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javascript - 如何以角度将自定义标头添加到httpRequest

问题描述

我正在尝试http get()通过传递一些请求来发出请求values，headers现在我正在替换headers这样的：

import { HttpClient, HttpHeaders } from '@angular/common/http';
import { Injectable } from '@angular/core';
import {ICustomer} from 'src/app/models/app-models';

@Injectable({
  providedIn: 'root'
})
export class MyService {
private baseUrl = '....api url....';
public authKey = '....auth_key......';

  constructor(private http: HttpClient) { }

  public async AllCustomers(): Promise<ICustomer[]> {
   const apiUrl = `${this.baseUrl}/customers`;

   return this.http.get<ICustomer[]>(apiUrl ,
    {headers: new HttpHeaders({Authorization: this.authKey})}).toPromise();<=====
  }

}

当我像这样替换标题时：

headers: new HttpHeaders({Authorization: this.authKey})

默认标头值（即 Content-Type : application/json）将替换为上述标头。

在此处输入图像描述 我没有替换标题我该如何添加custom headers，而是这样尝试：

  public async AllCustomers(): Promise<ICustomer[]> {
    const apiUrl = `${this.baseUrl}/courses`;
    const headers = new HttpHeaders();
    headers.append('Authorization', this.authKey);
    headers.append('x-Flatten', 'true');
    headers.append('Content-Type', 'application/json');

    return this.http.get<ICustomer[]>(apiUrl).toPromise();
  }

我的方法有什么问题，我是新手angular，有什么帮助吗？

标签： javascriptnode.jsangulartypescriptrxjs

解决方案

You should add header to your get request like this. Also since HttpHeaders is immutable object you have to reassign header object

  public async AllCustomers(): Promise<ICourses[]> {
    const apiUrl = `${this.baseUrl}/courses`;
    let headers = new HttpHeaders();
    headers = headers.append('Authorization', this.authKey);
    headers = headers.append('x-Flatten', 'true');
    headers = headers.append('Content-Type', 'application/json');

    return this.http.get<ICourses[]>(apiUrl, {headers}).toPromise();
  }

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