我尝试在标头中传递JWT令牌。我正在使用以下代码。我注入了身份验证服务和导入的必需文件。但这不起作用。
我想为每个请求将JWT添加到HTTP标头中吗?我该如何实现?我需要我的后端使用授权令牌对每个请求进行身份验证。
Angular应用程序模块代码:
providers: [
AuthGuard,
{
provide: HTTP_INTERCEPTORS,
useClass: TokenInterceptor,
multi: true
}
]
角度拦截器代码:
import { Inject, Injectable, Injector } from '@angular/core';
import { HttpEvent, HttpHandler, HttpInterceptor, HttpRequest } from '@angular/common/http';
import { Observable } from 'rxjs/Observable';
import { switchMap } from 'rxjs/operators';
import { NbAuthJWTToken, NbAuthService, NB_AUTH_TOKEN_INTERCEPTOR_FILTER ,NbAuthToken} from '@nebular/auth';
/**
* TokenInterceptor
* @see https://angular.io/guide/http#intercepting-all-requests-or-responses
*/
@Injectable()
export class TokenInterceptor implements HttpInterceptor {
private tokenService: NbAuthJWTToken;
constructor(private injector: Injector,
@Inject(NB_AUTH_TOKEN_INTERCEPTOR_FILTER) protected filter) {
}
intercept(req: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
debugger;
if (!this.filter(req)) {
return this.authService.isAuthenticatedOrRefresh()
.pipe(
switchMap(authenticated => {
if (authenticated) {
debugger;
return this.authService.getToken().pipe(
switchMap((token: NbAuthToken) => {
const JWT = `Bearer ${token.getValue()}`;
req = req.clone({
setHeaders: {
Authorization: JWT,
},
});
return next.handle(req);
}),
)
} else {
// Request is sent to server without authentication so that the client code
// receives the 401/403 error and can act as desired ('session expired', redirect to login, aso)
return next.handle(req);
}
}),
)
} else {
return next.handle(req);
}
}
protected get authService(): NbAuthService {
return this.injector.get(NbAuthService);
}
}
我做错了什么?
答案 0 :(得分:0)
尝试这样做:
req = req.clone({ headers: req.headers.set('Authorization', JWT) });
还要确保逐步执行代码,然后查看会发生什么。确保您在首次生成令牌时将其存储,并从存储中检索该令牌以进行后续调用(我相信您已经在这样做了,但以防万一您没有这样做)。
答案 1 :(得分:-1)
您需要调试代码以检查为什么未添加令牌。但是您可以简化逻辑:
intercept(req, next) {
const tokenizedReq = req.clone({
setHeaders: {
Accept: 'application/json',
'Content-Type': 'application/json',
Authorization: `Bearer ${localStorage.getItem('token')}`
}
});
return next.handle(tokenizedReq);
}
这样,您尝试为每个请求添加令牌。如果缺少令牌,则用户将获得401的请求。 当用户进行身份验证时,只需将令牌添加到本地存储中即可。