DEV Community: ozenero.com

Reactjs Nodejs MongoDB CRUD Example – MERN Stack Application

ozenero.com — Sun, 03 Jan 2021 15:02:00 +0000

Reactjs Nodejs MongoDB CRUD Example – MERN Stack Application

Tutorial at: Reactjs Nodejs MongoDB CRUD Example

In the tutorial, I introduce how to build an “React.js Nodejs CRUD MongoDB Example” project with the help of Ajax to POST/GET/PUT/DELETE requests with step by step coding examples:

– Nodejs project produces CRUD RestAPIs with MongoDB database using the supporting of Mongoose ODM.
– React.js project will consume the Nodejs CRUD RestAPIs by Ajax then show up on Reactjs component’s views.

List to do - Reactjs Nodejs MongoDB CRUD Example:

– I draw a fullstack overview Diagram Architecture from React.js Frontend to MongoDB database through Nodejs RestAPI backend.
– Develop Nodejs CRUD RestAPIs with the supporting of Mongoose ODM.
– Implement Reactjs CRUD application with Ajax fetching APIs to do CRUD request (Post/Get/Put/Delete) to Nodejs Backend APIs.
– I create a testsuite with a number of integrative testcases with CRUD RestAPI requests from Reactjs to do CRUD requests to Nodejs RestAPIs Server and save/retrieve data to MongoDB database.

Overall Architecture System: Reactjs + Nodejs + MongoDB

We build a backend: Nodejs CRUD Application with MongoDB that provides RestAPIs for POST/GET/PUT/DELETE data entities and store them in MongoDB database.
We implement React.js CRUD Application that use Ajax to interact (call/receive requests) with Nodejs CRUD application and display corresponding data in Reactjs Component.

Nodejs MongoDB CRUD Design Application

We have 4 main blocks for the application:

For building RestAPIs in Nodejs application, we use Express framework.
For interacting with database MongoDB, we use Mongoose ODM.
We define APIs URL in router.js file
We implement how to process each API URL in controller.js file
We use Bootstrap and JQuery Ajax to implement frontend client.

Reactjs CRUD Application Design

React.js components let you split the UI into independent, reusable pieces, and think about each piece in isolation.
Ajax is used by Reactjs component to fetch (post/put/get/delete) data from remote restapi by http request

Reactjs CRUD Application defines 5 components:

Home.js is used serve as the landing page for your app.
AppNavbar.js is used to establish a common UI feature between components.
CustomerList.js is used to show all customers in the web-page
CustomerEdit.js is used to modify the existed customer
App.js uses React Router to navigate between components.

Integrative Project Goal

Tutorial: Reactjs Nodejs MongoDB CRUD Example

Youtube - Reactjs Nodejs MongoDB CRUD Example

https://www.youtube.com/watch?v=Tn4Dfztkvww&t=49s

Django Angular MySQL CRUD Example

ozenero.com — Sun, 03 Jan 2021 07:46:58 +0000

Django Angular MySQL CRUD Example

https://loizenai.com/django-angular-mysql-crud-example/

” Tutorial: Django Angular MySQL CRUD Example – Fullstack: Angular + Django Rest Framework + MySQL. ”

Django is a Python-based free and open-source web framework that follows the model-template-view architectural pattern. Angular is a TypeScript-based open-source web application framework led by the Angular Team at Google. In the tutorial, I introduce how to build a Angular Django CRUD RestAPIs Fullstack Project with POST/GET/PUT/DELETE requests using Django Rest Framework and MySQL database with step by step coding examples.

Architecture – Django Angular CRUD Example

Here is an overview of Architecture Design for Django Angular CRUD Example with Django Rest Framework and MySQL:

We build the backend Python Django Application that provides RestAPIs for POST/GET/PUT/DELETE Customer entities and store them in MySQL/PostgreSQL database.
We implement the Angular CRUD Application that uses Angular HTTPClient to interact (call/receive requests) with Django backend’s RestAPIs and display corresponding page views in Browser

Django RestAPIs CRUD MySQL Workflow – Django Angular MySQL CRUD Example

Django Application interacts with MySQL/PostgreSQL database via Model layers.
The Views are simply Python functions that take web requests and return web responses.
URLs are used to mapping each request with the corresponding views.

