Reactjs JWT Authentication Example

https://loizenai.com/reactjs-jwt-authentication-example/

Reactjs JWT Authentication Example

Tutorial: Reactjs JWT Token Authentication 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 the tutorial, I introduce how to implement an application “Reactjs JWT token Authentication Example” with details step by step and 100% running sourcecode.

– I give you an Epic of the application, a fullstack excutive flow from frontend to backend with overall architecture diagram.
– I give you a layer diagram of Reactjs JWT Application.
– I give you an implementatin of security backend sourcecode (SpringBoot + Nodejs JWT RestAPIs).
– I guide you step by step how to develop a Reactjs JWT Authentication application.
– Finally, I do an integrative testing from Reactjs JWT Authentication application to Backend Security RestAPIs

Overall Epic System Architecture Diagram

For the Reactjs JWT Authentication tutorial, we have 2 projects:
– Backend project (using SpringBoot or Nodejs Express) provides secured RestAPIs with JWT token.
– Reactjs project will request RestAPIs from Backend system with the JWT Token Authentication implementation.

JWT Authentication Sequence Diagram

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

1. User Registration Phase:
   – User uses a React.js register form to post user’s info (name, username, email, role, password) to Backend API /api/auth/signup.
   – Backend will check the existing users in database and save user’s signup info to database. Finally, It will return a message (successfully or fail) to

2. User Login Phase:
   – User posts user/password to signin to Backend RestAPI /api/auth/signin.
   – Backend will check the username/password, if it is right, Backend will create and JWT string with secret then return it to Reactjs client.

After signin, user can request secured resources from backend server by adding the JWT token in Authorization Header. For each request, backend will check the JWT signature and then returns back the resources based on user’s registered authorities.

Reactjs JWT Authentication Layer Diagram Overview

Reactjs JWT Authentication would be built with 5 main kind blocks:

• Reactjs Router is a standard library for routing in React. It enables the navigation among views of various components in a React Application, allows changing the browser URL, and keeps the UI in sync with the URL.
• Reactjs Components let you split the UI into independent, reusable pieces, and think about each piece in isolation.
• Reactjs Service is a bridge between Reactjs Component and Backend Server, it is used to do technical logic with Backend Server (using Ajax Engine to fetch data from Backend, or using Local Storage to save user login data) and returned a response data to React.js Components
• Local Storage allow to save key/value pairs in a web browser. It is a place to save the login user’s info.
• Axios – (an Ajax Engine) is a promise-based HTTP client for the browser and Node. js. Axios makes it easy to send asynchronous HTTP requests to REST endpoints and perform CRUD operations.

Project Goal

We create a Reactjs JWT Authentication project as below:

It includes 8 components and 2 services and a router in app.js file.

– Home page:

– User Register page:

– Login Page:

– Profile Page:

– Use Page:

– Project Manager Page:

– Reactjs Admin page:

Related posts

How to Integrate Reactjs with Nodejs Tutorial
Tutorial: SpringBoot + React + MongoDB – SpringBoot React.js CRUD Example
Angular 10 + Nodejs JWT Token Based Authentication with MySQL Example – Express RestAPIs + JWT + BCryptjs + Sequelize

#reactjs #jwt #authentication #example

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TS-mockito: Mocking Library for TypeScript

TS-mockito

Mocking library for TypeScript inspired by http://mockito.org/

1.x to 2.x migration guide

1.x to 2.x migration guide

Main features

• Strongly typed
• IDE autocomplete
• Mock creation (mock) (also abstract classes) #example
• Spying on real objects (spy) #example
• Changing mock behavior (when) via:
  • thenReturn - return value #example
  • thenThrow - throw an error #example
  • thenCall - call custom method #example
  • thenResolve - resolve promise #example
  • thenReject - rejects promise #example
• Checking if methods were called with given arguments (verify)
  • anything, notNull, anyString, anyOfClass etc. - for more flexible comparision
  • once, twice, times, atLeast etc. - allows call count verification #example
  • calledBefore, calledAfter - allows call order verification #example
• Resetting mock (reset, resetCalls) #example, #example
• Capturing arguments passed to method (capture) #example
• Recording multiple behaviors #example
• Readable error messages (ex. 'Expected "convertNumberToString(strictEqual(3))" to be called 2 time(s). But has been called 1 time(s).')

