node Exercise

Item 1: post request to obtain the server response data into the database and presented;

demand:

achieve:

1) project directory structure

2) the server code:

Express the require = const ( 'Express' );
 // introducing user router 
const = userRouter the require ( './ Routers / user.js' );
 // introduced to third intermediate 
const = bodyParser the require ( 'body-Parser' );
 // create a web server 
var server = Express ();
server.listen ( 3001 );
 // hosting static resources to the public directory ister.html 
server.use (express.static ( 'public' ));
 // use middleware post body-parser parses the request data object 
server. use (bodyParser.urlencoded ({
    extended:false
}));
// the user to mount the router / User 
server.use ( '/ User', userRouter);

View Code

3) router Code

// introduced mysql connection pool object 
const = the require the pool ( '../ pool.js' );
Express const = the require ( 'Express' );
 // Create an empty router 
var Router = express.Router ();
 // add routes 
// 1, user registration 
router.post ( '/ register', ( req, res) => {
     // Get the requested data post 
    var obj = req.body;
    console.log(obj);
    // if the username is empty 
    var $ = the uname obj.uname;
     IF (! $ The uname) {
        res.send ({code: 401, MSG: 'The requires the uname' });
         // stop execution continues back 
        return ;
    }
    // determines whether the password is empty 
    var $ upwd = obj.upwd;
     IF (! $ Upwd) {
        res.send({code:402,msg:'upwd requires'});
        return;
    }
    // determines whether the mailbox is empty 
    var $ = In Email obj.email;
     IF (! $ In Email) {
        res.send({code:403,msg:'email requires'});
        return;
    }
    // determines whether the phone is empty 
    var $ Phone = obj.phone;
     IF (! $ Phone) {
        res.send({code:404,msg:'phone requires'});
        return;
    }
    // perform sql statement, the register data into the data table xz_user, a successful response code {: 200 is, MSG: "Register SUC"} 
    pool.query ( "INSERT INTO DEMP (the uname, upwd, In Email, Phone) values ( ????,,,) ", [obj.uname, obj.upwd, obj.email, obj.phone], (ERR, Result) => {
         IF (ERR) the throw ERR;
        console.log(result);

    });
    res.send ( 'registered successfully' );

});
// Export 
module.exports = router;

View Code

4) Connection Pool Code

the require MySQL = const ( 'MySQL' );
 // create a connection pool object 
var the pool = mysql.createPool ({
    host:'127.0.0.1',
    port:'3306',
    user:'****',
    password:'****',
    database:'xz',
    connectionLimit:20
});
// derived connection pool object 
module.exports = pool;

View Code

5) front-end code

<!DOCTYPE html>
<html>
<head>
    <title></title>
</head>
<body>
    <form action="/user/register" method="post">
        用户:<input type="text" name="uname"><br>
        密码:<input type="text" name="upwd"><<
        E-mail:>brinput type="text" name="email"><br>
        手机:<input type="text" name="phone"><br>
        <input type="submit">    
    </form>

</body>
</html>

View Code

Item 1: post request to obtain the server response data into the database and presented;

Guess you like