【发布时间】：2021-06-03 01:18:08
【问题描述】：
我的标题中没有 cookie。我在第 30 行遇到错误。 错误是在将标头发送到客户端后无法设置标头 UnhandledPromiseRejectionWarning：未处理的承诺拒绝。此错误源于在没有 catch 块的情况下抛出异步函数内部，或拒绝未使用 .catch() 处理的承诺 我正在使用 Postman 来查看响应。如何获取cookie然后注销！！
user.js
1. const express=require('express')
2. const router=express.Router()
3. const User=require('../models/User')
4. const bcrypt=require('bcryptjs')
5. const jwt=require('jsonwebtoken')
6. router.post('/register',async(req,res)=>{
a. //CHECKING IF EMAIL EXISTS
7. const email_exists=await User.findOne({email:req.body.email})
8. // console.log('email_exists',email_exists)
9. if(email_exists) return res.status(400).send('Email already exists')
10. //HASHING PASSWORD
11.
12. const salt=await bcrypt.genSalt(10)
13. const hashPassword=await bcrypt.hash(req.body.password,salt)
14. //Create a new User
15. const user=new User({
a. name:req.body.name,
b. email:req.body.email,
c. password:hashPassword
16. });
17. try{
18. const savedUser=await user.save()
19. //sending only user id
20. res.json({user:user._id})
21. }catch(error){
a. res.status(400).send(error)
22. }
23. });
24. router.post('/login',async(req,res)=>{
a. //CHECKING IF EMAIL EXISTS
b. const user=await User.findOne({email:req.body.email})
c. if(!user) return res.status(400).send('Email or pass not exists')
d. //CHECKING PASSWORD IS CORRECT
e. const validPass=await bcrypt.compare(req.body.password,user.password)
f. if(!validPass) return res.status(400).send('Invalid Password!')
g. //creating and assigning a token
h
25. const token=jwt.sign({_id:user._id},process.env.ACCESS_TOKEN_SECRET,{expiresIn:'15m'})
26.
27.
28. // res.cookie() does is set the HTTP Set-Cookie header with the options provided.
29. res.header('Authorization',token).send({token:token,refresh_Token:refreshToken})
30. res.cookie('access_token',token,{maxAge:3600,httpOnly:true})
31.
32. })
33.
34. module.exports=router;
server.js
const express = require("express");
const app = express();
require("dotenv/config");
const PORT = process.env.PORT || 4000;
const mongoose = require("mongoose");
const cookieParser=require('cookie-parser')
mongoose.connect(
process.env.DB_URL,
{ useNewUrlParser: true, useUnifiedTopology: true },
() => console.log("connected to DB")
);
app.use(cookieParser());
app.use(express.json());
app.use("/api/user", require("./routes/user"));
app.use("/api/posts", require("./routes/posts"));
app.listen(PORT, () => console.log(`Server is running at port ${PORT}`));
【问题讨论】：
标签： javascript node.js mongodb express cookies