创建个服务 ng g service services/search 全局引入并配置服务 import {SearchService} from './services/search.service' providers: [SearchService], 在组件中,使用服务 import {SearchService} from '../../services/search.service' sname = '' constructor(public store: SearchService) { this.sname = this.store.systemName } <p>{{sname}}</p>