使用node express.js重定向循环

Question

我有一个简单的网页/about,/contact,/home和/lessons路线定义.所有路线都可以正常工作,除了/lessons.我立即得到一个重定向循环(Error 310 (net::ERR_TOO_MANY_REDIRECTS): There were too many redirects).

这是我的主要server.js代码:

var port = process.env.PORT || 8888;
var app = require('./app').init(port);
var markdown = require('./markdown');
var lessons = require('./lessons.json').lessons;

// app.use(function(req,res,next) {
//     console.log('adding lessons to locals');
//     res.locals.date = new Date().toLocaleDateString();
//     res.locals.lessons = lessons;
//     next();
// });
// app.use(app.router);

app.get('/', function (req, res) {
    console.log('controller is : home');
    res.locals.controller = 'home';
    res.render('home');
});

app.get('/:controller', function (req, res, next) {
  var controller = req.params.controller;
  console.log('controller is : '+ controller);
  if (controller == 'about' || controller == 'contact') {
    res.locals.controller = controller;
    res.render(controller);
  } else {
      console.log('next was taken!');
      next();
  }
});

app.get('/lessons', function(req, res) {
  res.locals.lessons = lessons;
  console.log('controller is : lessons');
  res.render('lessons');
});

app.get('/lessons/:lesson', function(req, res) {
    console.log('controller is : lesson');
    res.locals.controller = 'lessons';
    res.send('gimmie the lesson');
});

/* The 404 Route (ALWAYS Keep this as the last route) */
app.get('/*', function (req, res) {
    console.log('got 404 request to ' + req.url);
    res.render('404');
});

app.js这是用于服务器初始化的文件:

var express = require('express');
var slashes = require('connect-slashes');


exports.init = function (port) {
  var app = express();
  app.use(express.static(__dirname + '/public'));
  // add middleware to remove trailing slash in urls
  app.use(slashes(false));
  app.set('views', __dirname + '/views')
  app.set('view engine', 'ejs');
  app.use(express.bodyParser());
  app.use(express.methodOverride());
  app.use(express.logger());
  app.enable("jsonp callback");
  if ('development' == app.get('env')) {
    app.use(express.errorHandler({
      dumpExceptions: true,
      showStack: true
    }));
    app.use(express.logger({
      format: ':method :url'
    }));
  }

  if ('production' == app.get('env')) {
    app.use(express.errorHandler());
  }

  app.use(function (err, req, res, next) {
    console.log('Oops, something went wrong');
    res.render('500.ejs', {
      locals: {
        error: err
      },
      status: 500
    });
  });

  app.listen(port);

  console.log("Listening on port %d in %s mode", port, app.settings.env);

  return app;
}

我已经尝试调试应用程序,node-inspector但它没用,因为应用程序似乎没有进入任何app.gets尝试匹配.当我尝试访问时,它会立即给我错误localhost:8888/lessons

编辑:

我想我找到了问题的根源:

• 我的/public目录有一个lessons文件夹
• 我的/views主意有一个lessons.ejs观点

当我改变/public/lessons成/public/lessons11例如,问题得到解决.有人可以向我解释原始场景中导致重定向循环的表达流程是什么吗？另外,我该怎么做才能解决它？

谢谢

Answer 1

有时候是这样的:

• 请求/lessons进来;
• 静态中间件看到public/lessons文件夹并假设它是预期的目标; 因为它是一个文件夹,它会生成一个重定向/lessons/(见下文);
• 静态中间件再次选择请求,但注意到index.html该文件夹中没有,并将其交给下一个中间件(connect-slashes);
• 该connect-slashes中间件消除了拖尾斜杠发出重定向到/lessons;
• 整个循环再次开始;

您可以阻止静态中间件添加尾部斜杠,这将修复您的重定向循环我认为:

app.use(express.static(__dirname + '/public', { redirect : false }));