我一直在寻找解决方案,但没有成功。如果用户获得授权,我需要调用服务器,并且我需要 canActivate 方法来等待该调用的结果。但我似乎无法将各个部分拼凑在一起。下面是我的代码,我的问题在代码的注释中。
canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<boolean> {
let user: EUser = new EUser();
user.sessionId = localStorage.getItem("sessionId");
//I am not sure how to implement this part.
// I need to recieve the response and get user.isAuthorized value and return it
// as an observable.
this.authenticationService.isAuthorized(user).subscribe((user)=>{
//Here i need to get user.isAuthorized and
//if the value is false, i need to navigate to login with this.router.navigate['login'] and return it.
//if the values it true, i need the code continue as it is.
});
}
身份验证服务
isAuthorized(user:EUser){
return this.http.post(ConnectionHelper.SERVER_URL+
ConnectionHelper.USER+ConnectionHelper.ISAUTHORIZED,user).map(res => res.json());
}
最佳答案
您的方法是正确的,您只需将服务器响应映射到 bool
值即可。例如:
export interface AuthState {
username:string;
sessionId:string;
isAuthorized:boolean;
}
isAuthorized(user:EUser): Observable<AuthState> {
return this.http.post(ConnectionHelper.SERVER_URL+
ConnectionHelper.USER+ConnectionHelper.ISAUTHORIZED,user)
.map(res => res.json());
}
// Inject Router instance in the constructor of the guard class
// import required rxjs operators
canActivate(route: ActivatedRouteSnapshot, state: RouterStateSnapshot): Observable<boolean> {
let user: EUser = new EUser();
user.sessionId = localStorage.getItem("sessionId");
return this.authenticationService.isAuthorized(user)
.map(user => user.isAuthorized)
.do(auth => {
if(!auth){
this.router.navigate(['/login']);
}
});
}
关于angular - 从 canActivate 方法返回 Observable<boolean> 并在 false 时重定向,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/47155224/