Node.js实现连接mysql数据库功能示例

npm install node-mysql

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:'ceshi',
 password:'123456',
 port:3306
});
conn.connect();
app.get('/', function(req, res){
 conn.query('SELECT * from ceshibiao', function(err, rows, fields) {
 if(err) throw err;
 var data = '';
 foreach(rows,function(key,value){
 data += '<p>' + 'contents：' + value.contents + '</p>';
 data += '<hr />';
 }
 res.send(data);
 });
});
app.listen(81);
console.log('Listening on port 81');