TypeError：无法在nodejs中读取未定义的属性“email”

Posted 2021-04-04

我正在尝试使用nodejs制作api。在这里我正在为api制作注册路线，但问题是我每次尝试注册用户时都说这个。这是我得到的整个错误。

TypeError：无法读取未定义的属性“email”

TypeError: Cannot read property 'email' of undefined
    at C:/projects/blog-mern/backend/src/routes/users.js:7:13
    at Layer.handle [as handle_request] (C:projectslog-mernackend
ode_modu
lesexpresslib
outerlayer.js:95:5)
    at next (C:projectslog-mernackend
ode_modulesexpresslib
outer
oute
.js:137:13)
    at Route.dispatch (C:projectslog-mernackend
ode_modulesexpresslib
o
uter
oute.js:112:3)
    at Layer.handle [as handle_request] (C:projectslog-mernackend
ode_modu
lesexpresslib
outerlayer.js:95:5)
    at C:projectslog-mernackend
ode_modulesexpresslib
outerindex.js:28
1:22
    at Function.process_params (C:projectslog-mernackend
ode_modulesexpre
sslib
outerindex.js:335:12)
    at next (C:projectslog-mernackend
ode_modulesexpresslib
outerindex
.js:275:10)
    at Function.handle (C:projectslog-mernackend
ode_modulesexpresslib
outerindex.js:174:3)
    at router (C:projectslog-mernackend
ode_modulesexpresslib
outerind
ex.js:47:12)
    at Layer.handle [as handle_request] (C:projectslog-mernackend
ode_modu
lesexpresslib
outerlayer.js:95:5)
    at trim_prefix (C:projectslog-mernackend
ode_modulesexpresslib
oute
rindex.js:317:13)
    at C:projectslog-mernackend
ode_modulesexpresslib
outerindex.js:28
4:7
    at Function.process_params (C:projectslog-mernackend
ode_modulesexpre
sslib
outerindex.js:335:12)
    at next (C:projectslog-mernackend
ode_modulesexpresslib
outerindex
.js:275:10)
    at C:projectslog-mernackend
ode_modulesody-parserlib
ead.js:130:5

这是我的代码

车型/ users.js

import mongoose from 'mongoose';
import bcrypt from 'bcrypt';
import jwt from 'jsonwebtoken';

const schema = new mongoose.Schema({
    email: {
        type: String,
        required: true
    },
    passwordHash: {
        type: String,
        required: true
    }
}, {
    timestamps: true
});

schema.methods.setPassword = function setPassword(password) {
    this.passwordHash = bcrypt.hashSync(password, 10)
}

schema.methods.generateJWT = function generateJWT() {
    return jwt.sign({
        email: this.email,
    }, 'secret')
}

schema.methods.toAuthJSON = function toAuthJSON() {
    return {
        email: this.email,
        token: this.generateJWT()
    }
}

export default mongoose.model('User', schema);

路线/ users.js

import express from 'express';
import User from '../models/User';

const router = express.Router();

router.post('/', (req, res, next) => {
    const { email, password } = req.body.users;
    const user = new User({ email });
    user.setPassword(password);
    user.save().then(userRecord => {
        res.json({user: userRecord.toAuthJSON()})
    }).catch(err => {
        res.status(500).json({
            error: err
        })
    })
})

export default router;

我正在使用邮递员发送请求

答案

您的代码的问题是您正在尝试从users读取不存在的req.body密钥。您的origin req对象不包含users。

如果你console.log(req.body)，req.body看起来将完全像你的要求：

{
  email: "[e-mail]"
  passwordHash: "12345"
}

将您的代码更改为：

const { email, passwordHash } = req.body;
const user = new User({ email });