ");
    console.log(JSON.stringify(req.body));
    const sender = req.body.sender;
    const recipient = req.body.recipient;

    console.log(sender);
    console.log(recipient);

    res.json({success: true});
});


module.exports = router;

这是部署在Heroku上的，当邮枪击中路线时，我得到以下输出：

2019-10-03T09:29:39.558514+00:00 app[web.1]: REQ PARAMS:
2019-10-03T09:29:39.558515+00:00 app[web.1]: {}
2019-10-03T09:29:39.558516+00:00 app[web.1]: REQ BODY:
2019-10-03T09:29:39.558518+00:00 app[web.1]: {}
2019-10-03T09:29:39.558519+00:00 app[web.1]: REQ JSON:
2019-10-03T09:29:39.558521+00:00 app[web.1]: {}
2019-10-03T09:29:39.558522+00:00 app[web.1]: undefined
2019-10-03T09:29:39.558524+00:00 app[web.1]: undefined

---

我不知道我做错了什么，所以我很高兴能得到任何帮助

问题是我使用的是

主体解析器

中间件，而不是

app.use（express.urlencoded（））

我的坏