Create Custom Login Form in Angular for Spring Security Basic HTTP Authentication Mechanism

In this article, we will discuss how to create a custom login form in Angular for Spring Security using the Basic HTTP Authentication Mechanism. This authentication mechanism allows users to authenticate themselves using a username and password.

Creating the Angular Login Form

First, we need to create the login form in our Angular application. We can do this by creating a new component for the login form.

    
      // login.component.html

      <form (ngSubmit)="login()">
        <div>
          <label for="username">Username:</label>
          <input type="text" id="username" name="username" [(ngModel)]="username" required>
        </div>
        <div>
          <label for="password">Password:</label>
          <input type="password" id="password" name="password" [(ngModel)]="password" required>
        </div>
        <button type="submit">Login</button>
      </form>
    
  

Now that we have the login form set up, we can create the corresponding component in our Angular application and implement the login function to handle the form submission.

Handling the Login Function

Next, we need to define the login function in our login component to handle the form submission. In this function, we will use Angular’s HttpClient to make a POST request to our Spring Security backend with the user’s credentials.

    
      // login.component.ts

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

      @Component({
        selector: 'app-login',
        templateUrl: './login.component.html',
        styleUrls: ['./login.component.css']
      })
      export class LoginComponent {
        username: string;
        password: string;
      
        constructor(private http: HttpClient) {}
      
        login() {
          this.http.post('/login', { username: this.username, password: this.password }).subscribe((response) => {
            // handle successful login
          }, (error) => {
            // handle failed login
          });
        }
      }
    
  

Configuring Spring Security

Lastly, we need to configure Spring Security to handle the Basic HTTP Authentication Mechanism. We can do this by defining a new security configuration class and specifying the authentication type as basic authentication.

    
      // SecurityConfig.java

      @Configuration
      @EnableWebSecurity
      public class SecurityConfig extends WebSecurityConfigurerAdapter {
      
        @Override
        protected void configure(HttpSecurity http) throws Exception {
          http
            .authorizeRequests()
              .anyRequest().authenticated()
            .and()
            .httpBasic();
        }
      }
    
  

With the login form in place, the login function handling form submission, and Spring Security configured for Basic HTTP Authentication, we have successfully created a custom login form in Angular for Spring Security.

By following the steps outlined in this article, you can implement a secure login mechanism in your Angular application with Spring Security’s Basic HTTP Authentication.