标签：from 用户 div base local word 安装 highlight pre
一 wamp创建数据库
选择phpMyAdmin
选择用户，添加用户
填写数据库详细资料，填写完毕选择右下角的“执行”
用户添加成功
2. nodejs 安装mysql驱动
npm install mysql
3 数据库操作CURD
连接数据库
index.js：
var mysql = require(‘mysql‘);
var connection = mysql.createConnection({
host : ‘localhost‘,
user : ‘test‘,
password : ‘123456‘,
database : ‘test‘
});
connection.connect();
connection.query(‘SELECT 1 + 1 AS solution‘, function (error, results, fields) {
if (error) throw error;
console.log(‘The solution is: ‘, results[0].solution);
});
运行后，输出结果：
查询
新建表account用于测试：
index.js：
var mysql = require(‘mysql‘);
var connection = mysql.createConnection({
host : ‘localhost‘,
user : ‘test‘,
password : ‘123456‘,
database : ‘test‘
});
connection.connect();
var sql = ‘SELECT * FROM account‘;
connection.query(sql,function (err, result) {
if(err){
console.log(‘[SELECT ERROR] - ‘,err.message);
return;
}
console.log(‘--------------------------SELECT----------------------------‘);
console.log(result);
console.log(result[0].id, result[0].name, result[0].age);
console.log(‘------------------------------------------------------------\n\n‘);
});
connection.end();
输出结果：
插入数据
index.js：
var mysql = require(‘mysql‘);
var connection = mysql.createConnection({
host : ‘localhost‘,
user : ‘test‘,
password : ‘123456‘,
database : ‘test‘
});
connection.connect();
var addSql = ‘INSERT INTO account(id,name,age) VALUES(3,?,?)‘; //插入数据
var addSqlParams = [‘baby‘,23]; //填写问号的数据
//增
connection.query(addSql,addSqlParams,function (err, result) {
if(err){
console.log(‘[INSERT ERROR] - ‘,err.message);
return;
}
console.log(‘--------------------------INSERT----------------------------‘);
//console.log(‘INSERT ID:‘,result.insertId);
console.log(‘INSERT ID:‘,result); //插入结果
console.log(‘-----------------------------------------------------------------\n\n‘);
});
connection.end();
运行结果，数据库增加了一条数据：
更新数据
var mysql = require(‘mysql‘);
var connection = mysql.createConnection({
host : ‘localhost‘,
user : ‘test‘,
password : ‘123456‘,
database : ‘test‘
});
connection.connect();
var modSql = ‘UPDATE account SET name = ?,age = ? WHERE id = ?‘;
var modSqlParams = [‘Lee‘, 31, 1];
//改
connection.query(modSql,modSqlParams,function (err, result) {
if(err){
console.log(‘[UPDATE ERROR] - ‘,err.message);
return;
}
console.log(‘--------------------------UPDATE----------------------------‘);
console.log(‘UPDATE affectedRows‘,result.affectedRows);
console.log(‘-----------------------------------------------------------------\n\n‘);
});
connection.end();
运行结果：
删除数据
var mysql = require(‘mysql‘);
var connection = mysql.createConnection({
host : ‘localhost‘,
user : ‘test‘,
password : ‘123456‘,
database : ‘test‘
});
connection.connect();
var delSql = ‘DELETE FROM account where id=3‘;
//删
connection.query(delSql,function (err, result) {
if(err){
console.log(‘[DELETE ERROR] - ‘,err.message);
return;
}
console.log(‘--------------------------DELETE----------------------------‘);
console.log(‘DELETE affectedRows‘,result.affectedRows);
console.log(‘-----------------------------------------------------------------\n\n‘);
});
connection.end();
运行结果，id=3的数据被删除：
标签：from 用户 div base local word 安装 highlight pre
原文地址：http://www.cnblogs.com/gamedaybyday/p/7054533.html
