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ܾࡁαʔϏεͷSpring Bootͷ όʔδϣϯΛ2ܥʹ্͛ͨ࿩ JSUGษڧձ 2020೥ͦͷ2 ίΠχʔגࣜձࣾɹ಺ཱྑհ @b1a9idps

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ࣗݾ঺հ ໊લ ಺ཱ ྑհʢ͏ͪͨͯ Γΐ͏͚͢ʣ ॴଐ ίΠχʔגࣜձࣾ Fashion Charity Project Triangle Sauce ࠷ۙͷ࢓ࣄ Reactॻ͍ͨΓɺՃໍళ͞Μʹخ͍͠ػೳ࣮૷ͨ͠Γ

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Spring Boot 2.0.0͕ϦϦʔε͞Εͨͷ͸͍ͭʁ 1. 2018೥3݄1೔ 2. 2018೥8݄1೔ 3. 2019೥2݄1೔

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ਖ਼ղɿ1.2018೥3݄1೔

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ΞδΣϯμ • લஔ͖ • όʔδϣϯΞοϓ࡞ۀɹ • Gradle • Spring Cloud Config Server • Spring Web • Spring Data • Spring Data JPA • Flyway • Testing • Configuration Property Binding • ·ͱΊ

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※ Spring Boot 2.0.xͷ࿩͕ϝΠϯͰ͕͢
 ࠓ೥ͷ1QͰEOLͳͷͰૣΊʹ࠷৽όʔδϣϯ΁ʂ

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ΞδΣϯμ • લஔ͖ • όʔδϣϯΞοϓ࡞ۀɹ • Gradle • Spring Cloud Config Server • Spring Web • Spring Data • Spring Data JPA • Flyway • Testing • Configuration Property Binding • ·ͱΊ

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CoineyͷγεςϜߏ੒ • admin-api • ࣾ಺ઐ༻αʔϏε͕ݺͿAPI • web-api • Ճໍళ͕ར༻͢ΔWeb؅ཧαʔ Ϗε͕ݺͿAPI • mobile-api • Ճໍళ͕ར༻͢ΔϞόΠϧΞϓ Ϧ͕ݺͿAPI • partner-api • ύʔτφʔاۀ؅ཧʹؔ͢Δ API • antisocial-force- checker • ൓ࣾνΣοΫʹؔ͢ΔAPI • emoney-api • ిࢠϚωʔʹؔ͢ΔAPI ઃఆϑΝΠϧ͸Cloud ConfigͰ؅ཧ

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ϨϙδτϦͱόʔδϣϯ Spring Boot Gradle આ໌ coiney-api 1.5.18 3.5.1 ϝΠϯͷAPI ʢadmin-api, web-api, mobile- apiʣ coiney-api- config-server 1.5.9 2.9 Spring Cloud Config Server coiney-emoney 1.5.16 3.5.1 ిࢠϚωʔܾࡁʹؔ͢ΔAPI antisocial- force-checker 1.4.1 3.3 ൓ࣾνΣοΫʹؔ͢ΔAPI Spring Boot 2.0.x͸Gradle 4+

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ϦϦʔε·ͰͷྲྀΕ ໿൒೥͔͔ͬͨ

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ΞδΣϯμ • લஔ͖ • όʔδϣϯΞοϓ࡞ۀɹ • Gradle • Spring Cloud Config Server • Spring Web • Spring Data • Spring Data JPA • Flyway • Testing • Configuration Property Binding • ·ͱΊ

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Gradle 4.xͷ࠷৽ʹ͢Δ // build.gradle wrapper { gradleVersion = "4.10.2" distributionType = Wrapper.DistributionType.ALL } $ ./gradlew wrapper // Gradle 5.0Ͱඇޓ׵ʹͳΔػೳΛར༻͍ͯ͠Δͱϝοηʔδ͕ग़ྗ͞ΕΔ // —-warning-mode allΦϓγϣϯΛ࢖͏ͱৄࡉΛ֬ೝͰ͖Δ $ ./gradlew build —-warning-mode all

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build.gradleͷॻ͖׵͑ dependencies { - compile "com.fasterxml.jackson.dataformat:jackson-dataformat-csv" + implementation "com.fasterxml.jackson.dataformat:jackson-dataformat-csv" } Gradle4.7͔ΒcompileͳͲ͕ඇਪ঑ʹ 4.6·Ͱ 4.7Ҏ߱ compile implementation runtime runtimeOnly testCompile testImplementation testRuntime testRuntimeOnly

