英文:
jparepository not autowired in service
问题
以下是翻译好的内容：
@Service
@Transactional
public class ArticleService {
@Autowired
private ArticleRepository articleRepository;
}
@Repository
public interface ArticleRepository extends JpaRepository<ArticleRepository, Long>{
}
<bean name="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
<property name="url" value="jdbc:mysql://localhost:3306/gestion_de_stock?createDatabaseIfNotExist=true"></property>
<property name="username" value="root"></property>
<property name="password" value=""></property>
</bean>
<bean name="persistenceUnitManager" class="org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager">
<property name="persistenceXmlLocations">
<list>
<value>classpath*:META-INF/persistence.xml</value>
</list>
</property>
<property name="defaultDataSource" ref="dataSource"></property>
</bean>
<bean name="entityManagerFactory" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceUnitManager" ref="persistenceUnitManager"></property>
<property name="persistenceUnitName" value="UP_GESTION_DE_STOCK_MVC"></property>
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"></property>
</bean>
<context:component-scan base-package="com.mvc.stock" />
如果您需要更多帮助，请随时提问。
英文:
I am trying to autowire a repository in a service but I keep getting the following error
<pre>
org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'articleService': Unsatisfied dependency expressed through field 'articleRepository'; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.mvc.stock.repository.ArticleRepository' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:588)
at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:366)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1264)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:553)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483)
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:761)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:866)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542)
at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:668)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:634)
at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.java:682)
at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:553)
at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:494)
at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:138)
at javax.servlet.GenericServlet.init(GenericServlet.java:158)
at org.apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.java:1238)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1151)
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:828)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:135)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:522)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1095)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:672)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type 'com.mvc.stock.repository.ArticleRepository' available: expected at least 1 bean which qualifies as autowire candidate. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoMatchingBeanFound(DefaultListableBeanFactory.java:1486)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1104)
at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1066)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:585)
... 38 more
</pre>
Here is my configuration
<bean name="dataSource" class="org.springframework.jdbc.datasource.DriverManagerDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver"></property>
<property name="url" value="jdbc:mysql://localhost:3306/gestion_de_stock?createDatabaseIfNotExist=true"></property>
<property name="username" value="root"></property>
<property name="password" value=""></property>
</bean>
<bean name="persistenceUnitManager"
class="org.springframework.orm.jpa.persistenceunit.DefaultPersistenceUnitManager">
<property name="persistenceXmlLocations">
<list>
<value>classpath*:META-INF/persistence.xml</value>
</list>
</property>
<property name="defaultDataSource" ref="dataSource"></property>
</bean>
<bean name="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="persistenceUnitManager" ref="persistenceUnitManager"></property>
<property name="persistenceUnitName" value="UP_GESTION_DE_STOCK_MVC"></property>
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory"></property>
</bean>
<context:component-scan base-package="com.mvc.stock" />
here is my code
@Service
@Transactional
public class ArticleService {
@Autowired
private ArticleRepository articleRepository;
}
and the repository
@Repository
public interface ArticleRepository extends JpaRepository<ArticleRepository, Long>{
}
答案1
得分: 1
错误信息如下：
org.springframework.beans.factory.UnsatisfiedDependencyException:
Error creating bean with name 'articleService': Unsatisfied dependency expressed through field 'articleRepository';
nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException:
No qualifying bean of type 'com.mvc.stock.repository.ArticleRepository' available:
expected at least 1 bean which qualifies as autowire candidate.
Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
UnsatisfiedDependencyException 是由于 ArticleRepository 中的嵌套异常 NoSuchBeanDefinitionException 引起的。
大多数情况下，这是由于缺少 @Repository 注解引起的。但在你的情况下，请检查 ArticleRepository 接口，你使用了 JpaRepository<ArticleRepository, Long>，而应该使用 JpaRepository<Article, Long>。
ArticleRepository:
@Repository
public interface ArticleRepository extends JpaRepository<Article, Integer> {
}
ArticleService:
@Service
class ArticleService {
@Autowired
ArticleRepository articleRepository;
//其他字段
}
英文:
Error says:
org.springframework.beans.factory.UnsatisfiedDependencyException:
Error creating bean with name 'articleService': Unsatisfied dependency expressed through field 'articleRepository';
nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException:
No qualifying bean of type 'com.mvc.stock.repository.ArticleRepository' available:
expected at least 1 bean which qualifies as autowire candidate.
Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
UnsatisfiedDependencyException due to nested Exception NoSuchBeanDefinitionException in ArticleRepository.
Most of the time it comes due to absence of @Repository. But in your case check ArticleRepository interface you have used JpaRepository<ArticleRepository, Long> instead of JpaRepository< Article, Long>
ArticleRepository:
@Repository
public interface ArticleRepository extends JpaRepository< Article, Integer> {
}
ArticleService
@Service
class articleService{
@Autowired
ArticleRepository articleRepository;
//other fields
}
答案2
得分: 1
你没有指示Spring生成存储库。这可以通过以下方式完成：
<jpa:repositories base-package="foo.bar" />
你可能还想启用注释驱动的事务管理：
<tx:annotation-driven />
请参阅 https://stackoverflow.com/questions/25049778/how-to-configure-spring-data-jpa-using-xml。
英文:
You didn’t instruct Spring to generate the repositories.
This is done via:
<jpa:repositories base-package="foo.bar" />
You probably also want to enable annotation driven transaction management:
<tx:annotation-driven />
See https://stackoverflow.com/questions/25049778/how-to-configure-spring-data-jpa-using-xml
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