express3.x升至express4.x遇到的问题
Most middleware (like favicon) is no longer bundled with Express
Error: Most middleware (like favicon) is no longer bundled with Express and must be installed separately. Please see https://github.com/senchalabs/connect#middleware.
Solution:
For Express 4 :
// Serve favicon.ico.
$> npm install serve-favicon
Then in your server .js script :
var favicon = require(‘serve-favicon’);
app.use(favicon(options.favicon));
For Express 3 :
This is likely the syntax that gave you the error above
app.use(express.favicon(options.favicon));
---------------------------------------------------------------------------------
/Users/user/Desktop/workspace150302/WeDateServer/node_modules/serve-favicon/index.js:45
if (!path) throw new TypeError('path to favicon.ico is required');
^
TypeError: path to favicon.ico is required
改为"static-favicon": "~1.0.0",就可以了
--------------------------------------------------------------------------------------
Error: Most middleware (like session) is no longer bundled with Express and must be installed separately.
最后通过搜索该错误解决方案，发现是因为网上的方法适用于express3.x，express4.0+已经不再内置session，需要另加中间件。
我的package.json版本
{
"name": "WeDateServer",
"version": "0.0.0",
"private": true,
"scripts": {
"start": "node ./bin/www"
},
"dependencies": {
"express": "~4.9.8",
"body-parser": "~1.8.1",
"cookie-parser": "~1.3.3",
"morgan": "~1.3.0",
"serve-favicon": "~2.1.3",
"debug": "~2.0.0",
"jade": "~1.6.0",
"ejs": "~2.3.1",
"mongodb": "~1.4.32",
"connect-mongo":"~0.7.0",
"node-uuid": "~1.4.2",
"formidable": "~1.0.17",
"gridform":"~0.1.7",
"nodemailer":"~1.3.1",
"generic-pool":"~2.1.1",
"amqp":"~0.2.3",
"nodeunit": "~0.9.0",
"request": "~2.53.0",
"express-session":"1.10.3",
"cookies":"0.5.0",
"static-favicon":"2.0.0"
}
}
app.js通过测试的代码：
var express = require('express');
var path = require('path');
var favicon = require('static-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var session = require('express-session');
var http = require('http');
var settings = require('./settings');
var MongoStore = require('connect-mongo')(session);
var fs = require('fs');
var accessLogfile = fs.createWriteStream('access.log',{flags:'a'});
var errorLogfile = fs.createWriteStream('error.log', {flags:'a'});
var amqp = require('amqp');
var domainMiddleware = require('./lib/domain.js');
var routes = require('./routes/index');
var server = http.createServer();
var app = express();
app.use(favicon());
app.use(domainMiddleware({
server:server,
killTimeout: 30000
}));
// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('env','production');
app.set('view engine', 'ejs');
// uncomment after placing your favicon in /public
//app.use(favicon(__dirname + '/public/favicon.ico'));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(session({
secret: settings.cookieSecret,
//store: new MongoStore(settings.replicaSet), //settings.singleServer for localhost
store : new MongoStore({
db : settings.db,
host : '127.0.0.1',
port : '27017'
}),
cookie: {
expires: new Date(Date.now() + 60 * 1000),
maxAge: 60*1000
}
}));
app.use(express.static(path.join(__dirname, 'public')));
app.use('/', routes);
// catch 404 and forward to error handler
app.use(function(req, res, next) {
var err = new Error('Not Found');
err.status = 404;
next(err);
});
/*
connect to rabbitMQ, create a exchange( routKey: A--APNS E--Email) to push message to APNS queue or Emai queue
*/
app.rabbitMQConnection = amqp.createConnection({host:settings.rabbitMQHost,
port:settings.rabbitMQPort,
login:settings.rabbitMQUser,
password:settings.rabbitMQPassword});
app.rabbitMQConnection.on('ready',function(){
console.log('connect to the rabbitMQ successful');
app.rabbitMQConnection.exchange('router',{type: 'direct',autoDelete: false,confirm: true},function(exchange){
app.e = exchange;
});
});
// error handlers
// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
// app.use(express.errorHandler());
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: err
});
});
}
//production only
if ('production' == app.get('env')) {
app.use(logger({stream:accessLogfile}));
app.use(function(err, req, res, next){
var meta = '['+ new Date() +']' + req.url + '\n';
errorLogfile.write(meta + err.stack + '\n');
next();
});
}
// production error handler
// no stacktraces leaked to user
app.use(function(err, req, res, next) {
res.status(err.status || 500);
res.render('error', {
message: err.message,
error: {}
});
});
exports.server= server;
module.exports = app;
express 4.x 分离了middleware，除了static，其他需要自行安装