Warum bedeutet der Zusatz @EnableAutoConfiguration Ursache spring-boot-Fehler "Nicht in der Lage zu finden, JPA, Pakete zu Scannen"

Warum bedeutet der Zusatz @EnableAutoConfiguration auf den folgenden Frühjahr-boot-app-Ursache, die es nicht schaffen, eine entityManagerFactory?
Wenn ich entfernen @EnableAutoConfiguration funktioniert alles einwandfrei.
Kann jemand Licht in dieses Verhalten?

package test.builder;

import javax.sql.DataSource;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.CommandLineRunner;
import org.springframework.boot.SpringApplication;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.PropertySource;
import org.springframework.context.support.AbstractApplicationContext;
import org.springframework.context.support.PropertySourcesPlaceholderConfigurer;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.orm.jpa.JpaTransactionManager;
import org.springframework.orm.jpa.JpaVendorAdapter;
import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
import org.springframework.orm.jpa.vendor.Database;
import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
import org.springframework.transaction.PlatformTransactionManager;

import test.builder.jpa.entity.Builder;
import test.builder.jpa.repository.BuilderRepository;

@Configuration
//@EnableAutoConfiguration
@EnableJpaRepositories("test.builder")
@PropertySource("classpath:application.properties")
public class BootApp implements CommandLineRunner {

    private static Logger logger = LoggerFactory.getLogger(BootApp.class);

    @Value("${spring.datasource.driverClassName}")
    private String databaseDriverClassName;

    @Value("${spring.datasource.url}")
    private String datasourceUrl;

    @Value("${spring.datasource.username}")
    private String databaseUsername;

    @Value("${spring.datasource.password}")
    private String databasePassword;

    @Bean
    public static PropertySourcesPlaceholderConfigurer placeHolderConfigurer() {
        return new PropertySourcesPlaceholderConfigurer();
    }

    @Bean
    public DataSource dataSource() {

        org.apache.tomcat.jdbc.pool.DataSource ds = new org.apache.tomcat.jdbc.pool.DataSource();
        ds.setDriverClassName(databaseDriverClassName);
        ds.setUrl(datasourceUrl);
        ds.setUsername(databaseUsername);
        ds.setPassword(databasePassword);

        return ds;
    }

    @Bean
    public LocalContainerEntityManagerFactoryBean entityManagerFactory(DataSource dataSource,
            JpaVendorAdapter jpaVendorAdapter) {
        LocalContainerEntityManagerFactoryBean lef = new LocalContainerEntityManagerFactoryBean();
        lef.setDataSource(dataSource);
        lef.setJpaVendorAdapter(jpaVendorAdapter);
        lef.setPackagesToScan("test.builder");

        return lef;
    }

    @Bean
    public JpaVendorAdapter jpaVendorAdapter() {
        HibernateJpaVendorAdapter hibernateJpaVendorAdapter = new HibernateJpaVendorAdapter();
        hibernateJpaVendorAdapter.setShowSql(true);
        hibernateJpaVendorAdapter.setGenerateDdl(false);
        hibernateJpaVendorAdapter.setDatabase(Database.SQL_SERVER);
        return hibernateJpaVendorAdapter;
    }

    @Bean
    public PlatformTransactionManager transactionManager() {
        return new JpaTransactionManager();
    }

    @Override
    public void run(String... args) {

        AbstractApplicationContext context = new AnnotationConfigApplicationContext(BootApp.class);
        BuilderRepository repository = context.getBean(BuilderRepository.class);
        Builder builder = repository.findOne(10);

        logger.info("Retrieved ", builder.toString());

        context.close();
    }

    public static void main(String[] args) {

        SpringApplication.run(BootApp.class, args);

    }

}

Den zugrunde liegenden Fehler ist

Unable to find JPA packages to scan, please define a @ComponentScan annotation or disable JpaAutoConfiguration

