在req.body（express，jade）中找不到提交按钮名称

Question

我只是为了自己的兴趣学习node.js。 我的node.js来源jade中存在问题。

有2个问题

1. 当我点击“保存”按钮时，我在req.body

中找不到“保存”

2. 点击按钮后，我收到了一条消息

   throw new Error('Can\'t set headers after they are sent.');

玉源

doctype html
    html
      head
        meta(charset='utf-8')
        title My Memo
      body
    h1 My Memo
    artcle
      form(method='post', enctype='multipart/form-data', action='/process/registerMemo')
        p
          label Author
          input(type='text', name='userName')
        p
          label Date
          input(type='date', name='writeDate')
        p
          label Description
          textarea(row='5', clos='40', name='usersNotes')
        p
          label Picture
          input(type='file', name='imgfile')
        p
          input(type='submit', value='save', name='save')
          input(type='submit', value='close', name='close')

JSP来源

app.post('/process/registerMemo', function(req, res) {
    console.log('/process/registerMemo called');
    if (req.body.save)
        console.log('save button touched');
    else
        console.log('exit button touched');
    upload(req, res, function(err) {
        if (err) {
            res.end("update failed");
        }

        var userName = req.body.userName;
        var writeDate = req.body.writeDate;
        var userNotes = req.body.usersNotes;
        console.log(req.body.userName);
        console.log(req.body.writeDate);
        console.log(req.body.usersNotes);
        console.log(req.body);
        if (req.body.save) {
            console.log('save button touched')            
            // var fileCount = files.length;
            // for( var i = 0; i < fileCount; i++){
            //   var savedFileName = files[i].filename;
            // }
            fs.writeFile('data/' + userName + '_' + Date.now(),
              userName + '/' + writeDate + '/' + userNotes, function(err) {
                  if (err) {
                      console.log(err);
                      res.status(500).send('Internal Server Error');
                  }
                  console.log('/public/myMemoResult should be called')
                  res.redirect('/public/registerMemo');
              })
        } else {
            // close button call
            console.log('close button touched')
            res.redirect('/public/myMemoResult');
        }
    });
});