Installation

npm install ts-mockito --save-dev

Usage

Basics

// Creating mock
let mockedFoo:Foo = mock(Foo);

// Getting instance from mock
let foo:Foo = instance(mockedFoo);

// Using instance in source code
foo.getBar(3);
foo.getBar(5);

// Explicit, readable verification
verify(mockedFoo.getBar(3)).called();
verify(mockedFoo.getBar(anything())).called();

Stubbing method calls

// Creating mock
let mockedFoo:Foo = mock(Foo);

// stub method before execution
when(mockedFoo.getBar(3)).thenReturn('three');

// Getting instance
let foo:Foo = instance(mockedFoo);

// prints three
console.log(foo.getBar(3));

// prints null, because "getBar(999)" was not stubbed
console.log(foo.getBar(999));

Stubbing getter value

// Creating mock
let mockedFoo:Foo = mock(Foo);

// stub getter before execution
when(mockedFoo.sampleGetter).thenReturn('three');

// Getting instance
let foo:Foo = instance(mockedFoo);

// prints three
console.log(foo.sampleGetter);

Stubbing property values that have no getters

Syntax is the same as with getter values.

Please note, that stubbing properties that don't have getters only works if Proxy object is available (ES6).

Call count verification

// Creating mock
let mockedFoo:Foo = mock(Foo);

// Getting instance
let foo:Foo = instance(mockedFoo);

// Some calls
foo.getBar(1);
foo.getBar(2);
foo.getBar(2);
foo.getBar(3);

// Call count verification
verify(mockedFoo.getBar(1)).once();               // was called with arg === 1 only once
verify(mockedFoo.getBar(2)).twice();              // was called with arg === 2 exactly two times
verify(mockedFoo.getBar(between(2, 3))).thrice(); // was called with arg between 2-3 exactly three times
verify(mockedFoo.getBar(anyNumber()).times(4);    // was called with any number arg exactly four times
verify(mockedFoo.getBar(2)).atLeast(2);           // was called with arg === 2 min two times
verify(mockedFoo.getBar(anything())).atMost(4);   // was called with any argument max four times
verify(mockedFoo.getBar(4)).never();              // was never called with arg === 4

Call order verification

// Creating mock
let mockedFoo:Foo = mock(Foo);
let mockedBar:Bar = mock(Bar);

// Getting instance
let foo:Foo = instance(mockedFoo);
let bar:Bar = instance(mockedBar);

// Some calls
foo.getBar(1);
bar.getFoo(2);

// Call order verification
verify(mockedFoo.getBar(1)).calledBefore(mockedBar.getFoo(2));    // foo.getBar(1) has been called before bar.getFoo(2)
verify(mockedBar.getFoo(2)).calledAfter(mockedFoo.getBar(1));    // bar.getFoo(2) has been called before foo.getBar(1)
verify(mockedFoo.getBar(1)).calledBefore(mockedBar.getFoo(999999));    // throws error (mockedBar.getFoo(999999) has never been called)

Throwing errors

let mockedFoo:Foo = mock(Foo);

when(mockedFoo.getBar(10)).thenThrow(new Error('fatal error'));

let foo:Foo = instance(mockedFoo);
try {
    foo.getBar(10);
} catch (error:Error) {
    console.log(error.message); // 'fatal error'
}

Custom function

You can also stub method with your own implementation

let mockedFoo:Foo = mock(Foo);
let foo:Foo = instance(mockedFoo);

when(mockedFoo.sumTwoNumbers(anyNumber(), anyNumber())).thenCall((arg1:number, arg2:number) => {
    return arg1 * arg2; 
});

// prints '50' because we've changed sum method implementation to multiply!
console.log(foo.sumTwoNumbers(5, 10));

