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Node.js是一套用來編寫高性能網絡服務器的JavaScript工具包
 
通常在NodeJS開發中我們經常涉及到操作數據庫，尤其是 MySQL ，作為應用最為廣泛的開源數據庫則成為我們的首選，本篇就來介紹下如何通過NodeJS來操作 MySQL 數據庫。 安裝MySQL模塊到NodeJS中 我們需要讓NodeJS支持MySQL，則需要將MySQL模塊添加到系統支持庫
 
想要快速了解Node.js ，贊生推薦親看看 node.js_guide.pdf  — node.js 開發指南 ：想要電子版高清的 留言發送
 
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Node.js
簡單介紹一下node.js的操作吧
安裝 node-mysql
C代碼  

$ npm install mysql 

 
創建測試表
//數據庫名 NodeSample
C代碼  

CREATE TABLE `NodeSample`.`MyTable` ( 
`id` INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY , 
`firstname` VARCHAR( 20 ) NOT NULL , 
`lastname` VARCHAR( 20 ) NOT NULL , 
`message` TEXT NOT NULL 
) ENGINE = MYISAM ; 

 
連接數據庫
Js代碼  

var sys = require('sys'); 
 
var Client = require('mysql').Client; 
var client = new Client(); 
 
client.user = 'someuser'; 
client.password = 'password'; 
 
client.connect(function(error, results) { 
if(error) { 
console.log('Connection Error: ' + error.message); 
return; 
} 
console.log('Connected to MySQL'); 
}); 

 
打開數據庫
Js代碼  

ClientConnectionReady = function(client) 
{ 
client.query('USE NodeSample', function(error, results) { 
if(error) { 
console.log('ClientConnectionReady Error: ' + error.message); 
client.end(); 
return; 
} 
}); 
}; 

 
完成數據庫操作程序
Js代碼 

var sys = require('sys'); 
 
var Client = require('mysql').Client; 
var client = new Client(); 
 
client.user = 'someuser'; 
client.password = 'password'; 
 
console.log('Connecting to MySQL...'); 
 
client.connect(function(error, results) { 
if(error) { 
console.log('Connection Error: ' + error.message); 
return; 
} 
console.log('Connected to MySQL'); 
ClientConnectionReady(client); 
}); 
 
ClientConnectionReady = function(client) 
{ 
client.query('USE NodeSample', function(error, results) { 
if(error) { 
console.log('ClientConnectionReady Error: ' + error.message); 
client.end(); 
return; 
} 
ClientReady(client); 
}); 
}; 
 
ClientReady = function(client) 
{ 
var values = ['Chad', 'Lung', 'Hello World']; 
client.query('INSERT INTO MyTable SET firstname = ?, lastname = ? , message = ?', values, 
function(error, results) { 
if(error) { 
console.log("ClientReady Error: " + error.message); 
client.end(); 
return; 
} 
console.log('Inserted: ' + results.affectedRows + ' row.'); 
console.log('Id inserted: ' + results.insertId); 
} 
); 
GetData(client); 
} 
 
GetData = function(client) 
{ 
client.query( 
'SELECT * FROM MyTable', 
function selectCb(error, results, fields) { 
if (error) { 
console.log('GetData Error: ' + error.message); 
client.end(); 
return; 
} 
// Uncomment these if you want lots of feedback 
//console.log('Results:'); 
//console.log(results); 
//console.log('Field metadata:'); 
//console.log(fields); 
//console.log(sys.inspect(results)); 
 
if(results.length > 0) 
{ 
var firstResult = results[0]; 
console.log('First Name: ' + firstResult['firstname']); 
console.log('Last Name: ' + firstResult['lastname']); 
console.log('Message: ' + firstResult['message']); 
} 
}); 
 
client.end(); 
console.log('Connection closed'); 
};