Blog post: https://developer.okta.com/blog/2017/12/06/bootiful-development-with-spring-boot-and-react GitHub repo: https://github.com/oktadeveloper/spring-boot-react-example To simplify development and deployment, you want everything in the same artifact, so you put your React app “inside” your Spring Boot app, right? But what if you could create your React app as a standalone app and make cross-origin requests to your API? A client app that can point to any server makes it easy to test your current client code against other servers (e.g. test, staging, production). This session shows how to develop with Java 8, Spring Boot, React, and TypeScript. You’ll learn how to create REST endpoints with Spring MVC, configure Spring Boot to allow CORS, and create a React app to display its data.

1. Matt Raible | @mraible
Bootiful Development with Spring Boot and React
September 12, 2018
https://www.flickr.com/photos/zachwerner/7513254696

2. Blogger on raibledesigns.com and
developer.okta.com/blog
Web Developer and Java Champion
Father, Skier, Mountain Biker,
Whitewater Rafter
Open Source Connoisseur
Who is Matt Raible?
Bus Lover
Okta Developer Advocate

6. developer.okta.com

7. @spring_io
#springio17
Authentication/Authorization Standards

8. What About You?

9. Bootiful Development
http://bit.ly/boot-and-react

10. OAuth 2.0 Overview
Today’s Agenda
Why Spring Boot?
Demo: Developing with Spring Boot
Introduction to ES6 and TypeScript
Why React?
Demo: Developing with React
Introduction to PWAs and JHipster

11. Spring Boot
Automatically configures Spring whenever possible
Provides production-ready features such as metrics,
health checks and externalized configuration
Absolutely no code generation and no requirement for
XML configuration
Embeds Tomcat, Jetty or Undertow directly

12. SPRING INITIALIZR @ start.spring.io

14. @SpringBootApplication
public class DemoApplication {
public static void main(String[] args) {
SpringApplication.run(DemoApplication.class, args);
}
}
@Entity
class Blog {
@Id
@GeneratedValue
private Long id;
private String name;
// getters, setters, toString(), etc
}
@RepositoryRestResource
interface BlogRepository extends JpaRepository<Blog, Long> {
}

15. @spring_io
#springio17
Microservices with Spring Boot
https://developer.okta.com/blog/2017/06/15/build-microservices-architecture-spring-boot

16. @spring_io
#springio17
Secure Microservices with Spring Boot
https://developer.okta.com/blog/2018/02/13/secure-spring-microservices-with-oauth

17. Demo: Build a Spring Boot API

18. ES6, ES7 and TypeScript
ES5: es5.github.io
ES6: git.io/es6features
ES7: bit.ly/es7features
TS: www.typescriptlang.org
TSES7ES6ES5

19. TypeScript
$ npm install -g typescript
function greeter(person: string) {
return "Hello, " + person;
}
var user = "Jane User";
document.body.innerHTML = greeter(user);
$ tsc greeter.ts
https://www.typescriptlang.org/docs/tutorial.html

20. @spring_io
#springio17
bus.ts

21. “Node.js is a JavaScript runtime built on Chrome's V8
JavaScript engine. Node.js uses an event-driven, non-
blocking I/O model that makes it lightweight and
efficient. Node.js' package ecosystem, npm, is the
largest ecosystem of open source libraries in the world.”
https://nodejs.org
https://github.com/creationix/nvm

22. @spring_io
#springio17
Leading JavaScript Frameworks in 2018
angular.io
facebook.github.io/react
vuejs.org

25. “Angular and React dominate:
Nothing else even comes close.”

