在 Angular 中添加 header 'Authorization'

Question

我想为每个请求设置 header。

我正在使用 request.clone 在 Angular 7.2.14

中设置 header

import { HttpInterceptor, HttpEvent, HttpRequest, HttpHandler, HttpResponse, HttpErrorResponse, HttpHeaders } from '@angular/common/http';
import { Observable } from 'rxjs';
import { map } from 'rxjs/operators';

export class AuthInterceptor implements HttpInterceptor {


    intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {        
        const token=localStorage.getItem('token');
        console.log(token);
        request.clone({ headers: request.headers.set('Authorization', token) });    
        return next.handle(request)
    }

}

我没有收到错误，但我可以看到授权 header

Answer 1

request.clone() returns 一个对象，不改变原点。

尝试将 request.clone() 作为参数传递。

    intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {        
        const token=localStorage.getItem('token');
        console.log(token);    
        return next.handle(request.clone({ headers: request.headers.set('Authorization', token) });)
    }

Answer 2

您返回的是旧请求，而不是克隆请求。

intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
    const token = localStorage.getItem('token');
    request = request.clone({
        setHeaders: {
            Authorization: `Bearer ${token}`
        }
    });

    return next.handle(request);
}

在 Angular 中添加 header 'Authorization'

Adding header 'Authorization' in Angular

token

interceptor

angular