可以通过创建一个HttpInterceptor来解决这个问题，具体步骤如下：

1. 创建HttpInterceptor（例如KeycloakInterceptor）来拦截HTTP请求并添加Bearer令牌：

import { Injectable } from '@angular/core'; import { HttpEvent, HttpHandler, HttpInterceptor, HttpRequest } from '@angular/common/http'; import { Observable } from 'rxjs'; import { KeycloakSecurityService } from './keycloak-security.service';

@Injectable() export class KeycloakInterceptor implements HttpInterceptor {

constructor(private keycloak: KeycloakSecurityService) { }

intercept(request: HttpRequest, next: HttpHandler): Observable> { if (this.keycloak.hasValidToken()) { request = request.clone({ setHeaders: { Authorization: Bearer ${this.keycloak.getToken()} } }); } return next.handle(request);

} }

2. 将此拦截器注册到NgModule中的providers中：

@NgModule({ declarations: [ ... ], imports: [ ... ], providers: [ ..., { provide: HTTP_INTERCEPTORS, useClass: KeycloakInterceptor, multi: true, }, ], bootstrap: [ ... ] }) export class AppModule { }

3. 可以在KeycloakSecurityService中实现hasValidToken()和getToken()方法来检查并获取有效的Bearer令牌。

这样在Angular-Keycloak中就会默认添加Bearer令牌到HTTP请求中了。