Django RestAPI CRUD Project Structure – Django Angular MySQL CRUD Example

The Django RestAPIs project includes 2 folders:

djangoLoiZenAiRestAPIs is a main project folder
customers is an application folder

Angular Frontend Architecture – Django Angular MySQL CRUD Example

Angular CRUD Application is designed with 3 main layers:

Service Layer is used to define Angular Common Services and HttpClient Services to interact with RestAPIs
Component Layer is used to define Angular Components to show views in Browser for interacting with Users
Router Layer is used to route URLs mapping with the corresponding Angular Components

Angular CRUD Project Structure – Django Angular MySQL CRUD Example

Angular CRUD Application defines 3 components, 2 services, 1 routers, and 2 data models:

– Components:

add-customer component is used to add a new customer to system
list-customer component is used to show all customers on view pages, delete a customer and update a customer
message component is used to define a view to show logging message on browser
– Services:

customer.service.ts defines POST/GET/PUT/DELETE HTTP requests to Django RestAPIs with the built-in Angular HttpClient.
message.service.ts defines an array storage to log all messages when Angular CRUD App running
– Router: app-routing.module.ts defines how to map a corresponding Angular component with an URL.

– Models:

customer.ts defines the main data model of our application.
message.ts defines the response data model between Django RestAPIs and Angular application.

Angular Django MySQL Example – Project Goal – Django Angular MySQL CRUD Example

Here is a list of goals for Angular Django CRUD Example with Django Rest Framework and MySQL database:

– Add a Customer Entities from Angular Client:

– List All Customer’s entities:

– Details a Customer:

– Update a Customer:

– Delete a Customer:

Tutorial

Angular Django MySQL CRUD EXampple

Youtube

Angular Client Side Pagination with Nodejs + MySQL

ozenero.com — Sun, 03 Jan 2021 07:42:09 +0000

Angular Client Side Pagination with Nodejs + MySQL

https://loizenai.com/angular-client-side-pagination-with-nodejs-mysql/

Tutorial: ” Angular Client Side Pagination with Nodejs + MySQL – Server Side Pagination in Node.js Angular MySQL database + Express + Sequelize CRUD ”

In the tutorial, I introduce how to build an “Angular 10 Nodejs Pagination RestAPIs Example with MySQL database (Server Side Pagination with filtering and sorting)” project using Express framework and Sequelize crud queries to interact with database’s records.

– Nodejs Express project (server side pagination) produces pagination RestAPIs with MySQL database records using Sequelize CRUD queries.
– Angular 10 project (client side pagination) will consume the Node.js pagination RestAPIs then show up on component’s views.

Architecture – Angular Client Side Pagination with Nodejs + MySQL

In the tutorial “Server Side Pagination in Node.js Angular 10”, We develop 2 projects:

Backend Project – Nodejs MySQL Pagination Application gets data from MySQL database then provides RestAPIs with pagination, filtering and sorting function for frontend
Frontend Project – Angular Application use HttpClient to fetch data from Backend Application then shows them in Bootstrap table with pagination, filtering and sorting functions

Project Goal – Angular Client Side Pagination with Nodejs + MySQL

– Make a request at API: /api/customers/pagefiltersort with pagination, filtering and sorting params as below:

page: 0 – first page
size: 5 – size of a page
salary: 4000 – filtering by salary field
agesorting: true – sorting by age
desc: true – descending or ascending sorting
– Result:

– Angular Frontend Pagination with Filtering and Sorting table:

Video Guide – Angular Client Side Pagination with Nodejs + MySQL

For the tutorial “Angular Client Side Pagination with Nodejs + MySQL”, I create a Youtube video guide with clearly steps to debug full-stack for all running flows of living code from Angular client to Nodejs backend pagination:

https://youtu.be/pkQY56B5Ut0

Overall Server Side Pagination in Node.js/Express Sequelize MySQL Pagination

To handling Pagination RestAPI requests and do Paging Filtering and Sorting queries with MySQL database, we create a backend web Node.js application with 4 main points:

To handle pagination RestAPI requests with Node.js, We use Express framework.
To do pagination filtering and sorting queries with MySQL database, We use Sequelize ORM.
We define all RestAPI URLs in router.js.
We implement code how to process each paging filtering and sorting RestAPI request in controller.js file.

