NodeJS + Express - 将会话中间件应用于某些路由 [英] NodeJS + Express - Apply session middleware to some routes
问题描述
我读到无处不在的中间件定义(app.use(express.session({...)仅适用于之后的路由,所以我创建了这个示例:
var express = require('express');
var app = express();
app.use(express.bodyParser()) ;
app.get('/ path1',function(req,res){
res.send('text response');
});
app.use(express.cookieParser());
app.use(express.session({
secret:'secret',
cookie:{maxAge :new Date(Date.now()+ 2 * 60 * 1000)}
}));
app.get('/ path2',function(req, res){
res.session.test = {test:test};
res.send('text response');
});
app.listen(8088);
但这不起作用:in / path2 res。会话未定义。
如果我移动会话中间件定义 - 一切正常,但是我看到在调用/ path1(th)时正在创建会话是我想避免的)
有人可以解释一个单个应用程序只能使用某些路由。
谢谢!
/////更新//////
经过更多的挖掘 - 我想出了:
不要使用:应用程序。使用(express.session({...}));
相反 - 定义以下内容:
var sessionMiddleware = express.session({
//会话配置
});
函数sessionHandler(req,res,next){sessionMiddleware(req,res,next); }
然后在需要会话支持的特定路由上应用处理程序:
app.get('/ path_that_need_session',sessionHandler,function(req,res){
/ *使用req.session * /
});
不要使用 .use(express.session({...}))
。
相反,初始化会话中间件,保存对结果的引用函数然后直接包含在您想要的路径上。
var express = require('express'),
app = express();
var session = express.session({
//会话配置
});
app.use(app.router);
//必须来自app.use(app.router);
app.get('/ your / route / here',session,function(req,res){
//路由处理程序的代码在这里
});
比更新中包含的答案稍微简单一些(你不需要包装器功能) / p>
I have an Express application with some routes, only two of them need to support sessions. I read everywhere that the middleware definition (app.use(express.session({...) applies only to the routes that comes after it, so I created this sample:
var express = require('express');
var app = express();
app.use(express.bodyParser());
app.get('/path1', function (req, res) {
res.send('text response');
});
app.use(express.cookieParser());
app.use(express.session({
secret: 'secret',
cookie: { maxAge: new Date(Date.now() + 2 * 60 * 1000) }
}));
app.get('/path2', function (req, res) {
res.session.test = { "test": "test" };
res.send('text response');
});
app.listen(8088);
But this doesn't work: in /path2 res.session is undefined.
If I move the session middleware definition up - everything works, but I see that sessions are being create when calling /path1 (this is what I want to avoid)
Can someone explain how a single application can use session in only some of the routes.
Thanks!
///// UPDATE //////
After more digging - I figured it out:
Don't use: app.use(express.session({ ... }));
Instead - define the following:
var sessionMiddleware = express.session({
//session configurations
});
function sessionHandler(req, res, next) { sessionMiddleware(req, res, next); }
Then apply the handler on the specific route/s that need session support:
app.get('/path_that_need_session', sessionHandler, function (req, res) {
/* Do somthing with req.session */
});
Don't use app.use(express.session({ ... }))
.
Instead, initialize the session middleware, save a reference to the resulting function then include it directly in the routes you want it on.
var express = require('express'),
app = express();
var session = express.session({
//session configuration
});
app.use(app.router);
// must come after app.use(app.router);
app.get('/your/route/here', session, function(req, res){
// code for route handler goes here
});
Slightly simpler than the answer included in the update (you don't need the wrapper function).
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