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implementationʹॻ͖׵͑Δͱ // fooϞδϡʔϧ dependencies { implementation "com.fasterxml.jackson.dataformat:jackson-dataformat-csv" } // barϞδϡʔϧ dependencies { implementation project (":foo") } barϞδϡʔϧʹ͸jackson-dataformat-csv͕఻೻͠ͳ͍

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ϚϧνϞδϡʔϧߏ੒ਏ͔ͬͨ

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ґଘؔ܎͕͙ͪΌ͙ͪΌ • ૒ํ޲ʹґଘ͍ͯͨ͠ • a-service͕ґଘ͍ͯ͠Δb-service͕ґଘ ͍ͯ͠Δc-service͕ґଘ͍ͯ͠ΔϥΠϒϥ ΠΛ࢖͍ͬͯΔΈ͍ͨͳ͜ͱ͕ى͖͍ͯͨ ͜ΕΛ៉ྷʹ͢Δͷ͕Ұ൪ਏ͔ͬͨ...

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ґଘؔ܎Λ៉ྷʹͯ͠ӡ༻ํ਑Λܾఆ • implementationΛਪ঑ɻ఻೻͢Δapiͷར༻͸ඇਪ঑ • ֤Ϟδϡʔϧͷbuild.gradleͰ͸όʔδϣϯࢦఆͤͣɺϓϩδΣΫτ σΟϨΫτϦ௚Լͷbuild.gradleͰϥΠϒϥϦ౳ͷόʔδϣϯΛҰݩ؅ ཧ • Spring Boot͕ґଘ͍ͯ͠ΔϥΠϒϥϦ͸Spring Bootʹ೚ͤΔ ʢLombok͸ྫ֎ʣ

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ΞʔΧΠϒϑΝΠϧͷ໊લΛมߋ͢Δ - jar.baseName=hoge + archivesBaseName=hoge Gradle5.1͔Β

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࣮ߦՄೳJar࡞੒λεΫͷมߋ // Spring BootͷGradleϓϥάΠϯͷjarλεΫ΍warλεΫ͸ݺͼग़͞Εͳ͘ͳͬͨ - bootRepackage {} + bootJar {}

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ΞδΣϯμ • લஔ͖ • όʔδϣϯΞοϓ࡞ۀɹ • Gradle • Spring Cloud Config Server • Spring Web • Spring Data • Spring Data JPA • Flyway • Testing • Configuration Property Binding • ·ͱΊ

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औಘ͢Δִ࣌ؒؒΛઃఆՄೳʹͳͬͨ // લͷϦΫΤετ͔Β60ඵޙҎ߱ͷϦΫΤετͰऔಘ // σϑΥϧτ͸0ඵɻʢϦΫΤετͷ౓ʹऔಘʣ spring.cloud.config.server.git.refresh-rate=60 Git Refresh Rate You can control how often the config server will fetch updated configuration data from your Git backend by using spring.cloud.config.server.git.refreshRate. The value of this property is specified in seconds. By default the value is 0, meaning the config server will fetch updated configuration from the Git repo every time it is requested. [ެࣜυΩϡϝϯτΑΓൈਮ] Spring Cloud Config Server 2.0.2͔Β

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ΞδΣϯμ • લஔ͖ • όʔδϣϯΞοϓ࡞ۀɹ • Gradle • Spring Cloud Config Server • Spring Web • Spring Data • Spring Data JPA • Flyway • Testing • Configuration Property Binding • ·ͱΊ

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@NotBlank, @NotEmpty, @Email͕ඇਪ঑ • 6.0.0.Final͔Βඇਪ঑ʹͳͬͨ • javax-validation͕ఏڙ͢ΔΞϊςʔγϣϯΛ࢖͏ - import org.hibernate.validator.constraints.NotBlank; + import javax.validation.constraints.NotBlank;

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Spring Boot Starter Json • JacksonͷͨΊͷAuto-configuration͕ఏڙ͞ΕΔ • ࣍ͷϥΠϒϥϦؚ͕·Ε͍ͯΔ • jackson-databind • jackson-datatype-jdk8 • jackson-datatype-jsr310 • jackson-module-parameter-names

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WebMvcConfigurerAdapter.class͕ඇਪ঑ • Spring 5͔ΒJava8+ʹͳΓɺdefaultϝιου͕࢖͑ΔΑ͏ʹͳͬͨ ͨΊ • WebMvcConfigurer.javaΛ࣮૷͢Δ public class WebMvcConfig extends WebMvcConfigurerAdapter {} public class WebMvcConfig implements WebMvcConfigurer {}

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ύοέʔδมߋ - import org.springframework.boot.autoconfigure.web.ErrorAttributes; + import org.springframework.boot.web.servlet.error.ErrorAttributes; - import org.springframework.boot.autoconfigure.web.ErrorController; + import org.springframework.boot.web.servlet.error.ErrorController; Spring Boot 2ʢSpring 5ʣ͔ΒServletͱReactiveʹ෼͔ΕͨͨΊ

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HtmlUtils.htmlEscape()ͷ࣮૷มߋ // 4.3.x public static String htmlEscape(String input, String encoding) { Assert.notNull(encoding, "Encoding is required"); if (input == null) { return null; } // 5.0.x public static String htmlEscape(String input, String encoding) { Assert.notNull(input, "Input is required"); Assert.notNull(encoding, "Encoding is required"); input͕nullͷͱ͖ExceptionΛ౤͛ΔΑ͏ʹͳͬͨ

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ΞδΣϯμ • લஔ͖ • όʔδϣϯΞοϓ࡞ۀɹ • Gradle • Spring Cloud Config Server • Spring Web • Spring Data • Spring Data JPA • Flyway • Testing • Configuration Property Binding • ·ͱΊ

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ίωΫγϣϯϓʔϧͷมߋ • σϑΥϧτͷίωΫγϣϯϓʔϧ͕Tomcat͔ΒHikariCPʹͳͬͨ

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DataSourceΧελϚΠζ࣌ͷ஫ҙ఺ • HikariCPΛར༻ͯ͠DataSourceΛΧελϚΠζ͢Δࡍ͸ɺϓϩύςΟ ΛurlͰͳ͘jdbc-urlʹ͢Δ // application.properties app.datasource.jdbc-url=jdbc:mysql://localhost/test app.datasource.username=dbuser app.datasource.password=dbpass app.datasource.maximum-pool-size=30 @Bean @ConfigurationProperties(prefix = "app.datasource") public HikariDataSource dataSource() { return DataSourceBuilder.create().type(HikariDataSource.class).build(); }

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ίϯετϥΫλ͕ඇਪ঑ - new PageRequest(1, 10); + PageRequest.of(1, 10); - new Sort(orders); + Sort.by(orders); ίϯετϥΫλ͕ඇਪ঑ʹͳͬͨɻ2.2.0͔ΒpublicίϯετϥΫλ͡Όͳ͘ͳΔ

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͓·͚ɿAWS X-RayͷSQLτϨʔεͰHikariCP ͸࢖͑ͳ͍

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tomcat-jdbcͷJdbcInterceptor͕ඞཁ dependencies { implementation("org.springframework.boot:spring-boot-starter-data-jpa") { exclude group: 'com.zaxxer' } implementation "org.apache.tomcat:tomcat-jdbc" }

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ΞδΣϯμ • લஔ͖ • όʔδϣϯΞοϓ࡞ۀɹ • Gradle • Spring Cloud Config Server • Spring Web • Spring Data • Spring Data JPA • Flyway • Testing • Configuration Property Binding • ·ͱΊ

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JpaRepository.javaͷ࣮૷มߋ // ϝιουͷ໭Γ஋ʹOptional͕࢖͑ΔΑ͏ʹͳͬͨ - User fidyByName(String name); + Optional findByName(String name); // ϝιου໊ͷมߋʢҰ෦ʣ - List save(Iterable entities); + List saveAll(Iterable entities);

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ΞδΣϯμ • લஔ͖ • όʔδϣϯΞοϓ࡞ۀɹ • Gradle • Spring Cloud Config Server • Spring Web • Spring Data • Spring Data JPA • Flyway • Testing • Configuration Property Binding • ·ͱΊ

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Flyway • σʔλϕʔεϚΠάϨʔγϣϯϥΠϒϥϦ • Spring Bootͱͷ࿈ܞ΋؆୯ʹͰ͖Δ