Nodejs/Express Sequelize Pagination Queries

To do the pagination with database, Sequelize ORM provides 2 model methods for supporting the purpose with limit and offset parameters:

.findAll() – Search for multiple elements in the database
.findAndCountAll() - Search for multiple elements in the database, returns both data and total count
How about limit & offset for nodejs pagination?

limit is the maximum number of records to fetch
offset is the quantity of records to skip
For example, if we have total 12 items:

{ offset: 5 }: skip first 5 items, fetch 7 remaining items.
{ limit: 5 }: fetch first 5 items.
{ offset: 5, limit: 5 }: skip first 5 items, fetch 6th and 10th items.

Tutorial Link

https://loizenai.com/angular-client-side-pagination-with-nodejs-mysql/

Youtube Video

Crud Operation In React.js and Mysql

ozenero.com — Sun, 03 Jan 2021 07:40:04 +0000

Crud Operation In React.js and Mysql

Tutorial : https://loizenai.com/react-node-js-crud-mysql/

Crud Operation In React.js and Mysql

Tutorial: React Node.js MySQL CRUD Example – Step By Step React, Nodejs and Mysql simple full-stack Application

In the tutorial, I introduce how to build an “React.js Nodejs CRUD MySQL Example” project with the help of Ajax to POST/GET/PUT/DELETE requests with step by step coding examples:

– Nodejs project produces CRUD RestAPIs with MySQL database using the supporting of Sequelize ORM.
– React.js project will consume the Nodejs CRUD RestAPIs by Ajax then show up on Reactjs component’s views.

– I draw a fullstack overview Diagram Architecture from React.js Frontend to MySQL database through Nodejs RestAPI backend.
– Develop Nodejs CRUD RestAPIs with the supporting of Sequelize ORM.
– Implement Reactjs CRUD application with Ajax fetching APIs to do CRUD request (Post/Get/Put/Delete) to Nodejs Backend APIs.
– I create a testsuite with a number of integrative testcases with CRUD RestAPI requests from Reactjs to do CRUD requests to Nodejs RestAPIs Server and save/retrieve data to MySQL database.

React Node.js Mysql CRUD Example – Step By Step React, Nodejs and Mysql simple full-stack Application

Overall Architecture System: Reactjs + Nodejs + MySQL – React Node.js MySQL CRUD Example - Crud Operation In React.js and Mysql

We build a backend: Nodejs CRUD Application with MySQL that provides RestAPIs for POST/GET/PUT/DELETE data entities and store them in MySQL database.
We implement React.js CRUD Application that use Ajax to interact (call/receive requests) with Nodejs CRUD application and display corresponding data in Reactjs Component.

Nodejs MySQL CRUD Design Application – React Node.js MySQL CRUD Example

We have 4 main blocks for the application:

For building RestAPIs in Nodejs application, we use Express framework.
For interacting with database MySQL, we use Sequelize ORM.
We define APIs URL in router.js file
We implement how to process each API URL in controller.js file
We use Bootstrap and JQuery Ajax to implement frontend client.

Reactjs CRUD Application Design – React Node.js MySQL CRUD Example - Crud Operation In React.js and Mysql

– Reactjs CRUD Application is designed with 2 main layers:

React.js components let you split the UI into independent, reusable pieces, and think about each piece in isolation.
Ajax is used by Reactjs component to fetch (post/put/get/delete) data from remote restapi by http request
Reactjs CRUD Application defines 5 components:

Home.js is used serve as the landing page for your app.
AppNavbar.js is used to establish a common UI feature between components.
CustomerList.js is used to show all customers in the web-page
CustomerEdit.js is used to modify the existed customer
App.js uses React Router to navigate between components.

