Question

我一直试图使用mongoose将带有用户名和令牌的文档保存在mongodb数据库中。每当客户端向服务器发出请求时，令牌都会更新并保存在数据库中。要更新文档，我要使用用户名（因为它是唯一的）查询集合，然后更新返回的文档的（例如doc）令牌字段，然后调用doc.save（）。问题是doc.save（）交替给我用户名验证错误（即，在第一次尝试和第三次尝试中都起作用，依此类推...），但在第二次尝试，第四次尝试中均失败。

如果我删除了用户名验证约束，那么代码将起作用，但是由于明显的原因，我无法删除验证约束。

usermodel.js

    let mongoose = require('mongoose');

let user = new mongoose.Schema({
    username: {
        type: String,
        match: /^[A-Za-z0-9_]+$/g,
        unique: true,
        required: true,
    },
    password: {
        type: String,
        match: /.{8,}/g,
        required: true,
    },
    token: String
});

module.exports = mongoose.model('user', user);

getData.js

   module.exports = async function putData(database, model, query, fields, queryType='one'){
    let mongoose = require('mongoose');
    const connectionURL = `mongodb://127.0.0.1:27017/${database}`;
    mongoose.connect(connectionURL, {
        useNewUrlParser: true,
        useCreateIndex: true
    });

    return model.init().then(async ()=>{
        let res;
        switch(queryType){
            case 'one':
                res = await model.findOne(query).select(fields).exec();
                break;
            case 'all':
                res = await model.find(query).select(fields).exec();
        }
        return res;
    })
}

putData.js

   module.exports = async function putData(database, model, data){
    let mongoose = require('mongoose');
    const connectionURL = `mongodb://127.0.0.1:27017/${database}`;
    mongoose.connect(connectionURL, {
        useNewUrlParser: true,
        useCreateIndex: true
    });

    return model.init().then(async ()=>{
        console.log('Username is, ', data.username);
        let prom = await data.save();
        return prom;
    });
}

updateToken.js


let user = require('../models/users-model');
let putData = require('../putData');
let bcrypt = require('bcrypt');
let getData = require('../getData');

function update_token(username, token, callbackfn){
    getData('users', user, {
        username: username,
        token: token
    }, 'username token').then((userData)=>{
        console.log(userData);
        if(userData){
            bcrypt.hash(JSON.stringify(userData), 5).then((hash)=>{
                userData.token = hash;
                return putData('users', user, userData, true);
            }).then((data)=>{
                callbackfn(null, data);
            }).catch((err)=>{
                //console.log(err);
                callbackfn(err, null);
            })
        }
        else{
            callbackfn(new Error('Invalid token'), null);
        }
    }).catch((err)=>{
        console.log(err);
        callbackfn(err, null);
    })
}

module.exports = {
    update_token: update_token
}

server.js

let express = require('express');
let app = express();
let usersRouter = require('./routers/users');
let tourMakerRouter = require('./routers/tour-maker');
let bodyparser = require('body-parser');
let utils = require('./utils/utils');
let getData = require('./getData');
let user = require('./models/users-model');
const host = '127.0.0.1';
const port = 8000;

let jsonencodedparser = bodyparser.json();

app.post('/', jsonencodedparser, (req, res)=>{
    console.log('Request received!');
    utils.update_token(req.body.username, req.body.token, (err, data)=>{
        if(err){
            console.log(err);
            if(err.message === 'Invalid token'){
                res.status(401).end();
            }
            res.status(500).end();
        }
        else{
            res.json({
                token: data.token,
                username: data.username
            });
        }
    })
})

app.listen(port, host, ()=>{
    console.log(`Listening at http://${host}:${port}`);
})

第一个请求

Request received! { _id: 5cdadbdfeeb7c02610b14f1a, username: 'user1', token: '$2b$05$oHkFuyW532Yq6p2o04TumeAON8SBtIL/lZ.Kty1gX2lqHqnMEI/Pa' } Username is, user1

第二个请求：

Request received! { _id: 5cdadbdfeeb7c02610b14f1a, username: 'user1', token: '$2b$05$gaS5U4kRiVqCShKbiZe/t.LTUBTh5H7AAE7p2MXIUW65xezbPslG2' } Username is, user1 { ValidationError: user validation failed: username: Path用户名is invalid (user1). at ValidationError.inspect (/home/arpit/Study/Projects/tour-maker/node_modules/mongoose/lib/error/validation.js:59:24) at formatValue (util.js:430:38) at inspect (util.js:324:10) at format (util.js:191:12) at Console.log (console.js:130:21) at utils.update_token (/home/arpit/Study/Projects/tour-maker/server/server.js:18:21) at bcrypt.hash.then.then.catch (/home/arpit/Study/Projects/tour-maker/server/utils/utils.js:20:17) at <anonymous> at process._tickCallback (internal/process/next_tick.js:188:7) errors: { username: { ValidatorError: Path用户名is invalid (user1). at new ValidatorError (/home/arpit/Study/Projects/tour-maker/node_modules/mongoose/lib/error/validator.js:29:11) at validate (/home/arpit/Study/Projects/tour-maker/node_modules/mongoose/lib/schematype.js:978:13) at /home/arpit/Study/Projects/tour-maker/node_modules/mongoose/lib/schematype.js:1031:11 at Array.forEach (<anonymous>) at SchemaString.SchemaType.doValidate (/home/arpit/Study/Projects/tour-maker/node_modules/mongoose/lib/schematype.js:987:14) at /home/arpit/Study/Projects/tour-maker/node_modules/mongoose/lib/document.js:2101:9 at _combinedTickCallback (internal/process/next_tick.js:131:7) at process._tickCallback (internal/process/next_tick.js:180:9) message: 'Path用户名is invalid (user1).', name: 'ValidatorError', properties: [Object], kind: 'regexp', path: 'username', value: 'user1', reason: undefined, [Symbol(mongoose:validatorError)]: true } }, _message: 'user validation failed', name: 'ValidationError' }

感谢您的帮助。预先感谢！

Answer 1

我没有足够的声誉来发表评论，但是您是否尝试过每次检查请求以查看作为用户名实际发送的内容？出于某些原因可能存在一些验证问题。

如何修复：猫鼬在使用相同文档执行替代doc.save（）时给出验证错误

1 个答案: