这是我收到的错误消息的一部分:
[Error] ERROR – TypeError: undefined is not an object (evaluating '_co.user.username') TypeError: undefined is not an object (evaluating '_co.user.username')(anonymous function)checkAndUpdateView — core.js:44...
在我的应用程序的ionic serve
版本上,我的登录过程工作正常,并且用户的数据也很好,但是在ios上,我可以看到该错误消息,例如json编码无法正常工作或其他原因。为什么JSON在网站上可以正常运行,而在应用程序上却不能正常运行?这是TokenService
的内容:
constructor(private cookieService: CookieService) {}
setToken(token) {
this.cookieService.set("chat_token", token);
}
getToken() {
return this.cookieService.get("chat_token");
}
deleteToken() {
this.cookieService.delete("chat_token");
}
getPayload() {
const token = this.getToken();
let payload;
if (token) {
payload = token.split(".")[1];
payload = JSON.parse(window.atob(payload));
}
return payload.data;
}
这是loginUser
中的LoginComponent
函数,该函数在登录时触发:
loginUser() {
this.showSpinner = true;
this.authService.loginUser(this.loginForm.value).subscribe(
data => {
this.tokenService.setToken(data.token);
localStorage.setItem("currentUser", JSON.stringify(data));
this.loginForm.reset();
setTimeout(() => {
this.router.navigate(["/streams"]);
}, 200);
},
err => {
this.showSpinner = false;
if (err.error.message) {
this.errorMessage = err.error.message;
}
}
);
}
现在,服务器端,我在route /目录中有此路由,在文件authRoutes.js
中表示的节点中:
router.post('/login', AuthCtrl.LoginUser);
然后我将其保存在routes /目录中的文件userRoutes.js
中:
const express = require('express');
const router = express.Router();
const UserCtrl = require('../controllers/users');
const AuthHelper = require('../Helpers/AuthHelper');
router.get('/users', AuthHelper.VerifyToken, UserCtrl.GetAllUsers);
router.get('/user/:id', AuthHelper.VerifyToken, UserCtrl.GetUser);
router.get(
'/username/:username',
AuthHelper.VerifyToken,
UserCtrl.GetUserByName
);
router.post('/user/view-profile', AuthHelper.VerifyToken, UserCtrl.ProfileView);
router.post(
'/change-password',
AuthHelper.VerifyToken,
UserCtrl.ChangePassword
);
module.exports = router;
这是节点服务器端控制器auth.js的一部分:
async LoginUser(req, res) {
if (!req.body.username || !req.body.password) {
return res.status(HttpStatus.INTERNAL_SERVER_ERROR).json({ message: "No empty fields allowed" });
}
await User.findOne({ username: Helpers.firstUpper(req.body.username) })
.then(user => {
if (!user) {
return res.status(HttpStatus.NOT_FOUND).json({ message: "Username not found" });
}
return bcrypt.compare(req.body.password, user.password).then(result => {
if (!result) {
return res
.status(HttpStatus.INTERNAL_SERVER_ERROR)
.json({ message: "Password is incorrect" });
}
const token = jwt.sign({ data: user }, dbConfig.secret, {
expiresIn: "5h"
});
res.cookie("auth", token);
return res.status(HttpStatus.OK).json({ message: "Login successful", user, token });
});
})
.catch(err => {
console.log("Error is:");
console.log(err);
return res.status(HttpStatus.INTERNAL_SERVER_ERROR).json({ message: "Error occured" });
});
}
我通过将所有存储的数据从CookieService(这是导致错误的主要原因)转移到localStorage来解决此问题的方法。与其将有效负载和该cookie存储在CookieService中,不如将其转移到localStorage,而且我没有任何其他问题。似乎越简单越好。