// mysqldb-util.js var mysql = require(‘mysql’);

var pool = mysql.createPool({ host: ‘127.0.0.1’, user: ‘root’, password: ‘root’, port: ‘3306’, database: ‘nodesample’ });

exports.dataCenter = function(sql, fn) { // (callback && typeof(callback) === “function”) pool.getConnection(function (err, conn) { if (err) { console.log("POOL ==> " + err); return fn(err); } else { conn.query(sql, function (err, res) { conn.release(); return fn(res); }); } }); };

//mysqlDbTest.js var mysql = require(‘mysql’) , dbUtil = require(’./mysql-dbutil’);

var selectSQL = “select * from ?? where ID = ?”; var selectArr = [‘mytable’, ‘12204’]; selectSQL = mysql.format(selectSQL, selectArr);

dbUtil.dataCenter(selectSQL, function(data) { console.log(data); });

请问 运行node mysqlDbTest.js 时，光标输出数据后怎么还停着未结束？是因为连接未释放吗？怎么修改呢？多谢