web-dev-qa-db-ja.com

NoSuchBeanDefinitionExceptionは、この依存関係の自動配線候補として適格な少なくとも1つのBeanを予期していました

私はこの質問が何度も聞かれたことを知っていますが、それを乗り越えるのに本当に苦労しています。私はそれらの質問を見て非常に多くの組み合わせを試しましたが、誰も私のケースに当てはまらないようです。

完全なログエラーは次のとおりです。

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'professorController': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.personal.online.dao.ProfessorDao com.personal.online.controller.ProfessorController.professorDao; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.personal.online.dao.ProfessorDao] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.Java:292)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.Java:1185)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.Java:537)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.Java:475)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.Java:304)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.Java:228)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.Java:300)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.Java:195)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.Java:700)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.Java:760)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.Java:482)
    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.Java:643)
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.Java:606)
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.Java:657)
    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.Java:525)
    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.Java:466)
    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.Java:136)
    at javax.servlet.GenericServlet.init(GenericServlet.Java:160)
    at org.Apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.Java:1280)
    at org.Apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.Java:1193)
    at org.Apache.catalina.core.StandardWrapper.allocate(StandardWrapper.Java:865)
    at org.Apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.Java:136)
    at org.Apache.catalina.core.StandardContextValve.invoke(StandardContextValve.Java:123)
    at org.Apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.Java:502)
    at org.Apache.catalina.core.StandardHostValve.invoke(StandardHostValve.Java:171)
    at org.Apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.Java:100)
    at org.Apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.Java:953)
    at org.Apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.Java:118)
    at org.Apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.Java:408)
    at org.Apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.Java:1041)
    at org.Apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.Java:603)
    at org.Apache.Tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.Java:312)
    at Java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.Java:1142)
    at Java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.Java:617)
    at Java.lang.Thread.run(Thread.Java:745)
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private com.personal.online.dao.ProfessorDao com.personal.online.controller.ProfessorController.professorDao; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.personal.online.dao.ProfessorDao] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.Java:508)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.Java:87)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.Java:289)
    ... 34 more
Caused by: org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.personal.online.dao.ProfessorDao] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.Java:1100)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.Java:960)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.Java:855)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.Java:480)
    ... 36 more

jan 22, 2015 9:51:21 PM org.Apache.catalina.core.StandardWrapperValve invoke
Grave: Allocate exception for servlet appServlet
org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [com.personal.online.dao.ProfessorDao] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {@org.springframework.beans.factory.annotation.Autowired(required=true)}
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.Java:1100)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.Java:960)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.Java:855)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.Java:480)
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.Java:87)
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.Java:289)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.Java:1185)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.Java:537)
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.Java:475)
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.Java:304)
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.Java:228)
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.Java:300)
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.Java:195)
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.Java:700)
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.Java:760)
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.Java:482)
    at org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.Java:643)
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.Java:606)
    at org.springframework.web.servlet.FrameworkServlet.createWebApplicationContext(FrameworkServlet.Java:657)
    at org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.Java:525)
    at org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.Java:466)
    at org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.Java:136)
    at javax.servlet.GenericServlet.init(GenericServlet.Java:160)
    at org.Apache.catalina.core.StandardWrapper.initServlet(StandardWrapper.Java:1280)
    at org.Apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.Java:1193)
    at org.Apache.catalina.core.StandardWrapper.allocate(StandardWrapper.Java:865)
    at org.Apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.Java:136)
    at org.Apache.catalina.core.StandardContextValve.invoke(StandardContextValve.Java:123)
    at org.Apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.Java:502)
    at org.Apache.catalina.core.StandardHostValve.invoke(StandardHostValve.Java:171)
    at org.Apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.Java:100)
    at org.Apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.Java:953)
    at org.Apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.Java:118)
    at org.Apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.Java:408)
    at org.Apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.Java:1041)
    at org.Apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.Java:603)
    at org.Apache.Tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.Java:312)
    at Java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.Java:1142)
    at Java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.Java:617)
    at Java.lang.Thread.run(Thread.Java:745)

現在の実装は次のとおりです。

コントローラ：

package com.personal.online.controller;

// imports

@Transactional
@Controller
public class ProfessorController {

    @Autowired
    private ProfessorDao professorDao;

    @RequestMapping("cadastrarProfessor")
    public String cadastrar() {
        professorDao.persist(new Professor("some name"));
        return "professor/formulario";
    }
}

