我在我的nodejs网站有一个奇怪的问题。我有一个执行SQL命令的函数。它完美的工作,但运行几天后的服务器。它开始返回一个空阵列!当我重新启动服务器时,它会重新开始工作,但几天后仍会崩溃。MySql命令是从终端工作,但不工作从节点js
这是错误(空数组错误):
TypeError: Cannot read property '0' of undefined
at Query._callback (/home/mikro/www/my_modules/database.js:47:27)
at Query.Sequence.end (/home/mikro/www/node_modules/mysql/lib/protocol/sequences/Sequence.js:86:24)
at /home/mikro/www/node_modules/mysql/lib/protocol/Protocol.js:226:14
at _combinedTickCallback (internal/process/next_tick.js:73:7)
at process._tickDomainCallback (internal/process/next_tick.js:128:9)
,这是功能:
login: function (username, password, callback) {
db.query('SELECT id, password, expdate FROM users WHERE username=' +
mysql.escape(username) + ';', function (err, rows) {
var row = rows[0];
if (err) console.error(err)
if (!row)
callback(ERR_USER_NOT_FOUND, null);
else
bcrypt.compare(password, row.password, function (err, result) {
if (result){
var expdate = row.expdate;
var currDate = moment(new Date()).format('YYYY-MM-DD HH:mm:ss');
if (moment(currDate).isAfter(expdate) && row.id !== 1)
callback ('Please pay your monthly fee to be able to login', null);
else
callback(null, row)
}
else {
callback(ERR_WRONG_PASSWORD, null);
}
})
});
}
我有nginx的代理服务器的Ubuntu和运行PM2。 我的依赖关系:
"dependencies": {
"bcrypt-nodejs": "latest",
"body-parser": "~1.16.0",
"connect-flash": "^0.1.1",
"cookie-parser": "~1.4.3",
"debug": "~2.6.0",
"ejs": "~2.5.5",
"express": "~4.14.1",
"express-session": "^1.15.1",
"moment": "^2.18.1",
"morgan": "~1.7.0",
"mysql": "latest",
"serve-favicon": "~2.3.2",
"socket.io": "latest",
"jwt-simple": "latest",
"jsonfile": "latest",
"express-mysql-session": "latest",
"express-rate-limit": "latest"
}
UPDATE1
这是连接代码:
var mysql = require('mysql');
var db = mysql.createConnection(require('./config'));
db.connect();
用户名是否意味着字符串?如果是这样,它应该用引号括起来。如果这不是问题,您是否介意发布可以成功运行的查询? – RToyo
显示你的mysql连接代码。 –
@RobbieToyota是的,它是一个字符串,这不是问题,因为它重新启动服务器之前工作和再次工作。但是问题出现很多时间,每次我重置服务器时都会解决问题。但是,我不能每次出现问题时重置服务器! –