app.get('/test',function(req,res) {
  res.render('test',{});
});
app.post('/comment',function(req,res) {
  console.log(req.body);
  res.redirect('back');
});

-------------------- test.jade ------------------------
!!!
html
  head
    title test
  body
    form(method='post',action='/comment')
      input(type='text',name='postername')
      input(type='text',name='postercomment')
      input(type='submit',value='submit')