获取路线查询参数

问题描述

我正在尝试从rc1迁移到rc4，但是我无法获取查询字符串参数. ActivatedRoute对象始终为空.

I am trying to migrate from rc1 to rc4 and i have trouble getting query string parameters. ActivatedRoute object always empty.

hero.component.ts

import {Component, OnInit} from "@angular/core";
import {Control} from "@angular/common";
import {ROUTER_DIRECTIVES, ActivatedRoute} from '@angular/router';

@Component({
    template: '../partials/main.html',
    directives: [ROUTER_DIRECTIVES]
})

export class HeroComponent implements OnInit {

    constructor(private _activatedRoute: activatedRoute) {

    }

    ngOnInit() {
        this._activatedRoute.params.subscribe(params => {
            console.log(params);
        });
    }
}

main.ts

import {bootstrap} from '@angular/platform-browser-dynamic';
import {HTTP_PROVIDERS, RequestOptions, Http} from '@angular/http';
import {AppRouterProviders} from './app.routes';

bootstrap(AppComponent, [
    AppRouterProviders,
    HTTP_PROVIDERS
]);

app.component.ts

import {Component, OnInit} from '@angular/core';
import {HeroComponent} from './hero.component';
import {RouteConfig, Router, ROUTER_DIRECTIVES} from '@angular/router';


@Component({
    selector: 'my-app',
    templateUrl: '../partials/main.html',
    directives: [
        HeroComponent,
        ROUTER_DIRECTIVES
    ]
})

export class AppComponent {
}

partials/main.html

<a class="nav-link" [routerLink]="['/']" [queryParams]="{st: 'new'}">New</a>

app.routes.ts

import {provideRouter, RouterConfig}  from '@angular/router';
import {HeroComponent} from './hero.component';
import {ErrorComponent} from './error.component';

const routes: RouterConfig = [
    {path:'', component: HeroComponent},
    {path:'**', component: ErrorComponent}
];

export const AppRouterProviders = [
    provideRouter(routes)
];

当我单击链接时，新建"控制台将打印出空对象

When i click on link 'New' console prints out empty object

已更新

朋克车

推荐答案

更新(最终版本2.0.0)

(somepath/:someparam/someotherpath)，您可以使用_router.queryParams.subscribe(...)订阅它们:

(somepath/:someparam/someotherpath) you can subscribe to them using _router.queryParams.subscribe(...):

export class HeroComponent implements OnInit {
  constructor(private _activatedRoute: ActivatedRoute, private _router:Router) {
    _activatedRoute.queryParams.subscribe(
      params => console.log('queryParams', params['st']));

原始

如果要使用queryParams代替路由参数(somepath/:someparam/someotherpath)，则可以使用_router.routerState.queryParams.subscribe(...)订阅它们:

If you want queryParams instead of route params (somepath/:someparam/someotherpath) you can subscribe to them using _router.routerState.queryParams.subscribe(...):

export class HeroComponent implements OnInit {
  constructor(private _activatedRoute: ActivatedRoute, private _router:Router) {
    _router.routerState.queryParams.subscribe(
      params => console.log('queryParams', params['st']));

柱塞示例

这篇关于获取路线查询参数的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！