Express.js 路由

2024 年 8 月 29 日 | 阅读 2 分钟

路由是从单词“route”衍生而来。它用于确定应用程序的特定行为。它指定了应用程序如何响应客户端对特定路由、URI 或路径以及特定的 HTTP 请求方法（GET、POST 等）的请求。它可以处理不同类型的 HTTP 请求。

让我们举个例子来看看基本的路由。

文件：routing_example.js

var express = require('express');
var app = express();
app.get('/', function (req, res) {
   console.log("Got a GET request for the homepage");
   res.send('Welcome to JavaTpoint!');
})
app.post('/', function (req, res) {
   console.log("Got a POST request for the homepage");
   res.send('I am Impossible! ');
})
app.delete('/del_student', function (req, res) {
   console.log("Got a DELETE request for /del_student");
   res.send('I am Deleted!');
})
app.get('/enrolled_student', function (req, res) {
   console.log("Got a GET request for /enrolled_student");
   res.send('I am an enrolled student.');
})
// This responds a GET request for abcd, abxcd, ab123cd, and so on
app.get('/ab*cd', function(req, res) {   
   console.log("Got a GET request for /ab*cd");
   res.send('Pattern Matched.');
})
var server = app.listen(8000, function () {
var host = server.address().address
  var port = server.address().port
console.log("Example app listening at http://%s:%s", host, port)
})