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FlywayΛมߋͳ͠Ͱ3 -> 5΁ 2019-09-11 03:43:15.152 ERROR --- Application startup failed org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'flywayInitializer' defined in class path resource [org/springframework/boot/autoconfigure/flyway/FlywayAutoConfiguration$FlywayConfiguration.class]: Invocation of init method failed; nested exception is org.flywaydb.core.api.FlywayException: Validate failed: Migration checksum mismatch for migration 1 -> Applied to database : 1750005324 -> Resolved locally : -558371367 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.jav a:1583) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java: 545) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java: 482) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java: 230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:296) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1076) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java: 851) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541) at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:122) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:761) at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:371) at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1186) at org.springframework.boot.SpringApplication.run(SpringApplication.java:1175) at com.b1a9idps.sample.view.Application.main(Application.java:19) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ϚΠάϨʔγϣϯࣦഊ

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Flyway 3 -> 5ͷओͳมߋ఺ Important note for users upgrading from Flyway 3.x: This release no longer supports a schema history table upgrade from Flyway 3.x. You must upgrade to Flyway 4.2.0 first before upgrading to Flyway 5.0.0. 3 -> 4 νΣοΫαϜͷܭࢉํ๏ͷมߋɻνΣοΫαϜܭࢉ࣌ʹɺվߦίʔυΛແࢹ͢ΔΑ͏ʹͳͬͨɻ 4 -> 5 FlywayͷϝλσʔλΛ؅ཧ͢Δςʔϒϧ໊͕ schema_version͔Βflyway_schema_historyʹͳͬͨɻ

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όʔδϣϯΞοϓखॱ 1. Flyway 4ܥʹ্͛Δ 2. ΞϓϦέʔγϣϯΛىಈʢϚΠάϨʔγϣϯ࣮ߦʣ 3. Flyway 5ܥʹ্͛ΔʢBoot 2.0.9.RELEASEʹʣ 4. ΞϓϦέʔγϣϯΛىಈʢϚΠάϨʔγϣϯ࣮ߦʣ

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Flyway4ܥʹ্͛ͯىಈ dependencies { compile "org.flywaydb:flyway-core:4.2.0" } $ gradle bootRun ===== 2019-09-11 03:43:14.467 INFO --- Upgrading metadata table `sample`.`schema_version` to the Flyway 4.0 format ... 2019-09-11 03:43:15.329 INFO --- Repairing metadata for version 1 (Description: CREATE TABLE SAMPLE DATA, Checksum: -558371367) ... 2019-09-11 03:43:15.349 INFO --- Repairing metadata for version 2 (Description: MODIFY SAMPLE DATA LENGTH, Checksum: -1031537806) ... 2019-09-11 03:43:15.370 INFO --- Repairing metadata for version 3 (Description: SAMPLE DATA ADD INDEX, Checksum: 194652164) ... 2019-09-11 03:43:15.412 INFO --- Metadata table schema_version successfully upgraded to the Flyway 4.0 format. ॳճىಈ࣌ʹطଘͷschema_versionςʔϒϧΛΞοϓάϨʔυͯ͘͠ΕΔ

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Flyway5ܥʹ্͛ͯىಈ // ϝλςʔϒϧ໊Λมߋ spring.flyway.table=schema_version

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ϝλςʔϒϧ໊Λมߋ͠ͳ͔ͬͨ৔߹ 2019-09-25 23:05:33.882 WARN --- Could not find schema history table `sample`.`flyway_schema_history`, but found `sample`.`schema_version` instead. You are seeing this message because Flyway changed its default for flyway.table in version 5.0.0 to flyway_schema_history and you are still relying on the old default (schema_version). Set flyway.table=schema_version in your configuration to fix this. This fallback mechanism will be removed in Flyway 6.0.0. 6ܥ͔ΒϑΥʔϧόοΫػೳ͕ͳ͘ͳΔ͔Βςʔϒϧ໊มߋ͠ͳΑͱ஫ҙ͞ΕΔ

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ΞδΣϯμ • લஔ͖ • όʔδϣϯΞοϓ࡞ۀɹ • Gradle • Spring Cloud Config Server • Spring Web • Spring Data • Spring Data JPA • Flyway • Testing • Configuration Property Binding • ·ͱΊ

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ϥΠϒϥϦ౳ͷมߋ఺ JUnit JUnit 5͕࢖͑ΔΑ͏ʹͳ͕ͬͨɺSpring Boot Starter Test͸JUnit 4ɻ Spring Boot 2.2.x͔ΒJUnit 5͕σϑΥϧτʹͳͬͨɻ Mockito 1ܥ͔Β2ܥʹͳͬͨ AssertJ 2ܥ͔Β3ܥʹͳͬͨ

