为什么我的服务器在尝试设置 cookie 时返回错误 500？

Question

我有一个 express v4 服务器，其路由名为 admin。当用户向管理员路由发布密码时，我想通过在用户的浏览器上设置一个 cookie 并发送一个小 json 来响应。由于某种原因，服务器在尝试响应时不断返回错误 500。我假设这与 cookie 有关，因为我可以毫无问题地执行“res.send()”。我是 express/nodejs 的新手，因此不胜感激。

admin.js

var express = require('express');
var router = express.Router();
var cookieParser = require('cookie-parser');


/* POST HANDLER */
router.post('/', function(req, res) {

    var on = {'admin' : "on"};
    res.cookie(cookie , 'cookie_on').send(on);


});

module.exports = router;

app.js

var express = require('express');
var path = require('path');
var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');

var routes = require('./routes/index');
var admin = require('./routes/admin');
var blogposts = require('./routes/blogposts');

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'jade');

// uncomment after placing your favicon in /public
//app.use(favicon(path.join(__dirname, 'public', 'favicon.ico')));
app.use(logger('dev'));
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));

app.use('/', routes);
app.use('/admin', admin);
app.use('/blogposts', blogposts);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  var err = new Error('Not Found');
  err.status = 404;
  next(err);
});

// error handlers

// development error handler
// will print stacktrace
if (app.get('env') === 'development') {
  app.use(function(err, req, res, next) {
    res.status(err.status || 500);
    res.render('error', {
      message: err.message,
      error: err
    });
  });
}

// 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: {}
  });
});

module.exports = app;

Answer 1

愚蠢的错误：Cookie 应该是 'cookie'...