无法使用Node＆Express（Jade，MongoDB，Express，Node）进行POST

Question

I have a form in which a user can select a .xlsx file and upload it:

      p Upload New Schedule
      #uploadNew
        form(id = "form1", action="/uploadNew", method="post", enctype="multipart/form-data")
          input(type="file", id="control", name="XLupload")
          br
          input(type="submit" value="Upload" name="Submit")

in my main app.js I have this route to deal with it.

var uploads = require('./routes/upload');
//Make the db accessible to various http requests
app.use(function(req, res, next) {
  req.db = dbMain;
  next();
});
app.use('/', routes);
app.use('/upload', uploads);

and In my upload.js file I have the following:

var xlsx = require('xlsx');
var multer = require('multer');
var upload = multer({dest: './uploads'});
var excel_upload = upload.single('XLupload');

router.get('/upload', stormpath.groupsRequired(['Enforced']), function(req, res) {
    res.render('upload', {
        title: 'Uploading Excel File'
    });
    next();
});

router.post('/upload', excel_upload, function(req, res) {
    // Get the path to the uploaded Excel file
    var fileObject = req.file;
    var filePath = fileObject.path;

    // Get collection instance which will store the data from the newly posted schedule
    var dbLocal = req.db;
    var insertionCollection = dbLocal.collection('chip');
    .....

However, when I start up and listen at localhost, when I select a file and try to upload I get error cannot POST /upload. When I did not have routes and had everything in the main app.js file, this was not an issue. What did I mess up by introducing routes?

Answer 1

This:

app.use('/upload', uploads);

Combined with this:

router.post('/upload', ...)

Declares this route: POST /upload/upload

If you mount a router (using app.use(PATH, router) ), PATH adds a prefix to all the routes handled by that router. Your router need to declare routes relative to that prefix:

router.post('/', ...)