「はじめてのSpring Boot」のサポートページです。

このページでサンプルコードと正誤表を管理します。書籍の内容に関する間違いの指摘等はIssuesかPull Requestでお願いします。

また、疑問やコメントはTwitterでハッシュタグ「#hajiboot」をつけてツイートしていただければ極力お答えします。気軽にツイートしてください。

本の内容がSpring Boot 1.2や1.3では動かないという場合もサポートいたしますので、Isssueで報告お願いいたします。 回答の保証はありませんが、Spring Bootに関するよろず質問でもOKです。

*1 ... チェック例外の場合はロールバックされません(重要)

「はじめてのSpring Boot」出版後、Spring Boot 1.2がリリースされました。リリースノートはこちらを参照してください。 代表的な変更点は筆者の発表資料にもまとまっています。

また、Spring Boot 1.2ではSpring Frameworkのバージョンが4.1になりました。Spring Framework 4.1の新機能はこちらの発表資料を参照してください。

Spring Boot 1.2を使う場合は以下のように、spring-boot-starter-parentのバージョンを変更するだけで良いです。

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>1.2.1.RELEASE</version>
</parent>

ここではSpring Boot 1.2の変更で本書に影響する箇所について紹介します。

新たに@SpringBootApplicationが導入されました。これは@EnableAutoConfiguration+ @ComponentScan+ @Configurationを1つにまとめたものです。

本書ではAppクラスに@EnableAutoConfigurationと @ComponentScanをつけていましたので、この2つの代わりに@SpringBootApplicationをつけるだけで良くなります。

CharacterEncodingFilterによるUTF-8の設定が自動で行われるようになりました。3.3以降でAppConfigクラスに設定していた以下の内容は省略可能になります。

@Order(Ordered.HIGHEST_PRECEDENCE)
@Bean
CharacterEncodingFilter characterEncodingFilter() {
    CharacterEncodingFilter filter = new CharacterEncodingFilter();
    filter.setEncoding("UTF-8");
    filter.setForceEncoding(true);
    return filter;
}

NekoHTMLを使うことで、XHTMLではないHTML5(Legacy HTML5と呼ばれています)を扱えます。

pom.xmlに以下の依存関係を追加して、

<dependency>
    <groupId>net.sourceforge.nekohtml</groupId>
    <artifactId>nekohtml</artifactId>
    <version>1.9.21</version>
</dependency>

application.ymlに以下の設定を行ってください。

spring.thymeleaf.mode: LEGACYHTML5

Spring Boot1.1ではH2(1.3.176) + Spring Data JPA (Hibernate) + Log4JDBCの組み合わせで以下のようなエラーログが出力されます。

2014-12-09 13:55:49.711 ERROR 6512 --- [o-auto-1-exec-5] jdbc.sqltiming                           : 15. PreparedStatement.isWrapperFor(java.sql.CallableStatement)

org.h2.jdbc.JdbcSQLException: 機能はサポートされていません: "isWrapperFor"
Feature not supported: "isWrapperFor" [50100-176]
        at org.h2.message.DbException.getJdbcSQLException(DbException.java:344)
        at org.h2.message.DbException.get(DbException.java:178)
        at org.h2.message.DbException.get(DbException.java:154)
        at org.h2.message.DbException.getUnsupportedException(DbException.java:215)
        at org.h2.message.TraceObject.unsupported(TraceObject.java:395)
        at org.h2.jdbc.JdbcStatement.isWrapperFor(JdbcStatement.java:1076)
        at net.sf.log4jdbc.PreparedStatementSpy.isWrapperFor(PreparedStatementSpy.java:1142)
        at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.isTypeOf(ResultSetReturnImpl.java:99)
        at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:70)
        at org.hibernate.loader.Loader.getResultSet(Loader.java:2065)
        at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1862)
        at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:1838)
        at org.hibernate.loader.Loader.doQuery(Loader.java:909)
        at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:354)
        at org.hibernate.loader.Loader.doList(Loader.java:2553)
        at org.hibernate.loader.Loader.doList(Loader.java:2539)
        at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2369)
        at org.hibernate.loader.Loader.list(Loader.java:2364)
        at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:496)
        at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:387)
        at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:231)
        at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1264)
        at org.hibernate.internal.QueryImpl.list(QueryImpl.java:103)
        at org.hibernate.jpa.internal.QueryImpl.list(QueryImpl.java:573)
        at org.hibernate.jpa.internal.QueryImpl.getResultList(QueryImpl.java:449)
        at org.springframework.data.jpa.repository.query.JpaQueryExecution$PagedExecution.doExecute(JpaQueryExecution.java:153)
        at org.springframework.data.jpa.repository.query.JpaQueryExecution.execute(JpaQueryExecution.java:59)
        at org.springframework.data.jpa.repository.query.AbstractJpaQuery.doExecute(AbstractJpaQuery.java:97)
        at org.springframework.data.jpa.repository.query.AbstractJpaQuery.execute(AbstractJpaQuery.java:88)
        at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.doInvoke(RepositoryFactorySupport.java:384)
        at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.invoke(RepositoryFactorySupport.java:344)
        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179)
        at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:98)
        (以下略)