27. Crunch the Numbers

28. @spring_io
#springio17
Hot Frameworks hotframeworks.com

29. @spring_io
#springio17
Jobs on Indeed (US)
September 2018
0
2,500
5,000
7,500
10,000
React Angular Vue Vanilla

30. @spring_io
#springio17
Stack Overflow Tags
September 2018
0
35,000
70,000
105,000
140,000
React Angular Vue

31. @spring_io
#springio17
GitHub Stars
September 2018
0
30,000
60,000
90,000
120,000
React Angular Vue

32. @spring_io
#springio17
GitHub Star Growth
http://www.timqian.com/star-history

33. Hello World with React
http://codepen.io/gaearon/pen/ZpvBNJ?editors=0100
<div id="root"></div>
<script>
ReactDOM.render(
<h1>Hello, world!</h1>,
document.getElementById('root')
);
</script>

34. Imperative Code
if (count > 99) {
if (!hasFire()) {
addFire();
}
} else {
if (hasFire()) {
removeFire();
}
}
if (count === 0) {
if (hasBadge()) {
removeBadge();
}
return;
}
if (!hasBadge()) {
addBadge();
}
var countText = count > 99 ? "99+" : count.toString();
getBadge().setText(countText);

35. Declarative Code
if (count === 0) {
return <div className="bell"/>;
} else if (count <= 99) {
return (
<div className="bell">
<span className="badge">{count}</span>
</div>
);
} else {
return (
<div className="bell onFire">
<span className="badge">99+</span>
</div>
);
}

38. Create React App

39. Create React App

40. Ships with documentation!

41. Learning React
https://vimeo.com/213710634

42. @spring_io
#springio17
React Courses on egghead.io
https://blog.kentcdodds.com/learn-react-fundamentals-and-advanced-patterns-eac90341c9db

43. @spring_io
#springio17
Progressive Web Apps

44. “We’ve failed on mobile”
— Alex Russell
https://youtu.be/K1SFnrf4jZo

45. Mobile Hates You!
How to fight back:
Implement PRPL
Get a ~$150-200 unlocked Android (e.g. Moto G4)
Use chrome://inspect && chrome://inspect?tracing
Lighthouse
DevTools Network & CPU Throttling

46. The PRPL Pattern
Push critical resources for the initial URL route
Render initial route
Pre-cache remaining routes
Lazy-load and create remaining routes on demand

47. Learn More about PWAs
https://developer.okta.com/blog/2017/07/20/the-ultimate-guide-to-progressive-web-applications

48. Demo: Build a React Client
class BeerList extends React.Component<{}, any> {
constructor(props: any) {
super(props);
this.state = {
beers: [],
isLoading: false
};
}
componentDidMount() {
this.setState({isLoading: true});
fetch('http://localhost:8080/good-beers')
.then(response => response.json())
.then(data => this.setState({beers: data, isLoading: false}));
}
render() {
const {beers, isLoading} = this.state;
…
}
}

49. More Authentication with React

50. @spring_io
#springio17
JHipster jhipster.tech
JHipster is a development platform to generate, develop and deploy
Spring Boot + Angular/React Web applications and Spring microservices.

52. The JHipster Mini-Book
4.5 Release on April 6, 2018
jhipster-book.com
21-points.com
@jhipster_book
Write your own InfoQ mini-book! github.com/mraible/infoq-mini-book

53. Action!
Try Spring Boot
Try React
Try Okta
Explore PWAs
Enjoy the bootiful experience!

54. 🔐 it down with Okta!
https://developer.okta.com/blog/2017/09/19/build-a-secure-notes-application-with-kotlin-typescript-and-okta

55. @SpringBootApplication
class NotesApplication
fun main(args: Array<String>) {
SpringApplication.run(NotesApplication::class.java, *args)
}
@Entity
data class Note(@Id @GeneratedValue var id: Long? = null,
var text: String? = null,
@JsonIgnore var user: String? = null)
@RepositoryRestResource
interface NotesRepository : JpaRepository<Note, Long>

56. DIY: Bootiful Development
http://bit.ly/boot-and-react

57. CRUD with React and Spring Boot
http://bit.ly/react-boot-crud

58. Bootiful React with a Java EE API
https://developer.okta.com/blog/2018/09/12/secure-java-ee-rest-api

59. developer.okta.com/blog
@oktadev

60. Questions?
Keep in touch!
raibledesigns.com
@mraible
Presentations
speakerdeck.com/mraible
Code
github.com/oktadeveloper