我的数据没有进入 Mern 栈认证项目的 MongoDB，为什么？

编程入门行业动态更新时间:2024-10-05 09:27:36

我的数据没有进入 Mern 栈认证<a href=https://www.elefans.com/category/jswz/34/1771421.html style= 项目的 MongoDB，为什么？"/>

我的数据没有进入 Mern 栈认证项目的 MongoDB，为什么？

我制作了后端和前端，尝试通过 axios 连接它们。当我启动后端时，在终端中写入连接到 MongoDB 并且一切正常，没问题。但是当我将我的用户数据放入注册表中时，页面重新加载但我不能'在我的 MongoDB 中找不到数据。这是我的代码：

// server.js
const express = require('express');
const mongoose = require('mongoose');
const bcrypt = require('bcrypt');
const cors = require('cors');
require('dotenv').config();

const app = express();
const port = 8000 || 5000;

// Middleware
app.use(cors());
app.use(express.json());

// Connect to MongoDB
mongoose
  .connect('mongodb+srv://<hide here too>:<password I hide here>@cluster0.uoltuxm.mongodb/?retryWrites=true&w=majority', {
    useNewUrlParser: true,
    useUnifiedTopology: true,
  })
  .then(() => console.log('Connected to MongoDB'))
  .catch((error) => console.error('Failed to connect to MongoDB:', error));

// User Model
const userSchema = new mongoose.Schema({
  email: { type: String, required: true, unique: true },
  password: { type: String, required: true },
});

const User = mongoose.model('User', userSchema);

// Registration Route
app.post('/register', async (req, res) => {
  try {
    const { email, password } = req.body;

    // Check if the email already exists
    const existingUser = await User.findOne({ email });
    if (existingUser) {
      return res.status(400).json({ message: 'Email already exists' });
    }

    // Hash the password
    const hashedPassword = await bcrypt.hash(password, 10);

    // Create a new user
    const newUser = new User({ email, password: hashedPassword });
    await newUser.save();

    res.status(201).json({ message: 'User registered successfully' },alert('sfdfsfs'));
  } catch (error) {
    console.error('Failed to register user:', error);
    res.status(500).json({ message: 'Failed to register user' });
  }
});

// Login Route
app.post('/login', async (req, res) => {
  try {
    const { email, password } = req.body;

    // Check if the user exists
    const user = await User.findOne({ email });
    if (!user) {
      return res.status(401).json({ message: 'Invalid credentials' });
    }

    // Check if the password is correct
    const isPasswordValid = await bcryptpare(password, user.password);
    if (!isPasswordValid) {
      return res.status(401).json({ message: 'Invalid credentials' });
    }

    res.status(200).json({ message: 'Login successful' });
  } catch (error) {
    console.error('Failed to login:', error);
    res.status(500).json({ message: 'Failed to login' });
  }
});

// Start the server
app.listen(port, () => {
  console.log(`Server is running on port ${port}`);
});

这是我在 React 中的注册表格：