Angularhttpclient发起的请求在Chrome开发者工具network标签页里观察到的界面

源代码&＃xff1a;

import { Injectable } from &＃39;&＃64;angular/core&＃39;;
import {HttpClient} from &＃39;&＃64;angular/common/http&＃39;;&＃64;Injectable()
export class BookManageService {private API_PATH &＃61; &＃39;https://www.googleapis.com/books/v1/volumes&＃39;;constructor(private http: HttpClient) { }searchBooks(queryTitle: string) {return this.http.get(&＃96;${this.API_PATH}?q&＃61;${queryTitle}&＃96;);}
}