Spring Bootを触ってみた

社内勉強会にてSpring Bootについて発表した資料です。

Transcript

1. Spring BootΛ ৮ͬͯΈͨ 2016-12-22 ࣾ಺ษڧձ onozaty
2. ͳͥSpring Bootʁ • ͪΐͬͱ৮ͬͯΈͨΒɺͱͯ΋؆୯Ͱɺίʔ υॻָ͍͔ͯͯͬͨ͠ • Play Framework ΑΓෑډ͕௿͘ײͨ͡ • Springͷํ͕৘ใ͕ଟ͍ • Play΍Γ͍ͨ͠ɺScalaͰॻ͖͍͚ͨͲɺ νʔϜʹಋೖ͠Α͏ͱͳΔͱScalaΛ֮͑Δ ίετ͸ͦΕͳΓʹͰ͔͍
3. Spring Bootͱ͸ • Spring FrameworkͰΞϓϦέʔγϣϯΛ؆୯ ʹ࡞ΔͨΊͷϓϥοτϑΥʔϜతͳ΋ͷ • Spring Frameworkͷ༷ʑͳϓϩμΫτͱαʔ υύʔςΟͷϥΠϒϥϦΛ૊Έ߹Θͤͯɺ؆ ୯ʹ։ൃΛߦ͑ΔΑ͏ʹͳΔ
4. ಛ௃ • TomcatɺJettyͳͲΛ૊ΈࠐΜͰɺͦͷ··࣮ ߦՄೳͳjar(Uber JAR)ͱͯ͠࡞੒Ͱ͖Δ • Maven΍Gradleͷઃఆ͕؆୯ͳΑ͏ʹɺ͋Β ͔͡Ί૊Έ߹Θ͕ܾͤΊΒΕ͍ͯΔ • ઃఆ͸Ͱ͖Δ͚ͩࣗಈతʹղܾ͞ΕΔ
 (ઃఆͱͯ͠ॻ͘΋ͷ͸࠷খݶͰࡁΉ)
5. Spring Initializr • Spring Bootͷ਽ܗͷϓϩδΣΫτΛ࡞੒Ͱ͖ ΔWEBαʔϏε
6. Spring Initializr • ґଘ͢Δ΋ͷΛબ୒ͯ͠ɺProjectΛ࡞੒͢Δ ͱɺඞཁͳ΋ͷ͕ἧͬͨঢ়ଶͷ਽ܗ͕࡞੒͞ ΕΔ(ओʹMaven΍Gradleͷઃఆ) • STS(Spring Tool Suite)Ͱ΋ಉ͡ࣄ͕Ͱ͖Δ
7. Spring Initializr • ґଘϥΠϒϥϦͷબ୒ࢶ͸͍ͬͺ͍͋Δ • http://start.spring.io/
8. Spring Initializr
9. Spring Initializr
10. Spring Initializr
11. Spring Initializr • ͜͜ʹࡌ͖ͤΕͳ͍͘Β͍ͨ͘͞Μ • ಛʹΫϥ΢υ΍ϝοηʔδϯάɺ෼ࢄɺϚΠΫ ϩαʔϏεͱ͍ͬͨΑ͏ͳͱ͜ΖͰ໘നͦ͏ ͳ΋ͷ͕ͨ͘͞Μ
12. Hello World! DependenciesʹWebΛબ୒ͯ͠Project࡞੒
13. Hello World! EclipseͰΠϯϙʔτͯ͠ɺ“Hello World!!” Λฦ ͢ίϯτϩʔϥ௥Ճ package com.example; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.ResponseBody; @Controller public class HelloController { @RequestMapping("/") @ResponseBody public String hello(){ return "Hello World!!"; } }
14. Hello World! ࣮ߦ͢Δͱɺ૊ΈࠐΈͷTomcat্ཱ͕͕ͪͬͯ ΞΫηεՄೳʹ
15. ίʔυͷॻ͖ํ • Spring Bootࣗମ͸ϓϥοτϑΥʔϜͷΑ͏ͳ ΋ͷͳͷͰɺίʔυࣗମ͸Springͷ֤ϓϩμΫ τͷػೳΛར༻ͯ͠ॻ͘ • WebΞϓϦέʔγϣϯͳΒ͹Spring MVCͱ ͍ͬͨײ͡ • ༷ʑͳϓϩμΫτʹΑͬͯɺ݁Ռతʹϑϧε λοΫͳϑϨʔϜϫʔΫΛߏ੒͍ͯ͠ΔΑ͏ ͳΠϝʔδ
16. ૊Έ߹ΘͤΛ؆୯ʹ • ༷ʑͳϓϩμΫτΛSpring Bootͱ͍͏ϓϥο τϑΥʔϜ্Ͱ؆୯ʹར༻Ͱ͖Δ • ઃఆ͸΄ͱΜͲࣗಈతʹղܾ • ቕΓͣΒ͍ • αϯϓϧ͕๛෋
 https://github.com/spring-projects/spring-boot/tree/ master/spring-boot-samples
17. AutoConfigure • Spring Boot͕ఏڙ͢ΔAutoConfigureͱ͍ͬ ͨ࢓૊ΈʹΑΓɺઃఆϑΝΠϧΛॻ͔ͳͯ͘ ΋ࣗಈతʹඞཁͳઃఆͳͲ͕ߦΘΕΔ • ར༻͍ͨ͠ػೳΛґଘϥΠϒϥϦʹ௥Ճ͢Δ ͚ͩͰɺͦͷػೳͷAutoConfigure͕༗ޮʹ ͳΔ
18. AutoConfigureͷྫ • Flyway͕ґଘϥΠϒϥϦͱͯ͠ઃఆ͞Ε͍ͯ Ε͹ɺΞϓϦέʔγϣϯىಈ࣌ʹFlywayͷϚ ΠάϨʔγϣϯ͕࣮ߦ • H2͕ґଘϥΠϒϥϦͱͯ͠ઃఆ͞Ε͍ͯΕ ͹ɺdatasourceͷσϑΥϧτઃఆ͕H2ͷΦϯ ϝϞϦDBʹ
