![Java le(s)Java le(s)
// imports...
@RestController
public class HelloController {
@RequestMapping("/")
public String index() {
return "Greetings from Spring Boot!";
}
}
// imports...
@SpringBootApplication
public class Application {
public static void main(String[] args) {
SpringApplication.run(Application.class, args);
}
}](https://image.slidesharecdn.com/buildingaspringbootapplication-asktheaudience-180130142136/85/Building-a-Spring-Boot-Application-Ask-the-Audience-from-JVMCon-2018-10-320.jpg)
Building a Spring Boot Application - Ask the Audience! (from JVMCon 2018)
- 1. Building aBuilding a Spring BootSpring Boot ApplicationApplication (ask the audience)(ask the audience) Hanno Embregts @hannotify
- 3. IntroducingIntroducingIntroducingIntroducingIntroducing Spring BootSpring BootSpring BootSpring BootSpring Boot
- 4. Spring Boot?Spring Boot? ( ) "Takes an opinionated view of building production-ready Spring applications. Favors convention over con guration and is designed to get you up and running as quickly as possible." https://projects.spring.io/spring-boot
- 5. Key features?Key features? create stand-alone Spring applications embed web server directly (no WAR les) automatic Spring con guration wherever possible no code generation and no XML con guration still offering all Spring features.
- 6. Pros?Pros? no separate web server needed better debugging in IDEs faster deployments (about 50%) no web.xml or con guration classes needed up and running with one Java le and a build script. ( )https://www.ethode.com/blog/6-simple-reasons-why-spring-boot-rocks
- 7. Cons?Cons? custom con guration will be a bit of a puzzle porting your legacy Spring project would be a disaster! it uses Spring, excluding roughly half of the Java community.
- 8. Starting OutStarting OutStarting OutStarting OutStarting Out
- 9. About What We ClaimedAbout What We Claimed Earlier...Earlier... "up and running with one Java le and a build script"
- 10. Java le(s)Java le(s) // imports... @RestController public class HelloController { @RequestMapping("/") public String index() { return "Greetings from Spring Boot!"; } } // imports... @SpringBootApplication public class Application { public static void main(String[] args) { SpringApplication.run(Application.class, args); } }
- 11. Build scriptBuild script apply plugin: 'java' apply plugin: 'idea' apply plugin: 'org.springframework.boot' jar { // some properties... } // repositories... dependencies { compile("org.springframework.boot:spring-boot-starter-web") testCompile("junit:junit") }
- 12. Starter DependenciesStarter Dependencies a set of convenient dependency descriptors follow the naming pattern spring-boot-starter- * Name Purpose spring-boot-starter Core starter, includes auto-con g & logging spring-boot-starter-test Test starter, includes JUnit, Hamcrest & Mockito spring-boot-starter-web Starter for Spring MVC Web applications spring-boot-starter-data-jpa Spring Data with JPA (more starters at ) http://docs.spring.io/spring- boot/docs/current/reference/htmlsingle/#using-boot-starter
- 13. Spring InitializrSpring Initializr (a quick way to download a project setup) http://start.spring.io/
- 14. Live codingLive codingLive codingLive codingLive coding
- 15. Kahoot! #1
- 16. Kahoot! #2
- 17. Implementing RepositoryImplementing Repository MethodsMethods De ne them in a @Query annotation Use one of the many supported query methods ( ) https://docs.spring.io/spring-data/jpa/docs/current/reference/html/#jpa.query- methods.query-creation List<Entity> findByNameContainingIgnoreCase(String name);
- 18. Wrap-up &Wrap-up &Wrap-up &Wrap-up &Wrap-up & QuestionsQuestionsQuestionsQuestionsQuestions
- 19. Wrap-upWrap-up Spring Boot gets you up & running quickly; assumes standard con guration for rapid development; plays nice with a wide range of frameworks; is up to the task no matter what choices you make.
- 20. And what if I prefer JavaEE?And what if I prefer JavaEE? At least you can use embedded servers: TomEE Embedded ( ) Wild y Swarm ( ) Quick assembly with JBoss ShrinkWrap ( ) http://tomee.apache.org/advanced/tomee-embedded/index.html http://wild y-swarm.io/ http://www.lordofthejars.com/2014/09/apache-tomee-shrinkwrap-javaee-boot- not.html
- 21. Any questions?Any questions?Any questions?Any questions?Any questions?
- 22. Thank you! ☺Thank you! ☺ Just can't get enough? https://hannotify.github.io @hannotify [email protected]