HibernateException：当'hibernate.dialect'未设置但对另一台机器没有问题时，对DialectResolutionInfo的访问不能为空 [英] HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set but works on another machine with no issue

问题描述

我有这个项目在另一台机器上完美工作。我决定在另一个工作上更进一步，我得到了以下错误：

 原因：org.springframework.beans .factory.BeanCreationException：无法自动装入字段：com.services.contact.ContactService com.controller.ContactController.contactService;嵌套异常是org.springframework.beans.factory.BeanCreationException：创建名为'contactServiceImpl'的bean时出错：注入自动装配依赖失败;嵌套异常是org.springframework.beans.factory.BeanCreationException：无法自动装入字段：com.repository.ContactRepository com.services.contact.ContactServiceImpl.contactRepository;嵌套异常是org.springframework.beans.factory.BeanCreationException：创建名为'contactRepository'的bean时出错：无法在设置bean时创建内部bean'（内部bean）＃627d8516'[org.springframework.orm.jpa.SharedEntityManagerCreator]类型属性'entityManager';嵌套异常是org.springframework.beans.factory.BeanCreationException：创建名称为'（内部bean）＃627d8516'的bean时出错：设置构造函数参数时无法解析对bean'entityManagerFactory'的引用;嵌套异常是org.springframework.beans.factory.BeanCreationException：在类路径资源[com / configuration / JpaConfig.class]中定义的名为'entityManagerFactory'的bean创建时出错：通过工厂方法的Bean实例化失败;嵌套异常是org.springframework.beans.BeanInstantiationException：无法实例化[javax.persistence.EntityManagerFactory]：工厂方法'entityManagerFactory'抛出异常;嵌套异常是org.hibernate.HibernateException：当'hibernate.dialect'未在org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor $ AutowiredFieldElement.inject（AutowiredAnnotationBeanPostProcessor.java:573）中设置
时，DialectResolutionInfo的访问不能为null 〜[spring-beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.annotation.InjectionMetadata.inject（InjectionMetadata.java:88）〜[spring-beans -4.2.5.RELEASE.jar：4.2.5.RELEASE] 
在org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues（AutowiredAnnotationBeanPostProcessor.java:331）〜[spring-beans-4.2.5。 RELEASE.jar：4.2.5.RELEASE] 
 ... 22个常见框架省略
引起：org.springframework.beans.factory.BeanCreationException：创建名为'contactServiceImpl'的bean时出错：自动注入依赖关系失败;嵌套异常是org.springframework.beans.factory.BeanCreationException：无法自动装入字段：com.repository.ContactRepository com.services.contact.ContactServiceImpl.contactRepository;嵌套异常是org.springframework.beans.factory.BeanCreationException：创建名为'contactRepository'的bean时出错：无法在设置bean时创建内部bean'（内部bean）＃627d8516'[org.springframework.orm.jpa.SharedEntityManagerCreator]类型属性'entityManager';嵌套异常是org.springframework.beans.factory.BeanCreationException：创建名称为'（内部bean）＃627d8516'的bean时出错：设置构造函数参数时无法解析对bean'entityManagerFactory'的引用;嵌套异常是org.springframework.beans.factory.BeanCreationException：在类路径资源[com / configuration / JpaConfig.class]中定义的名为'entityManagerFactory'的bean创建时出错：通过工厂方法的Bean实例化失败;嵌套异常是org.springframework.beans.BeanInstantiationException：无法实例化[javax.persistence.EntityManagerFactory]：工厂方法'entityManagerFactory'抛出异常;嵌套异常是org.hibernate.HibernateException：当'hibernate.dialect'未在org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues（AutowiredAnnotationBeanPostProcessor.java:334）中设置
时，DialectResolutionInfo的访问不能为空[ spring-beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean（AbstractAutowireCapableBeanFactory.java:1214）〜[spring-beans-4.2 .5.RELEASE.jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:543）〜[spring-beans-4.2.5.RELEASE。 jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:482）〜[spring-beans-4.2.5.RELEASE.jar：4.2.5 .RELEASE] 
在org.springframework.beans.factory.support.AbstractB eanFactory $ 1.getObject（AbstractBeanFactory.java:306）〜[spring-beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton（ DefaultSingletonBeanRegistry.java:230）〜[spring-beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:302 ）〜[spring-beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:197）〜[spring- beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates（DefaultListableBeanFactory.java:1192）〜[spring-beans-4.2.5 .RELEASE.jar：4.2.5.RELEASE] 
在org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency（DefaultListableBeanFactory.java:1116）〜[spring-beans-4.2.5.RELEASE.jar： 4.2.5.RELEASE] 
在org.s pringframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency（DefaultListableBeanFactory.java:1014）〜[spring-beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory .annotation.AutowiredAnnotationBeanPostProcessor $ AutowiredFieldElement.inject（AutowiredAnnotationBeanPostProcessor.java:545）〜[spring-beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
