Express js bodyparser发布req.body无法正常工作？

Question

I try to build an api with express js post request. I use body-parser for req.body . But after sending post request i couldn't get any message still loading then show timeout. where is my problem please take a look my code. I am testing it from postman and use on header content-type application/json.

const express = require('express');
const bodyParser = require('body-parser');
const config = require('./config/config.js').get(process.env.NODE_ENV);
const mongoose = require('mongoose');
const app = express();
mongoose.connect(config.DATABASE)
const {Book} = require('./models/book')

app.use(bodyParser.json())

// Post Book
app.post('api/book', (req,res)=>{
    let book = new Book(req.body)

    book.save((err, doc)=>{
        if(err) return res.status(400).send(err);
        res.status(200).json({
            post:true,
            bookId: doc._id
        })
    })
})

Now error show- cannot post /api/book but when i try with this below code its working--

const book = new Book({ name: 'Zildjian' });
book.save().then(() => console.log('data save'));

Answer 1

Change your route from api/book to /api/book - add a leading / .

Also, it looks like it might be timing out as it can't get passed your cookie-parser middleware.

You have passed the function:

app.use(cookieParser)

...but you need to invoke it:

app.use(cookieParser())

You will also need to import it:

const cookieParser = require('cookie-parser')

...or just remove it completely if you don't need it.

I hope this helps.