Photo Gallery with React, Spring Boot, and JHipster

This example app shows how to build a Photo Gallery with Spring Boot, React, and JHipster.

Please read Build a Photo Gallery PWA with React, Spring Boot, and JHipster to see how this app was created. You can also watch a screencast on YouTube.

Prerequisites: Java 8, Node.js, and Yarn.

Okta has Authentication and User Management APIs that reduce development time with instant-on, scalable user infrastructure. Okta’s intuitive API and expert support make it easy for developers to authenticate, manage, and secure users and roles in any application.

Getting Started
Links
Help
License

Getting Started

To install this example application, run the following commands:

git clone https://github.com/oktadeveloper/okta-react-photo-gallery-example.git photo-gallery
cd photo-gallery

This will get a copy of the project installed locally. To install all of its dependencies and start the app, run the commands below.

yarn
yarn webpack:build
./mvnw

To log in to your app, you’ll need to have Keycloak up and running. JHipster ships with a Docker container that has the default users and roles. Start Keycloak using the following command.

docker-compose -f src/main/docker/keycloak.yml up

The security settings in src/main/resources/config/application.yml are configured for this image.

security:
    basic:
        enabled: false
    oauth2:
        client:
            accessTokenUri: http://localhost:9080/auth/realms/jhipster/protocol/openid-connect/token
            userAuthorizationUri: http://localhost:9080/auth/realms/jhipster/protocol/openid-connect/auth
            clientId: web_app
            clientSecret: web_app
            scope: openid profile email
        resource:
            userInfoUri: http://localhost:9080/auth/realms/jhipster/protocol/openid-connect/userinfo

Setup Okta

To use Okta, you’ll need to change a few things. First, you’ll need to create a free developer account at https://developer.okta.com/signup/. After doing so, you’ll get your own Okta domain, that has a name like https://dev-123456.oktapreview.com.

Modify src/main/resources/application.yml to use your Okta settings.

security:
    basic:
        enabled: false
    oauth2:
        client:
            accessTokenUri: https://{yourOktaDomain}/oauth2/default/v1/token
            userAuthorizationUri: https://{yourOktaDomain}/oauth2/default/v1/authorize
            clientId: {clientId}
            clientSecret: {clientSecret}
            scope: openid profile email
        resource:
            userInfoUri: https://{yourOktaDomain}/oauth2/default/v1/userinfo

Create an OIDC App in Okta to get a {clientId} and {clientSecret}. To do this, log in to your Okta Developer account and navigate to Applications > Add Application. Click Web and click the Next button. Give the app a name you’ll remember, specify http://localhost:8080 as a Base URI, and http://localhost:8080/login as a Login Redirect URI. Click Done and copy the client ID and secret into your application.yml file.

Create a ROLE_ADMIN and ROLE_USER group and add users into them. Create a user (e.g., “admin@jhipster.org” with password “Java is hip in 2018!”). Modify e2e tests to use this account when running integration tests. You’ll need to change credentials in src/test/javascript/e2e/account/account.spec.ts and src/test/javascript/e2e/admin/administration.spec.ts.

Navigate to API > Authorization Servers, click the Authorization Servers tab and edit the default one. Click the Claims tab and Add Claim. Name it “roles”, and include it in the ID Token. Set the value type to “Groups” and set the filter to be a Regex of .*.

After making these changes, you should be good to go!

Links

This example uses the following open source libraries:

Help

Please post any questions as comments on the blog post, or visit our Okta Developer Forums. You can also email developers@okta.com if would like to create a support ticket.

This application was generated using JHipster 5.0.1, you can find documentation and help at https://www.jhipster.tech/documentation-archive/v5.0.1.

Download Details:

Author: oktadeveloper

Demo: https://developer.okta.com/blog/2018/06/25/react-spring-boot-photo-gallery-pwa

Source Code: https://github.com/oktadeveloper/okta-react-photo-gallery-example

#react #reactjs #javascript

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Photo Gallery with React, Spring Boot, and JHipster

Autumn Blick

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How native is React Native? | React Native vs Native App Development

If you are undertaking a mobile app development for your start-up or enterprise, you are likely wondering whether to use React Native. As a popular development framework, React Native helps you to develop near-native mobile apps. However, you are probably also wondering how close you can get to a native app by using React Native. How native is React Native?

