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', {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', {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：
https://www.npmjs.com/package/mysql
https://github.com/felixge/node-mysql
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', {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', {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();
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