以下のためです。

• HibernateがJDBC 4.0で追加されたisWrapperForを呼んでいる
• H2(1.3.176)がisWrapperForを実装していない
• Log4JBDCがJDBCのエラーをログ出力する
• (HibernateがisWrapperForがサポートされていないという例外を握りつぶす)

普段から起こっている事象ですが、Log4JBDCによって顕在化してしまっています。

無視しても問題ないのですが、精神衛生上よろしくないので修正したいという場合は、H2のバージョンをあげてisWrapperForがサポートされているものを使えばよいです。

H2のバージョンはspring-boot-starter-parentで管理されており、上書きするにはプロジェクトのpom.xmlにバージョンプロパティを指定すればよいです。

pom.xmlを以下のように修正してください。

<properties>
    <java.version>1.8</java.version>
    <h2.version>1.4.182</h2.version><!-- ここ追加 -->
</properties>

ちなみにSpring Boot 1.2では始めからH2 1.4.182が使われるようになっています。

なお、このバージョンのH2を使用すると、Windows上でjdbc:h2:file:/tmp/testdbというURLの指定が出来ず、jdbc:h2:file:c:/tmp/testdbというようにドライブレターを付ける必要があります。

この挙動が嫌な場合(jdbc:h2:file:/tmp/testdbのまま使いたい場合)、実行時に-Dh2.implicitRelativePath=trueを付けてください。毎回このプロパティを指定するのが面倒な場合は、mainメソッドで以下のように実装してください

public static void main(String[] args) {
    if (System.getProperty("h2.implicitRelativePath") == null) {
        // keep compatibility with H2 1.3
        // prevent http://www.h2database.com/javadoc/org/h2/api/ErrorCode.html#c90011
        System.setProperty("h2.implicitRelativePath", "true");
    }
    SpringApplication.run(App.class, args);
}

H2同様にPostgreSQL + Hibernateでも同様のエラーログが出力されます。

2014-12-09 20:41:13.753  INFO 5484 --- [           main] org.hibernate.dialect.Dialect            : HHH000400: Using dialect: org.hibernate.dialect.PostgreSQLDialect
2014-12-09 20:41:13.783 ERROR 5484 --- [           main] jdbc.sqltiming                           : 1. Connection.createClob()

