Angular 9 JWT Login Authentication Example - loizenai.com

Angular 9 JWT Login Authentication Example - loizenai.com

Angular 9 Login Authentication Example - Angular 9 + SpringBoot + MySQL/PostgreSQL JWT token AuthenticationJWT Role Based Authorization

Angular 9 JWT Login Authentication Example

Tutorial: Angular 9 Login Authentication Example – Angular 9 + SpringBoot + MySQL/PostgreSQL JWT token Authentication JWT Role Based Authorization with Spring Boot and Angular 9 (Spring Boot Login Example)

JSON Web Token (JWT) is an open standard (RFC 7519) that defines a compact and self-contained way for securely transmitting information between parties as a JSON object. So in tutorial ‘JWT Role Based Authorization with Spring Boot and Angular 9 (Spring Boot Login Example)’, I guide you very clearly how to implement full stack example to demonstrade an jwt token based authentication flow from frontend Angular 9 to backend: SpringBoot and MySQL.

– I give you an Epic of the application, a fullstack excutive flow from frontend – Angular 9 to backend – SpringBoot with overall architecture diagram. – I give you an architecture diagram of SpringBoot security backend. – I give you a working flow diagram of Angular 9 JWT Application. – I guide you step by step how to develop a Backend SpringBoot secured RestAPIs with JWT token. – I guide you step by step how to develop an Angular 9 JWT Token Authentication application. – Finally, I do an integrative testing from Angular 9 JWT Authentication application to SpringBoot Backend Security RestAPIs.

Angular Spring Boot JWT Authentication example

We will build an application, from frontend (Angular) to backend (Spring Boot), which allows users to register, login account. This application is secured with JWT (JSON Web Token) authentication and Spring Security. Then, depending on the role of current User (user, pm or admin), this system accepts what he can access:

Angular-9-Login-Form

Angular 9 Register Form

Angular 9 Home Page of a User with USER_ROLE

Angular 9 Content Page of a User with USER_ROLE

The diagram below show how our system handles User Registration and User Login processes:

Angular 9 Spring Boot Security Jwt Token Authentication Work Process Diagram

SPRING BOOT BACK-END WITH SPRING SECURITY

This is diagram for SpringBoot Token based authentication Security/JWT classes that are separated into 3 layers: – HTTP – Spring Security – REST API

Spring Boot Security Jwt Token Authentication Architecture Diagram Back End Server

– SecurityContextHolder provides access to the SecurityContext. – SecurityContext holds the Authentication and possibly request-specific security information. – Authentication represents the principal which includes GrantedAuthority that reflects the application-wide permissions granted to a principal. – UserDetails contains necessary information to build an Authentication object from DAOs or other source of security data. – UserDetailsService helps to create a UserDetails from a String-based username and is usually used by AuthenticationProvider. – JwtAuthTokenFilter (extends OncePerRequestFilter) pre-processes HTTP request, from Token, create Authentication and populate it to SecurityContext. – JwtProvider validates, parses token String or generates token String from UserDetails. – UsernamePasswordAuthenticationToken gets username/password from login Request and combines into an instance of Authentication interface. – AuthenticationManager uses DaoAuthenticationProvider (with help of UserDetailsService & PasswordEncoder) to validate instance of UsernamePasswordAuthenticationToken, then returns a fully populated Authentication instance on successful authentication. – SecurityContext is established by calling SecurityContextHolder.getContext().setAuthentication(…​) with returned authentication object above. – AuthenticationEntryPoint handles AuthenticationException. – Access to Restful API is protected by HTTPSecurity and authorized with Method Security Expressions.

ANGULAR FRONT-END WITH INTERCEPTOR

In the tutorial, “Angular 9 + Spring Boot JWT Token Based Authentication Example”, we need the Angular HTTP Interceptor to add JWT Token Based for Security authentication:

Angular 9 Jwt Token Workflow Diagram

– app.component is the parent component that contains routerLink and router-outlet for routing. It also has an authority variable as the condition for displaying items on navigation bar. – user.component, pm.component, admin.component correspond to Angular Components for User Board, PM Board, Admin Board. Each Board uses user.service to access authority data. – register.component contains User Registration form, submission of the form will call auth.service. – login.component contains User Login form, submission of the form will call auth.service and token-storage.service.

– user.service gets access to authority data from Server using Angular HttpClient ($http service). – auth.service handles authentication and signup actions with Server using Angular HttpClient ($http service). – every HTTP request by $http service will be inspected and transformed before being sent to the Server by auth-interceptor (implements HttpInterceptor). – auth-interceptor check and get Token from token-storage.service to add the Token to Authorization Header of the HTTP Requests.

– token-storage.service manages Token inside Browser’s sessionStorage.

Video Guide – Angular SpringBoot JWT Authentication

https://youtu.be/7ZfInOvFsz0

Sourcecode

Angular 9 JWT Login Authentication Example

Related post

  1. Angular CRUD Application with SpringBoot and MySQL/PostgreSQL RestAPIs
  2. Build SpringBoot CRUD Application – FullStack: Frontend (Bootstrap and Ajax) to Backend (SpringBoot and MySQL/PostgreSQL database)
  3. Angular Nodejs Fullstack CRUD Application with MySQL/PostgreSQL

angular jwt authentication token jwt-authentication example

Bootstrap 5 Complete Course with Examples

Bootstrap 5 Tutorial - Bootstrap 5 Crash Course for Beginners

Nest.JS Tutorial for Beginners

Hello Vue 3: A First Look at Vue 3 and the Composition API

Building a simple Applications with Vue 3

Deno Crash Course: Explore Deno and Create a full REST API with Deno

How to Build a Real-time Chat App with Deno and WebSockets

Convert HTML to Markdown Online

HTML entity encoder decoder Online

Angular 10 + Nodejs JWT Token Based Authentication with MySQL Example

“How to implement Angular 10 + Nodejs JWT Token Based Authentication with MySQL Example?” is always a big common question in development world? So in the tutorial, I guide you very clearly how to build a full stack example to demonstrate an JWT...

Angular 10 + Nodejs JWT Token Based Authentication with MySQL Example

How to implement: 'Angular 10 + Nodejs JWT Token Based Authentication MySQL Example' with Express RestAPIs, JWT + BCryptjs + Sequelize

Angular 10 + Nodejs JWT Token Based Authentication with MySQL Example

How to implement: 'Angular 10 + Nodejs JWT Token Based Authentication MySQL Example' with Express RestAPIs, JWT + BCryptjs + Sequelize

Youtube : Angular 10 Spring Boot Jwt Authentication Example

In the tutorial, I guide how to build an example "Angular Spring Boot JWT Authentication Example" with Angular 10 + Spring Security + MySQL

Angular Spring Boot jwt Authentication Example Github - loizenai.com

Tutorial: "Angular Spring Boot jwt Authentication Example Github - Angular Authentication and Authorization" with PostgreSQL/MySQL database