Resolving / rejecting promises

You can also stub method to resolve / reject promise

let mockedFoo:Foo = mock(Foo);

when(mockedFoo.fetchData("a")).thenResolve({id: "a", value: "Hello world"});
when(mockedFoo.fetchData("b")).thenReject(new Error("b does not exist"));

Resetting mock calls

You can reset just mock call counter

// Creating mock
let mockedFoo:Foo = mock(Foo);

// Getting instance
let foo:Foo = instance(mockedFoo);

// Some calls
foo.getBar(1);
foo.getBar(1);
verify(mockedFoo.getBar(1)).twice();      // getBar with arg "1" has been called twice

// Reset mock
resetCalls(mockedFoo);

// Call count verification
verify(mockedFoo.getBar(1)).never();      // has never been called after reset

You can also reset calls of multiple mocks at once resetCalls(firstMock, secondMock, thirdMock)

Resetting mock

Or reset mock call counter with all stubs

// Creating mock
let mockedFoo:Foo = mock(Foo);
when(mockedFoo.getBar(1)).thenReturn("one").

// Getting instance
let foo:Foo = instance(mockedFoo);

// Some calls
console.log(foo.getBar(1));               // "one" - as defined in stub
console.log(foo.getBar(1));               // "one" - as defined in stub
verify(mockedFoo.getBar(1)).twice();      // getBar with arg "1" has been called twice

// Reset mock
reset(mockedFoo);

// Call count verification
verify(mockedFoo.getBar(1)).never();      // has never been called after reset
console.log(foo.getBar(1));               // null - previously added stub has been removed

You can also reset multiple mocks at once reset(firstMock, secondMock, thirdMock)

Capturing method arguments

let mockedFoo:Foo = mock(Foo);
let foo:Foo = instance(mockedFoo);

// Call method
foo.sumTwoNumbers(1, 2);

// Check first arg captor values
const [firstArg, secondArg] = capture(mockedFoo.sumTwoNumbers).last();
console.log(firstArg);    // prints 1
console.log(secondArg);    // prints 2

You can also get other calls using first(), second(), byCallIndex(3) and more...

Recording multiple behaviors

You can set multiple returning values for same matching values

const mockedFoo:Foo = mock(Foo);

when(mockedFoo.getBar(anyNumber())).thenReturn('one').thenReturn('two').thenReturn('three');

const foo:Foo = instance(mockedFoo);

console.log(foo.getBar(1));    // one
console.log(foo.getBar(1));    // two
console.log(foo.getBar(1));    // three
console.log(foo.getBar(1));    // three - last defined behavior will be repeated infinitely

Another example with specific values

let mockedFoo:Foo = mock(Foo);

when(mockedFoo.getBar(1)).thenReturn('one').thenReturn('another one');
when(mockedFoo.getBar(2)).thenReturn('two');

let foo:Foo = instance(mockedFoo);

console.log(foo.getBar(1));    // one
console.log(foo.getBar(2));    // two
console.log(foo.getBar(1));    // another one
console.log(foo.getBar(1));    // another one - this is last defined behavior for arg '1' so it will be repeated
console.log(foo.getBar(2));    // two
console.log(foo.getBar(2));    // two - this is last defined behavior for arg '2' so it will be repeated

Short notation:

const mockedFoo:Foo = mock(Foo);

// You can specify return values as multiple thenReturn args
when(mockedFoo.getBar(anyNumber())).thenReturn('one', 'two', 'three');

const foo:Foo = instance(mockedFoo);

console.log(foo.getBar(1));    // one
console.log(foo.getBar(1));    // two
console.log(foo.getBar(1));    // three
console.log(foo.getBar(1));    // three - last defined behavior will be repeated infinity

Possible errors:

const mockedFoo:Foo = mock(Foo);

// When multiple matchers, matches same result:
when(mockedFoo.getBar(anyNumber())).thenReturn('one');
when(mockedFoo.getBar(3)).thenReturn('one');

const foo:Foo = instance(mockedFoo);
foo.getBar(3); // MultipleMatchersMatchSameStubError will be thrown, two matchers match same method call

