wechatpay/src/session/mysql.js

const mysql=require("mysql");  

class data {
    server (sql, sqlcon, callback) {
        let pool  = mysql.createPool(sqlcon);
        pool.query(sql, function (error, results, fields) {
            if (error) throw error;
            callback(error,results,fields);
        });
    }
}
  
module.exports = data;