title: req.body throws an empty {}
body: <p>I am using <code>body-parser</code> but it's not working and I don't know what the problem is.</p>
  
  <p><strong>app.js</strong></p>
  
  <pre><code>var createError = require('http-errors');
  var express = require('express');
  var path = require('path');
  var cookieParser = require('cookie-parser');
  var logger = require('morgan');
  const bodyParser = require('body-parser');
  
  var indexRouter = require('./routes/index');
  var usersRouter = require('./routes/users');
  
  var app = express();
  
  //bodyParser
  app.use(bodyParser.json());      
  app.use(bodyParser.urlencoded({extended: true}));
  
  
  // view engine setup
  app.set('views', path.join(__dirname, 'views'));
  app.set('view engine', 'hbs');
  
  app.use(logger('dev'));
  app.use(express.json());
  app.use(express.urlencoded({ extended: false }));
  app.use(cookieParser());
  
  app.use(express.static(path.join(__dirname, 'public')));
  app.use('/', indexRouter);
  app.use('/users', usersRouter);
  
  // catch 404 and forward to error handler
  app.use(function(req, res, next) {
    next(createError(404));
  });
  
  // error handler
  app.use(function(err, req, res, next) {
    // set locals, only providing error in development
    res.locals.message = err.message;
    res.locals.error = req.app.get('env') === 'development' ? err : {};
  
    // render the error page
    res.status(err.status || 500);
    res.render('error');
  });
  
  module.exports = app;
  
  </code></pre>
  
  <p><strong>index.js</strong></p>
  
  <pre><code>var express = require('express');
  var router = express.Router();
  
  /* GET home page. */
  router.get('/', redirection, function(req, res, next) {
      res.redirect('index', {title: 'Home'});
  });
  
  router.get('/country', function(req, res, next) {
      // CountryName
  
      res.render('country',
     { 
       title: 'Home',
       mainJS: 'main.js',
       //country: req.body.countries
      });
  
      console.log(req.body)
  });
  
  function redirection(req, res){
      if (req.url == '/'){
          res.redirect('/country');
      }
  }
  
  module.exports = router;
  
  </code></pre>
  
  <p>In this code it throws {}</p>
  
  <p>What is the problem?</p>