Spring data jpa-没有定义名为“ entityManagerFactory”的 bean; 自动连接依赖项的注入失败

我正在使用 spring data jpa，hibernate，mysql，tomcat7，maven 开发应用程序，结果出现了创建错误。

在设置构造函数参数时无法解析对 bean‘ entityManagerFactory’的引用; 没有定义名为‘ entityManagerFactory’的 bean; 自动连接依赖项的注入失败

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'initDbService': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.wahid.cse.repository.RoleRepository org.wahid.cse.service.InitDbService.roleRepository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'roleRepository': Cannot create inner bean '(inner bean)#c08f81' of type [org.springframework.orm.jpa.SharedEntityManagerCreator] while setting bean property 'entityManager'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#c08f81': Cannot resolve reference to bean 'entityManagerFactory' while setting constructor argument; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'entityManagerFactory' is defined
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)




Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: private org.wahid.cse.repository.RoleRepository org.wahid.cse.service.InitDbService.roleRepository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'roleRepository': Cannot create inner bean '(inner bean)#c08f81' of type [org.springframework.orm.jpa.SharedEntityManagerCreator] while setting bean property 'entityManager'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#c08f81': Cannot resolve reference to bean 'entityManagerFactory' while setting constructor argument; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'entityManagerFactory' is defined
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)
... 22 more


Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'roleRepository': Cannot create inner bean '(inner bean)#c08f81' of type [org.springframework.orm.jpa.SharedEntityManagerCreator] while setting bean property 'entityManager'; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#c08f81': Cannot resolve reference to bean 'entityManagerFactory' while setting constructor argument; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No bean named 'entityManagerFactory' is defined
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:290)
at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:129)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1456)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1197)
at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:480)
... 24 more

这是我的 ApplicationContext.xml 文件

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jdbc="http://www.springframework.org/schema/jdbc"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:jpa="http://www.springframework.org/schema/data/jpa"
xsi:schemaLocation="http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-4.0.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa-1.3.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd">


<context:component-scan base-package="org.wahid.cse">
<context:exclude-filter type="annotation"
expression="org.springframework.stereotype.Controller" />
</context:component-scan>


<bean id="dataSource" class="org.apache.commons.dbcp2.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/jba" />
<property name="username" value="root" />
<property name="password" value="" />
</bean>
<bean id="emf"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="packagesToScan" value="org.wahid.cse.entity" />
<property name="dataSource" ref="dataSource" />


<property name="jpaProperties">
<props>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">create</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
</props>
</property>


<property name="persistenceProvider">
<bean class="org.hibernate.jpa.HibernatePersistenceProvider"></bean>
</property>


</bean>
<tx:annotation-driven transaction-manager="transactionManager" />


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

下面是 pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.ferdous.wahid</groupId>
<artifactId>java-blog-aggregator</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>




<!-- Shared version number properties -->
<properties>
<org.springframework.version>4.0.5.RELEASE</org.springframework.version>
<apache.tiles>3.0.4</apache.tiles>
<servlet-api-version>3.1.0</servlet-api-version>


</properties>


<dependencies>


<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-dbcp2</artifactId>
<version>2.0.1</version>
</dependency>






<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.31</version>
</dependency>






<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>1.6.1.RELEASE</version>
</dependency>


<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>4.3.5.Final</version>
</dependency>


<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>${servlet-api-version}</version>
<scope>provided</scope>
</dependency>




<!-- <dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>javax.servlet.jsp-api</artifactId>
<version>2.2.1</version> </dependency> -->


<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>




<dependency>
<groupId>org.apache.tiles</groupId>
<artifactId>tiles-core</artifactId>
<version>${apache.tiles}</version>
</dependency>


<dependency>
<groupId>org.apache.tiles</groupId>
<artifactId>tiles-jsp</artifactId>
<version>${apache.tiles}</version>
</dependency>




<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>1.7.7</version>
</dependency>




<!-- Core utilities used by other modules. Define this if you use Spring
Utility APIs (org.springframework.core.*/org.springframework.util.*) -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${org.springframework.version}</version>
</dependency>


<!-- Expression Language (depends on spring-core) Define this if you use
Spring Expression APIs (org.springframework.expression.*) -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>${org.springframework.version}</version>
</dependency>


<!-- Bean Factory and JavaBeans utilities (depends on spring-core) Define
this if you use Spring Bean APIs (org.springframework.beans.*) -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>${org.springframework.version}</version>
</dependency>


<!-- Aspect Oriented Programming (AOP) Framework (depends on spring-core,
spring-beans) Define this if you use Spring AOP APIs (org.springframework.aop.*) -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>${org.springframework.version}</version>
</dependency>


<!-- Application Context (depends on spring-core, spring-expression, spring-aop,
spring-beans) This is the central artifact for Spring's Dependency Injection
Container and is generally always defined -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${org.springframework.version}</version>
</dependency>


<!-- Various Application Context utilities, including EhCache, JavaMail,
Quartz, and Freemarker integration Define this if you need any of these integrations -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>${org.springframework.version}</version>
</dependency>


<!-- Transaction Management Abstraction (depends on spring-core, spring-beans,
spring-aop, spring-context) Define this if you use Spring Transactions or
DAO Exception Hierarchy (org.springframework.transaction.*/org.springframework.dao.*) -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${org.springframework.version}</version>
</dependency>


<!-- JDBC Data Access Library (depends on spring-core, spring-beans, spring-context,
spring-tx) Define this if you use Spring's JdbcTemplate API (org.springframework.jdbc.*) -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>${org.springframework.version}</version>
</dependency>


