javascript - 如何修复使用 Sequelize Node Express Mysql 插入数据库的问题？

Question

我正在尝试创建一个简单的注册表单，然后我将继续执行 Node js 新的其他 CRUD 操作

我已经创建了 mysql 数据库并完成了建模和与 Sequelize 的连接，我还使用 pug 创建了我的 View ，并且我为表单中的条目做了 console.log ，一切都很好，直到它到达数据库插入

var express = require('express');
var router = express.Router();
var Sequelize = require("sequelize");
var db = require('../src/database/connection');
var User = require('../src/model/User');

router.get('/', function(req, res, next){
  res.render('signup');
});
router.post('/register', function(req, res, next){
    let { username, useremail, pass, re_pass } = req.body;

    let errors = [];

    //checking feilds 
    if( !username || !useremail || !pass || !re_pass)
    {
        errors.push({msg: 'Please no field should be left empty'});
    }
    //checking Password
    if(pass !== re_pass)
    {
        errors.push({msg: 'Passwords Dont Match'});
    }
    //check Password Length
    if(pass.length < 7)
    {
        errors.push({msg: 'Passwords should be more than 7 characters '})
    }

    //reload page with contents if error encountered
    if(errors.length > 0)
    {
        res.render('signup', {
            errors,
            username,
            useremail,
            pass,
            re_pass
        });
    } else{
        console.log(req.body);
        User.create({
        username,
        useremail,
        pass,
        }).then(user => res.redirect('/register')).catch(err => console.log(err));
    }
});
module.exports = router;

这是我收到的错误。请帮忙

{ SequelizeValidationError: notNull Violation: User.email cannot be null,
notNull Violation: User.password cannot be null
    at Promise.all.then (C:\Users\ONLINEWIS-PROG-03\Documents\Node\waiyu\node_modules\sequelize\lib\instance-validator.js:74:15)
    at tryCatcher (C:\Users\ONLINEWIS-PROG-03\Documents\Node\waiyu\node_modules\bluebird\js\release\util.js:16:23)
    at Promise._settlePromiseFromHandler (C:\Users\ONLINEWIS-PROG-03\Documents\Node\waiyu\node_modules\bluebird\js\release\promise.js:512:31)
    at Promise._settlePromise (C:\Users\ONLINEWIS-PROG-03\Documents\Node\waiyu\node_modules\bluebird\js\release\promise.js:569:18)
    at Promise._settlePromise0 (C:\Users\ONLINEWIS-PROG-03\Documents\Node\waiyu\node_modules\bluebird\js\release\promise.js:614:10)
    at Promise._settlePromises (C:\Users\ONLINEWIS-PROG-03\Documents\Node\waiyu\node_modules\bluebird\js\release\promise.js:694:18)
    at Promise._fulfill (C:\Users\ONLINEWIS-PROG-03\Documents\Node\waiyu\node_modules\bluebird\js\release\promise.js:638:18)
    at PromiseArray._resolve (C:\Users\ONLINEWIS-PROG-03\Documents\Node\waiyu\node_modules\bluebird\js\release\promise_array.js:126:19)
    at PromiseArray._promiseFulfilled (C:\Users\ONLINEWIS-PROG-03\Documents\Node\waiyu\node_modules\bluebird\js\release\promise_array.js:144:14)
    at Promise._settlePromise (C:\Users\ONLINEWIS-PROG-03\Documents\Node\waiyu\node_modules\bluebird\js\release\promise.js:574:26)
    at Promise._settlePromise0 (C:\Users\ONLINEWIS-PROG-03\Documents\Node\waiyu\node_modules\bluebird\js\release\promise.js:614:10)
    at Promise._settlePromises (C:\Users\ONLINEWIS-PROG-03\Documents\Node\waiyu\node_modules\bluebird\js\release\promise.js:694:18)
    at _drainQueueStep (C:\Users\ONLINEWIS-PROG-03\Documents\Node\waiyu\node_modules\bluebird\js\release\async.js:138:12)
    at _drainQueue (C:\Users\ONLINEWIS-PROG-03\Documents\Node\waiyu\node_modules\bluebird\js\release\async.js:131:9)
    at Async._drainQueues (C:\Users\ONLINEWIS-PROG-03\Documents\Node\waiyu\node_modules\bluebird\js\release\async.js:147:5)
    at Immediate.Async.drainQueues [as _onImmediate] (C:\Users\ONLINEWIS-PROG-03\Documents\Node\waiyu\node_modules\bluebird\js\release\async.js:17:14)
    at runCallback (timers.js:705:18)
    at tryOnImmediate (timers.js:676:5)
    at processImmediate (timers.js:658:5)
  name: 'SequelizeValidationError',
  errors:
   [ ValidationErrorItem {
       message: 'User.email cannot be null',
       type: 'notNull Violation',
       path: 'email',
       value: null,
       origin: 'CORE',
       instance: [User],
       validatorKey: 'is_null',
       validatorName: null,
       validatorArgs: [] },
     ValidationErrorItem {
       message: 'User.password cannot be null',
       type: 'notNull Violation',
       path: 'password',
       value: null,
       origin: 'CORE',
       instance: [User],
       validatorKey: 'is_null',
       validatorName: null,
       validatorArgs: [] } ] }

Answer 1

似乎req.body始终为空 使用body parser将请求正文放入 req.body

const express = require('express'),
      app = express(),
      bodyParser = require('body-parser');

// support parsing of application/json type post data
app.use(bodyParser.json());

//support parsing of application/x-www-form-urlencoded post data
app.use(bodyParser.urlencoded({ extended: true }));