Angular 15 HttpClient & Http Services Tutorial

By Hardik Savani December 30, 2022 Category : Angular

Hey Friends,

This article will give you an example of angular 15 httpclient get example. We will use angular 15 http service example. I’m going to show you about angular 15 httpclient post example. you'll learn angular 15 httpclient service example. Alright, let’s dive into the details.

Every App must important to send API requests to another server. we can use HTTP client requests and get data and store data information on our server. as especially when you are working with angular, vue, and react applications. you must have to learn how to run HTTP client requests with angular 15.

Here, I will give you a very simple example to get all data using API and storing data using API. we will use JSON placeholder API for testing now. so we don't require creating a new API for it.

So, let's see the below example step on step how to create an HTTP service and how to use it.

Step 1: Create New App

You can easily create your angular app using the below command:

ng new my-new-app

Step 2: Import HttpClientModule

In this step, we need to import HttpClientModule to the app.module.ts file. so let's import it as below:

src/app/app.module.ts

import { BrowserModule } from '@angular/platform-browser';

import { NgModule } from '@angular/core';

import { AppComponent } from './app.component';

import { HttpClientModule } from '@angular/common/http';

@NgModule({

declarations: [

AppComponent

],

imports: [

BrowserModule,

HttpClientModule

],

providers: [],

bootstrap: [AppComponent]

})

export class AppModule { }

Step 3: Create Service for API

Here, we need to create a service for HTTP client requests. we will create a service file and write the client HTTP request code. this service will use in our component file. So let's create a service and put the bellow code:

ng g s services/post

Now let's add code as like bellow:

src/app/services/post.service.ts

import { Injectable } from '@angular/core';

import { HttpClient } from '@angular/common/http';

@Injectable({

providedIn: 'root'

})

export class PostService {

private url = 'http://jsonplaceholder.typicode.com/posts';

constructor(private httpClient: HttpClient) { }

getPosts(){

return this.httpClient.get(this.url);

}

}

Step 4: Use Service to Component

Now we have to use these services for our app component. So let's updated the code as bellow:

src/app/app.component.ts

import { Component, OnInit } from '@angular/core';

import { PostService } from './services/post.service';

@Component({

selector: 'app-root',

templateUrl: './app.component.html',

styleUrls: ['./app.component.css']

})

export class AppComponent implements OnInit {

posts:any;

constructor(private service:PostService) {}

ngOnInit() {

this.service.getPosts()

.subscribe(response => {

this.posts = response;

});

}

}

Step 5: Updated View File

Now here, we will update our HTML file. let's put the bellow code:

src/app/app.component.html

<h1>Angular 15 HttpClient for Sending Http Request Example - ItSolutionStuff.com</h1>

<ul class="list-group">

<li

*ngFor="let post of posts"

class="list-group-item">

{{ post.title }}

</li>

</ul>

Run Angular App:

All the required steps have been done, now you have to type the given below command and hit enter to run the Angular app:

ng serve

Now, Go to your web browser, type the given URL and view the app output:

http://localhost:4200

you will see the layout below:

I hope it can help you...