 ...省略24个常用框架
由于：org.springframework.beans.factory.BeanCreationException：无法自动装载字段：com.repository.ContactRepository com.services.contact.ContactServiceImpl.contactRepository;嵌套异常是org.springframework.beans.factory.BeanCreationException：创建名为'contactRepository'的bean时出错：无法在设置bean时创建内部bean'（内部bean）＃627d8516'[org.springframework.orm.jpa.SharedEntityManagerCreator]类型属性'entityManager';嵌套异常是org.springframework.beans.factory.BeanCreationException：创建名称为'（内部bean）＃627d8516'的bean时出错：设置构造函数参数时无法解析对bean'entityManagerFactory'的引用;嵌套异常是org.springframework.beans.factory.BeanCreationException：在类路径资源[com / configuration / JpaConfig.class]中定义的名为'entityManagerFactory'的bean创建时出错：通过工厂方法的Bean实例化失败;嵌套异常是org.springframework.beans.BeanInstantiationException：无法实例化[javax.persistence.EntityManagerFactory]：工厂方法'entityManagerFactory'抛出异常;嵌套异常是org.hibernate.HibernateException：当'hibernate.dialect'未在org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor $ AutowiredFieldElement.inject（AutowiredAnnotationBeanPostProcessor.java:573）中设置
时，DialectResolutionInfo的访问不能为null 〜[spring-beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.annotation.InjectionMetadata.inject（InjectionMetadata.java:88）〜[spring-beans -4.2.5.RELEASE.jar：4.2.5.RELEASE] 
在org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues（AutowiredAnnotationBeanPostProcessor.java:331）〜[spring-beans-4.2.5。 RELEASE.jar：4.2.5.RELEASE] 
 ...省略35个常见框架
引起：org.springframework.beans.factory.BeanCreationException：创建名为'contactRepository'的bean时出错：无法创建内部bean（内部bean）＃627d8516'类型[org.springframework.orm.jpa.SharedEntityMana gerCreator]，同时设置bean属性'entityManager';嵌套异常是org.springframework.beans.factory.BeanCreationException：创建名称为'（内部bean）＃627d8516'的bean时出错：设置构造函数参数时无法解析对bean'entityManagerFactory'的引用;嵌套异常是org.springframework.beans.factory.BeanCreationException：在类路径资源[com / configuration / JpaConfig.class]中定义的名为'entityManagerFactory'的bean创建时出错：通过工厂方法的Bean实例化失败;嵌套异常是org.springframework.beans.BeanInstantiationException：无法实例化[javax.persistence.EntityManagerFactory]：工厂方法'entityManagerFactory'抛出异常;嵌套异常是org.hibernate.HibernateException：当'hibernate.dialect'未在org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean（BeanDefinitionValueResolver.java:313）中设置
时，DialectResolutionInfo的访问不能为空[ spring-beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
在org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary（BeanDefinitionValueResolver.java:129）〜[spring-beans-4.2 .5.RELEASE.jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues（AbstractAutowireCapableBeanFactory.java:1481）〜[spring-beans-4.2.5.RELEASE。 jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean（AbstractAutowireCapableBeanFactory.java:1226）〜[spring-beans-4.2.5.RELEASE.jar：4.2.5 .RELEASE] 
在org.springframework.beans.factory.support.AbstractAutowireCapableBeanFacto ry.doCreateBean（AbstractAutowireCapableBeanFactory.java:543）〜[spring-beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory .java：482）〜[spring-beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.support.AbstractBeanFactory $ 1.getObject（AbstractBeanFactory.java:306 ）〜[spring-beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
在org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton（DefaultSingletonBeanRegistry.java:230）〜[spring- beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:302）〜[spring-beans-4.2.5 .RELEASE.jar：4.2.5.RELEASE] 
在org.springframework.beans.factory.support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:197）〜[spring-beans-4.2.5.RELEASE.jar： 4.2.5.RELEASE] 
在org.springframewo rk.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates（DefaultListableBeanFactory.java:1192）〜[spring-beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory .support.DefaultListableBeanFactory.doResolveDependency（DefaultListableBeanFactory.java:1116）〜[spring-beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
位于org.springframework.beans.factory.support.DefaultListableBeanFactory。 resolveDependency（DefaultListableBeanFactory.java:1014）〜[spring-beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor $ AutowiredFieldElement.inject（AutowiredAnnotationBeanPostProcessor .java：545）〜[spring-beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
 ... 37个常见框架省略