org.postgresql.util.PSQLException: 方法 org.postgresql.jdbc4.Jdbc4Connection.createClob() はまだ装備されていません。
        at org.postgresql.Driver.notImplemented(Driver.java:753)
        at org.postgresql.jdbc4.AbstractJdbc4Connection.createClob(AbstractJdbc4Connection.java:41)
        at org.postgresql.jdbc4.Jdbc4Connection.createClob(Jdbc4Connection.java:21)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:483)
        at org.springsource.loaded.ri.ReflectiveInterceptor.jlrMethodInvoke(ReflectiveInterceptor.java:1270)
        at org.apache.tomcat.jdbc.pool.ProxyConnection.invoke(ProxyConnection.java:126)
        at org.apache.tomcat.jdbc.pool.JdbcInterceptor.invoke(JdbcInterceptor.java:109)
        at org.apache.tomcat.jdbc.pool.DisposableConnectionFacade.invoke(DisposableConnectionFacade.java:80)
        at com.sun.proxy.$Proxy52.createClob(Unknown Source)
        at net.sf.log4jdbc.ConnectionSpy.createClob(ConnectionSpy.java:496)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:483)
        at org.springsource.loaded.ri.ReflectiveInterceptor.jlrMethodInvoke(ReflectiveInterceptor.java:1270)
        at org.hibernate.engine.jdbc.internal.LobCreatorBuilder.useContextualLobCreation(LobCreatorBuilder.java:112)
        at org.hibernate.engine.jdbc.internal.LobCreatorBuilder.<init>(LobCreatorBuilder.java:63)
        at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:192)
        (略)

2014-12-09 20:41:13.791  INFO 5484 --- [           main] o.h.e.jdbc.internal.LobCreatorBuilder    : HHH000424: Disabling contextual LOB creation as createClob() method threw error : java.lang.reflect.InvocationTargetException

これも実際は問題ないのですが、Log4JDBCによってエラーが見えてしまっています。

最新の9.3-1102-jdbc41で試してもまだ実装されていませんでした。

<dependency>
    <groupId>org.postgresql</groupId>
    <artifactId>postgresql</artifactId>
    <version>9.3-1102-jdbc41</version>
</dependency>

2014-12-09 20:48:53.675 ERROR 7484 --- [           main] jdbc.sqltiming                           : 1. Connection.createClob()

java.sql.SQLFeatureNotSupportedException: org.postgresql.jdbc4.Jdbc4Connection.createClob() メソッドはまだ実装されていません。
        at org.postgresql.Driver.notImplemented(Driver.java:729)
        at org.postgresql.jdbc4.AbstractJdbc4Connection.createClob(AbstractJdbc4Connection.java:51)
        at org.postgresql.jdbc4.Jdbc4Connection.createClob(Jdbc4Connection.java:21)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

ただ、書籍で扱っているPostgreSQL JDBCドライバのバージョンは9.0-801.jdbc4と古く、 https://devcenter.heroku.com/articles/heroku-postgresql#version-support-and-legacy-infrastructure\ の通り、今はHeroku側もデフォルトでPostgreSQLのバージョンが9.3なので、上げた方が良いですね。

こちら参照。

Lombokのバージョン1.16(書籍では1.14を使用)にすると3章以降のCustomerRestControllerのレスポンスJSONからフィールドが消えてしまうようです。

1.16を使う場合は、以下のようにCustomerクラスにSerializableをつけてください。

public class Customer implements Serializable {
   // ...
}

なお、本書では省略しましたが、一般的には永続化や複製する場合などを考え、EntityにはSerializableをつけます。 1.16に限らず、Serializableをつけたほうが良いです。

JDK 1.8.0_40以上では本書で指定したSpring Loadedが動きません。 spring-projects/spring-loaded#108

1.2.2以上にバージョンアップするか、springloadedの定義を削除してください。

• バージョンアップ

  <plugin>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-maven-plugin</artifactId>
      <dependencies>
          <dependency>
              <groupId>org.springframework</groupId>
              <artifactId>springloaded</artifactId>
              <version>1.2.3.RELEASE</version>
          </dependency>
      </dependencies>
   </plugin>

• 削除

  <plugin>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-maven-plugin</artifactId>
      <!-- ここから削除
      <dependencies>
          <dependency>
              <groupId>org.springframework</groupId>
              <artifactId>springloaded</artifactId>
              <version>1.2.1.RELEASE</version>
          </dependency>
      </dependencies>
      ここまで削除 -->
   </plugin>

Spring Boot 1.2.3にすると、AppConfigに二つ定義したDataSourceが原因で

No qualifying bean of type [javax.sql.DataSource] is defined: expected single matching bean but found 2: realDataSource,dataSource

