这个问题很可能是由于Angular在初始导航后无法处理URL参数导致的。解决此问题的方法是使用ServerTransferStateModule
来传递状态,从而使Angular Universal能够正确地处理带有参数的路由。
以下是一些示例代码: 在你的app.module.ts中添加以下代码:
import { BrowserModule, BrowserTransferStateModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { HttpClientModule } from '@angular/common/http';
import { AppRoutingModule } from './app-routing.module';
import { AppComponent } from './app.component';
import { TransferState } from '@angular/platform-browser';
@NgModule({
imports: [
BrowserModule.withServerTransition({ appId: 'ng-cli-universal' }),
FormsModule,
HttpClientModule,
AppRoutingModule,
BrowserTransferStateModule
],
declarations: [
AppComponent
],
providers: [
TransferState
],
bootstrap: [AppComponent]
})
export class AppModule { }
然后在你的组件中添加以下代码:
import { Component, OnInit, Inject, PLATFORM_ID } from '@angular/core';
import { isPlatformBrowser } from '@angular/common';
import { makeStateKey, TransferState } from '@angular/platform-browser';
import { ActivatedRoute } from '@angular/router';
const SOME_STATE_KEY = makeStateKey('some_state_key');
@Component({
selector: 'app-some-component',
templateUrl: './some-component.component.html',
styleUrls: ['./some-component.component.css']
})
export class SomeComponent implements OnInit {
someValue: string;
constructor(
private route: ActivatedRoute,
private transferState: TransferState,
@Inject(PLATFORM_ID) private platformId
) { }
ngOnInit() {
if (isPlatformBrowser(this.platformId)) {
// We are running on the client side, so get the state (if any) and clear it
const state = this.transferState.get(SOME_STATE_KEY, null);
this.transferState.set(SOME_STATE_KEY, null);
if (state !== null) {
this.someValue = state;