NodeJs连接Mysql数据库

安装node-mysql：

　　npm install [email protected]
　　npm install node-mysql
　　node程序启动文件app.js：

var express = require('express');
var mysql = require('mysql');
var app = express();
app.use(function(req, res, next){
console.log('%s %s', req.method, req.url);
next();
});
var conn = mysql.createConnection({
host:'localhost',
user:'root',
database:'nodedb',
password:'',
port:3306
});
conn.connect();
app.get('/', function(req, res){
conn.query('SELECT * from news', function(err, rows, fields) {
if (err) throw err;
var data = '';
for(var i = 0; i < rows.length; i++){
data += '<p>' + 'ID：' + rows[i].id + '</p>';
data += '<p>' + 'title：' + rows[i].title + '</p>';
data += '<p>' + 'contents：' + rows[i].contents + '</p>';
data += '<hr />';
}
res.send(data);
});
});
app.listen(3000);
console.log('Listening on port 3000');