Node操作mysql

var http = require('http')
var mysql = require('mysql')

var connection = mysql.createConnection({
    host: '121.42.151.190',
    user: 'root',
    password: 'jkxyx205',
    database: 'medical'
})


http.createServer(function(req, res) {

    if ("/favicon.ico" !== req.url) {
        res.writeHeader(200, {"Content-Type": "text/plain"})

        connection.query("SELECT username, truename, email, mobile FROM user where id = '160' or id = '169'", 
            function(err, rows, fields) {

                rows.forEach(function(item) {
                    console.log(item.username);
                })

                res.write(JSON.stringify(rows));

                res.end()
            })
    }

}).listen(3000)

console.log("server start at port 3000... ");