我想显示使用 service use angular 8 的用户列表
数据服务.service
import { Injectable } from '@angular/core';
import { Observable } from 'rxjs' ;
import { HttpClientModule } from '@angular/common/http';
import 'rxjs/add/operator/map';
@Injectable({
providedIn: 'root'})
export class DataServiceService {
constructor(public http:HttpClientModule) {}
getPersone(){
return this.http.get('https://jsonplaceholder.typicode.com/users').map(res=>res.json);
}
}
app.module.ts
import { BrowserModule } from '@angular/platform-browser';
import { NgModule } from '@angular/core';
import { FormsModule } from '@angular/Forms';
import {DataServiceService} from './services/data-service.service' ;
//import { HttpModule } from '@angular/Http';
import { HttpClientModule } from '@angular/common/http';
import { AppComponent } from './app.component';
import { NajibComponent } from './components/najib/najib.component';
import { EventsComponent } from './components/events/events.component';
import { CeventsComponent } from './components/cevents/cevents.component';
import { FormsComponent } from './components/forms/forms.component';
import { SComponentComponent } from './components/s-component/s-component.component';
import { from } from 'rxjs';
import { Server } from 'net';
@NgModule({
declarations: [
AppComponent,
NajibComponent,
EventsComponent,
CeventsComponent,
FormsComponent,
SComponentComponent
],
imports: [
BrowserModule,
FormsModule,
// HttpModule
HttpClientModule
],
providers: [],
bootstrap: [AppComponent]
})
export class AppModule { }
s-component.component.ts
import { Component, OnInit } from '@angular/core';
import { DataServiceService } from '../../services/data-service.service';
@Component({
selector: 'app-s-component',
templateUrl: './s-component.component.html',
styleUrls: ['./s-component.component.css']
})
export class SComponentComponent implements OnInit {
users:any[]=[];
constructor(public dataService:DataServiceService) {
this.dataService.getPersone().subscribe(users=>{
this.users=users;
});
}
ngOnInit() {
}
}
s-component.component.html
<div class="container">
<p>s-component works!</p>
<ul >
<li *ngFor="let item of users">
{{ item.id }}
</li>
</ul>
</div>
你需要使用 constructor(private http: HttpClient)
在您的DataServiceService
:
import { HttpClient } from '@angular/common/http';
并注入相同的constructor
.
你应该注入HttpClient
到你的服务不的HttpClientModule
你DataServiceService
。
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我来说两句