Javascript Nodejs控制器返回承诺而不是布尔值
我正在呼叫控制器以返回true或false 控制器不工作:Javascript Nodejs控制器返回承诺而不是布尔值,javascript,node.js,model-view-controller,Javascript,Node.js,Model View Controller,我正在呼叫控制器以返回true或false 控制器不工作: const jwt = require('jsonwebtoken'); class TokenController { static async isValidToken(token) { try { jwt.verify(token, process.env.TOKEN_SECRET); return true; } catch {
const jwt = require('jsonwebtoken');
class TokenController {
static async isValidToken(token) {
try {
jwt.verify(token, process.env.TOKEN_SECRET);
return true;
} catch {
return false;
}
}
}
module.exports = TokenController;
const router = require('express').Router({ mergeParams: true });
const TokenController = require('../../controllers/token');
router.get('/', (req, res) => {
console.log(TokenController.isValidToken(req.cookies['auth-token']));
}
module.exports = router;
路由器:
const jwt = require('jsonwebtoken');
class TokenController {
static async isValidToken(token) {
try {
jwt.verify(token, process.env.TOKEN_SECRET);
return true;
} catch {
return false;
}
}
}
module.exports = TokenController;
const router = require('express').Router({ mergeParams: true });
const TokenController = require('../../controllers/token');
router.get('/', (req, res) => {
console.log(TokenController.isValidToken(req.cookies['auth-token']));
}
module.exports = router;
它返回的Promise{true}
或Promise{false}
取决于控制器,但当我在路由器中接收时,它返回一个Promise,但它应该返回一个布尔值
工作控制器
const ScrumTask = require('../models/ScrumTask');
const User = require('../models/User');
class ScrumController {
static async getTask(id) {
console.log(id);
const taskData = await ScrumTask.findOne(
{ _id: id },
async (err, data) => {
if (!err) {
return data;
} else {
console.log('error');
res.status(400).send(err);
}
}
);
return taskData;
}
}
module.exports = ScrumController;
const router = require('express').Router({ mergeParams: true });
const translate = require('../../../config/translate.json');
// Import Controllers
const TokenController = require('../../controllers/token');
const ScrumController = require('../../controllers/scrum');
router.get('/view_task/:id', async (req, res) => {
let id = req.params.id;
const taskData = await ScrumController.getTask(id);
}
module.exports = router;
路由器呼叫我的工作控制器
const ScrumTask = require('../models/ScrumTask');
const User = require('../models/User');
class ScrumController {
static async getTask(id) {
console.log(id);
const taskData = await ScrumTask.findOne(
{ _id: id },
async (err, data) => {
if (!err) {
return data;
} else {
console.log('error');
res.status(400).send(err);
}
}
);
return taskData;
}
}
module.exports = ScrumController;
const router = require('express').Router({ mergeParams: true });
const translate = require('../../../config/translate.json');
// Import Controllers
const TokenController = require('../../controllers/token');
const ScrumController = require('../../controllers/scrum');
router.get('/view_task/:id', async (req, res) => {
let id = req.params.id;
const taskData = await ScrumController.getTask(id);
}
module.exports = router;
如果您使用
async
,那么您总是会得到Promise
。
此外,我最好使用Promise.resolve
返回同步结果(您的案例):
或者,如果所有返回路径都是同步的,那么只需从函数定义中删除
async
。它确实可以工作,但我有另一个控制器返回字符串,它也使用async
函数,并且它不返回任何Promise
Ok,显示另一个控制器以及如何从它调用函数可能是因为它返回一个JSON类型变量,与函数返回的签名中包含async
的数据类型没有区别。它总是返回带有适当数据的承诺。我已经添加了工作控制器的代码。