用于参考使用路由复用策略创建标签保留页面内容，并使用了queryParams传递参数。
-- 注：这个例子适用于没有子路由的情况。--
This project was generated with Angular CLI version 7.0.2.
Run ng serve for a dev server. Navigate to http://localhost:4200/. The app will automatically reload if you change any of the source files.
Run ng generate component component-name to generate a new component. You can also use ng generate directive|pipe|service|class|guard|interface|enum|module.
Run ng build to build the project. The build artifacts will be stored in the dist/ directory. Use the --prod flag for a production build.