<!-- Object-to-Relation-Mapping (ORM) integration with Hibernate, JPA,
and iBatis. (depends on spring-core, spring-beans, spring-context, spring-tx)
Define this if you need ORM (org.springframework.orm.*) -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${org.springframework.version}</version>
</dependency>


<!-- Object-to-XML Mapping (OXM) abstraction and integration with JAXB,
JiBX, Castor, XStream, and XML Beans. (depends on spring-core, spring-beans,
spring-context) Define this if you need OXM (org.springframework.oxm.*) -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-oxm</artifactId>
<version>${org.springframework.version}</version>
</dependency>


<!-- Web application development utilities applicable to both Servlet and
Portlet Environments (depends on spring-core, spring-beans, spring-context)
Define this if you use Spring MVC, or wish to use Struts, JSF, or another
web framework with Spring (org.springframework.web.*) -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>${org.springframework.version}</version>
</dependency>


<!-- Spring MVC for Servlet Environments (depends on spring-core, spring-beans,
spring-context, spring-web) Define this if you use Spring MVC with a Servlet
Container such as Apache Tomcat (org.springframework.web.servlet.*) -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${org.springframework.version}</version>
</dependency>


<!-- Spring MVC for Portlet Environments (depends on spring-core, spring-beans,
spring-context, spring-web) Define this if you use Spring MVC with a Portlet
Container (org.springframework.web.portlet.*) -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc-portlet</artifactId>
<version>${org.springframework.version}</version>
</dependency>


<!-- Support for testing Spring applications with tools such as JUnit and
TestNG This artifact is generally always defined with a 'test' scope for
the integration testing framework and unit testing stubs -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${org.springframework.version}</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>


<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.2</version>
</plugin>


<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>


</plugins>
</build>

角色存储库是

import org.springframework.data.jpa.repository.JpaRepository;
import org.wahid.cse.entity.Role;


public interface RoleRepository extends JpaRepository<Role, Integer>{


}
178730 次浏览
小开

在应用程序上下文中，将具有 id 的 bean 从 emf更改为 entityManagerFactory:

<bean id="emf"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="packagesToScan" value="org.wahid.cse.entity" />
<property name="dataSource" ref="dataSource" />


<property name="jpaProperties">
<props>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">create</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
</props>
</property>


<property name="persistenceProvider">
<bean class="org.hibernate.jpa.HibernatePersistenceProvider"></bean>
</property>


</bean>

敬

<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="packagesToScan" value="org.wahid.cse.entity" />
<property name="dataSource" ref="dataSource" />


<property name="jpaProperties">
<props>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">create</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
</props>
</property>


<property name="persistenceProvider">
<bean class="org.hibernate.jpa.HibernatePersistenceProvider"></bean>
</property>


</bean>
小开
最佳答案

SpringDataJPA 默认情况下查找名为 entityManagerFactory的 EntityManagerFactory。检查 EnableJpaRepositories的 Javadoc 的 这个部分或 Spring Data 的 Table 2.1部分 JPA文件。

这意味着您要么将 emf bean 重命名为 entityManagerFactory，要么将 Spring 配置更改为:

<jpa:repositories base-package="your.package" entity-manager-factory-ref="emf" />

(如果使用 XML)

或者

@EnableJpaRepositories(basePackages="your.package", entityManagerFactoryRef="emf")

(如果您正在使用 JavaConfig)

小开

在从 spring-boot-starter-data-jpa版本迁移之后，我遇到了这个问题。1.5.7到2.0.2(从旧的休眠状态到休眠状态5.2)。在我的 @Configuration课上，我注射了 entityManagerFactory和 transactionManager。

//I've got my data source defined in application.yml config file,
//so there is no need to configure it from java.
@Autowired
DataSource dataSource;


@Bean
public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
//JpaVendorAdapteradapter can be autowired as well if it's configured in application properties.
HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
vendorAdapter.setGenerateDdl(false);


LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean();
factory.setJpaVendorAdapter(vendorAdapter);
//Add package to scan for entities.
factory.setPackagesToScan("com.company.domain");
factory.setDataSource(dataSource);
return factory;
}


@Bean
public PlatformTransactionManager transactionManager(EntityManagerFactory entityManagerFactory) {
JpaTransactionManager txManager = new JpaTransactionManager();
txManager.setEntityManagerFactory(entityManagerFactory);
return txManager;
}

还要记住将 hibernate-entitymanager 依赖项添加到 pom.xml 中，否则在类路径中将找不到 EntityManagerFactory:

<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.0.12.Final</version>
</dependency>
小开

我认为这与新版本的 Spring 启动加上使用 Spring 数据 JPA 有关。 只需替换 public LocalContainerEntityManagerFactoryBean entityManagerFactory()的 @Bean注释即可 到 @Bean(name="entityManagerFactory")

确定 bean 的名称应该可以解决这个问题。

小开

我也有同样的问题，通过删除.m2 maven repo (C: Users user. m2)解决了这个问题

小开

在将 spring boot 1.5.2迁移到2.0.4时出现了这个问题。 我没有创建 bean，而是在主类中使用了 @EnableAutoConfiguration，它解决了我的问题。

小开

在我的特殊情况下，我似乎已经错过了依赖性

 <!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.1.3.RELEASE</version>
</dependency>
小开

刚刚把 Springboot 的版本升级到2.1.3，我就成功了

小开

也许能帮到别人。 对我来说，以上的解决方案都不起作用，所以我进入文件夹，我的项目是位于删除。想法文件夹，导入我的项目再次运行-mvn clean install. 之后一切都很顺利。 我在用智力 J。


提交答案