Die vollständige Ausgabe (inklusive stacktrace) -

14:53:50,842 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback.groovy]
14:53:50,843 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback-test.xml]
14:53:50,991 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.ConsoleAppender]
14:53:50,997 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [STDOUT]
14:53:51,017 |-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.classic.encoder.PatternLayoutEncoder] for [encoder] property
14:53:51,114 |-INFO in ch.qos.logback.classic.joran.action.RootLoggerAction - Setting level of ROOT logger to INFO
14:53:51,114 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [STDOUT] to Logger[ROOT]
14:53:51,115 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - End of configuration.
14:53:51,117 |-INFO in ch.qos.logback.classic.joran.JoranConfigurator@5ece2187 - Registering current configuration as safe fallback point

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/_` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: Spring Boot ::             (v0.5.0.M6)

14:53:51,849 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.ConsoleAppender]
14:53:51,854 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [STDOUT]
14:53:51,854 |-INFO in ch.qos.logback.core.joran.action.NestedComplexPropertyIA - Assuming default type [ch.qos.logback.classic.encoder.PatternLayoutEncoder] for [encoder] property
14:53:51,855 |-INFO in ch.qos.logback.classic.joran.action.RootLoggerAction - Setting level of ROOT logger to INFO
14:53:51,856 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [STDOUT] to Logger[ROOT]
14:53:51,856 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - End of configuration.
14:53:51,856 |-INFO in ch.qos.logback.classic.joran.JoranConfigurator@722b9406 - Registering current configuration as safe fallback point
14:53:51.945 INFO  o.s.c.a.AnnotationConfigApplicationContext - Refreshing org.springframework.context.annotation.AnnotationConfigApplicationContext@6490832e: startup date [Thu Dec 19 14:53:51 GMT 2013]; root of context hierarchy
14:53:52.829 INFO  o.s.b.f.s.DefaultListableBeanFactory - Overriding bean definition for bean 'transactionManager': replacing [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=bootApp; factoryMethodName=transactionManager; initMethodName=null; destroyMethodName=(inferred); defined in class test.builder.BootApp] with [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration; factoryMethodName=transactionManager; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]]
14:53:52.830 INFO  o.s.b.f.s.DefaultListableBeanFactory - Overriding bean definition for bean 'entityManagerFactory': replacing [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=bootApp; factoryMethodName=entityManagerFactory; initMethodName=null; destroyMethodName=(inferred); defined in class test.builder.BootApp] with [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration; factoryMethodName=entityManagerFactory; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]]
14:53:52.830 INFO  o.s.b.f.s.DefaultListableBeanFactory - Overriding bean definition for bean 'jpaVendorAdapter': replacing [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=bootApp; factoryMethodName=jpaVendorAdapter; initMethodName=null; destroyMethodName=(inferred); defined in class test.builder.BootApp] with [Root bean: class [null]; scope=; abstract=false; lazyInit=false; autowireMode=3; dependencyCheck=0; autowireCandidate=true; primary=false; factoryBeanName=org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration; factoryMethodName=jpaVendorAdapter; initMethodName=null; destroyMethodName=(inferred); defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]]
Exception in thread "main" 14:53:53.382 INFO  o.s.b.a.AutoConfigurationReportLoggingInitializer$AutoConfigurationReportLogger - 


=========================
AUTO-CONFIGURATION REPORT
=========================


Positive matches:
-----------------

   MessageSourceAutoConfiguration
      - @ConditionalOnMissingBean (types: org.springframework.context.MessageSource; SearchStrategy: all) found no beans (OnBeanCondition)

   AopAutoConfiguration
      - @ConditionalOnClass classes found: org.springframework.context.annotation.EnableAspectJAutoProxy,org.aspectj.lang.annotation.Aspect,org.aspectj.lang.reflect.Advice (OnClassCondition)
      - SpEL expression on org.springframework.boot.autoconfigure.aop.AopAutoConfiguration: #{true} (OnExpressionCondition)
      - @ConditionalOnClass classes found: org.springframework.context.annotation.EnableAspectJAutoProxy,org.aspectj.lang.annotation.Aspect,org.aspectj.lang.reflect.Advice (OnClassCondition)
      - SpEL expression on org.springframework.boot.autoconfigure.aop.AopAutoConfiguration: #{true} (OnExpressionCondition)

