初步使用Node连接Mysql数据库

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var mysql   = require(‘mysql‘);

var connection = mysql.createConnection({

 host   : ‘localhost‘,

 user   : ‘me‘,

 password : ‘secret‘,

 database : ‘my_db‘

});

connection.connect();

connection.query(‘SELECT 1 + 1 AS solution‘, function(err, rows, fields) {

 if (err) throw err;

 console.log(‘The solution is: ‘, rows[0].solution);

});

connection.end();

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var mysql   = require(‘mysql‘);

var connection = mysql.createConnection({

 host   : ‘localhost‘,

 user   : ‘me‘,

 password : ‘secret‘,

 database : ‘my_db‘

});

connection.connect();

// 增加记录

client.query(‘insert into test (username ,password) values ("lupeng" , "123456")‘);

// 删除记录

client.query(‘delete from test where username = "lupeng"‘);

// 修改记录

client.query(‘update test set username = "pengloo53" where username = "lupeng"‘);

// 查询记录

client.query("select * from test" , function selectTable(err, rows, fields){

 if (err){

  throw err;

 }

 if (rows){

  for(var i = 0 ; i < rows.length ; i++){

   console.log("%d\t%s\t%s", rows[i].id,rows[i].username,rows[i].password);

  }

 }

});

connection.end();