在多个Navigation组件的情况下，如何进行路由管理

export class RouterModule {
建立NavPathStack的路由栈表，key是路由栈名，value是对应的路由栈对象
  static routerMap: Map<string, NavPathStack> = new Map<string, NavPathStack>();

通过名称注册路由栈
  public static createRouter(routerName: string, router: NavPathStack): void {
    RouterModule.routerMap.set(routerName, router);
  }

通过名称获取路由栈
  public static getRouter(routerName: string): NavPathStack {
    return RouterModule.routerMap.get(routerName)as NavPathStack;
  }

通过传入RouterModule跳转到指定页面组件，RouterModule中需要增加routerName字段用于获取路由栈
  public static async push(router: RouterModel): Promise<void> {
    const harName = router.builderName.split('_')[0];
    let ns: ESObject = await import(harName);
    ns.harInit(router.builderName);
    // 
    RouterModule.getRouter(router.routerName).pushPath({ name: router.builderName, param: router.param });
  }
}
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