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Node.js操作mysql数据库增删改查
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关于node.js操作mysql数据库的相关介绍请阅读全文吧。下文介绍的非常详细，具体内容如下所示：

 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

Node.js操作mysql数据库增删改查

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 "htmlcode">



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：




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 "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();
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