Integrative Project Goal – React Node.js MySQL CRUD Example

Reactjs Home page:

Reactjs List all data:

Reactjs add data:

Reactjs update data:

Reactjs delete a customer with id=2, check the Customer List after deleting:

Check MySQL Database after do CRUD operations:

Tutorial Link - Crud Operation In React.js and Mysql

https://loizenai.com/react-node-js-crud-mysql/

Youtube Video - Crud Operation In React.js and Mysql

https://www.youtube.com/watch?v=MjLjHEP74vE&t=28s

SpringBoot Angular Pagination Example

ozenero.com — Sun, 03 Jan 2021 07:37:35 +0000

Tutorial Link: https://loizenai.com/spring-boot-angular-pagination-example/

SpringBoot Angular Pagination Example

Tutorial: “Spring Boot Angular Pagination Example – Angular Table Pagination Filtering Sorting with SpringBoot RestAPIs + Bootstrap Example”

When we have a large dataset and we want to present it to the user in smaller chunks, pagination and sorting is often helpful solution. So in the tutorial, I introduce how to use Angular to build a table solution for pagination, filtering and sorting the fetching data with SpringBoot RestAPIs examples.

Overview Spring Boot Angular Pagination Example

Backend Project – SpringBoot Application gets data from MySQL/PostgreSQL database then provides RestAPIs with pagination, filtering and sorting function for frontend
Frontend Project – Angular Application use HttpClient to fetch data from Backend Application then shows them in Bootstrap table with pagination, filtering and sorting functions

Project Goal – Spring Boot Angular Pagination Example

– Make a request at API: /api/customers/custom/pageable with pagination, filtering and sorting params as below:

page: 0 – first page
size: 5 – size of a page
salary: 4000 – filtering by salary field
agesorting: true – sorting by age
desc: true – descending or ascending sorting

– Result:

– Angular Frontend Pagination with Filtering and Sorting table:

Tutorial Link - SpringBoot Angular Pagination Example

https://loizenai.com/spring-boot-angular-pagination-example/

Youtube video

Spring Boot Pagination and Sorting Example

ozenero.com — Thu, 31 Dec 2020 19:11:29 +0000

Spring Boot Pagination and Sorting Example

Tutorial Link: https://loizenai.com/spring-boot-pagination-filter/

When we have a large dataset and we want to present it to the user in smaller chunks, pagination and sorting is often helpful solution. So in the tutorial, I introduce how to build “Spring Boot Pagination and Sorting Example” use Spring JPA APIs of PagingAndSortingRepository to do the task with SpringBoot project example.

Goal – Spring Boot Pagination and Sorting Example

– Paging Request:

– Pagination and Sorting request:

PagingAndSorting Repository

Reactjs Nodejs PostgreSQL Example

ozenero.com — Thu, 31 Dec 2020 17:46:29 +0000

Link tutorial: https://loizenai.com/reactjs-nodejs-postgresql-example/

In the tutorial, I introduce how to build an “React.js Nodejs CRUD PostgreSQL Example” project with the help of Ajax to POST/GET/PUT/DELETE requests with step by step coding examples:

– Nodejs project produces CRUD RestAPIs with PostgreSQL database using the supporting of Sequelize ORM.
– React.js project will consume the Nodejs CRUD RestAPIs by Ajax then show up on Reactjs component’s views.

List to do:

– I draw a fullstack overview Diagram Architecture from React.js Frontend to PostgreSQL database through Nodejs RestAPI backend.
– Develop Nodejs CRUD RestAPIs with the supporting of Sequelize ORM.
– Implement Reactjs CRUD application with Ajax fetching APIs to do CRUD request (Post/Get/Put/Delete) to Nodejs Backend APIs.
– I create a testsuite with a number of integrative testcases with CRUD RestAPI requests from Reactjs to do CRUD requests to Nodejs RestAPIs Server and save/retrieve data to PostgreSQL database.

Overall Architecture System: Reactjs + Nodejs + PostgreSQL

![Overall Architecture System: Reactjs + Nodejs + PostgreSQL]https://loizenai.com/wp-content/uploads/2020/11/React.js-Nodejs-PostgreSQL-Diagram-Architecture.png

We build a backend: Nodejs CRUD Application with PostgreSQL that provides RestAPIs for POST/GET/PUT/DELETE data entities and store them in PostgreSQL database.
We implement React.js CRUD Application that use Ajax to interact (call/receive requests) with Nodejs CRUD application and display corresponding data in Reactjs Component.

Nodejs PostgreSQL CRUD Design Application

We have 4 main blocks for the application:

For building RestAPIs in Nodejs application, we use Express framework.
For interacting with database PostgreSQL, we use Sequelize ORM.
We define APIs URL in router.js file
We implement how to process each API URL in controller.js file
We use Bootstrap and JQuery Ajax to implement frontend client.