   AopAutoConfiguration.JdkDynamicAutoProxyConfiguration
      - SpEL expression on org.springframework.boot.autoconfigure.aop.AopAutoConfiguration$JdkDynamicAutoProxyConfiguration: #{!false} (OnExpressionCondition)
      - SpEL expression on org.springframework.boot.autoconfigure.aop.AopAutoConfiguration$JdkDynamicAutoProxyConfiguration: #{!false} (OnExpressionCondition)

   DataSourceAutoConfiguration
      - @ConditionalOnClass classes found: org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType (OnClassCondition)
      - @ConditionalOnClass classes found: org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType (OnClassCondition)

   DataSourceAutoConfiguration.JdbcTemplateConfiguration
      - existing auto database detected (DataSourceAutoConfiguration.DatabaseCondition)
      - existing auto database detected (DataSourceAutoConfiguration.DatabaseCondition)

   DataSourceAutoConfiguration.JdbcTemplateConfiguration#jdbcTemplate
      - @ConditionalOnMissingBean (types: org.springframework.jdbc.core.JdbcOperations; SearchStrategy: all) found no beans (OnBeanCondition)

   DataSourceAutoConfiguration.JdbcTemplateConfiguration#namedParameterJdbcTemplate
      - @ConditionalOnMissingBean (types: org.springframework.jdbc.core.namedparam.NamedParameterJdbcOperations; SearchStrategy: all) found no beans (OnBeanCondition)

   DataSourceTransactionManagerAutoConfiguration
      - @ConditionalOnClass classes found: org.springframework.jdbc.core.JdbcTemplate,org.springframework.transaction.PlatformTransactionManager (OnClassCondition)
      - @ConditionalOnClass classes found: org.springframework.jdbc.core.JdbcTemplate,org.springframework.transaction.PlatformTransactionManager (OnClassCondition)

   HibernateJpaAutoConfiguration
      - @ConditionalOnClass classes found: org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean,org.springframework.transaction.annotation.EnableTransactionManagement,javax.persistence.EntityManager,org.hibernate.ejb.HibernateEntityManager (OnClassCondition)
      - @ConditionalOnClass classes found: org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean,org.springframework.transaction.annotation.EnableTransactionManagement,javax.persistence.EntityManager,org.hibernate.ejb.HibernateEntityManager (OnClassCondition)
      - @ConditionalOnBean (types: javax.sql.DataSource; SearchStrategy: all) found the following [dataSource] (OnBeanCondition)

   ServerPropertiesAutoConfiguration#serverProperties
      - @ConditionalOnMissingBean (types: org.springframework.boot.context.embedded.properties.ServerProperties; SearchStrategy: all) found no beans (OnBeanCondition)


Negative matches:
-----------------

   PropertyPlaceholderAutoConfiguration#propertySourcesPlaceholderConfigurer
      - @ConditionalOnMissingBean (types: org.springframework.context.support.PropertySourcesPlaceholderConfigurer; SearchStrategy: current) found the following [placeHolderConfigurer] (OnBeanCondition)

   RabbitAutoConfiguration
      - required @ConditionalOnClass classes not found: org.springframework.amqp.rabbit.core.RabbitTemplate,com.rabbitmq.client.Channel (OnClassCondition)

   AopAutoConfiguration.CglibAutoProxyConfiguration
      - SpEL expression on org.springframework.boot.autoconfigure.aop.AopAutoConfiguration$CglibAutoProxyConfiguration: #{false} (OnExpressionCondition)

   BatchAutoConfiguration
      - required @ConditionalOnClass classes not found: org.springframework.batch.core.launch.JobLauncher (OnClassCondition)

   JpaRepositoriesAutoConfiguration
      - @ConditionalOnClass classes found: org.springframework.data.jpa.repository.JpaRepository (OnClassCondition)
      - @ConditionalOnMissingBean (types: org.springframework.data.jpa.repository.support.JpaRepositoryFactoryBean; SearchStrategy: all) found the following [&builderRepository] (OnBeanCondition)

   JpaRepositoriesAutoConfiguration.JpaWebConfiguration
      - web application classes not found (OnWebApplicationCondition)

