我正在嘗試鏈接 3 個(gè)文件 Angular 組件、Plain JS 類和 Angular 服務(wù)：我的角度組件（AppComponent）應(yīng)該初始化我的普通 js 類（CommonCode）...但是，我的普通 js 類需要調(diào)用和角度服務(wù)。成分：@Component({  selector: 'my-app',  templateUrl: './app.component.html',  styleUrls: [ './app.component.css' ]})export class AppComponent  {  ngOnInit() {  }}服務(wù)：import { AnotherAngularService } from '/core/service2';import { AnotherAnotherAngularService } from '/core/service3';@Injectable({  providedIn: 'root',})export class Foo2Service {    this.serviceOneCache = null;    // Service code    constructor(public anotherAngularService:AnotherAngularService, public anotherAnotherAngularService:AnotherAnotherAngularService) {        this.anotherAngularService.getCache().subscribe(response) {                this.serviceOneCache = response;            }            .error();            }    init() {      // Code that returns something      return 'test';    }    getFooCache() {        return this.http.get...... etc etc    }}JS類import { FooService } from '/core/fooservice';export class CommonCode  {    this.fooCache = null;    // Service code    constructor(public fooService: FooService) {        this.fooService.getFooCache().subscribe(response) {                this.fooCache = response;            }            .error();            }    func1() {    }}