Angular2 CustomReuseStrategy在使用参数布线时创建组件的新实例

import { RouteReuseStrategy, ActivatedRouteSnapshot, DetachedRouteHandle } from '@angular/router';

export class CustomReuseStrategy implements RouteReuseStrategy {
  shouldDetach(route: ActivatedRouteSnapshot): boolean {
    return false;
  }

  store(route: ActivatedRouteSnapshot, handle: DetachedRouteHandle): void {}

  shouldAttach(route: ActivatedRouteSnapshot): boolean {
    return false;
  }

  retrieve(route: ActivatedRouteSnapshot): DetachedRouteHandle | null {
    return null;
  }

  shouldReuseRoute(future: ActivatedRouteSnapshot, curr: ActivatedRouteSnapshot): boolean {
    // 在这里根据参数的变化来决定是否创建新的组件实例
    return future.routeConfig === curr.routeConfig;
  }
}

import { NgModule } from '@angular/core';
import { RouterModule, RouteReuseStrategy } from '@angular/router';
import { CustomReuseStrategy } from './custom-reuse-strategy';

@NgModule({
  imports: [
    RouterModule.forRoot([
      { path: 'example', component: ExampleComponent }
    ])
  ],
  providers: [
    { provide: RouteReuseStrategy, useClass: CustomReuseStrategy }
  ]
})
export class AppRoutingModule { }