问如何使用路由获取:id参数到angular2的服务中

EN

<ul class="dropdown-menu scrollable-menu" role="menu">

      <li><a routerLink="mac/:id">3s-ds-23-sf-23-ce-33</a></li>
      <li><a routerLink="mac/:id">3s-ds-23-sf-23-ce-34</a></li>
      <li><a routerLink="mac/:id">3s-ds-23-sf-23-ce-35</a></li> 

</ul>

@Injectable()
export class TabuleService {

  //private headers = new Headers({'Content-Type': 'application/json'});
  private _Url = 'http://localhost:3000';  // URL to web api

  constructor(
     private _http: Http,
     private route: ActivatedRoute ) {}



getTemperature(): Observable<testing\[\]> {
    const url = this._Url+'/temperature';                    
    return this._http.get(url)
               .map(res =>{
                let data=res.json();
                let parsedData = \[\]; 
 // here i need to get parameter of mac from the routes to filter
                data.filter(function(el){ return el.mac=="3s-ds-23-sf-23-ce-35" }) 

                .forEach(function(item){ parsedData.push({ 
                          x:item.epoch_time_stamp, y:parseFloat(item.temp) });  });
                          //console.log(parsedData);
                return parsedData; })
               .catch(this.handleError);
               }