Angular 7未根据请求发送正确的标头

Question

我无法在7号角中发送正确的标题！我在后端使用护照：

"app.get('/api/users', passport.authenticate('jwt', {session: false}), (req, res, next) => {... bla bla bla...}."

当我尝试将有效的令牌从邮递员发送到我的路径/ api /用户时，一切正常，但是当我从角度不这样做时。（*角度不显示错误！）假设“ Bearer validToken”是一个有效的令牌，这样我就发送了标头：

getAll() {

const httpOptions = {
headers: new HttpHeaders({
'Content-Type': 'application/json',
'Authorization': 'Bearer validToke.' 
  });
};

return this.http.get<user[]>(`http://localhost:3000/api/users`, httpOptions);
}

我可以从angular进行身份验证并获取Bearer令牌，一切正常，如果删除了password.authenticate（'jwt'，{session：false}），我可以获取用户列表。

感谢您的阅读！

Answer 1

我能够通过创建拦截器来解决这个问题：

import { Injectable } from '@angular/core';
    import { HttpRequest, HttpHandler, HttpEvent, HttpInterceptor } from '@angular/common/http';
    import { Observable } from 'rxjs';

    import { AuthenticationService } from '../_services/authentication.service';

    @Injectable()
    export class JwtInterceptor implements HttpInterceptor {
      constructor(private authenticationService: AuthenticationService) {}

      intercept(request: HttpRequest<any>, next: HttpHandler): Observable<HttpEvent<any>> {
        // add authorization header with jwt token if available
        let currentUser = this.authenticationService.currentUserValue;
        if (currentUser && currentUser.token) {
          request = request.clone({
            setHeaders: {
              Authorization: `${currentUser.token}`
            }
          });
        }

        return next.handle(request);
      }
    }

谢谢