Node.js 和 express - 如何读取 cookie 但未定义
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Node.js and express - how to read a cookie but is undefined
提问by Tampa
I use the below to set a cookie using express.
我使用下面的内容来使用 express 设置 cookie。
res.cookie('test', 'yes', {
expires: new Date(Date.now() + 365*2*24*60*60*1000),
httpOnly: true
});
I am using the middleware to try and read the cookie:
我正在使用中间件来尝试读取 cookie：
app.use(express.cookieParser());
var cookie_id = req.cookies.test;
Problem is that cookie_id is undefined whne it would be 'yes'
问题是 cookie_id 是未定义的，因为它是“是”
Express server listening on port 8060 in development mode
TypeError: Cannot read property 'test' of undefined
at /home/ubuntu/workspace/rtbopsConfig/rtbServers/rtbNodejsServer/nodeServer/app.js:48:29
at callbacks (/home/ubuntu/workspace/rtbopsConfig/rtbServers/rtbNodejsServer/nodeServer/node_modules/express/lib/router/index.js:272:11)
at param (/home/ubuntu/workspace/rtbopsConfig/rtbServers/rtbNodejsServer/nodeServer/node_modules/express/lib/router/index.js:246:11)
at pass (/home/ubuntu/workspace/rtbopsConfig/rtbServers/rtbNodejsServer/nodeServer/node_modules/express/lib/router/index.js:253:5)
at Router._dispatch (/home/ubuntu/workspace/rtbopsConfig/rtbServers/rtbNodejsServer/nodeServer/node_modules/express/lib/router/index.js:280:4)
at Object.handle (/home/ubuntu/workspace/rtbopsConfig/rtbServers/rtbNodejsServer/nodeServer/node_modules/express/lib/router/index.js:45:10)
at next (/home/ubuntu/workspace/rtbopsConfig/rtbServers/rtbNodejsServer/nodeServer/node_modules/express/node_modules/connect/lib/http.js:204:15)
at Object.methodOverride [as handle] (/home/ubuntu/workspace/rtbopsConfig/rtbServers/rtbNodejsServer/nodeServer/node_modules/express/node_modules/connect/lib/middleware/methodOverride.js:35:5)
at next (/home/ubuntu/workspace/rtbopsConfig/rtbServers/rtbNodejsServer/nodeServer/node_modules/express/node_modules/connect/lib/http.js:204:15)
at Object.bodyParser [as handle] (/home/ubuntu/workspace/rtbopsConfig/rtbServers/rtbNodejsServer/nodeServer/node_modules/express/node_modules/connect/lib/middleware/bodyParser.js:88:61)
What did I do wrong?
我做错了什么？
Accept text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Encoding gzip, deflate
Accept-Language en-us,en;q=0.5
Connection keep-alive
Cookie test=yes
Host 127.0.0.1:8060
User-Agent Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:12.0) Gecko/20100101 Firefox/12.0
// Configuration
app.configure(function() {
app.set('views', __dirname + '/views');
app.set('view engine', 'jade');
app.use(express.bodyParser());
app.use(express.methodOverride());
app.use(app.router);
app.use(express.static(__dirname + '/public'));
app.use(express.cookieParser());
});
回答by Ashe
You need to use express.cookieParser()beforeapp.router; middleware is run in order, meaning it's never even reaching cookieParser()before your route is executed.
您需要使用express.cookieParser()之前app.router; 中间件按顺序运行，这意味着它cookieParser()在您的路线执行之前甚至永远不会到达。
Try this:
尝试这个：
app.set('views', __dirname + '/views');
app.set('view engine', 'jade');
app.use(express.bodyParser());
app.use(express.methodOverride());
app.use(express.cookieParser());
app.use(app.router);
app.use(express.static(__dirname + '/public'));
回答by sqren
Most middleware (like cookieParser) is no longer bundled with Express and must be installed separately.
大多数中间件（如 cookieParser）不再与 Express 捆绑在一起，必须单独安装。
Install cookie-parser:
安装 cookie 解析器：
npm install cookie-parser
Usage
用法
var express = require('express')
var cookieParser = require('cookie-parser')
var app = express()
app.use(cookieParser())
回答by Nader Dabit
I solved it by adding app.use(express.cookieParser());above the app.router.
我通过app.use(express.cookieParser());在app.router.
