Node.js是一套用来编写高性能网络服务器的JavaScript工具包
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$ npm install mysql
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//数据库名 NodeSample
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CREATE TABLE `NodeSample`.`MyTable` (
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`id` INT UNSIGNED NOT NULL AUTO_INCREMENT PRIMARY KEY ,
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`firstname` VARCHAR( 20 ) NOT NULL ,
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`lastname` VARCHAR( 20 ) NOT NULL ,
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`message` TEXT NOT NULL
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) ENGINE = MYISAM ;
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var sys = require('sys');
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var Client = require('mysql').Client;
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var client = new Client();
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client.user = 'someuser';
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client.password = 'password';
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client.connect(function(error, results) {
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if(error) {
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console.log('Connection Error: ' + error.message);
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return;
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}
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console.log('Connected to MySQL');
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});
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ClientConnectionReady = function(client)
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{
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client.query('USE NodeSample', function(error, results) {
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if(error) {
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console.log('ClientConnectionReady Error: ' + error.message);
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client.end();
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return;
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}
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});
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};
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var sys = require('sys');
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var Client = require('mysql').Client;
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var client = new Client();
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client.user = 'someuser';
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client.password = 'password';
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console.log('Connecting to MySQL...');
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client.connect(function(error, results) {
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if(error) {
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console.log('Connection Error: ' + error.message);
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return;
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}
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console.log('Connected to MySQL');
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ClientConnectionReady(client);
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});
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ClientConnectionReady = function(client)
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{
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client.query('USE NodeSample', function(error, results) {
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if(error) {
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console.log('ClientConnectionReady Error: ' + error.message);
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client.end();
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return;
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}
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ClientReady(client);
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});
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};
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ClientReady = function(client)
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{
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var values = ['Chad', 'Lung', 'Hello World'];
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client.query('INSERT INTO MyTable SET firstname = ?, lastname = ? , message = ?', values,
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function(error, results) {
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if(error) {
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console.log("ClientReady Error: " + error.message);
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client.end();
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return;
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}
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console.log('Inserted: ' + results.affectedRows + ' row.');
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console.log('Id inserted: ' + results.insertId);
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}
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);
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GetData(client);
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}
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GetData = function(client)
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{
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client.query(
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'SELECT * FROM MyTable',
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function selectCb(error, results, fields) {
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if (error) {
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console.log('GetData Error: ' + error.message);
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client.end();
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return;
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}
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// Uncomment these if you want lots of feedback
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//console.log('Results:');
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//console.log(results);
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//console.log('Field metadata:');
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//console.log(fields);
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//console.log(sys.inspect(results));
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if(results.length > 0)
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{
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var firstResult = results[0];
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console.log('First Name: ' + firstResult['firstname']);
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console.log('Last Name: ' + firstResult['lastname']);
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console.log('Message: ' + firstResult['message']);
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}
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});
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client.end();
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console.log('Connection closed');
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};
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Node.js 连接 MySQL 并进行数据库操作
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