インターフェース：

package com.personal.online.dao;

public interface ProfessorDao {
    void persist(Professor professor);
}

リポジトリ：

package com.personal.online.dao;

@Repository
public class JpaProfessorDao implements ProfessorDao {

    @PersistenceContext
    EntityManager em;

    @Transactional
    public void persist(Professor professor) {
        em.persist(professor);
    }
}

モデル：

package com.personal.online.model;

@Entity
@Table(name = "Professor")
public class Professor implements Serializable {
    private static final long serialVersionUID = 1L;

    @Id
    @GeneratedValue
    private Long id;
    private String nome;

    public Professor() {
    }

    public Professor(String nome) {
        this.nome = nome;
    }

    public String getNome() {
        return nome;
    }

    public void setNome(String nome) {
        this.nome = nome;
    }
}

スプリング構成：

<annotation-driven />

<resources mapping="/resources/**" location="/resources/" />

<beans:bean
    class="org.springframework.web.servlet.view.InternalResourceViewResolver">
    <beans:property name="prefix" value="/WEB-INF/views/" />
    <beans:property name="suffix" value=".jsp" />
</beans:bean>

<beans:bean
    class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
    <beans:property name="messageConverters">
        <beans:list>
            <beans:ref bean="jsonMessageConverter" />
        </beans:list>
    </beans:property>
</beans:bean>

<beans:bean id="jsonMessageConverter"
    class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
</beans:bean>

<beans:bean id="mysqlDataSource" class="org.Apache.commons.dbcp.BasicDataSource">
    <beans:property name="driverClassName" value="com.mysql.jdbc.Driver" />
    <beans:property name="url"
        value="jdbc:mysql://localhost:3306/PersonalOnline" />
    <beans:property name="username" value="root" />
    <beans:property name="password" value="" />
</beans:bean>

<beans:bean id="entityManagerFactory"
    class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <beans:property name="dataSource" ref="mysqlDataSource" />
    <beans:property name="jpaVendorAdapter">
        <beans:bean
            class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter" />
    </beans:property>
</beans:bean>

<beans:bean id="transactionManager"
    class="org.springframework.orm.jpa.JpaTransactionManager">
    <beans:property name="entityManagerFactory" ref="entityManagerFactory" />
</beans:bean>

<tx:annotation-driven />

<context:component-scan base-package="com.personal.online.controller" />

persistence.xml：

    <provider>org.hibernate.ejb.HibernatePersistence</provider>

    <class>com.personal.online.model.Professor</class>
    <properties>
        <property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver" />
        <property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/personal_online" />
        <property name="javax.persistence.jdbc.user" value="root" />
        <property name="javax.persistence.jdbc.password" value="" />

        <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5InnoDBDialect" />
        <property name="hibernate.show_sql" value="true" />
        <property name="hibernate.format_sql" value="true" />

        <property name="hibernate.hbm2ddl.auto" value="update" />
    </properties>
</persistence-unit>
javahibernatespring-mvcjpa
8
Felipe Mosso

JpaProfessorDaoのパッケージをスキャンするパッケージのリストに追加します

<context:component-scan base-package="com.personal.online.controller, com.personal.online.dao" />
9
Reimeus

スプリント設定には、<context:component-scan base-package="com.personal.online.controller" />これは、そのパッケージの下で注釈付きBean定義を探すだけであるため、リポジトリが見つからないことを意味します。 @ ha9u63arの推奨に従って.xml構成に追加するか、必要なパッケージをcomponent-scan要素に追加します。カンマで区切って複数のパッケージを追加するか、「ベース」を1レベル上げることができます：<context:component-scan base-package="com.personal.online" />

2
Dima

ApplicationContext.xmlファイルに次のBean定義がありません。

    @Autowired
    private ProfessorDao professorDao;

このためのセクションを作成する必要があります。うまくいくはずです！

<bean id="professorDao" class="com.personal.online.dao.ProfessorDao"/>

必要に応じて、コンストラクター引数を設定してください。

0
ha9u63ar

3レベルのSpring MVCプロジェクトを作成したとき、この例外がありました。私の間違いは次のとおりです。service-layerに、service-context.xmlにあるディレクトリ「resource」を作成しました。ただし、このディレクトリは「resources」（Maven仕様に準拠）と呼ぶ必要があります。

0
Alexander Milosh

Springframeworkでは、_@EnableJpaRepositories_注釈を使用して、リポジトリパッケージのスキャンを構成クラスに転送します。

例：

@EnableJpaRepositories (value = "com.encashment.repository")

0
Yevhen Pohiba