尝试发送POST请求时收到404错误开发者社区

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{
    "name":"Harry Potter 5",
    "price":"12.99"
}

const express = require('express');
const app = express();
const morgan = require('morgan');
const productRoutes = require('./api/routes/product');
const orderRoutes = require('./api/routes/order');
const bodyParser = require('body-parser');
app.use(morgan('dev'));
app.use(bodyParser.urlencoded({
    extended:false
app.use(bodyParser.json());
app.use((req, res, next) => {
    const error = new Error("Not found");
    error.status = 404;
    next(error);
  app.use((error, req, res, next) => {
    res.status(error.status || 500);
    res.json({
      error: {
        message: error.message
app.use('/products', productRoutes);
app.use('/orders', orderRoutes);
module.exports = app;

const express = require('express');
const router = express.Router();
router.get('/', (req, res, next) => {
    res.status(200).json({
        message: 'Handling GET requests to /products'
router.post('/', (req, res, next) => {
    const product = {
        name: req.body.name,
        price: req.body.price
    res.status(201).json({
        message: 'Handling POST requests to /products',
        createdProduct: product
router.get('/:productId', (req, res, next) => {
    const id = req.params.productId;
    if (id === 'special') {
        res.status(200).json({
            message: 'You discovered the special ID',
            id: id
    } else {
        res.status(200).json({
            message: 'You passed an ID'
router.patch('/:productId', (req, res, next) => {
    res.status(200).json({
        message: 'Updated product!'
router.delete('/:productId', (req, res, next) => {
    res.status(200).json({
        message: 'Deleted product!'
module.exports = router;

const express = require('express');
const app = express();
const bodyParser = require('body-parser');
app.use(bodyParser.urlencoded({
    extended:false
app.use(bodyParser.json());
app.use((req, res, next) => {
  console.log("Got into 404 handler");
  const error = new Error("Not found");
  error.status = 404;
  next(error);
app.use((error, req, res, next) => {
  console.log("Got into 500 handler");
  res.status(error.status || 500);
  res.json({
    error: {
      message: error.message
app.use('/products', (req, res, next) => {
  console.log("Got into 200 handler");
  res.status(200).end();
app.listen(8080);

const express = require('express');
const app = express();
const bodyParser = require('body-parser');
app.use(bodyParser.urlencoded({
    extended:false
app.use(bodyParser.json());
/* there used to be the 404 callback here */
app.use((error, req, res, next) => {
  console.log("Got into 500 handler");
  res.status(error.status || 500);
  res.json({
    error: {
      message: error.message
app.use('/products', (req, res, next) => {
  console.log("Got into 200 handler");
  res.status(200).end();
app.listen(8080);

const express = require('express');
const app = express();
const bodyParser = require('body-parser');
app.use(bodyParser.urlencoded({
    extended:false
app.use(bodyParser.json());
app.use('/products', (req, res, next) => {
  console.log("Got into 200 handler");
  res.status(200).end();
app.use((req, res, next) => {
  console.log("Got into 404 handler");
  const error = new Error("Not found");
  error.status = 404;
  next(error);
app.use((error, req, res, next) => {
  console.log("Got into 500 handler");
  res.status(error.status || 500);
  res.json({
    error: {
      message: error.message

问 尝试发送POST请求时收到404错误

回答 1

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