   MongoRepositoriesAutoConfiguration
      - required @ConditionalOnClass classes not found: com.mongodb.Mongo,org.springframework.data.mongodb.repository.MongoRepository (OnClassCondition)

   DataSourceAutoConfiguration.DbcpConfiguration
      - tomcat DataSource (DataSourceAutoConfiguration.BasicDatabaseCondition)

   DataSourceAutoConfiguration.EmbeddedConfiguration
      - existing non-embedded database detected (DataSourceAutoConfiguration.EmbeddedDatabaseCondition)

   DataSourceAutoConfiguration.TomcatConfiguration
      - found database driver com.microsoft.sqlserver.jdbc.SQLServerDriver (DataSourceAutoConfiguration.TomcatDatabaseCondition)
      - found database driver com.microsoft.sqlserver.jdbc.SQLServerDriver (DataSourceAutoConfiguration.TomcatDatabaseCondition)
      - @ConditionalOnMissingBean (types: javax.sql.DataSource; SearchStrategy: all) found the following [dataSource] (OnBeanCondition)

   DataSourceTransactionManagerAutoConfiguration#transactionManager
      - @ConditionalOnMissingBean (names: transactionManager; SearchStrategy: all) found the following [transactionManager] (OnBeanCondition)

   JmsTemplateAutoConfiguration
      - required @ConditionalOnClass classes not found: org.springframework.jms.core.JmsTemplate,javax.jms.ConnectionFactory (OnClassCondition)

   DeviceResolverAutoConfiguration
      - required @ConditionalOnClass classes not found: org.springframework.mobile.device.DeviceResolverHandlerInterceptor,org.springframework.mobile.device.DeviceHandlerMethodArgumentResolver (OnClassCondition)

   JpaBaseConfiguration.JpaWebConfiguration
      - web application classes not found (OnWebApplicationCondition)

   ReactorAutoConfiguration
      - required @ConditionalOnClass classes not found: reactor.spring.context.config.EnableReactor (OnClassCondition)

   ThymeleafAutoConfiguration
      - required @ConditionalOnClass classes not found: org.thymeleaf.spring3.SpringTemplateEngine (OnClassCondition)

   DispatcherServletAutoConfiguration
      - web application classes not found (OnWebApplicationCondition)

   EmbeddedServletContainerAutoConfiguration
      - web application classes not found (OnWebApplicationCondition)

   MultipartAutoConfiguration
      - required @ConditionalOnClass classes not found: javax.servlet.Servlet,org.springframework.web.multipart.support.StandardServletMultipartResolver (OnClassCondition)

   WebMvcAutoConfiguration
      - web application classes not found (OnWebApplicationCondition)

   WebSocketAutoConfiguration
      - required @ConditionalOnClass classes not found: org.springframework.web.socket.WebSocketHandler (OnClassCondition)



org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]: Instantiation of bean failed; nested exception is org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean org.springframework.boot.autoconfigure.orm.jpa.JpaBaseConfiguration.entityManagerFactory()] threw exception; nested exception is java.lang.IllegalArgumentException: Unable to find JPA packages to scan, please define a @ComponentScan annotation or disable JpaAutoConfiguration
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:584)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1089)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:984)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:475)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:300)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:296)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:195)
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:973)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:750)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:482)
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:552)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:293)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:749)
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:738)
    at test.builder.BootApp.main(BootApp.java:104)
Caused by: org.springframework.beans.factory.BeanDefinitionStoreException: Factory method [public org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean org.springframework.boot.autoconfigure.orm.jpa.JpaBaseConfiguration.entityManagerFactory()] threw exception; nested exception is java.lang.IllegalArgumentException: Unable to find JPA packages to scan, please define a @ComponentScan annotation or disable JpaAutoConfiguration
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:188)
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:573)
    ... 16 more
Caused by: java.lang.IllegalArgumentException: Unable to find JPA packages to scan, please define a @ComponentScan annotation or disable JpaAutoConfiguration
    at org.springframework.util.Assert.notEmpty(Assert.java:268)
    at org.springframework.boot.autoconfigure.orm.jpa.JpaBaseConfiguration.getPackagesToScan(JpaBaseConfiguration.java:109)
    at org.springframework.boot.autoconfigure.orm.jpa.JpaBaseConfiguration.entityManagerFactory(JpaBaseConfiguration.java:76)
    at org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration$$EnhancerByCGLIB$$7973d544.CGLIB$entityManagerFactory$4(<generated>)
    at org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration$$EnhancerByCGLIB$$7973d544$$FastClassByCGLIB$$360fed5a.invoke(<generated>)
    at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:228)
    at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:334)
    at org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaAutoConfiguration$$EnhancerByCGLIB$$7973d544.entityManagerFactory(<generated>)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
    at java.lang.reflect.Method.invoke(Method.java:597)
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:166)
    ... 17 more