というエラーメッセージが出力され、アプリケーションの起動に失敗します (1.2.2では問題ない)。

.   ____          _            __ _ _

/\ / ___'_ __ _ _(_)_ __ __ _

( ( )___ | '_ | '_| | '_ / _` | \/ ___)| | | | | || (_| | ) ) ) )

' .__ _| / / / /

=======================|___/=/_/_/_/

:: Spring Boot :: (v1.2.3.RELEASE)

(略) 2015-05-20 02:56:33.804 WARN 4027 --- [ main] ationConfigEmbeddedWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private javax.sql.DataSource org.springframework.boot.autoconfigure.orm.jpa.JpaBaseConfiguration.dataSource; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'realDataSource' defined in class path resource [com/example/AppConfig.class]: Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSourceInitializer': Invocation of init method failed; nested exception is org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [javax.sql.DataSource] is defined: expected single matching bean but found 2: realDataSource,dataSource

at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1210) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:537) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:368) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1119) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1014) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:956) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:747) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480) at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:118) at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:686) at org.springframework.boot.SpringApplication.run(SpringApplication.java:320) at org.springframework.boot.SpringApplication.run(SpringApplication.java:957) at org.springframework.boot.SpringApplication.run(SpringApplication.java:946) at com.example.App.main(App.java:12)

Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private javax.sql.DataSource org.springframework.boot.autoconfigure.orm.jpa.JpaBaseConfiguration.dataSource; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'realDataSource' defined in class path resource [com/example/AppConfig.class]: Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSourceInitializer': Invocation of init method failed; nested exception is org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [javax.sql.DataSource] is defined: expected single matching bean but found 2: realDataSource,dataSource

at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:561) at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331) ... 25 common frames omitted

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'realDataSource' defined in class path resource [com/example/AppConfig.class]: Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSourceInitializer': Invocation of init method failed; nested exception is org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [javax.sql.DataSource] is defined: expected single matching bean but found 2: realDataSource,dataSource

at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:547) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1120) at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1044) at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:942) at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:533) ... 27 common frames omitted

Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSourceInitializer': Invocation of init method failed; nested exception is org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [javax.sql.DataSource] is defined: expected single matching bean but found 2: realDataSource,dataSource

at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:136) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsBeforeInitialization(AbstractAutowireCapableBeanFactory.java:408) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1566) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:217) at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:350) at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:331) at org.springframework.boot.autoconfigure.jdbc.DataSourceInitializerPostProcessor.postProcessAfterInitialization(DataSourceInitializerPostProcessor.java:62) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:422) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1579) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539) ... 36 common frames omitted

Caused by: org.springframework.beans.factory.NoUniqueBeanDefinitionException: No qualifying bean of type [javax.sql.DataSource] is defined: expected single matching bean but found 2: realDataSource,dataSource

at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:365) at org.springframework.beans.factory.support.DefaultListableBeanFactory.getBean(DefaultListableBeanFactory.java:331) at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:968) at org.springframework.boot.autoconfigure.jdbc.DataSourceInitializer.init(DataSourceInitializer.java:67) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:497) at org.springsource.loaded.ri.ReflectiveInterceptor.jlrMethodInvoke(ReflectiveInterceptor.java:1270) at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleElement.invoke(InitDestroyAnnotationBeanPostProcessor.java:349) at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor$LifecycleMetadata.invokeInitMethods(InitDestroyAnnotationBeanPostProcessor.java:300) at org.springframework.beans.factory.annotation.InitDestroyAnnotationBeanPostProcessor.postProcessBeforeInitialization(InitDestroyAnnotationBeanPostProcessor.java:133) ... 50 common frames omitted

