问题
I am new to using spring boot. I am trying to create a REST API with apache derby as an embedded database but I get this error:
"Error creating bean with name 'entityManagerFactory'".
pom.xml :
http://maven.apache.org/xsd/maven-4.0.0.xsd"> 4.0.0
<groupId>com.restapi</groupId>
<artifactId>restApi</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>restApi</name>
<description>Demo project for Rest API with spring boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.2.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.apache.derby</groupId>
<artifactId>derby</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
Controller :
@RequestMapping(value="/topics")
public List<Topic> getTopics(){
return topicService.getAllTopics();
}
@RequestMapping(value="/topics",method=RequestMethod.POST)
public void addTopic(@RequestBody Topic topic){
topicService.addTopic(topic);
}
}
Business Service :
public List<Topic> getAllTopics(){
List<Topic> topics = new ArrayList();
topicRepository.findAll().forEach(topics::add);
return topics;
}
public void addTopic(Topic topic){
topicRepository.save(topic);
}
Entity Class Repository:
public interface TopicRepository extends CrudRepository<Topic, Long>{
}
Entity Class:
@Entity
public class Topic {
@Id
@GeneratedValue
private Long id;
private String name;
private String description;
public Topic(){
}
public Topic(Long id, String name, String description) {
super();
this.id = id;
this.name = name;
this.description = description;
}
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getDescription() {
return description;
}
public void setDescription(String description) {
this.description = description;
}
}
Application:
@SpringBootApplication
public class RestApiApplication {
public static void main(String[] args) {
SpringApplication.run(RestApiApplication.class, args);
}
}
Error:
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v1.5.2.RELEASE)
2017-04-05 20:11:15.788 INFO 8756 --- [ main] com.restapi.RestApiApplicationTests : Starting RestApiApplicationTests on DESKTOP-8C6TQN1 with PID 8756 (started by mahid in C:\Users\mahid\Documents\NetBeansProjects\restApi)
2017-04-05 20:11:15.788 INFO 8756 --- [ main] com.restapi.RestApiApplicationTests : No active profile set, falling back to default profiles: default
2017-04-05 20:11:15.865 INFO 8756 --- [ main] o.s.w.c.s.GenericWebApplicationContext : Refreshing org.springframework.web.context.support.GenericWebApplicationContext@702b8b12: startup date [Wed Apr 05 20:11:15 CDT 2017]; root of context hierarchy
2017-04-05 20:11:17.915 INFO 8756 --- [ main] trationDelegate$BeanPostProcessorChecker : Bean 'org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration' of type [org.springframework.transaction.annotation.ProxyTransactionManagementConfiguration$$EnhancerBySpringCGLIB$$c3650505] is not eligible for getting processed by all BeanPostProcessors (for example: not eligible for auto-proxying)
2017-04-05 20:11:19.282 INFO 8756 --- [ main] j.LocalContainerEntityManagerFactoryBean : Building JPA container EntityManagerFactory for persistence unit 'default'
2017-04-05 20:11:19.315 INFO 8756 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [
name: default
...]
2017-04-05 20:11:19.432 INFO 8756 --- [ main] org.hibernate.Version : HHH000412: Hibernate Core {5.0.12.Final}
2017-04-05 20:11:19.435 INFO 8756 --- [ main] org.hibernate.cfg.Environment : HHH000206: hibernate.properties not found
2017-04-05 20:11:19.439 INFO 8756 --- [ main] org.hibernate.cfg.Environment : HHH000021: Bytecode provider name : javassist
2017-04-05 20:11:19.506 INFO 8756 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.0.1.Final}
2017-04-05 20:11:19.777 INFO 8756 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.DerbyDialect
2017-04-05 20:11:19.784 WARN 8756 --- [ main] org.hibernate.dialect.DerbyDialect : HHH000430: The DerbyDialect dialect has been deprecated; use one of the version-specific dialects instead
2017-04-05 20:11:20.476 WARN 8756 --- [ main] o.s.w.c.s.GenericWebApplicationContext : Exception encountered during context initialization - cancelling refresh attempt: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory
2017-04-05 20:11:20.491 INFO 8756 --- [ main] utoConfigurationReportLoggingInitializer :
Error starting ApplicationContext. To display the auto-configuration report re-run your application with 'debug' enabled.
2017-04-05 20:11:20.491 ERROR 8756 --- [ main] o.s.boot.SpringApplication : Application startup failed
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1628) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:555) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:483) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1081) ~[spring-context-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:856) ~[spring-context-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:542) ~[spring-context-4.3.7.RELEASE.jar:4.3.7.RELEASE]
at
org.springframework.boot.SpringApplication.refresh(SpringApplication.java:737) ~[spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
at
org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:370) ~[spring-boot-1.5.2.RELEASE.jar:1.5.2.RELEASE]
I didn't define anything in the application.properties.
回答1:
The exception clearly tell that you are mixing both hibernate as well as JPA libraries. Because of cross library importing and trying to run application gave you exception. You are trying to create Hibernate SessionFactory according to exception and you might be importing all JPA libraries for other. Make Sure you are importing all JPA libraries or all hibernate libraries. There shouldn't be cross importing of libraries. Please go through your code and make sure.
"org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build Hibernate SessionFactory at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1628) ~[spring-beans-4.3.7.RELEASE.jar:4.3.7.RELEASE]"
回答2:
Step 1 -> use the updated version of parent artifact.
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.6.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
Step 2 -> update your Maven project (ALT+F5)
回答3:
As you are referencing tutorial videos and I believe you are using Stereotype Annotations in your Business Service Class as @Service. Please configure the "application.properties", spring boot need it to configure datasource and other underlying functions. I've configured like below. Please make change to the configuration as per your requirement. I'm also using embedded derby database and got same exception. I solved by adding configuration in application.properties file.
#PROFILES
spring.profiles.active=dev
#JPA (JpaBaseConfiguration, HibernateJpaAutoConfiguration)
spring.jpa.generate-ddl=true
spring.jpa.hibernate.ddl-auto=update
spring.jpa.database=default
spring.jpa.show-sql=true
#DATASOURCE (DataSourceAutoConfiguration & DataSourceProperties)
spring.datasource.continue-on-error=false
spring.datasource.generate-unique-name=false
来源：https://stackoverflow.com/questions/43244109/spring-boot-error-using-apache-derby-as-embedded-database