Node.js操作mysql資料庫增刪改查_node.js

關於node.js操作mysql資料庫的相關介紹請閱讀全文吧。下文介紹的非常詳細，具體內容如下：

 安裝mysql模組

npm install mysql 

資料庫準備

mysql server所在的機器IP位址是192.168.0.108，登入帳號就用root@123456

在mysql建立test資料庫

在test資料庫中建立一張users表

操作

連接資料庫

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

插入一個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，帶條件

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');
}); 

刪除一個user，帶條件

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');
});

查詢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');
}); 

關閉資料庫連線

connection.end();

基本的CRUD完成

mysql模組的完整功能說明請參閱官方：

https://www.npmjs.com/package/mysql

https://github.com/felixge/node-mysql

全部demo程式碼

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();