面试题：Angular中HttpClient模块如何设置简单请求头

Question

在Angular应用中，使用HttpClient模块发送一个GET请求，要求在请求头中设置自定义的 'Authorization' 字段，值为 'Bearer token123'，请写出相关代码。

Answer 1

import { Component } from '@angular/core';
import { HttpClient } from '@angular/common/http';

@Component({
  selector: 'app-example',
  templateUrl: './example.component.html'
})
export class ExampleComponent {
  constructor(private http: HttpClient) {}

  sendGetRequest() {
    const headers = {
      'Authorization': 'Bearer token123'
    };
    return this.http.get('your-api-url', { headers });
  }
}