Mocking interfaces

You can mock interfaces too, just instead of passing type to mock function, set mock function generic type Mocking interfaces requires Proxy implementation

let mockedFoo:Foo = mock<FooInterface>(); // instead of mock(FooInterface)
const foo: SampleGeneric<FooInterface> = instance(mockedFoo);

Mocking types

You can mock abstract classes

const mockedFoo: SampleAbstractClass = mock(SampleAbstractClass);
const foo: SampleAbstractClass = instance(mockedFoo);

You can also mock generic classes, but note that generic type is just needed by mock type definition

const mockedFoo: SampleGeneric<SampleInterface> = mock(SampleGeneric);
const foo: SampleGeneric<SampleInterface> = instance(mockedFoo);

Spying on real objects

You can partially mock an existing instance:

const foo: Foo = new Foo();
const spiedFoo = spy(foo);

when(spiedFoo.getBar(3)).thenReturn('one');

console.log(foo.getBar(3)); // 'one'
console.log(foo.getBaz()); // call to a real method

You can spy on plain objects too:

const foo = { bar: () => 42 };
const spiedFoo = spy(foo);

foo.bar();

console.log(capture(spiedFoo.bar).last()); // [42] 

Thanks

• Szczepan Faber (https://www.linkedin.com/in/szczepiq)
• Sebastian Konkol (https://www.linkedin.com/in/sebastiankonkol)
• Clickmeeting (http://clickmeeting.com)
• Michał Stocki (https://github.com/michalstocki)
• Łukasz Bendykowski (https://github.com/viman)
• Andrey Ermakov (https://github.com/dreef3)
• Markus Ende (https://github.com/Markus-Ende)
• Thomas Hilzendegen (https://github.com/thomashilzendegen)
• Johan Blumenberg (https://github.com/johanblumenberg)

---

Download Details:

Author: NagRock
Source Code: https://github.com/NagRock/ts-mockito 
License: MIT license

#typescript #testing #mock 

Reactjs JWT Authentication Example

https://loizenai.com/reactjs-jwt-authentication-example/

Reactjs JWT Authentication Example

Tutorial: Reactjs JWT Token Authentication 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 the tutorial, I introduce how to implement an application “Reactjs JWT token Authentication Example” with details step by step and 100% running sourcecode.

– I give you an Epic of the application, a fullstack excutive flow from frontend to backend with overall architecture diagram.
– I give you a layer diagram of Reactjs JWT Application.
– I give you an implementatin of security backend sourcecode (SpringBoot + Nodejs JWT RestAPIs).
– I guide you step by step how to develop a Reactjs JWT Authentication application.
– Finally, I do an integrative testing from Reactjs JWT Authentication application to Backend Security RestAPIs

Overall Epic System Architecture Diagram

For the Reactjs JWT Authentication tutorial, we have 2 projects:
– Backend project (using SpringBoot or Nodejs Express) provides secured RestAPIs with JWT token.
– Reactjs project will request RestAPIs from Backend system with the JWT Token Authentication implementation.

JWT Authentication Sequence Diagram

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

1. User Registration Phase:
   – User uses a React.js register form to post user’s info (name, username, email, role, password) to Backend API /api/auth/signup.
   – Backend will check the existing users in database and save user’s signup info to database. Finally, It will return a message (successfully or fail) to

2. User Login Phase:
   – User posts user/password to signin to Backend RestAPI /api/auth/signin.
   – Backend will check the username/password, if it is right, Backend will create and JWT string with secret then return it to Reactjs client.

After signin, user can request secured resources from backend server by adding the JWT token in Authorization Header. For each request, backend will check the JWT signature and then returns back the resources based on user’s registered authorities.

