Spring data jpa-未定义名为“entityManagerFactory”的bean；注入自动装配的依赖项失败
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【中文标题】Spring data jpa-未定义名为“entityManagerFactory”的bean；注入自动装配的依赖项失败【英文标题】：Spring data jpa- No bean named 'entityManagerFactory' is defined; Injection of autowired dependencies failed 【发布时间】：2014-08-22 14:57:58 【问题描述】：我正在使用 spring data jpa、hibernate、mysql、tomcat7、maven 开发应用程序，它创建了错误。我试图弄清楚但我失败了。
错误是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；自动装配依赖注入失败
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>
这里是 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>
RoleRepository 是
import org.springframework.data.jpa.repository.JpaRepository;
import org.wahid.cse.entity.Role;
public interface RoleRepository extends JpaRepository<Role, Integer>
【问题讨论】：
你能把RoleRepository的代码贴出来吗？
RoleRepository 发布...
谢谢！我看到您正在使用 Spring Data JPA，但我没有看到您在哪里配置它。有没有你没有发布的 Spring 配置？
将 bean id 从“emf”更改为“entityManagerFactory”将解决该问题，因为 Spring Data JPA 默认查找名为“entityManagerFactory”的 Bean。但是，如果您真的想将任何 NON-DEFAULT 命名的 bean 绑定为实体管理器因素，那么“geoand”给出的答案就是您应该更改内容的确切方式。希望它有助于澄清理解，因为您已经解决了问题:-)
我能够在我的 Mvc 测试类中解决这个问题，方法是将 @WebMvcTest 替换为 @SpringBootTest 和 @AutoConfigureMockMvc
【参考方案1】：
Spring Data JPA 默认查找名为 entityManagerFactory 的 EntityManagerFactory。查看EnableJpaRepositories 的Javadoc 的this 部分或Spring Data JPA documentation 的Table 2.1。
这意味着您要么必须将 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" />
（如果您使用的是 XML）
或
@EnableJpaRepositories(basePackages="your.package", entityManagerFactoryRef="emf")
（如果您使用的是 Java 配置）
【讨论】：
另外，如果您有自定义事务管理器 bean 名称，请不要忘记设置它。对于 Java 配置：@EnableJpaRepositories(transactionManagerRef="myTransactionManagerBeanName") 【参考方案2】：
将 spring boot 1.5.2 迁移到 2.0.4 时出现此问题。
我没有创建 bean，而是在主类中使用了 @EnableAutoConfiguration，它解决了我的问题。
【讨论】：
这已经包含在@SpringBootApplication中了。【参考方案3】：
在您的应用程序上下文中，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>
到
<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>
【讨论】：
谢谢。您通过遵循“在您的应用程序上下文中，将具有 id 的 bean 从 emf 更改为 entityManagerFactory”解决了我的问题。问候。 我们可以为基于注释的示例使用什么？我正面临确切的问题 @javaHelper 看看上面 geoand 的回答。他展示了解决 Java 配置问题的一种方法。如果您仍然不清楚或遇到问题，请提出一个新问题，我可以通过提供适当的代码来帮助您（在评论中很难做到这一点）。【参考方案4】：从spring-boot-starter-data-jpa 版本迁移后我遇到了这个问题。 1.5.7 到 2.0.2（从旧休眠到休眠 5.2）。在我的@Configuration 类中，我注入了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;
还要记得在 pom.xml 中添加 hibernate-entitymanager 依赖，否则在类路径中找不到 EntityManagerFactory：
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.0.12.Final</version>
</dependency>
【讨论】：
【参考方案5】：我认为这与较新版本的spring boot plus使用spring data JPA有关。
只需将@Bean 注释替换为public LocalContainerEntityManagerFactoryBean entityManagerFactory()
到
@Bean(name="entityManagerFactory")
确定 bean 的名称应该可以解决问题。
【讨论】：
【参考方案6】：它可能对某人有所帮助。
对我来说，上述解决方案都不起作用，所以我进入我的项目所在的文件夹，删除了 .idea 文件夹，再次导入我的项目并运行 - mvn clean install.
在此之后一切正常。
我正在使用 IntellJ。
【讨论】：
【参考方案7】：我遇到了同样的问题，并通过删除 .m2 maven repo (C:\Users\user\ .m2) 解决了它
【讨论】：
什么？怎么解决？【参考方案8】：在我的具体情况下，我似乎缺少依赖项
<!-- https://mvnrepository.com/artifact/org.springframework/spring-jdbc -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>5.1.3.RELEASE</version>
</dependency>
【讨论】：
【参考方案9】：刚刚将 springboot 版本更新到 2.1.3，它对我有用
【讨论】：
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