Express.js – app.route() 方法
该方法返回单个路由的实例。这个单一的路由可用于处理带有可选中间件的HTTP动词。该方法主要用于避免重名。app.route()
语法
app.route( )
示例1
创建一个名为“appRoute.js”的文件并复制以下代码片段。创建文件后，使用命令“nodeappRoute.js”运行此代码。
//app.route()演示示例
//导入express模块
var express = require('express');
//初始化express和端口号
var app = express();
var PORT = 3000;
// Creating a get, post & other requests
app.route('/user')
.get((req, res, next) => {
res.send('GET is called');
console.log('GET is called');
})
.post((req, res, next) => {
res.send('POST is called');
console.log('POST is called')
})
.all((req, res, next) => {
res.send('All others are called');
console.log('All others are called')
})
app.listen(PORT, function(err){
if (err) console.log(err);
console.log("Server listening on PORT", PORT);
});点击以下端点/API调用上述函数-
获取http://localhost:3000/user
POSThttp://localhost:3000/user
PUThttp://localhost:3000/user
输出结果
C:\home\node>> node appRoute.js '' '/api' '/api/v1'
示例2
让我们再看一个例子。
//app.route()演示示例
//导入express模块
var express = require('express');
//初始化express和端口号
var app = express();
var PORT = 3000;
// Creating a get, post & other requests
app.route('/api/*')
.get((req, res, next) => {
res.send('GET is called');
console.log('GET is called');
})
.post((req, res, next) => {
res.send('POST is called');
console.log('POST is called')
})
.all((req, res, next) => {
res.send('All others are called');
console.log('All others are called')
})
app.listen(PORT, function(err){
if (err) console.log(err);
console.log("Server listening on PORT", PORT);
});对于上面的函数，你可以在/api/之后调用任何端点，它只会通过上面的函数传递。例如，
http://localhost:3000/api/,
http://localhost:3000/api/v1,
.http://localhost:3000/api/user/path等
输出结果
C:\home\node>> node appRoute.js Server listening on PORT 3000 All others are called GET is called