安装Mysql

wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm
rpm -ivh mysql-community-release-el7-5.noarch.rpm
yum -y install mysql-server
service mysqld start

mysql -u root
update user set Password=password('123456') where User='root';
service mysqld restart
mysql -u root -p'123456'

创建数据库表

create database test;
use test;
create table user(  
    uid int not null primary key auto_increment,  
    uname varchar(100) not null,  
    pwd varchar(100) not null
)ENGINE=InnoDB DEFAULT CHARSET=utf8;

安装Mysql模块

npm install mysql --g

代码

https://github.com/fengchunjian/nodejs_examples/tree/master/mysql

//mysqlBean.js
var mysql = require("mysql");

var connection = mysql.createConnection({
    host : "localhost",
    user : "root",
    password : "123456",
    database : "test",
    port : "3306"
});

connection.connect(function(err) {
    if (err) {
        console.log("connect failed:" + err);
        return;
    }
    console.log("connect ok");
});

var userAddSql = "insert into user(uname, pwd) values(?, ?)";
var param = ["bbb", "bbb"];
connection.query(userAddSql, param, function(err, rs) {
    if (err) {
        console.log("insert failed:" + err);
        return;
    }
    console.log("insert ok");
});

connection.query("select * from user where uid>?", [0], function(err, rs) {
    if (err) {
        console.log("select failed:" + err);
        return;
    }
    for (var i=0; i<rs.length; i++) {
        console.log("result:" + rs[i].uname);
    }
});

connection.end(function (err) {
    if (err) {
        console.log("end failed:" + err);
        return;
    }
    console.log("end ok");
});

参考文档

node.js教程14_直连mysql
http://edu.51cto.com//center/course/lesson/index?id=124540
nodejs_直连mysql(n14_mysql)
http://www.yuankuwang.com/web/index.php?r=respool/resview&rpid=47
CentOS 7 用yum安装 MySQL
http://www.linuxidc.com/Linux/2016-03/129683.htm