Express.js - guide with Request Body Parsing on Nested Routes with Custom Middleware
I'm trying to implement I'm building a feature where I've encountered a strange issue with I need help solving I've been working on this all day and I'm running into a question where my nested routes in Express.js aren't correctly parsing the request body when I use a custom middleware function... I have a setup where I'm using Express 4.17.1 along with body-parser 1.19.0. My custom middleware is supposed to log the request body for debugging, but it seems to interfere with the JSON parsing for nested routes. Here’s a simplified version of what my code looks like: ```javascript const express = require('express'); const bodyParser = require('body-parser'); const app = express(); app.use(bodyParser.json()); // Custom middleware to log the request body app.use((req, res, next) => { console.log('Request Body:', req.body); next(); }); app.post('/api/users', (req, res) => { res.json({ message: 'User created', data: req.body }); }); app.post('/api/users/:userId/orders', (req, res) => { res.json({ message: 'Order created for user', data: req.body }); }); const PORT = process.env.PORT || 3000; app.listen(PORT, () => { console.log(`Server running on port ${PORT}`); }); ``` When I send a POST request to `/api/users` with a JSON body like `{'name': 'John'}`, it works perfectly. But when I try to send a POST request to `/api/users/123/orders` with a JSON body like `{'item': 'Book'}`, the `req.body` is coming back as `{}` and I get a response like this: ``` { "message": "Order created for user", "data": {} } ``` I've checked and verified that the request being sent is correct. I tried moving the custom middleware below the bodyParser middleware, but that didn't change anything. I also ensured that I'm sending the requests with the correct `Content-Type: application/json` header. Is there something I'm missing? Why isn't the body being parsed correctly on the nested route? Any insights would be appreciated! I'm developing on Linux with Javascript. Is there a simpler solution I'm overlooking? For reference, this is a production web app. Any examples would be super helpful. I'm working on a CLI tool that needs to handle this. I'm open to any suggestions. The stack includes Javascript and several other technologies. Cheers for any assistance!