Reactjs CRUD Application Design

Reactjs CRUD Application design

– Reactjs CRUD Application is designed with 2 main layers:

Reactjs CRUD Application defines 5 components:

Home.js is used serve as the landing page for your app.
AppNavbar.js is used to establish a common UI feature between components.
CustomerList.js is used to show all customers in the web-page
CustomerEdit.js is used to modify the existed customer
App.js uses React Router to navigate between components.

Integrative Project Goal

Tutorial Link: Reactjs Nodejs PostgreSQL Example

Nodejs Reactjs Tutorial:

Node.js PostgreSQL CRUD Example

ozenero.com — Sun, 20 Dec 2020 16:57:27 +0000

Node.js PostgreSQL CRUD Example Express RestAPIs + Sequelize + PostgreSQL tutorial

Tutorial Link : Nodejs PostgreSQL CRUD Example

In the tutorial, I will introduce step by step how to create a ‘Node.js PostgreSQL CRUD Example – Express RestAPIs + Sequelize + PostgreSQL tutorial’ with a full-stack technologies: Express RestAPI Framework (Cors + Body-Parse) + Sequelize ORM + PostgreSQL database.

Overview Architecture – Node.js Express Sequelize PostgreSQL CRUD RestAPIs Example

To handling all POST/GET/PUT/DELETE RestAPI requests and do CRUD with PostgreSQL database, we create a backend web Node.js application with 4 main points:

To handle CRUD RestAPI requests with Node.js, we use Express.js framework.
To do CRUD operations with PostgreSQL database, we use Sequelize ORM queries.
We define all RestAPI urls in router.js.
We implement how to process each RestAPI requests in controller.js file.

Project Goal

After the tutorial, we will understand overall architecture and clearly picture how to create a full backend web restapis application with Node.js technology from abstract overview to specific helpful frameworks and details sourcecode for connecting all things in one application.

We will define 8 RestAPIs with POST/GET/PUT/DELETE methods for posting, fetching, updating, removing, pagination, filtering and sorting data from PostgreSQL database:

– For normally requests with POST/GET/PUT/DELETE methods, we create a first GROUP with 5 RestAPIs:

POST RestAPI /api/customers/create will handle the submit data from client to save in PostgreSQL database
GET RestAPI /api/customers/all will fetch all data from PostgreSQL database
GET RestAPI /api/customers/onebyid/:id will get a single data by primary key id
PUT RestAPI /api/customers/update/:id will update an existed record in PostgreSQL database
DELETE RestAPI /api/customers/delete/:id will delete an existed record in PostgreSQL which is associated with a primary key id

– For advanced purpose such as Filtering, Pagination and Sorting, we create the second RestAPIs group:

1.Filtering Request – GET RestAPI /api/customers/filteringbyage is used to fetch all records from PostgreSQL with a filtering by age
2.Pagination Request – GET RestAPI /api/customers/pagination is used to fetch data from PostgreSQL with pagination purpose.

Pagination Filtering and Sorting – GET RestAPI /api/customers/pagefiltersort is defined to fetch data from PostgreSQL with pagination, filtering by age and ordering by 2 fields firstname and lastname

Testcase 1 – Nodejs Express PostgreSQL POST Request

Check PostgreSQL’s records:

Testcase 2 – Nodejs Express PostgreSQL GET Request: get all data from PostgreSQL

Testcase 3 – Nodejs Express PostgreSQL GET Request: get one data record from PostgreSQL with a given id

Testcase 4 – Nodejs Express PostgreSQL UPDATE request

Testcase 5 – Nodejs Express PostgreSQL DELETE request: delete a record with a given id

Testcase 6 – Nodejs Express PostgreSQL Filtering request by a field

Testcase 7 – Nodejs Express PostgreSQL Pagination request

What does it mean? We had done a pagination request to fetch a second page page = 1 with a size of page is 7 (limit=7)

The RestAPI returns a json result with useful informantion as below:

totalItems describes the number of records in database
totalPages describes the total number of pages with requested limit
limit describes the number of items for a fetching page
currentPageNumber is the order number of requested page (currentPageNumber = page + 1)
currentPageSize is the size of the current page (currentPageSize <= limit)
customers is a dataset attached with the pagination request

