Nodejs教程-Express.js 路由

时间: 2023-08-31

路由是由单词 "route" 构成的。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特定的路由、URI 或路径以及特定的 HTTP 请求方法（GET、POST 等）。它可以处理不同类型的 HTTP 请求。

让我们通过一个示例来了解基本的路由。

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.');
});

// 这将对 abcd、abxcd、ab123cd 等进行匹配
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);
});