Reactjs JWT Authentication Layer Diagram Overview

Reactjs JWT Authentication would be built with 5 main kind blocks:

• Reactjs Router is a standard library for routing in React. It enables the navigation among views of various components in a React Application, allows changing the browser URL, and keeps the UI in sync with the URL.
• Reactjs Components let you split the UI into independent, reusable pieces, and think about each piece in isolation.
• Reactjs Service is a bridge between Reactjs Component and Backend Server, it is used to do technical logic with Backend Server (using Ajax Engine to fetch data from Backend, or using Local Storage to save user login data) and returned a response data to React.js Components
• Local Storage allow to save key/value pairs in a web browser. It is a place to save the login user’s info.
• Axios – (an Ajax Engine) is a promise-based HTTP client for the browser and Node. js. Axios makes it easy to send asynchronous HTTP requests to REST endpoints and perform CRUD operations.

Project Goal

We create a Reactjs JWT Authentication project as below:

It includes 8 components and 2 services and a router in app.js file.

– Home page:

– User Register page:

– Login Page:

– Profile Page:

– Use Page:

– Project Manager Page:

– Reactjs Admin page:

Related posts

How to Integrate Reactjs with Nodejs Tutorial
Tutorial: SpringBoot + React + MongoDB – SpringBoot React.js CRUD Example
Angular 10 + Nodejs JWT Token Based Authentication with MySQL Example – Express RestAPIs + JWT + BCryptjs + Sequelize

#reactjs #jwt #authentication #example

Reactjs JWT Authentication Example

https://loizenai.com/reactjs-jwt-authentication-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 the tutorial, I introduce how to implement an application “Reactjs JWT token Authentication Example” with details step by step and 100% running sourcecode.

– I give you an Epic of the application, a fullstack excutive flow from frontend to backend with overall architecture diagram.
– I give you a layer diagram of Reactjs JWT Application.
– I give you an implementatin of security backend sourcecode (SpringBoot + Nodejs JWT RestAPIs).
– I guide you step by step how to develop a Reactjs JWT Authentication application.
– Finally, I do an integrative testing from Reactjs JWT Authentication application to Backend Security RestAPIs

Overall Epic System Architecture Diagram

For the Reactjs JWT Authentication tutorial, we have 2 projects:
– Backend project (using SpringBoot or Nodejs Express) provides secured RestAPIs with JWT token.
– Reactjs project will request RestAPIs from Backend system with the JWT Token Authentication implementation.

JWT Authentication Sequence Diagram

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

1. User Registration Phase:
   – User uses a React.js register form to post user’s info (name, username, email, role, password) to Backend API /api/auth/signup.
   – Backend will check the existing users in database and save user’s signup info to database. Finally, It will return a message (successfully or fail) to

2. User Login Phase:
   – User posts user/password to signin to Backend RestAPI /api/auth/signin.
   – Backend will check the username/password, if it is right, Backend will create and JWT string with secret then return it to Reactjs client.

After signin, user can request secured resources from backend server by adding the JWT token in Authorization Header. For each request, backend will check the JWT signature and then returns back the resources based on user’s registered authorities.

Reactjs JWT Authentication Layer Diagram Overview

Reactjs JWT Authentication would be built with 5 main kind blocks:

• Reactjs Router is a standard library for routing in React. It enables the navigation among views of various components in a React Application, allows changing the browser URL, and keeps the UI in sync with the URL.
• Reactjs Components let you split the UI into independent, reusable pieces, and think about each piece in isolation.
• Reactjs Service is a bridge between Reactjs Component and Backend Server, it is used to do technical logic with Backend Server (using Ajax Engine to fetch data from Backend, or using Local Storage to save user login data) and returned a response data to React.js Components
• Local Storage allow to save key/value pairs in a web browser. It is a place to save the login user’s info.
• Axios – (an Ajax Engine) is a promise-based HTTP client for the browser and Node. js. Axios makes it easy to send asynchronous HTTP requests to REST endpoints and perform CRUD operations.

Project Goal

We create a Reactjs JWT Authentication project as below:

It includes 8 components and 2 services and a router in app.js file.

