Check for Middleware Order

The order in which middleware is applied in your Express application matters. If body parsing middleware is placed after your route handlers, the request body might not be processed before reaching your route logic.

Ensure that the middleware for parsing the request body is added before your route definitions. Here’s an example:

const express = require('express');
const bodyParser = require('body-parser');
const app = express();
// Body parsing middleware should come before route handlers
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));
// Routes
app.post('/api/postData', (req, res) => {
  const data = req.body;
  res.json({ receivedData: data });
});

By organizing your middleware in the correct order, you allow the body parsing middleware to process the request body before it reaches your route, ensuring that the data is correctly parsed and accessible within your route handler.

Encountering difficulties when attempting to send a request body from Postman to your Express application can be a frustrating experience. This issue may manifest in various ways, such as empty request bodies or unexpected behavior on the server side. In this troubleshooting guide, we will explore different approaches to resolve this problem and ensure seamless communication between Postman and your Express application.

Following are the different approaches we will use to resolve the error: