使用 Apache Derby 作为嵌入式数据库的 Spring-boot 错误 [英] Spring-boot error using Apache Derby as embedded database

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本文介绍了使用 Apache Derby 作为嵌入式数据库的 Spring-boot 错误的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

我是使用 spring boot 的新手.我正在尝试使用 apache derby 作为嵌入式数据库创建 REST API，但出现此错误:

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:

创建名为 'entityManagerFactory' 的 bean 时出错".

"Error creating bean with name 'entityManagerFactory'".

pom.xml :

http://maven.apache.org/xsd/maven-4.0.0.xsd">4.0.0

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>

控制器:

@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);
}

}

商务服务:

public List<Topic> getAllTopics(){
    List<Topic> topics = new ArrayList();
    topicRepository.findAll().forEach(topics::add);

    return topics;
}
public void addTopic(Topic topic){
    topicRepository.save(topic);
}

实体类存储库:

public interface TopicRepository extends CrudRepository<Topic, Long>{

}

实体类:

@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;
}

}

应用:

@SpringBootApplication
public class RestApiApplication {

public static void main(String[] args) {
    SpringApplication.run(RestApiApplication.class, args);
}

}

错误:

  .   ____          _            __ _ _
 /\\ / ___'_ __ _ _(_)_ __  __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
 \\/  ___)| |_)| | | | | || (_| |  ) ) ) )
  '  |____| .__|_| |_|_| |_\__, | / / / /
 =========|_|==============|___/=/_/_/_/
 :: 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]

我没有在 application.properties 中定义任何东西.

I didn't define anything in the application.properties.

推荐答案

异常清楚地表明您正在混合使用 Hibernate 和 JPA 库.由于跨库导入和尝试运行应用程序给了您异常.您正在尝试根据异常创建 Hibernate SessionFactory，并且您可能正在为其他导入所有 JPA 库.确保您正在导入所有 JPA 库或所有休眠库.不应该交叉导入库.请检查您的代码并确保.

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: 在类路径资源 [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaAutoConfiguration.class] 中定义名称为 'entityManagerFactory' 的 bean 创建时出错:调用 init 方法失败; 嵌套异常是 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]"

"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]"

这篇关于使用 Apache Derby 作为嵌入式数据库的 Spring-boot 错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！

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