Node.js和express - 如何读取cookie但未定义 [英] Node.js and express - how to read a cookie but is undefined

问题描述

  res.cookie（'test'，'yes' {
 expires：new Date（Date.now（）+ 365 * 2 * 24 * 60 * 60 * 1000），
 httpOnly：true 
}）; 
  

我正在使用中间件尝试阅读cookie：

  app.use（express.cookieParser（））; 
 
 var cookie_id = req.cookies.test; 
  

问题是cookie_id未定义，这将是'是'

  Express服务器在开发模式下侦听端口8060 
 TypeError：无法读取未定义的属性test
在/home/ubuntu/workspace/rtbopsConfig/rtbServers/rtbNodejsServer/nodeServer/app.js:48:29 
在回调（/ home / ubuntu / workspace / rtbopsConfig / rtbServers / rtbNodejsServer / nodeServer / node_modules / express / lib /router/index.js:272:11）
在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）
在Router._dispatch（/ home / ubuntu /workspace/rtbopsConfig/rtbServers/rtbNodejsServer/nodeServer/node_modules/express/lib/router/index.js:280:4）
在Object.handle（/ home / ubun tu / workspace / rtbopsConfig / rtbServers / rtbNodejsServer / nodeServer / node_modules / express / lib / router / index.js：45：10）
在下一个（/ home / ubuntu / workspace / rtbopsConfig / rtbServers / rtbNodejsServer / nodeServer / （/ home / ubuntu / workspace / rtbopsConfig / rtbServers / rtbNodejsServer / nodeServer / node_modules / express / ...） node_modules / connect / lib / middleware / methodOverride.js：35：5）
在下一个（/ home / ubuntu / workspace / rtbopsConfig / rtbServers / rtbNodejsServer / nodeServer / node_modules / express / node_modules / connect / lib / http。 js：204：15）
在Object.bodyParser [as handle]（/home/ubuntu/workspace/rtbopsConfig/rtbServers/rtbNodejsServer/nodeServer/node_modules/express/node_modules/connect/lib/middleware/bodyParser.js： 88:61）
  

我做错了什么？

 接受文本/ html，application / xhtml + xml，application / xml; q = 0.9，* /*;q=0.8 
接受编码gzip，deflate 
接受语言en-us，en; q = 0.5 
连接保持活动
 Cookie测试=是
主机127.0.0.1:8060 
用户代理Mozilla / 5.0（X11; Ubuntu的; Linux x86_64; rv：12.0）Gecko / 20100101 Firefox / 12.0 
  

  //配置
 app.configure（function（）{
 app.set（'views'，__dirname +'/ views'）; 
 app.set（'查看引擎'，'jade'）; 
 app.use（express.bodyParser（））; 
 app.use（express.methodOverride（））; 
 app.use（app.router ）; 
 app.use（express.static（__ dirname +'/ public'））; 
 app.use（express.cookieParser（））; 
}）; 
  

解决方案

您需要使用 express .cookieParser（） before app.router ;中间件按顺序运行，这意味着在路由执行之前，它并没有达到 cookieParser（）。

尝试这样：

  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'））; 
  

I use the below to set a cookie using express.

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:

app.use(express.cookieParser());

var cookie_id = req.cookies.test;

Problem is that cookie_id is undefined whne it would be 'yes'

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?

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());
});

解决方案

You need to use express.cookieParser() before app.router; middleware is run in order, meaning it's never even reaching cookieParser() before your route is executed.

Try this:

  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'));

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