In the article, we discuss the similarities between native mobile development and development using React Native. We also touch upon where they differ and how to bridge the gaps. Read on.

A brief introduction to React Native

Let’s briefly set the context first. We will briefly touch upon what React Native is and how it differs from earlier hybrid frameworks.

React Native is a popular JavaScript framework that Facebook has created. You can use this open-source framework to code natively rendering Android and iOS mobile apps. You can use it to develop web apps too.

Facebook has developed React Native based on React, its JavaScript library. The first release of React Native came in March 2015. At the time of writing this article, the latest stable release of React Native is 0.62.0, and it was released in March 2020.

Although relatively new, React Native has acquired a high degree of popularity. The “Stack Overflow Developer Survey 2019” report identifies it as the 8th most loved framework. Facebook, Walmart, and Bloomberg are some of the top companies that use React Native.

The popularity of React Native comes from its advantages. Some of its advantages are as follows:

Performance: It delivers optimal performance.
Cross-platform development: You can develop both Android and iOS apps with it. The reuse of code expedites development and reduces costs.
UI design: React Native enables you to design simple and responsive UI for your mobile app.
3rd party plugins: This framework supports 3rd party plugins.
Developer community: A vibrant community of developers support React Native.

Why React Native is fundamentally different from earlier hybrid frameworks

Are you wondering whether React Native is just another of those hybrid frameworks like Ionic or Cordova? It’s not! React Native is fundamentally different from these earlier hybrid frameworks.

React Native is very close to native. Consider the following aspects as described on the React Native website:

Access to many native platforms features: The primitives of React Native render to native platform UI. This means that your React Native app will use many native platform APIs as native apps would do.
Near-native user experience: React Native provides several native components, and these are platform agnostic.
The ease of accessing native APIs: React Native uses a declarative UI paradigm. This enables React Native to interact easily with native platform APIs since React Native wraps existing native code.

Due to these factors, React Native offers many more advantages compared to those earlier hybrid frameworks. We now review them.

#android app #frontend #ios app #mobile app development #benefits of react native #is react native good for mobile app development #native vs #pros and cons of react native #react mobile development #react native development #react native experience #react native framework #react native ios vs android #react native pros and cons #react native vs android #react native vs native #react native vs native performance #react vs native #why react native #why use react native

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How to Configure the Interceptor With Spring Boot Application

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What is Spring?

Spring Boot

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Spring Boot + React Redux example: Build a CRUD App

In this tutorial, we will learn how to build a full stack React Redux + Spring Boot example with a CRUD App. The back-end server uses Spring Boot with Spring Web MVC for REST APIs and Spring Data JPA for interacting with embedded database (H2 database). Front-end side is made with React, Redux, React Router, Axios & Bootstrap.

Full Article: https://bezkoder.com/spring-boot-react-redux-example/

Spring Boot React Redux example Overview

We will build a full-stack Spring Boot & React Redux Tutorial Application in that:

Each Tutorial has id, title, description, published status.
We can create, retrieve, update, delete Tutorials.
We can also find Tutorials by title.

The images below shows screenshots of our System.

Create a Tutorial:

spring-boot-react-redux-example-crud-create-tutorial

Retrieve all Tutorials:

spring-boot-react-redux-example-crud-retrieve-tutorial

Click on Edit button to retrieve an item:

spring-boot-react-redux-example-crud-retrieve-one-tutorial

On this Page, you can:

change status to Published using Publish button
remove the Tutorial from Database using Delete button
update the Tutorial details on Database with Update button

spring-boot-react-redux-example-crud-update-tutorial

Search items by title:

spring-boot-react-redux-example-crud-search-tutorial

Architecture of Spring Boot React Redux example

This is the application architecture we're gonna build:

spring-boot-react-redux-example-crud-architecture

Spring Boot exports REST Apis using Spring Web MVC & interacts with embedded H2 Database using Spring JPA
React Client sends HTTP Requests and retrieves HTTP Responses using Axios, consume data on Redux which provides state to the Components. React Router is used for navigating to pages.

