spring-data-jpa 使用名称创建 bean 时出错

【问题标题】：spring-data-jpa Error creating bean with namespring-data-jpa 使用名称创建 bean 时出错
【发布时间】：2017-12-12 08:31:24
【问题描述】：

我是一名新手开发人员。不久前我开始学习'jpa'。 我用 java config 创建了一个 spring 项目。

我的项目规范：

  • Java : 1.8

  • servlet : 3.1

  • spring : 4.3.2.RELEASE

  • tomcat : 8.5

  • spring-data-jpa 2.0.0.RELEASE

  • hibernate 5.1.0.Final

我的代码：

ServletConfig.class

@Configuration                                      
@EnableWebMvc                                       
@ComponentScan(basePackages = "com.knk.spring4")    
public class ServletConfig extends WebMvcConfigurerAdapter {
........
}

PersistenceConfig.class

@Configuration
@EnableTransactionManagement
@EnableJpaRepositories(basePackages = "com.knk.spring4.repository") 
public class PersistenceConfig {
.....
    @Bean(name = "entityManagerFactory")
    public EntityManagerFactory entityMangerFactory() {

        logger.info("EntityMangerFactory");

        LocalContainerEntityManagerFactoryBean emf = new LocalContainerEntityManagerFactoryBean();
        emf.setPersistenceUnitName("springDataTest");
        emf.setDataSource(getDataSource()); 
        emf.setPackagesToScan(new String[] {"com.knk.spring4.entity"}); 

        JpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
        emf.setJpaVendorAdapter(vendorAdapter);
        emf.setJpaProperties(additionalProperties());
        emf.afterPropertiesSet();

        return emf.getObject();
    }
.......
}

MemberEntity.class

@Entity
@Table(name = "MEMBER_KNK")
@SequenceGenerator(name = "MEMBERIDX_SEQ_GENERATOR"
                    , sequenceName = "MEMBERIDX_SEQ"
                    , initialValue = 1)
public class MemberEntity implements Serializable {

    private static final long serialVersionUID = 1L;

    @Id
    @GeneratedValue(strategy = GenerationType.SEQUENCE
                    , generator = "MEMBERIDX_SEQ_GENERATOR")
    private long memberIdx;
........
}

MemberRepository.class

@Repository
public interface MemberRepository extends JpaRepository<MemberEntity, Long> {

    @Query("select m from MemberVO m where m.id=:id")
    public MemberEntity getMemberIDbyId(@Param("id") String id);
}

MemberService.class

@Service
@Transactional
public class MemberService {

    @Autowired 
    private MemberRepository memberRepository;
........
}

我遇到的错误：

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'memberController': Unsatisfied dependency expressed through field 'memberService': Error creating bean with name 'memberService': Unsatisfied dependency expressed through field 'memberRepository': Error creating bean with name 'memberRepository': Initialization of bean failed; nested exception is java.lang.AbstractMethodError; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'memberRepository': Initialization of bean failed; nested exception is java.lang.AbstractMethodError; nested exception is org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'memberService': Unsatisfied dependency expressed through field 'memberRepository': Error creating bean with name 'memberRepository': Initialization of bean failed; nested exception is java.lang.AbstractMethodError; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'memberRepository': Initialization of bean failed; nested exception is java.lang.AbstractMethodError
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:569)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:349)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:776)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:861)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:541)
    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:668)
    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:540)
    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:494)
    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136)
    at javax.servlet.GenericServlet.init(GenericServlet.java:158)
    at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1183)
    at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:992)
    at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:4931)
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5241)
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1419)
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409)
    at java.util.concurrent.FutureTask.run(FutureTask.java:266)
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
    at java.lang.Thread.run(Thread.java:748)
Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'memberService': Unsatisfied dependency expressed through field 'memberRepository': Error creating bean with name 'memberRepository': Initialization of bean failed; nested exception is java.lang.AbstractMethodError; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'memberRepository': Initialization of bean failed; nested exception is java.lang.AbstractMethodError
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:569)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:349)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:207)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1214)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1054)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1019)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:566)
    ... 28 more
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'memberRepository': Initialization of bean failed; nested exception is java.lang.AbstractMethodError
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202)
    at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:207)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1214)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1054)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1019)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:566)
    ... 42 more
Caused by: java.lang.AbstractMethodError
    at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.getObjectFromFactoryBean(FactoryBeanRegistrySupport.java:99)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:302)
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:129)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1481)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1226)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543)
    ... 52 more

我认为这就是问题所在。

ServletConfig.class 或 PersistenceConfig.class 包装扫描

原来如此

@ComponentScan(basePackages = {"com.knk.spring4.controller", "com.knk.spring4.repository", "com.knk.spring4.service"})

和

@ComponentScan(basePackages = {"com.knk.spring4"})

@EnableJpaRepositories(basePackages = "com.knk.spring4.repository")

我已经尝试了 Basepackages 路径上的所有“*”和“**”。

【问题讨论】：

  • 我相信这与你的 jar 版本有关。尝试更改 servlet 的版本，或 spring-jpa ....
  • Spring Data JPA 2 需要 Spring 5。
  • 尝试更改查询..这将解决您的问题
  • public MemberEntity getMemberIDbyId(@Param("id") Long id); ..因为你的实体类 id 是long type ..
  • 谢谢大家的回答，谢谢大家！问题是“spring-data-jpa”的一个版本。再次感谢。

标签： java spring hibernate jpa spring-data-jpa


【解决方案1】：

尝试将 @Query("select m from MemberVO m where m.id=:id") 替换为 @Query("select m from MemberEntity m where m.memberIdx=:id")

【讨论】：

  • 这不会解决 Spring 类中的“java.lang.AbstractMethodError”
  • 错误在于创建存储库，所以可能是有问题，查询似乎与实体类的名称不兼容，所以它可能不是唯一的问题，但是我看不出那个查询是如何工作的。
  • @BillyFrost.. 查看异常 java.lang.AbstractMethodError 和当应用程序尝试调用抽象方法时抛出的异常。通常，这个错误会被编译器捕获；如果自上次编译当前执行的方法以来某些类的定义发生了不兼容的更改，则此错误只会在运行时发生。
  • 而MemberRepository是接口，当然getMemberIDbyId是抽象方法是内容抽象方法。
  • 我认为这个解释对你来说没问题..这不是类路径问题..我也面临同样的问题..
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