javascript - 如何让 bcyrpt 比较承诺正常工作?
问题描述
我以前有这个工作,但现在由于某种原因它坏了。我MariaDB
用作数据库,需要比较密码,但它给了我一个错误Unexpected Identifier on "bcrypt" after await
。当我删除 时await
,它可以工作,但即使密码错误。我在这里做错了什么?谢谢
编辑:我忘了在 .then 之后包含用户信息。当我发布这个问题时,我必须删除它并附上一些评论。我加回来了。这是我的代码:
//data connection pool
const pool = require('../models/db');
const { handleError, ErrorHandler } = require('../helpers/error');
const bcrypt = require('bcrypt');
module.exports = (req, res) => {
//destructuring assignment
const {user_name, password} = req.body;
let hashedPassword;
//TODO: hash password
var sql = `SELECT * FROM Govt_profiles WHERE
(user_name = ?)`;
//pool.query() is shortcut for pool.getConnection() + connection.query() + connection.release()
pool.query(sql, [user_name], async (err, data) => {
})
.then(rows => {
const user = rows.find( user => user['User_Name'] === user_name);
if (user == null) {
return res.status(400).send('Cannot find user');
}
try {
if (await bcrypt.compare(password, user['Password'])) {
console.log('Password: ', password, 'hashedPassword: ', hashedPassword);
console.log("this is a loginUser: ");
console.log(req.session);
//return res.redirect('questions')
return res.render('user-progress', {
userName: req.session.user_name,
attempts: req.session.attempts,
grade: req.session.grade
})
}
} catch(e) {
console.log("something broke: ", e);
res.status(500).send();
}
})
.catch(err => {
console.log(err.message);
console.log("hey couldn't find user");
req.session.error = new ErrorHandler(404, 'Incorrect email or last name');
res.render('login_user', {
//err: err (or if same name to this)
//err
error: req.session.error
});
})
}
我尝试了卢卡斯的建议,并得到了这个错误:
C:\users\daniel\documents\git\usa-govt-quiz\controllers\loginUser.js:41
const isValidPsw = await bcrypt.compare(password, user['Password']);
^^^^^
SyntaxError: await is only valid in async function
at wrapSafe (internal/modules/cjs/loader.js:979:16)
at Module._compile (internal/modules/cjs/loader.js:1027:27)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
at Module.load (internal/modules/cjs/loader.js:928:32)
at Function.Module._load (internal/modules/cjs/loader.js:769:14)
at Module.require (internal/modules/cjs/loader.js:952:19)
at require (internal/modules/cjs/helpers.js:88:18)
at Object.<anonymous> (C:\users\daniel\documents\git\usa-govt-quiz\server.js:5:29)
at Module._compile (internal/modules/cjs/loader.js:1063:30)
at Object.Module._extensions..js (internal/modules/cjs/loader.js:1092:10)
[nodemon] app crashed - waiting for file changes before starting...
还有其他想法吗?
解决方案
我能够通过在行前放置一个“异步”来解决这个问题。这对我来说似乎很奇怪,我不知道这是否正常,但它有效。
这是我修改后的最终代码:
.then(async rows => {
const user = rows.find( user => user['User_Name'] === user_name);
if (user == null) {
return res.status(400).send('Cannot find user');
}
try {
if (await bcrypt.compare(password, user['Password'])) {
console.log('Password: ', password, 'hashedPassword: ', hashedPassword);
console.log("this is a loginUser: ");
console.log(req.session);
//return res.redirect('questions')
return res.render('user-progress', {
userName: req.session.user_name,
attempts: req.session.attempts,
grade: req.session.grade
})
}
} catch(e) {
console.log("something broke: ", e);
res.status(500).send();
}
})
.catch(err => {
console.log(err.message);
console.log("hey couldn't find user");
req.session.error = new ErrorHandler(404, 'Incorrect email or last name');
res.render('login_user', {
//err: err (or if same name to this)
//err
error: req.session.error
});
})
}
推荐阅读
- swift - UITableView reloadRows 有时会崩溃
- mysql - 我想在 yii2 框架中选择并显示两个日期之间的月份和日期
- maven - Jenkins 无法构建 maven 和 gradle 项目
- python - 如何在 python Ubuntu 中将 PPT 文件转换为 PDF?
- javascript - Vue 在 v-for 循环内动态添加一个组件
- python - 根据其他列中的值替换值,如果条件不满足则保持原样
- c++ - 抛出多个异常时,catch 块执行的顺序是什么,为什么?
- kubernetes - 为什么内部通信的通信时间(速度)比以前慢了一点?
- javascript - 如何从控制器渲染两种类型的数据以在 node.js 中查看?
- ajax - 在 ajax 发布请求中,我的应用被 CORS 策略错误阻止