nodejs怎么连接数据库mysql

Question

如题所述

Answer 1

var mysql = require('mysql');
var conn = mysql.createConnection({
host: 'localhost',
user: 'root',
password: '',
database:'nodejs',
port: 3306
});
conn.connect();

//查询
// conn.query('SELECT * from user where name="wangzhiwei"', function(err, result) {
// if (err) throw err;
// console.log(result);
// })

//新增
// conn.query('insert into user (username,password) values("huxiaona","123456")', function(err, result) {
// if (err) throw err;
// console.log(result);
// })

//删除
// conn.query('delete from user where username="wupeigui"', function(err, result) {
// if (err) throw err;
// console.log(result);
// })

conn.query('update user set id="1" where username="huxiaona"',function(err,result){
if (err) {throw err};
console.log("修改数据成功");
})

conn.end();

Answer 2

npm install [email protected] --save
npm install mysql

var knex = require('knex')({
client: 'mysql',
connection: {
host : '<a href="https://www.baidu.com/s?wd=127.0.0.1&tn=44039180_cpr&fenlei=mv6quAkxTZn0IZRqIHckPjm4nH00T1YkPjF-Pj9hmHcvPjbduANB0ZwV5Hcvrjm3rH6sPfKWUMw85HfYnjn4nH6sgvPsT6KdThsqpZwYTjCEQLGCpyw9Uz4Bmy-bIi4WUvYETgN-TLwGUv3EPjbvrH0vrHmknWmznj0Yrj0Y" target="_blank" class="baidu-highlight">127.0.0.1</a>',
user : 'your_database_user',
password : 'your_database_password',
database : 'myapp_test'
}
});

knex.select('title', 'author', 'year').from('books').then(function(data){
//取到的数据
console.log(data)
})

更多：
http://knexjs.org/