无法从我的客户端（react.js）获取数据（node.js）

Question

I'm not able to retrieve the data I'm sending from the client to the server.

My react code is the following:

axios.post('http://localhost:5000/post-entry', { data: formData })
.then(res => {
  console.log(res);
})

My server code is the following:

app.post('/post-entry', (req, res) => {
  console.log(req.data, "res.body.data here");
});

When it reaches the post on my server, the log is undefined .

What am I doing wrong?

Answer 1

If formData is a JS object, just axios.post('http://localhost:5000/post-entry', formData) is enough. You can access this object on server side by req.body . But ExpressJS needs a middleware to parse request bodies. You have to use app.use(express.json()) or app.use(bodyParser.json()) where bodyParser is body-parser .