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ύοέʔδมߋ - import org.mockito.runners.MockitoJUnitRunner; + import org.mockito.junit.MockitoJUnitRunner; - import org.mockito.Matchers.*; + import org.mockito.ArgumentMatchers.*;

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ෆཁͳελϒͷ࡟আ @ExtendWith(MockitoExtension.class) class StubTest { @Mock Hoge hoge; @Test void test() { when(hoge.getName()).thenReturn("uchitate"); } class Hoge { String getName() { return "";} } } Unnecessary stubbings detected. Clean & maintainable test code requires zero unnecessary code. Following stubbings are unnecessary (click to navigate to relevant line of code): 1. -> at com.coiney.StubTest.test(StubTest.java:18) Please remove unnecessary stubbings or use 'lenient' strictness. More info: javadoc for UnnecessaryStubbingException class. org.mockito.exceptions.misusing.UnnecessaryStubbingException: Unnecessary stubbings detected. Clean & maintainable test code requires zero unnecessary code. Following stubbings are unnecessary (click to navigate to relevant line of code): 1. -> at com.coiney.StubTest.test(StubTest.java:18) Please remove unnecessary stubbings or use 'lenient' strictness. More info: javadoc for UnnecessaryStubbingException class. ग़ྗ͞Εͨߦ൪߸ͷίʔυΛ࡟আ͢Δ

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ΞδΣϯμ • લஔ͖ • όʔδϣϯΞοϓ࡞ۀɹ • Gradle • Spring Cloud Config Server • Spring Web • Spring Data • Spring Data JPA • Flyway • Testing • Configuration Property Binding • ·ͱΊ

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Spring Boot 2.2.4ͷ࿩Ͱ͢

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EnvironmentΠϯλʔϑΣʔε͔ΒͷόΠϯυ͕Մೳʹ // Πϯελϯε΁ͷόΠϯυ JsugPropsBinder binder = new JsugPropsBinder(); Binder.get(environment) .bind("jsug.props-instance", Bindable.ofInstance(binder)) .get(); // ೚ҙͷΫϥε΁ͷόΠϯυ Binder.get(environment) .bind("jsug.props-simple", Bindable.of(JsugPropsBinder.class)) .get(); // List΁ͷόΠϯυ Binder.get(environment) .bind("jsug.props", Bindable.listOf(JsugPropsBinder.class)) .get(); public class JsugPropsBinder { private List speakerNames; private String theme; @DateTimeFormat(iso = DATE) private LocalDate date; }

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ઃఆϑΝΠϧͰkey͸جຊέόϒέʔεͰॻ͘ PropertiesɺYamlϑΝΠϧͱ΋ॻ͖ํ͸1ܥͱมΘΒͳ͍ɻ @ConfigurationPropertiesͷprefixͷ஋͸ඞͣέόϒέʔεͰॻ͘ɻ

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ProfileͰόΠϯυ͢Δ஋Λมߋ͢Δ jsug: props: list: - name: uchitate theme: SpringBoot2 --- spring: profiles: dev jsug: props: list: - name: uchitate-dev theme: SpringBoot2-dev @ConfigurationProperties("jsug.props") @ConstructorBinding public class JsugProps { private final List list; public static class Jsug { private String name; private String theme; } }

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ProfileͰόΠϯυ͢Δ஋Λมߋ͢Δ // profile=defaultͷͱ͖ { "list": [ { "name": "uchitate", "theme": "SpringBoot2" } ] } // profile=devͷͱ͖ { "list": [ { "name": "uchitate-dev", "theme": "SpringBoot2-dev" } ] } ௥Ճ͡Όͳ্ͯ͘ॻ͖͞ΕΔ

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ΞδΣϯμ • લஔ͖ • όʔδϣϯΞοϓ࡞ۀɹ • Gradle • Spring Cloud Config Server • Spring Web • Spring Data • Spring Data JPA • Flyway • Testing • Configuration Property Binding • ·ͱΊ

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·ͱΊ • ެࣜυΩϡϝϯτΛಡΉ͜ͱ͕ॏཁ • ஍ຯͳ࡞ۀ͕ଟ͍ • ͔ͳΓษڧʹͳΔ • ϓϧϦΫΛখग़͠ʹ͢Δͷ͕Αͦ͞͏ • GradleͱLombokͷόʔδϣϯ૬ੑ໰୊ͭΒ͍

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ͥͻnote΋ಡΜͰ͍ͩ͘͞ https://note.com/b1a9idps/n/n0b9ca2ee57a2

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͓ΘΓ