Using Native PostgreSQL query with LIMIT statement to check the above result:

Testcase 8 - Nodejs Express PostgreSQL Pagination Filtering and Sorting request

What does it mean? - The above request had done with 3 proccessing steps:

Do the Filtering with age=23, and We just have 4 Customer items in database having age is 23 so returned totalItems is 4. The totalPages is 2 because of 2 reason:
limit: 3
and totalPages = Math.ceil(data.count / limit) = Math.ceil(4 / 3)

Do the pagination with offset = 0 (limit*page) and row_counts = 3:

Finally Do the Sorting by firstname with ascending order and lastname with descending order:

Angular 11 Spring Boot PostgreSQL CRUD Example

ozenero.com — Thu, 17 Dec 2020 14:01:59 +0000

Angular 11 Spring Boot PostgreSQL CRUD Example

https://loizenai.com/angular-11-spring-boot-postgresql-crud-example/

In the tutorial, I introduce how to create an “SpringBoot Angular Postgresql CRUD Example” with POST/GET/PUT/DELETE requests to SpringBoot RestAPIs.

– Design overview system by Architecture Diagram that includes: Angular Client, SpringBoot RestAPIs, and Postgresql database.
– Implement Angular CRUD Client with Angular built-in HttpClient to communicate with server side.
– Implement SpringBoot RestAPIs that gets data from Postgresql using Spring Data JPA and returns back data as Json format to requested Angular Client.

Overall Angular 11 Spring Boot Postgresql CRUD Architecture Application

We build backend SpringBoot Application that provides RestAPIs for POST/GET/PUT/DELETE Customer entities and store them in Postgresql/PostgreSQL database.
We implement Angular Application that use Angular HTTPClient to interact (call/receive requests) with SpringBoot backend and display corresponding page view in browser.

Overview Spring Boot CRUD Postgresql Backend Architecture

For building RestAPIs in SpringBoot application, we use Spring MVC Web.
For interacting with database Postgresql/PostgreSQL, we use Spring JPA.
We implement RestAPI’s URL in RestAPIController.java file to process bussiness logic.
For manipulating database’s records, we define a JPA model for mapping field data and use a JPA CRUD repository to do CRUD operation with Postgresql/PostgreSQL.

– SpringBoot Project Structure

models package defines Customer model and Message response class.
repository package defines Spring JPA repository class CustomerRepository to do CRUD operation with database.
service package defines a middleware class CustomerServices between Controller and Repository.
controller package defines a RestAPI Controller RestAPIController to handle POST/GET/PUT/DELETE request.

Overview Angular CRUD Architecture Design

Angular CRUD Application (in “Angular 11 Spring Boot PostgreSQL CRUD Tutorial”) is designed with 3 main layers:

Service Layer is used to define Angular Common Services and HttpClient Services to interact with RestAPIs
Component Layer is used to define Angular Components to show views in Browser for interacting with Users
Router Layer is used to route URLs mapping with the corresponding Angular Components

Angular Project Structure:

Angular CRUD Application defines 3 components, 2 services, 1 routers, and 2 data models:

– Components:

customer.service.ts defines POST/GET/PUT/DELETE HTTP requests to SpringBoot RestAPIs with the built-in Angular HttpClient.
message.service.ts defines an array storage to log all messages when Angular CRUD App running

– Router: app-routing.module.ts defines how to map a corresponding Angular component with an URL.

– Models:

customer.ts defines the main data model of our application.
message.ts defines the response data model between SpringBoot and Angular application.

Goal – Angular SpringBoot CRUD Postgresql

– Add new Customer: from Angular to SpringBoot and save to Postgresql.

– List All Customers: from Angular calls SpringBoot RestAPI to get customer from Postgresql.

– Details a Customer: from Angular calls get http request from SpringBoot RestAPI to get a record in Postgresql database

– Update a Customer: from Angular calls a put http request from SpringBoot RestAPI to update a record in Postgresql database.

– Delete a Customer: from Angular calls a delete http request from SpringBoot RestAPI to delete a record in Postgresql database.

– Check database records: do a get request from Angular to SpringBoot RestAPI.

