Express frame routing

Routing ( Routing ) is a URI of the (or call path) and a specific HTTP methods ( GET , POST , etc.) consisting of, related to how the application responds to the client access to a Web site node

Simple routing configuration

When using get when requesting access to a Web site, do something:

 
app.get("网址",function(req,res){
});

When a post when accessing a URL, do something:

 
app.post ( "URL", function (REQ, RES) { 
});

// user node to accept PUT requests

app.put('/user', function (req, res) {
　　res.send('Got a PUT request at /user');
 });

// user node accepts DELETE request

 

app.delete('/user', function (req, res) {
 
    res.send('Got a DELETE request at /user'); 
});

 

Dynamic routing configuration:

app.get( ,function(req,res){ var id = req.params["id"];
  res.send(id); 
});
 

Routing regular match:

app.get('/ab*cd', function(req, res) { 
　　res.send('ab*cd');
});

Routing inside Gets Get by value

app.get('/news, function(req, res) { 
　　console.log(req.query);
});

Case:

/ * * 
 * The Created by Administrator ON 2017/8/5 0005. 
 * / 
/ * 

1.CD to the project which 
2.npm init --yes / npm init create package.json 
3. Express install 
 npm install Express --save 
 CNPM --save express the install 
4. express introduced using 
var = express the require ( 'express'); 
var = new new App express () 
app.get ( '', function (REQ, RES) { 

}) 

* 
* * / 

var express = the require ( 'Express'); / * introducing * / 

var App = new new Express ();   / * instantiate * / 


app.get ( '/', function (REQ, RES) { 

    res.send ('Hello Express' ); 
}) 


app.get ( '/ News', function (REQ, RES) { 

    res.send ( 'News module' ); 
}) 


app.get ( '/ Login', function (REQ, RES) { 

    res.send ( 'log block' ); 
}) 

app.get ( '/ Register', function (REQ, RES) { 

    res.send ( 'registration module' ); 
}) 
// POST 
// App. POST ( '/ doLogin', function (REQ, RES) { 
// 
// }) 

// dynamic routing 
app.get ( '/ newscontent /: AID', function (REQ, RES) { 

    //req.params value acquired dynamic routing pass 
    the console.log (req.params); 

    var AID = req.params.aid; 

    res.send ( 'newscontent module -' + AID); 
}) 

app.listen ( 3000, ' 127.0.0.1 ');