无法使用mongoose在mongodb中插入哈希(Bcrypt)密码

const mongoose = require('mongoose');
const bcrypt = require('bcrypt');

const userSchema = new mongoose.Schema({
  username: {
    type: String,
    required: true,
    unique: true
  },
  password: {
    type: String,
    required: true,
    select: false  // 隐藏密码字段的默认显示
  }
});

// 在保存用户之前，对密码进行哈希处理
userSchema.pre('save', async function(next) {
  const user = this;
  if (!user.isModified('password')) return next();

  try {
    const salt = await bcrypt.genSalt(10);
    const hash = await bcrypt.hash(user.password, salt);
    user.password = hash;
    next();
  } catch (error) {
    return next(error);
  }
});

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

module.exports = User;

const User = require('./models/user');

// 创建新用户
const createUser = async (username, password) => {
  try {
    const user = new User({
      username,
      password
    });
    await user.save();
    console.log('用户创建成功');
  } catch (error) {
    console.error('用户创建失败', error);
  }
};

// 调用创建用户函数
createUser('john', 'password123');