如果你可以依赖 sweetalert2 ，对话服务变得非常简单：

If you're ok taking a dependency on sweetalert2, a dialog service becomes pretty simple:

import { Injectable } from '@angular/core';
import { default as swal } from 'sweetalert2';

@Injectable()
export class DialogService {
    confirm(title: string, message: string) {
        return swal({
            title: title,
            text: message,
            type: 'warning',
            showCancelButton: true
        });
    };
}