我在创建用户时使用了bcrypt来哈希密码 . 登录时，我想将哈希值与字符串密码进行比较 . 但是，当我使用邮递员登录时，我收到404错误"headers have already been sent" . 我查看了koa git论坛using crypto with koa 2，并且接受的答案建议将函数包装在异步等待中，这就是我为什么节点不断向我发送'headers have already been sent'错误 .
var User = db.get('users');
var Review = db.get('reviews');
//this create user function works as intended...
module.exports.create = async (ctx, next) => {
if ('POST' != ctx.method) return await next();
let user = ctx.request.body;
console.log('CREATE USER params:');
console.log(user);
console.log(user.username);
let users = await User.find({username:user.username});
console.log(users); //why is this a function???
if (users.length > 0) {
ctx.status = 400;
ctx.body = {
errors:[
'Username already exists.'
]
};
} else {
const hash = await bcrypt.hash(user.password, 10);
await User.insert({username:user.username, password:hash});
console.log('Creating user…');
console.log(user);
ctx.body = filterProps(user, ['username']);
ctx.status = 201;
}
};
module.exports.signIn = async (ctx, next) => {
const encoded = ctx.request.headers.authorization.split(' ')[1];
const decoded = base64url.decode(encoded);
const [username, password] = decoded.split(':');
const user = await User.findOne({username:username});
//problematic code here...
await bcrypt.compare(password, user.password, function (err, res) {
if (res) {
ctx.status = 200;
ctx.body = 'success';
} else {
ctx.status = 401;
ctx.body = {
errors:['password incorrect for this username']
}
}
});
}
1 回答
所以问题在于我如何使用bcrypt比较 . 我将结果存储在变量中，而不是使用回调，它可以工作 . 为什么，我不知道......