[LayaAir3]Laya3.0.13 HTTP请求跨域，如何解决

    hr: Laya.HttpRequest;

    http(): void {

        //请求

        this.hr = new Laya.HttpRequest();

		this.hr.once(Laya.Event.PROGRESS, this, this.onHttpRequestProgress);

		this.hr.once(Laya.Event.COMPLETE, this, this.onHttpRequestComplete);

		this.hr.once(Laya.Event.ERROR, this, this.onHttpRequestError);

		this.hr.send('http://localhost:8899/data', null, 'post', 'json',["Content-Type", "application/json"]);

    }



    private onHttpRequestError(e: any = null): void {

		console.log(e);

	}



	private onHttpRequestProgress(e: any = null): void {

		console.log(e)

	}



	private onHttpRequestComplete(e: any = null): void {

		//this.logger.text += "收到数据：" + this.hr.data;

        console.log("收到数据");

        console.log(this.hr.data);

	}