Video Guide – Angular SpringBoot CRUD Postgresql Example FullStack DEBUG

https://youtu.be/848fOT3Jt44

Reactjs JWT Authentication Example

ozenero.com — Thu, 17 Dec 2020 13:50:25 +0000

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:

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
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:

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

Angular Spring Boot Jwt Authentication Example

ozenero.com — Thu, 17 Dec 2020 13:48:49 +0000

Youtube Link: [https://youtu.be/7ZfInOvFsz0]

https://loizenai.com/angular-10-spring-boot-jwt-authentication-example/

Tutorial: Angular 10 Spring Boot JWT Authentication Example with Angular 10 + MySQl + Spring Security

In tutorial ‘Angular 11 Spring Boot JWT Token Based Authentication Example’, I guide you very clearly how to implement full stack example to demonistrade an jwt token based authentication flow from frontend Angular 11 to backend: SpringBoot and MySQL.

Technology Stack: Angular11, SpringBoot, Jwt, SpringBoot, MySQL, PostgreSQL, Spring Security, Spring JPA

– I give you an Epic of the application, a fullstack excutive flow from frontend Angular 11 to backend jwt SpringBoot Security to database (MySQL/PostgreSQL) with overall architecture diagram.
– I give you a layer diagram of Angular 11 Jwt Authentication application with localStorage and Angular HttpClient (plus Interceptor)
– I guide you detail-steps how to implement a security SpringBoot Jwt Token Authentication.
– I guide you step by step how to develop a Angular 11 Jwt Authentication application.
– Finally, I do an integrative testing from Angular 11 to Jwt Based Token SpringBoot Security RestApis.

Overview Angular 11 Spring Boot JWT Authentication example

We will build an application, from frontend (Angular 11) 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:

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.

In the tutorial, “Angular 11 Spring Boot JWT Authentication Example”, we need the Angular HTTP Interceptor to add JWT Authentication Token Based for Security:

– 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.

YOUTUBE: [https://youtu.be/7ZfInOvFsz0]
Post Link: https://loizenai.com/angular-10-spring-boot-jwt-authentication-example/

Jwt Springboot Reactjs Token Authentication Example - React.js Spring Security Login

ozenero.com — Thu, 10 Dec 2020 17:23:03 +0000

Jwt Springboot Reactjs Token Authentication Example - React.js Spring Security Login

Tutorial Link: https://loizenai.com/reactjs-springboot-jwt-token-authentication/

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. And “How to build Reactjs Jwt SpringBoot Token Based Authentication Example?” is one of the most common questions for SpringBoot Java development world. So in the tutorial, I introduce how to implement an application “Reactjs JWT SpringBoot 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 guide you detail-steps how to implement a security Jwt Token SpringBoot backend.
– 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 jwt SpringBoot Security RestAPIs.

Overall System Architecture Diagram

JWT Authentication Sequence Diagram

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

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
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.

Reactjs JWT Authentication 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.

Jwt SpringBoot Token Security RestAPIs Diagram Overview

This is diagram for Spring Security/JWT (Springboot Token Based Authentication Example) classes that are separated into 3 layers:
– HTTP
– Spring Security
– REST API

Look at the diagram above, we can easily associate these components with Spring Security Authentication process: receive HTTP request, filter, authenticate, store Authentication data, generate token, get User details, authorize, handle exception…

At a glance:
– 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.

Project Goal

We create a Reactjs JWT Authentication project as below:

Reactjs Project structure

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:

User page

– Project Manager Page:

– Reactjs Admin page:

Realated post

Angular 10 + Spring Boot JWT Token Based Authentication Example – Spring Security + MySQL
Angular 10 + Nodejs JWT Token Based Authentication with MySQL Example – Express RestAPIs + JWT + BCryptjs + Sequelize
SpringBoot Token Based Authentication Example – MySQL + JWT+ Spring JPA + RestAPIs

DEV Community: ozenero.com

Reactjs Nodejs MongoDB CRUD Example – MERN Stack Application

Reactjs Nodejs MongoDB CRUD Example – MERN Stack Application

List to do - Reactjs Nodejs MongoDB CRUD Example:

