如何兑现承诺并避免重复答复？

Question

我有一个execute方法，该方法创建请求并调用每个url以获取响应，并使用promise.all将其组合起来，以下代码的问题是它复制了两个响应并将其两次添加到combineResponses ，有人可以在这里提供帮助吗？解决问题的更好方法或将promise.all与响应结合起来的方法？

main.ts

export class GetAccountBalanceController extends Controller {

    private _request: IRequestURL[] = [];
    constructor() {
        super();
    }
    private async execute(@Request() request: ExpressRequest): Promise < any > {
        const combinedResponses: IResponse[] = [];
        if (request.body.includeSpecialty === true) {
            const bRetSpecialty = await this.specialtyBalanceRequest(request);
            this._request.push(bRetSpecialty);
            try {
                const specialtyResponse: IResponse = await makeRequest(this._request);
                combinedResponses.push(specialtyResponse);
            } catch (err) {
                return Promise.reject(err);
            }
        }
        if (request.body.getAccountBalanceRequest) {
            const bRetPBM = await this.pmbBalanceRequest(request);
            this._request.push(bRetPBM);
            try {
                const pbmResponse: IResponse = await makeRequest(this._request);
                combinedResponses.push(pbmResponse);
            } catch (err) {
                return Promise.reject(err);
            }
        }
        return await Promise.all(combinedResponses);

    }
}

在工作时另一个想法是

  private async execute(@Request() request: ExpressRequest): Promise<any> {
        const combinedResponses: IResponse[] = [];
        if (request.body.includeSpecialty === true) {
            const bRetSpecialty = await this.specialtyBalanceRequest(request);
            this._request.push(bRetSpecialty);
        }
        if (request.body.getAccountBalanceRequest) {
            const bRetPBM = await this.pmbBalanceRequest(request);
            this._request.push(bRetPBM);
        }

        try {
            const _data: IResponse = await makeRequest(this._request);
            combinedResponses.push(_data);
        } catch (err) {
            return Promise.reject(err);
        }
        return await Promise.all(combinedResponses);

    }