1.引入数据库
let mysql = require(“mysql”)
2.创建链接池
let pool = mysql.createPool({
host:‘127.0.0.1’,
user:‘root’,
password:‘12345678’,
database:‘newshop’,
port:3306
})
3.
let query = function(sql,data){
return new Promise(function(resolve,reject){
pool.getConnection(function(err,connection){
if(!err){
connection.query(sql,data,function(error,result){
if(!error){
resolve(result)
}else{
reject(error)
}
connection.release()
})
}else{
reject(err)
}
})
})
}
