Express.js request.body 不起作用

Question

>我有一个简单的登录表单，问题是当我按"提交"时，服务器端的request.body是空的。我看到bodyParser是一个基本部分，但在我的情况下，它是在路由之前声明的，所以我认为问题是另一个问题。这是我的服务器页面应用程序.js

var favicon = require('serve-favicon');
var logger = require('morgan');
var cookieParser = require('cookie-parser');
var bodyParser = require('body-parser');
var index = require('./routes/index');
var users = require('./routes/users');
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: true }));
app.use(cookieParser());
app.use(express.static(path.join(__dirname, 'public')));
app.use('/', index);
app.use('/users', users);
// 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 handler
app.use(function(err, req, res, next) {
 // set locals, only providing error in development
 res.locals.message = err.message;
 res.locals.error = req.app.get('env') === 'development' ? err : {};
 // render the error page
 res.status(err.status || 500);
 res.render('error');
});
app.listen(3000);
module.exports = app;

这是索引.js

var express = require('express');
var router = express.Router();

function Login(req, res){
 var mongoClient = require('mongodb').MongoClient;
 mongoClient.connect('mongodb://localhost:27017/squaredDB', function(err, db)  {
 if(err) throw err;
  db.collection('users').find({email: req.body.email}, function(err, data){
   console.log(req.body);
  });
 });
}

 /* GET home page. */
 router.get('/', function(req, res, next) {
  res.render('index', { title: 'Express' });
 });
 router.post('/', function(req, res, next) {
  Login(req, res);
  res.render('app-home', { title: '' });
 });
 module.exports = router;

这是我的玉石模板形式：

form(method="post" action="/")
  label Email
  input(type="text" placeholder="Email")
  label Password
  input(type="password" placeholder="Password")
  input(type="submit" value="login")

Answer 1

> 模板中输入字段缺少name属性。如果没有这些，浏览器将不会在表单中提交它们。

Answer 2

将

名称属性添加到输入字段中，它现在可以通过请求访问该字段，例如 req.body.name

<form action="/", method="POST">
    <input type="text" placeholder="name" name="name">
    <button type="submit">Submit</button>
</form>