由org.springframework.beans.factory引起.BeanCreationException：创建名为'（内部bean）＃627d8516'的bean时出错：无法在设置const时解析对bean'entityManagerFactory'的引用原型论证;嵌套异常是org.springframework.beans.factory.BeanCreationException：在类路径资源[com / configuration / JpaConfig.class]中定义的名为'entityManagerFactory'的bean创建时出错：通过工厂方法的Bean实例化失败;嵌套异常是org.springframework.beans.BeanInstantiationException：无法实例化[javax.persistence.EntityManagerFactory]：工厂方法'entityManagerFactory'抛出异常;嵌套异常是org.hibernate.HibernateException：当'hibernate.dialect'未在org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference（BeanDefinitionValueResolver.java:359）中设置
时，DialectResolutionInfo的访问不能为null [ spring-beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
在org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary（BeanDefinitionValueResolver.java:108）〜[spring-beans-4.2 .5.RELEASE.jar：4.2.5.RELEASE] 
在org.springframework.beans.factory.support.ConstructorResolver.resolveConstructorArguments（ConstructorResolver.java:634）〜[spring-beans-4.2.5.RELEASE。 jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod（ConstructorResolver.java:444）〜[spring-beans-4.2.5.RELEASE.jar：4.2.5 .RELEASE] 
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod（Abst ractAutowireCapableBeanFactory.java:1123）〜[spring-beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance（AbstractAutowireCapableBeanFactory.java:1018 ）〜[spring-beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:510）〜[spring- beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:482）〜[spring-beans-4.2.5 .RELEASE.jar：4.2.5.RELEASE] 
在org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean（BeanDefinitionValueResolver.java:299）〜[spring-beans-4.2.5.RELEASE.jar： 4.2.5.RELEASE] 
 ...省略50个常见框架
由org.springframework.beans.factory.BeanCreationException引起：创建bean with名称'entityManagerFactory'在类路径资源[com / configuration / JpaConfig.class]中定义：通过工厂方法的Bean实例化失败;嵌套异常是org.springframework.beans.BeanInstantiationException：无法实例化[javax.persistence.EntityManagerFactory]：工厂方法'entityManagerFactory'抛出异常;嵌套异常是org.hibernate.HibernateException：当'hibernate.dialect'没有在org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod（ConstructorResolver.java:599）中设置
时，DialectResolutionInfo的访问不能为null [ spring-beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod（AbstractAutowireCapableBeanFactory.java:1123）〜[spring-beans-4.2 .5.RELEASE.jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance（AbstractAutowireCapableBeanFactory.java:1018）〜[spring-beans-4.2.5.RELEASE。 jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean（AbstractAutowireCapableBeanFactory.java:510）〜[spring-beans-4.2.5.RELEASE.jar：4.2.5 .RELEASE] 
在org.springframework.beans.factory.support.AbstractAutowire CapableBeanFactory.createBean（AbstractAutowireCapableBeanFactory.java:482）〜[spring-beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.support.AbstractBeanFactory $ 1.getObject（ AbstractBeanFactory.java:306）〜[spring-beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton（DefaultSingletonBeanRegistry.java:230 ）〜[spring-beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean（AbstractBeanFactory.java:302）〜[spring- beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.support.AbstractBeanFactory.getBean（AbstractBeanFactory.java:197）〜[spring-beans-4.2.5 .RELEASE.jar：4.2.5.RELEASE] 
在org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference（BeanDefinitionValueResolver.java:351）〜[spring-beans-4.2.5.RELEASE.jar： 4.2.5.RELEASE] 
 ... 58常见省略框架
引起：org.springframework.beans.BeanInstantiationException：无法实例化[javax.persistence.EntityManagerFactory]：工厂方法'entityManagerFactory'抛出异常;嵌套异常是org.hibernate.HibernateException：当'hibernate.dialect'没有在org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate（SimpleInstantiationStrategy.java:189）设置
时，DialectResolutionInfo的访问不能为空[ spring-beans-4.2.5.RELEASE.jar：4.2.5.RELEASE] 
 at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod（ConstructorResolver.java:588）〜[spring-beans-4.2 .5.RELEASE.jar：4.2.5.RELEASE] 
 ...省略67个常用框架
引起：org.hibernate.HibernateException：当'hibernate.dialect'不能为空时，对DialectResolutionInfo的访问不能为空在org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.determineDialect中设置
（DialectFactoryImpl.java:104）〜[hibernate-core-4.3.11.Final.jar：4.3.11.Final] 
 at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.buildDialect（DialectFactoryImpl.java:71）〜[hibernate-core-4.3.11.Final.jar：4.3.11.Fina l] 
  