2015-05-20 02:56:33.814 INFO 4027 --- [ main] o.apache.catalina.core.StandardService : Stopping service Tomcat 2015-05-20 02:56:33.837 INFO 4027 --- [ main] .b.l.ClasspathLoggingApplicationListener : Application failed to start with classpath: [file:/Users/maki/git/hajiboot-samples/chapter03/3.2.1_hajiboot-rest/src/main/resources/, file:/Users/maki/git/hajiboot-samples/chapter03/3.2.1_hajiboot-rest/src/main/resources/, file:/Users/maki/git/hajiboot-samples/chapter03/3.2.1_hajiboot-rest/target/classes/, file:/Users/maki/.m2/repository/org/aspectj/aspectjweaver/1.8.5/aspectjweaver-1.8.5.jar, file:/Users/maki/.m2/repository/org/springframework/boot/spring-boot-starter/1.2.3.RELEASE/spring-boot-starter-1.2.3.RELEASE.jar, file:/Users/maki/.m2/repository/com/fasterxml/jackson/core/jackson-core/2.4.5/jackson-core-2.4.5.jar, file:/Users/maki/.m2/repository/org/springframework/spring-core/4.1.6.RELEASE/spring-core-4.1.6.RELEASE.jar, file:/Users/maki/.m2/repository/org/springframework/spring-context/4.1.6.RELEASE/spring-context-4.1.6.RELEASE.jar, file:/Users/maki/.m2/repository/org/springframework/boot/spring-boot-starter-data-jpa/1.2.3.RELEASE/spring-boot-starter-data-jpa-1.2.3.RELEASE.jar, file:/Users/maki/.m2/repository/org/yaml/snakeyaml/1.14/snakeyaml-1.14.jar, file:/Users/maki/.m2/repository/aopalliance/aopalliance/1.0/aopalliance-1.0.jar, file:/Users/maki/.m2/repository/org/springframework/spring-webmvc/4.1.6.RELEASE/spring-webmvc-4.1.6.RELEASE.jar, file:/Users/maki/.m2/repository/org/springframework/spring-orm/4.1.6.RELEASE/spring-orm-4.1.6.RELEASE.jar, file:/Users/maki/.m2/repository/com/h2database/h2/1.4.185/h2-1.4.185.jar, file:/Users/maki/.m2/repository/org/slf4j/jul-to-slf4j/1.7.11/jul-to-slf4j-1.7.11.jar, file:/Users/maki/.m2/repository/org/springframework/boot/spring-boot-starter-aop/1.2.3.RELEASE/spring-boot-starter-aop-1.2.3.RELEASE.jar, file:/Users/maki/.m2/repository/org/springframework/boot/spring-boot-starter-jdbc/1.2.3.RELEASE/spring-boot-starter-jdbc-1.2.3.RELEASE.jar, file:/Users/maki/.m2/repository/org/springframework/spring-aspects/4.1.6.RELEASE/spring-aspects-4.1.6.RELEASE.jar, file:/Users/maki/.m2/repository/org/springframework/spring-web/4.1.6.RELEASE/spring-web-4.1.6.RELEASE.jar, file:/Users/maki/.m2/repository/xml-apis/xml-apis/1.0.b2/xml-apis-1.0.b2.jar, file:/Users/maki/.m2/repository/org/apache/tomcat/embed/tomcat-embed-el/8.0.20/tomcat-embed-el-8.0.20.jar, file:/Users/maki/.m2/repository/antlr/antlr/2.7.7/antlr-2.7.7.jar, file:/Users/maki/.m2/repository/org/springframework/boot/spring-boot-starter-tomcat/1.2.3.RELEASE/spring-boot-starter-tomcat-1.2.3.RELEASE.jar, file:/Users/maki/.m2/repository/ch/qos/logback/logback-classic/1.1.3/logback-classic-1.1.3.jar, file:/Users/maki/.m2/repository/org/apache/tomcat/tomcat-juli/8.0.20/tomcat-juli-8.0.20.jar, file:/Users/maki/.m2/repository/org/aspectj/aspectjrt/1.8.5/aspectjrt-1.8.5.jar, file:/Users/maki/.m2/repository/org/hamcrest/hamcrest-core/1.3/hamcrest-core-1.3.jar, file:/Users/maki/.m2/repository/org/springframework/spring-expression/4.1.6.RELEASE/spring-expression-4.1.6.RELEASE.jar, file:/Users/maki/.m2/repository/org/slf4j/jcl-over-slf4j/1.7.11/jcl-over-slf4j-1.7.11.jar, file:/Users/maki/.m2/repository/org/apache/tomcat/embed/tomcat-embed-websocket/8.0.20/tomcat-embed-websocket-8.0.20.jar, file:/Users/maki/.m2/repository/org/apache/tomcat/tomcat-jdbc/8.0.20/tomcat-jdbc-8.0.20.jar, file:/Users/maki/.m2/repository/javax/validation/validation-api/1.1.0.Final/validation-api-1.1.0.Final.jar, file:/Users/maki/.m2/repository/org/slf4j/log4j-over-slf4j/1.7.11/log4j-over-slf4j-1.7.11.jar, file:/Users/maki/.m2/repository/dom4j/dom4j/1.6.1/dom4j-1.6.1.jar, file:/Users/maki/.m2/repository/org/apache/tomcat/embed/tomcat-embed-logging-juli/8.0.20/tomcat-embed-logging-juli-8.0.20.jar, file:/Users/maki/.m2/repository/org/springframework/spring-aop/4.1.6.RELEASE/spring-aop-4.1.6.RELEASE.jar, file:/Users/maki/.m2/repository/com/fasterxml/classmate/1.0.0/classmate-1.0.0.jar, file:/Users/maki/.m2/repository/org/springframework/spring-jdbc/4.1.6.RELEASE/spring-jdbc-4.1.6.RELEASE.jar, file:/Users/maki/.m2/repository/org/springframework/boot/spring-boot/1.2.3.RELEASE/spring-boot-1.2.3.RELEASE.jar, file:/Users/maki/.m2/repository/ch/qos/logback/logback-core/1.1.3/logback-core-1.1.3.jar, file:/Users/maki/.m2/repository/org/springframework/data/spring-data-jpa/1.7.2.RELEASE/spring-data-jpa-1.7.2.RELEASE.jar, file:/Users/maki/.m2/repository/org/apache/tomcat/embed/tomcat-embed-core/8.0.20/tomcat-embed-core-8.0.20.jar, file:/Users/maki/.m2/repository/org/projectlombok/lombok/1.14.0/lombok-1.14.0.jar, file:/Users/maki/.m2/repository/org/jboss/jandex/1.1.0.Final/jandex-1.1.0.Final.jar, file:/Users/maki/.m2/repository/org/hibernate/javax/persistence/hibernate-jpa-2.1-api/1.0.0.Final/hibernate-jpa-2.1-api-1.0.0.Final.jar, file:/Users/maki/.m2/repository/org/springframework/spring-beans/4.1.6.RELEASE/spring-beans-4.1.6.RELEASE.jar, file:/Users/maki/.m2/repository/org/springframework/data/spring-data-commons/1.9.2.RELEASE/spring-data-commons-1.9.2.RELEASE.jar, file:/Users/maki/.m2/repository/org/jboss/logging/jboss-logging/3.1.3.GA/jboss-logging-3.1.3.GA.jar, file:/Users/maki/.m2/repository/org/lazyluke/log4jdbc-remix/0.2.7/log4jdbc-remix-0.2.7.jar, file:/Users/maki/.m2/repository/org/hibernate/hibernate-validator/5.1.3.Final/hibernate-validator-5.1.3.Final.jar, file:/Users/maki/.m2/repository/org/javassist/javassist/3.18.1-GA/javassist-3.18.1-GA.jar, file:/Users/maki/.m2/repository/org/slf4j/slf4j-api/1.7.11/slf4j-api-1.7.11.jar, file:/Users/maki/.m2/repository/org/hibernate/hibernate-core/4.3.8.Final/hibernate-core-4.3.8.Final.jar, file:/Users/maki/.m2/repository/org/hibernate/common/hibernate-commons-annotations/4.0.5.Final/hibernate-commons-annotations-4.0.5.Final.jar, file:/Users/maki/.m2/repository/org/springframework/boot/spring-boot-autoconfigure/1.2.3.RELEASE/spring-boot-autoconfigure-1.2.3.RELEASE.jar, file:/Users/maki/.m2/repository/org/springframework/boot/spring-boot-starter-web/1.2.3.RELEASE/spring-boot-starter-web-1.2.3.RELEASE.jar, file:/Users/maki/.m2/repository/org/hibernate/hibernate-entitymanager/4.3.8.Final/hibernate-entitymanager-4.3.8.Final.jar, file:/Users/maki/.m2/repository/org/jboss/logging/jboss-logging-annotations/1.2.0.Beta1/jboss-logging-annotations-1.2.0.Beta1.jar, file:/Users/maki/.m2/repository/junit/junit/4.12/junit-4.12.jar, file:/Users/maki/.m2/repository/com/fasterxml/jackson/core/jackson-annotations/2.4.5/jackson-annotations-2.4.5.jar, file:/Users/maki/.m2/repository/org/springframework/spring-tx/4.1.6.RELEASE/spring-tx-4.1.6.RELEASE.jar, file:/Users/maki/.m2/repository/javax/transaction/javax.transaction-api/1.2/javax.transaction-api-1.2.jar, file:/Users/maki/.m2/repository/org/springframework/boot/spring-boot-starter-logging/1.2.3.RELEASE/spring-boot-starter-logging-1.2.3.RELEASE.jar, file:/Users/maki/.m2/repository/com/fasterxml/jackson/core/jackson-databind/2.4.5/jackson-databind-2.4.5.jar, file:/Users/maki/.m2/repository/org/springframework/springloaded/1.2.3.RELEASE/springloaded-1.2.3.RELEASE.jar] 2015-05-20 02:56:33.840 INFO 4027 --- [ main] utoConfigurationReportLoggingInitializer :