19. DBΞΫηε • ͍Ζ͍Ζબ୒ࢶ͕͋Δ͕ɺͦΕΒ΋؆୯ʹ࢖ ͑ΔΑ͏ʹͳ͍ͬͯΔ • Spring JDBC • Spring DATA JPA • MyBatis SpringɹͳͲͳͲ
20. Spring JDBC • spring-boot-starter-jdbc ΛґଘϥΠϒϥϦʹ ௥Ճ͢Δͱ࢖͑Δ • JDBCΛ࢖͍΍ͨ͘͢͠΋ͷ͕ఏڙ͞ΕΔ (Apache commonsͷDbUtilsʹࣅͯΔ)
21. Spring JDBC @Repository public class CustomerRepository { @Autowired private NamedParameterJdbcTemplate jdbcTemplate; public List<Customer> findAll() { return jdbcTemplate.query( "SELECT * FROM customers ORDER BY id", new BeanPropertyRowMapper<Customer>(Customer.class)); } public void update(Customer customer) { jdbcTemplate.update( "UPDATE customers SET name = :name, address = :address WHERE id = :id", new BeanPropertySqlParameterSource(customer)); } }
22. Spring DATA JPA • spring-boot-starter-data-jpa ΛґଘϥΠϒϥ Ϧʹ௥Ճ͢Δͱ࢖͑Δ • JPAΛ࢖ͬͨσʔλϕʔεΞΫηεͷػೳΛఏ ڙ͢Δ • JPAͷEntityManagerΛ࢖ΘͣʹɺInterfaceͷ ఆٛͷΈͰ֤छػೳ͕ఏڙ͞ΕΔ
23. Spring DATA JPA @Entity @Table(name = "customers") @Data @AllArgsConstructor @NoArgsConstructor public class Customer { @Id @GeneratedValue private Integer id; private String name; private String address; }
24. Spring DATA JPA @Service public class CustomerService { @Autowired private CustomerRepository customerRepository; public List<Customer> findAll() { return customerRepository.findAll(); } public List<Customer> findByName(String name) { return customerRepository.findByName(name); } public Customer create(Customer customer) { return customerRepository.save(customer); } @Repository public interface CustomerRepository extends JpaRepository<Customer, Integer> { public List<Customer> findByName(String name); }
25. REST APIΛ࡞ͬͯΈΔ • ސ٬৘ใͷCRUDΛఏڙ͢ΔAPI • RDBMSɿH2 • σʔλΞΫηεɿSpring DATA JPA • FlywayͰDBϚΠάϨʔγϣϯ • SwaggerͰಈ࡞֬ೝ
26. σϞ • ίʔυ͸Լه • https://github.com/onozaty/spring-boot-sandbox/tree/ master/spring-boot-demo-20161222
27. ͓ΘΓʹ • Spring ʹ͸ɺଞʹ΋ศརͳϓϩμΫτ͕ͨ͘ ͞Μ͋ΓɺͦΕΒΛ૊Έ߹Θͤͯ࢖͏͜ͱʹ ΑΓɺੜ࢈ੑ͚ͩͰͳ͘ɺΞϓϦέʔγϣϯ ͷ࣭΋͋͛ΒΕΔ΋ͷͱࢥ͍ͬͯ·͢ • ͱͯ΋ָ͍͠ͷͰɺͥͻ৮ͬͯΈ͍ͯͩ͘͞ʂ