– Home page:

– User Register page:

– Login Page:

• Profile Page:

– Use Page:

– Project Manager Page:

– Reactjs Admin page:

Related posts:

• How to Integrate Reactjs with SpringBoot Tutorial
• Reactjs Nodejs MongoDB CRUD Example – MERN Stack Application
• SpringBoot + React + PostgreSQL: SpringBoot React.js CRUD Example

#reactjs #jwt #authentication #example

Reactjs JWT Authentication Example - loizenai.com

https://loizenai.com/reactjs-jwt-authentication-example/
https://www.youtube.com/watch?v=dTR-41_jMvc&t=4s
https://www.youtube.com/watch?v=y-i52oP-l_E&t=21s

Reactjs JWT Authentication Example

Tutorial: Reactjs JWT Token Authentication 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 the tutorial, I introduce how to implement an application “Reactjs JWT token Authentication Example” with details step by step and 100% running sourcecode.

– I give you an Epic of the application, a fullstack excutive flow from frontend to backend with overall architecture diagram.
– I give you a layer diagram of Reactjs JWT Application.
– I give you an implementatin of security backend sourcecode (SpringBoot + Nodejs JWT RestAPIs).
– I guide you step by step how to develop a Reactjs JWT Authentication application.
– Finally, I do an integrative testing from Reactjs JWT Authentication application to Backend Security RestAPIs

Overall Epic System Architecture Diagram

For the Reactjs JWT Authentication tutorial, we have 2 projects:
– Backend project (using SpringBoot or Nodejs Express) provides secured RestAPIs with JWT token.
– Reactjs project will request RestAPIs from Backend system with the JWT Token Authentication implementation.

JWT Authentication Sequence Diagram

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

1. User Registration Phase:
   – User uses a React.js register form to post user’s info (name, username, email, role, password) to Backend API /api/auth/signup.
   – Backend will check the existing users in database and save user’s signup info to database. Finally, It will return a message (successfully or fail) to

2. User Login Phase:
   – User posts user/password to signin to Backend RestAPI /api/auth/signin.
   – Backend will check the username/password, if it is right, Backend will create and JWT string with secret then return it to Reactjs client.

After signin, user can request secured resources from backend server by adding the JWT token in Authorization Header. For each request, backend will check the JWT signature and then returns back the resources based on user’s registered authorities.

Reactjs JWT Authentication Layer Diagram Overview

Reactjs JWT Authentication would be built with 5 main kind blocks:

• Reactjs Router is a standard library for routing in React. It enables the navigation among views of various components in a React Application, allows changing the browser URL, and keeps the UI in sync with the URL.
• Reactjs Components let you split the UI into independent, reusable pieces, and think about each piece in isolation.
• Reactjs Service is a bridge between Reactjs Component and Backend Server, it is used to do technical logic with Backend Server (using Ajax Engine to fetch data from Backend, or using Local Storage to save user login data) and returned a response data to React.js Components
• Local Storage allow to save key/value pairs in a web browser. It is a place to save the login user’s info.
• Axios – (an Ajax Engine) is a promise-based HTTP client for the browser and Node. js. Axios makes it easy to send asynchronous HTTP requests to REST endpoints and perform CRUD operations.

Project Goal

We create a Reactjs JWT Authentication project as below:

It includes 8 components and 2 services and a router in app.js file.

– Home page:

– User Register page:

– Login Page:

– Profile Page:

– Use Page:

– Project Manager Page:

– Reactjs Admin page:

Related posts

How to Integrate Reactjs with Nodejs Tutorial
Tutorial: SpringBoot + React + MongoDB – SpringBoot React.js CRUD Example
Angular 10 + Nodejs JWT Token Based Authentication with MySQL Example – Express RestAPIs + JWT + BCryptjs + Sequelize

#reactjs #jwt #authentication #example

Angular 9 JWT Login Authentication Example - loizenai.com

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:

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

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

– 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:

– 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 Token Authentication
• SpringBoot JWT Token Secured Authentication

Tutorial Link

Angular 9 JWT Login Authentication Example

Related post

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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