Error starting ApplicationContext. To display the auto-configuration report enabled debug logging (start with --debug)

2015-05-20 02:56:33.841 ERROR 4027 --- [ main] o.s.boot.SpringApplication : Application startup failed (略)

原因は調査中ですが、ワークアランドとしてはAppConfigに以下の対応を行ってください。

import org.springframework.context.annotation.Primary;

@Primary // 追加
@Bean
DataSource dataSource() {
   return new Log4jdbcProxyDataSource(this.dataSource);
}

MySQLのコネクションはデフォルトで最後の接続から8時間後にタイムアウトし、この状態でPoolしているConnectionにアクセスすると com.mysql.jdbc.exceptions.jdbc4.CommunicationsException: The last packet successfully received from the server was XXXX milliseconds ago.が発生します。 (この説明は正確ではないかも)

この事象に対する正しい対処方法はStack OverflowでコミッターのStéphaneが回答しているように、 application.ymlに

spring.datasource.testOnBorrow: true
spring.datasource.validationQuery: SELECT 1

を設定することです。

ところが、書籍のAppConfigの以下の設定ではDataSourceBuilderを使ってurl、username、passwordしか設定していないため、 これ以外のspring.datasource.で始まるプロパティは適用されません。

// ダメな設定
@Bean
DataSource realDataSource() {
    DataSourceBuilder factory = DataSourceBuilder
            .create(this.dataSourceProperties.getClassLoader())
            .url(this.dataSourceProperties.getUrl())
            .username(this.dataSourceProperties.getUsername())
            .password(this.dataSourceProperties.getPassword());
    this.dataSource = factory.build();
    return this.dataSource;
}

@Primary
@Bean
DataSource dataSource() {
    return new Log4jdbcProxyDataSource(this.dataSource);
}

JavaConfigでマニュアルで作成したDataSourceにプロパティを適用するには@org.springframework.boot.context.properties.ConfigurationPropertiesアノテーションを使用します。

AppConfigを以下のように修正してください。

@ConfigurationProperties("spring.datasource") // ここを追加
@Bean
DataSource realDataSource() {
    DataSourceBuilder factory = DataSourceBuilder
            .create(this.dataSourceProperties.getClassLoader())
            .url(this.dataSourceProperties.getUrl())
            .username(this.dataSourceProperties.getUsername())
            .password(this.dataSourceProperties.getPassword());
    this.dataSource = factory.build();
    return this.dataSource;
}

@Primary
@Bean
DataSource dataSource() {
    return new Log4jdbcProxyDataSource(this.dataSource);
}

MySQLを使っていない場合も、この設定は行うべきです。