我使用Express CLI创建的应用程序有问题。请务必注意,我正在使用mssql
来连接数据库。
当我使用npm start
时,该应用程序启动没有问题,但是当我运行node ./bin/www
时,该应用程序启动了,但是无法连接到数据库。我收到错误"Invalid server: undefined"
。
当我检查package.json
文件时,我有:
"scripts": {
"start": "node ./bin/www",
"debug": "set DEBUG=myapp:* & npm start",
"nodemon": "npx nodemon"
},
据我所知,运行npm start
与node ./bin/www
应该完全相同,但是由于某种原因,它不是。
关于这是一个问题的原因,我想使应用程序使用pm2
来运行,因此,我需要能够从文件而不是从命令中运行该应用程序。
这是我的www
文件:
#!/usr/bin/env node
/**
* Module dependencies.
*/
var app = require('../app');
var debug = require('debug')('mtloops-web-api:server');
var http = require('http');
/**
* Get port from environment and store in Express.
*/
var port = normalizePort('3543');
app.set('port', port);
/**
* Create HTTP server.
*/
var server = http.createServer(app);
/**
* Listen on provided port, on all network interfaces.
*/
server.listen(port);
server.on('error', onError);
server.on('listening', onListening);
/**
* Normalize a port into a number, string, or false.
*/
function normalizePort(val) {
var port = parseInt(val, 10);
if (isNaN(port)) {
// named pipe
return val;
}
if (port >= 0) {
// port number
return port;
}
return false;
}
/**
* Event listener for HTTP server "error" event.
*/
function onError(error) {
if (error.syscall !== 'listen') {
throw error;
}
var bind = typeof port === 'string'
? 'Pipe ' + port
: 'Port ' + port;
// handle specific listen errors with friendly messages
switch (error.code) {
case 'EACCES':
console.error(bind + ' requires elevated privileges');
process.exit(1);
break;
case 'EADDRINUSE':
console.error(bind + ' is already in use');
process.exit(1);
break;
default:
throw error;
}
}
/**
* Event listener for HTTP server "listening" event.
*/
function onListening() {
var addr = server.address();
var bind = typeof addr === 'string'
? 'pipe ' + addr
: 'port ' + addr.port;
debug('Listening on ' + bind);
}
这是我的数据库连接文件:
const sql = require('mssql')
// const path = require('path')
require('dotenv').config()
var config = {
user: process.env.DBUSERNAME,
password: process.env.DBPASSWORD,
server: process.env.HOST,
database: process.env.DATABASE,
connectionTimeout: 300000,
requestTimeout: 300000,
pool: {
idleTimeoutMillis: 300000,
max: 100
},
options: {
encrypt: false
}
}
async function sp (procedure, params) {
const toReturn = await new sql.ConnectionPool(config).connect().then(pool => {
const request = pool.request()
Object.keys(params).forEach(key => {
if (isNaN(params[key])) {
request.input(key, sql.VarChar(8), params[key])
} else {
var numeric = parseInt(params[key])
request.input(key, sql.Int, numeric <= 0 ? -1 : numeric)
}
})
return request.execute(procedure)
}).catch(error => {
throw error.message
})
return toReturn
}
module.exports = {
sp
}