我会尝试包含所有重要文件：

application.properties

  spring.mail.host = stmp.gmail.com 
 spring。 mail.username = ****.******@gmail.com 
 spring.mail.password =密码
 spring.mail.port = 25 
 
 spring .datasource.url = jdbc：mysql：// localhost：3306 / personalSite 
 spring.datasource.username = root 
 
 spring.datasource.driverClassName = com.mysql.jdbc.Driver 
 spring.jpa.hibernate.ddl-auto =更新
  

JPA配置

  @Configuration 
 @EnableTransactionManagement 
 @EnableJpaRepositories（com.repository）
 public class JpaConfig {
 
 @Bean 
 public DataSource dataSource（）{
 DriverManagerDataSource dataSource = new DriverManagerDataSource（）; 
 dataSource.setDriverClassName（com.mysql.jdbc.Driver）; 
 dataSource.setUrl（jdbc：mysql：// localhost：3306 / personalSite）; 
 dataSource.setUsername（root）; 
返回dataSource; 
 
 $ b $Bean 
 public JpaVendorAdapter jpaVendorAdapter（）{
 HibernateJpaVendorAdapter jpaVendorAdapter = new HibernateJpaVendorAdapter（）; 
 
 jpaVendorAdapter.setDatabase（Database.MYSQL）; 
 jpaVendorAdapter.setGenerateDdl（true）; 
 jpaVendorAdapter.setShowSql（true）; 
 jpaVendorAdapter.setDatabasePlatform（org.hibernate.dialect.MySQL5Dialect）; 
 
返回jpaVendorAdapter; 
 
 
 $Be 
 public EntityManagerFactory entityManagerFactory（）{
 
 HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter（）; 
 vendorAdapter.setGenerateDdl（true）; 
 
 LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean（）; 
 factory.setJpaVendorAdapter（vendorAdapter）; 
 factory.setPackagesToScan（com.model）; 
 factory.setDataSource（dataSource（））; 
 factory.afterPropertiesSet（）; 
 
返回factory.getObject（）; 
 
 $ b $Bean 
 public PlatformTransactionManager transactionManager（）{
 
 JpaTransactionManager txManager = new JpaTransactionManager（）; 
 txManager.setEntityManagerFactory（entityManagerFactory（））; 
返回txManager; 
 
 
 $Be 
 HibernateJpaSessionFactoryBean sessionFactory（EntityManagerFactory emf）{
 HibernateJpaSessionFactoryBean factory = new HibernateJpaSessionFactoryBean（）; 
 factory.setEntityManagerFactory（emf）; 
退货工厂; 
} 
 
} 
 
 ContactServiceImpl 
 @Component 
 public class ContactServiceImpl实现ContactService {
 
 @Autowired 
 StmpMailSender stmpMailSender; 
 
 @Autowired 
 ContactRepository contactRepository; 
 
 private String sendTo =[e-mail]; 
 
 @Override 
 public void emailForm（Contact contact）{
 
 System.out.println（------------- ---------------------）; 
 System.out.println（我从表单获得了以下内容：）; 
 System.out.println（contact.getId（））; 
 System.out.println（contact.getName（））; 
 System.out.println（contact.getLastName（））; 
 System.out.println（contact.getEmail（））; 
 System.out.println（contact.getSubject（））; 
 System.out.println（contact.getMessage（））; 
 System.out.println（----------------------------------）; 
 
