我以前做过这个......这次我没有追随我做错了什么，但我已经挣扎了几个小时，现在认为自己精神受阻。对应代码：
app.use(express.bodyParser());
app.use(i18next.handle);
app.use(express.methodOverride());
app.use(express.static(__dirname + '/public'));
app.set('views', __dirname + '/views');
app.set('view engine', 'swig');
app.set('view cache', false);
var session_store = new RedisStore({ client : redis_client});
app.use(express.errorHandler({ dumpExceptions : true, showStack : true}));
app.use(express.cookieParser());
app.use(express.session({ store : session_store, secret : SESSION_SECRET, key : "sid" }));
app.use(app.router);
那么在处理请求时，这里只是一个例子：
app.get('/session_test', function (req, res, next) {
console.log(req.session); //undefined
});
与 redis 的连接工作正常。没有显示错误。然后，当尝试从请求中访问它时， req.session 是未定义的。浏览器正在发送正确的 sid。
我不是请求期间发生的确切流程的专家，但是在调试之后，似乎在会话中间件之前调用了路由器。
提前感谢您提供的任何和所有可能的帮助。我会提供我能提供的任何代码，我不确定你有什么帮助。
这里有更多代码。服务器.js
//Dependency modules
var express = require('express'),
app = express.createServer(),
//Application dependency modules
settings = require('./settings'), //app settings
routes = require('./routes'), //http routes
rtroutes = require('./rtroutes'); //real time communication routes (io)
var io = require('socket.io').listen(app);
var appWithSettings = settings.setup(io, app);
routes.settings.setup(appWithSettings);
rtroutes.settings.setup(io, appWithSettings);
在调用 routes.settings.setup 之前不会添加任何路由。设置（这是全局设置）是一个相当大的文件。这就是所有配置完成的地方。在调用 settings.setup 方法之前不会添加设置。这是文件的一部分：
//Dependency modules
var express = require('express'),
redis = require('redis'),
//Important configuration values
var SESSION_SECRET = 'some secret thing which doesnt belong to stackoverflow!',
insert_other_variables_here = "lalala";
//Computed general objects
var RedisStore = require('connect-redis')(express),
redis_client = redis.createClient(REDIS_PORT, REDIS_HOST);
exports.setup = function (io, app) {
app.configure(function () {
app.use(express.bodyParser());
app.use(i18next.handle);
app.use(express.methodOverride());
app.use(express.static(__dirname + '/public'));
app.set('views', __dirname + '/views');
app.set('view engine', 'swig');
app.set('view cache', false);
var session_store = new RedisStore({ client : redis_client});
app.use(express.errorHandler({ dumpExceptions : true, showStack : true}));
app.use(express.cookieParser());
console.log("ABOUT TO ADD SESSION STORE MIDDLEWARE");
app.use(express.session({ store : session_store, secret : SESSION_SECRET, key : "sid" }));
console.log("AND NOW ADDED THE SESSION STORE MIDDLEWARE");
app.use(app.router);
});
app.configure('development', function () {
//some things in here, but nothing that affects app. I have commented this
//for debugging and it changed nothing
});
app.configure('production', function () {
//mostly configuration for io and some caching layers, as well as servers info
app.use(express.errorHandler());
app.use(express.logger({ stream : logFile }));
});
app.listen(WEB_PORT);
return {
app : app,
//some other stuff that isn't relevant
}
}
我有 25 条路线分成 4 个不同的文件（不知何故，直到现在我才需要会话，因为我延迟了一些部分，而所需的一切都是用 Mongoose 完成的）。这是一个如何完成的示例（使用假名）：
路线/index.js
export.settings = require("./settings");
路线/settings.js
exports.setup = function (app_settings) {
require("./route1")(app_settings);
require("./route2")(app_settings);
require("./route3")(app_settings);
};
这是一个剥离的“route1”文件（“routes/route1.js”）：
module.exports = function (app_settings) {
var app = app_settings.app;
console.log("ABOUT TO ADD ROUTES")
app.get("/signin", function (req, res, next) {
console.log(req.session); //this will be undefined
});
app.get("/register", function (req, res, next) {
});
app.get('/language', function (req, res, next) {
});
app.post('/settings', function (req, res, next) {
});
console.log("ADDED ROUTES NOW!")
}