安装mysql模块

npm install mysql

 

数据库准备

mysql server所在的机器IP地址是192.168.0.108，登录账户就用root@123456

在mysql中创建test数据库

在test数据库中创建一张users表

 

操作

连接数据库

var mysql=require('mysql');var connection = mysql.createConnection({    host     : '192.168.0.108',    user     : 'root',    password : '123456',    database : 'test1',    port:'3306'});connection.connect();

 

插入一个user

var usr={name:'zhangsan',password:'pwdzhangsan',mail:'zhangsan@gmail.com'};connection.query('insert into users set ?', usr, function(err, result) {    if (err) throw err;    console.log('inserted zhangsan');    console.log(result);    console.log('\n');});

 

更新user，带条件

connection.query('update users set password="ddd" where name="zhangsan"', {password:'ppp'}, function(err, result) {    if (err) throw err;    console.log('updated zhangsan\'s password to ddd');    console.log(result);    console.log('\n');});

 

删除一个user，带条件

connection.query('delete from  users where name="zhangsan"', {password:'ppp'}, function(err, result) {    if (err) throw err;    console.log('deleted zhangsan');    console.log(result);    console.log('\n');});

 

查询user，所有

connection.query('select * from users', function(err, rows, fields) {    if (err) throw err;    console.log('selected after deleted');    for(var i= 0,usr;usr=rows[i++];){        console.log('user nae='+usr.name + ', password='+usr.password);    }    console.log('\n');});

 

关闭数据库连接

connection.end();

 

基本的CRUD完成

mysql模块的完整功能说明参见官方：

 

全部demo代码

var mysql=require('mysql');var connection = mysql.createConnection({    host     : '192.168.0.108',    user     : 'root',    password : '123456',    database : 'test1',    port:'3306'});connection.connect();var usr={name:'zhangsan',password:'pwdzhangsan',mail:'zhangsan@gmail.com'};connection.query('insert into users set ?', usr, function(err, result) {    if (err) throw err;    console.log('inserted zhangsan');    console.log(result);    console.log('\n');});connection.query('select * from users', function(err, rows, fields) {    if (err) throw err;    console.log('selected after inserted');    for(var i= 0,usr;usr=rows[i++];){        console.log('user nae='+usr.name + ', password='+usr.password);    }    console.log('\n');});connection.query('update users set password="ddd" where name="zhangsan"', {password:'ppp'}, function(err, result) {    if (err) throw err;    console.log('updated zhangsan\'s password to ddd');    console.log(result);    console.log('\n');});connection.query('select * from users', function(err, rows, fields) {    if (err) throw err;    console.log('selected after updated');    for(var i= 0,usr;usr=rows[i++];){        console.log('user nae='+usr.name + ', password='+usr.password);    }    console.log('\n');});connection.query('delete from  users where name="zhangsan"', {password:'ppp'}, function(err, result) {    if (err) throw err;    console.log('deleted zhangsan');    console.log(result);    console.log('\n');});connection.query('select * from users', function(err, rows, fields) {    if (err) throw err;    console.log('selected after deleted');    for(var i= 0,usr;usr=rows[i++];){        console.log('user nae='+usr.name + ', password='+usr.password);    }    console.log('\n');});connection.end();