Pom-Extrakt -

<parent>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>0.5.0.M6</version>
</parent>

<dependencies>
    <dependency>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-data-jpa</artifactId>
    </dependency>
    <dependency>
        <groupId>org.apache.tomcat</groupId>
        <artifactId>tomcat-jdbc</artifactId>
    </dependency>
    <dependency>
        <groupId>com.microsoft.sqlserver</groupId>
        <artifactId>sqljdbc4</artifactId>
        <version>4.0</version>
    </dependency>
    <dependency>
        <groupId>ch.qos.logback</groupId>
        <artifactId>logback-core</artifactId>
        <version>1.0.13</version>
    </dependency>
    <dependency>
        <groupId>ch.qos.logback</groupId>
        <artifactId>logback-classic</artifactId>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
    </dependency>
</dependencies>

Jede Beratung geschätzt.

Ihre run() Methode ist die Erstellung Ihrer eigenen ApplicationContext (und nicht mit einer Spring-Boot-Funktionen). Warum wollen Sie das tun?
Angefangen habe ich mit dem nackten Knochen, spring-boot-code, den Sie Antwort unten. Aufgrund der fehlenden @ComponentScan ich fügte hinzu, mehr und mehr explizite config in einem Versuch, um es arbeiten. Ich war mit der Daten-jpa-erste Schritte Beispiel, das nicht haben oder benötigen Sie eine Komponente-scan-annotation. Wie auch immer, wie Ihre Antwort, die mein problem behoben, ich bin jetzt wieder auf dem spring-boot-Pfad. Und sehr ordentlich ist es auch. Danke für das Update.

InformationsquelleAutor KapudanPasha | 2013-12-19

Ist es, weil Frühling Starten will repositories erstellen für Sie, und Sie haben nicht gesagt, wo Sie sind. Sie brauchen eine @ComponentScan zu tun, dass (ich denke die Fehlermeldung sagt aus, also zumindest in neueren Versionen). Ihre Anwendung ist dabei eine Menge der Dinge, die es gar nicht brauchen. Sollte dies funktionieren:

@Configuration
@EnableAutoConfiguration
@ComponentScan("test.builder")
public class BootApp implements CommandLineRunner {

    private static Logger logger = LoggerFactory.getLogger(BootApp.class);

    @Autowired
    private BuilderRepository repository;

    @Override
    public void run(String... args) { 
        Builder builder = repository.findOne(10);    
        logger.info("Retrieved ", builder.toString());
    }

    public static void main(String[] args) {

        SpringApplication.run(BootApp.class, args);

    }

}

InformationsquelleAutor Dave Syer

6

Wo sind deine @Repository-Schnittstellen?

Frühling-Daten erstellen können Implementierungen für Sie der @Repository-Schnittstellen von verschiedenen Geschmacksrichtungen. Spring Boot wird sich um alle, die für Sie als lange, wie die @ - Repositories enthalten sind, in demselben Paket (oder ein sub-Paket) der @EnableAutoConfiguration Klasse.

http://projects.spring.io/spring-boot/docs/docs/howto.html

Ich zog meine Haare aus versuchen zu finden, warum die Klasse annotiert mit @Repository war nicht zu finden, eine Implementierung bean - stellt sich heraus, es war NICHT ein sub-Paket an das Spring-Boot-Anwendung. Klasse. Dank

InformationsquelleAutor Chris Savory

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