Question

我试图点击API来执行一个非常简单的get请求，但由于我收到身份验证错误，因此选项似乎没有提供，即使相同的身份验证令牌适用于Postman。这是代码：

import { HttpClient, HttpHeaders } from '@angular/common/http';



@Injectable()
export class UsersService {

  private nearby_url: string = APP_CONFIG.apiEndpoint + '/users/closest/';
  private me_url: string = APP_CONFIG.apiEndpoint + '/users/me/';
  private conversations_url: string = APP_CONFIG.apiEndpoint + '/users/conversations/';

  constructor(private http: HttpClient) { }

  createAuthorizationHeader() {
    var headers = new HttpHeaders();
    // get auth token

    // append auth token to headers
    headers.append("Authorization", 'Token xxxxxxxxxxxyyyyyyyyyyyyzzzzzzzzz');

    return headers
  }

  getPersonResponse(url): Observable<PersonResponse> {
    const options = {
      headers: this.createAuthorizationHeader()
    };

    return this.http.get(url, options)
      .map((response: Response) => response)
      .catch((error: any) => Observable.throw(error.error || 'Server error'));
  }

  getNearby(): Observable<PersonResponse> {
    return this.getPersonResponse(this.nearby_url);
  }

  getMe(): Observable<PersonResponse> {
    return this.getPersonResponse(this.me_url);
  }

  getConversations(): Observable<PersonResponse> {
    return this.getPersonResponse(this.conversations_url);
  }

}

我在这里做错了什么？

Answer 1

改为

const headers = new HttpHeaders()
            .set("X-CustomHeader", "custom header value");

请注意，我们正在通过链接构建HTTPHeaders对象连续的set（）方法。这是因为HTTPHeaders是不可变的，及其API方法不会导致对象突变。相反，打电话给 set将返回包含新值的新HTTPHeaders对象属性。

更多相同内容 - https://rahulrsingh09.github.io/AngularConcepts/services

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