You can also find the Spring Restful Apis that works with other databases here:
- Spring JPA + PostgreSQL
- Spring JPA + MySQL
- Spring Data + MongoDB

Spring Boot Rest Apis Back-end

Overview

These are APIs that Spring Boot App will export:

Methods	Urls	Actions
POST	/api/tutorials	create new Tutorial
GET	/api/tutorials	retrieve all Tutorials
GET	/api/tutorials/:id	retrieve a Tutorial by `:id`
PUT	/api/tutorials/:id	update a Tutorial by `:id`
DELETE	/api/tutorials/:id	delete a Tutorial by `:id`
DELETE	/api/tutorials	delete all Tutorials
GET	/api/tutorials?title=[keyword]	find all Tutorials which title contains `keyword`

- We make CRUD operations & finder methods with Spring Data JPA's JpaRepository. - The database will be H2 Database (in memory or on disk) by configuring project dependency & datasource.

Technology

Java 8
Spring Boot 2.4 (with Spring Web MVC, Spring Data JPA)
H2 Database
Maven 3.6.1

Project Structure

spring-boot-react-redux-example-crud-server-project-structure

– Tutorial data model class corresponds to entity and table tutorials.
– TutorialRepository is an interface that extends JpaRepository for CRUD methods and custom finder methods. It will be autowired in TutorialController.
– TutorialController is a RestController which has request mapping methods for RESTful requests such as: getAllTutorials, createTutorial, updateTutorial, deleteTutorial, findByPublished…
– Configuration for Spring Datasource, JPA & Hibernate in application.properties.
– pom.xml contains dependencies for Spring Boot and H2 Database.

React Redux Front-end

Overview

This is React components that we're gonna implement:

spring-boot-react-redux-example-crud-client-components

– The App component is a container with React Router. It has navbar that links to routes paths.

– Three components that dispatch actions to Redux Thunk Middleware which uses TutorialDataService to call Rest API.

TutorialsList component gets and displays Tutorials.
Tutorial component has form for editing Tutorial's details based on :id.
AddTutorial component has form for submission new Tutorial.

– TutorialDataService uses axios to make HTTP requests and receive responses.

This diagram shows how Redux elements work in our React Application:

spring-boot-react-redux-example-crud-store-architecture

We’re gonna create Redux store for storing tutorials data. Other React Components will work with the Store via dispatching an action.

The reducer will take the action and return new state.

Technology

React 17/16
react-redux 7.2.3
redux 4.0.5
redux-thunk 2.3.0
react-router-dom 5.2.0
axios 0.21.1
bootstrap 4

Project Structure

![spring-boot-react-redux-example-crud-client-project-structure](https://dev-to-uploads.s3.amazonaws.com/uploads/articles/k0pmxledyj2pe0iru91w.png)

package.json contains main modules: react, react-router-dom, react-redux, redux, redux-thunk, axios & bootstrap.
App is the container that has Router & navbar.
There are 3 components: TutorialsList, Tutorial, AddTutorial.
http-common.js initializes axios with HTTP base Url and headers.
TutorialDataService has methods for sending HTTP requests to the Apis.
.env configures port for this React CRUD App.

About Redux elements that we’re gonna use:

actions folder contains the action creator (tutorials.js for CRUD operations and searching).
reducers folder contains the reducer (tutorials.js) which updates the application state corresponding to dispatched action.

For more steps and Source code, please visit:
https://bezkoder.com/spring-boot-react-redux-example/

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Configuring log4j2 is really quick and simple; this tutorial video explains the entire process in only 5 minutes, while you wait for your coffee to brew.

In the video below, we take a closer look at the How to configure log4j2 in the Spring boot application using log4j2.xml? | Spring Boot logging. Let’s get started!

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Photo Gallery with React, Spring Boot, and JHipster