Overall Architecture System: Reactjs + Nodejs + MongoDB

Nodejs MongoDB CRUD Design Application

Reactjs CRUD Application Design

Integrative Project Goal

Related posts - Reactjs Nodejs MongoDB CRUD Example

Youtube - Reactjs Nodejs MongoDB CRUD Example

Django Angular MySQL CRUD Example

Django Angular MySQL CRUD Example

Architecture – Django Angular CRUD Example

Django RestAPIs CRUD MySQL Workflow – Django Angular MySQL CRUD Example

Django RestAPI CRUD Project Structure – Django Angular MySQL CRUD Example

Angular Frontend Architecture – Django Angular MySQL CRUD Example

Angular CRUD Project Structure – Django Angular MySQL CRUD Example

Angular Django MySQL Example – Project Goal – Django Angular MySQL CRUD Example

Tutorial

Related posts

Youtube

Angular Client Side Pagination with Nodejs + MySQL

Angular Client Side Pagination with Nodejs + MySQL

Architecture – Angular Client Side Pagination with Nodejs + MySQL

Project Goal – Angular Client Side Pagination with Nodejs + MySQL

Video Guide – Angular Client Side Pagination with Nodejs + MySQL

Overall Server Side Pagination in Node.js/Express Sequelize MySQL Pagination

Nodejs/Express Sequelize Pagination Queries

Tutorial Link

Related post

Youtube Video

Crud Operation In React.js and Mysql

Crud Operation In React.js and Mysql

Overall Architecture System: Reactjs + Nodejs + MySQL – React Node.js MySQL CRUD Example - Crud Operation In React.js and Mysql

Nodejs MySQL CRUD Design Application – React Node.js MySQL CRUD Example

Reactjs CRUD Application Design – React Node.js MySQL CRUD Example - Crud Operation In React.js and Mysql

Integrative Project Goal – React Node.js MySQL CRUD Example

Tutorial Link - Crud Operation In React.js and Mysql

Youtube Video - Crud Operation In React.js and Mysql

Related post - Crud Operation In React.js and Mysql

SpringBoot Angular Pagination Example

SpringBoot Angular Pagination Example

Overview Spring Boot Angular Pagination Example

Project Goal – Spring Boot Angular Pagination Example

Tutorial Link - SpringBoot Angular Pagination Example

Related posts - SpringBoot Angular Pagination Example

Youtube video

Spring Boot Pagination and Sorting Example

Goal – Spring Boot Pagination and Sorting Example

PagingAndSorting Repository

Reactjs Nodejs PostgreSQL Example

Overall Architecture System: Reactjs + Nodejs + PostgreSQL

Nodejs PostgreSQL CRUD Design Application

Reactjs CRUD Application Design

Integrative Project Goal

Node.js PostgreSQL CRUD Example

Node.js PostgreSQL CRUD Example Express RestAPIs + Sequelize + PostgreSQL tutorial

Overview Architecture – Node.js Express Sequelize PostgreSQL CRUD RestAPIs Example

Project Goal

Testcase 1 – Nodejs Express PostgreSQL POST Request

Testcase 2 – Nodejs Express PostgreSQL GET Request: get all data from PostgreSQL

Testcase 3 – Nodejs Express PostgreSQL GET Request: get one data record from PostgreSQL with a given id

Testcase 4 – Nodejs Express PostgreSQL UPDATE request

Testcase 5 – Nodejs Express PostgreSQL DELETE request: delete a record with a given id

Testcase 6 – Nodejs Express PostgreSQL Filtering request by a field

Testcase 7 – Nodejs Express PostgreSQL Pagination request

Testcase 8 - Nodejs Express PostgreSQL Pagination Filtering and Sorting request

Related post

Angular 11 Spring Boot PostgreSQL CRUD Example

Angular 11 Spring Boot PostgreSQL CRUD Example

Overall Angular 11 Spring Boot Postgresql CRUD Architecture Application

Overview Spring Boot CRUD Postgresql Backend Architecture

Overview Angular CRUD Architecture Design

Goal – Angular SpringBoot CRUD Postgresql

Video Guide – Angular SpringBoot CRUD Postgresql Example FullStack DEBUG

Related posts

Reactjs JWT Authentication Example

Reactjs JWT Authentication Example

Overall Epic System Architecture Diagram

JWT Authentication Sequence Diagram