如何从nuxtjs服务器中间件获取POST数据？

const bodyParser = require('body-parser');

module.exports = function(req, res, next) {
  bodyParser.urlencoded({ extended: true })(req, res, next);
};

serverMiddleware: [
  '~/middleware/postMiddleware'
],

mounted() {
  this.$axios.post('/api/data', { key: 'value' })
    .then(response => {
      console.log(response.data);
    })
    .catch(error => {
      console.error(error);
    });
}

module.exports = function(req, res, next) {
  bodyParser.urlencoded({ extended: true })(req, res, () => {
    console.log(req.body);
    next();
  });
};