Angular中获取路由信息

constructor (
　　private router: Router,

) {this.urlChangeSubscriptions = router.events.subscribe((param) => {
      if (param instanceof NavigationEnd) {
        const urls = param.url.split('/');
        if (this.isDealsProject) {
          this.currentTab = urls[3] || '';
        } else {
          this.currentTab = urls[2] || '';
        }
      }
    });
}