 // stmpMailSender.send（sendTo，contact.getSubject（），contact.getMessage（），contact.getEmail（））; 
 
 
 $ b @Override 
 public void submitFormToDatabase（Contact contact）{
 
 contactRepository.save（contact）; 
} 
 
} 
  

存储库

  public interface ContactRepository扩展了CrudRepository< Contact，Long> {
 
联系保存（联系人联系人）; 
 
} 
  

------------ ----- UPDATE 1 -----------------

我注意到这个非常明显的错误，但仍然困惑，因为我将它命名为数据库 personalSite ，并且我创建了与实体相同的表

  2016-03-23 20：29：03.963信息36929 --- [main] org.hibernate.Version：HHH000412：Hibernate Core {4.3.11.Final} 
 2016-03-23 20:29： 03.965 INFO 36929 --- [main] org.hibernate.cfg.Environment：HHH000206：找不到hibernate.properties 
 2016-03-23 20：29：03.967 INFO 36929 --- [main] org.hibernate。 cfg.Environment：HHH000021：字节码提供程序名称：javassist 
 2016-03-23 20：29：04.226信息36929 --- [main] o.hibernate.annotations.common.Version：HCANN000001：Hibernate Commons Annotations {4.0 .5.Final} 
 2016-03-23 20：29：04.479 WARN 36929 --- [main] ohejdbc.internal.JdbcServicesImpl ：HHH000342：无法获取连接到查询元数据：未知数据库'personalsite'
  

解决方案< Hibernate.Dialect在您的代码中缺失。以下是您的配置类的entityManagerFactory（）方法下的修复。

factory.setJpaProperties（additionalProperties（））; 可以帮助您添加Hibernate.Dialect。因为你的数据库是mySQL，mySQL的hibernate.dialect是org.hibernate.dialect.MySQLDialect

  public EntityManagerFactory entityManagerFactory（）{
 
 HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter（）; 
 vendorAdapter.setGenerateDdl（true）; 
 
 LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean（）; 
 factory.setJpaVendorAdapter（vendorAdapter）; 
 factory.setPackagesToScan（com.model）; 
 factory.setDataSource（dataSource（））; 
 factory.afterPropertiesSet（）; 
 factory.setJpaProperties（additionalProperties（））; 
返回factory.getObject（）; 
 
 
 
属性additionalProperties（）{
属性properties = new Properties（）; 
 properties.setProperty（hibernate.dialect，org.hibernate.dialect.MySQLDialect）; 
返回属性; 
} 
  

I had this project working perfectly on another machine. I decided to work on it more on another one and I am getting the below errors:

Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.services.contact.ContactService com.controller.ContactController.contactService; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'contactServiceImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.repository.ContactRepository com.services.contact.ContactServiceImpl.contactRepository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'contactRepository': Cannot create inner bean '(inner bean)#627d8516' 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)#627d8516': Cannot resolve reference to bean 'entityManagerFactory' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [com/configuration/JpaConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.persistence.EntityManagerFactory]: Factory method 'entityManagerFactory' threw exception; nested exception is org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:573) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    ... 22 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'contactServiceImpl': Injection of autowired dependencies failed; nested exception is org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.repository.ContactRepository com.services.contact.ContactServiceImpl.contactRepository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'contactRepository': Cannot create inner bean '(inner bean)#627d8516' 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)#627d8516': Cannot resolve reference to bean 'entityManagerFactory' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [com/configuration/JpaConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.persistence.EntityManagerFactory]: Factory method 'entityManagerFactory' threw exception; nested exception is org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:334) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1214) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1192) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1116) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    ... 24 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Could not autowire field: com.repository.ContactRepository com.services.contact.ContactServiceImpl.contactRepository; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'contactRepository': Cannot create inner bean '(inner bean)#627d8516' 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)#627d8516': Cannot resolve reference to bean 'entityManagerFactory' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [com/configuration/JpaConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.persistence.EntityManagerFactory]: Factory method 'entityManagerFactory' threw exception; nested exception is org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:573) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.annotation.InjectionMetadata.inject(InjectionMetadata.java:88) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:331) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    ... 35 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'contactRepository': Cannot create inner bean '(inner bean)#627d8516' 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)#627d8516': Cannot resolve reference to bean 'entityManagerFactory' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [com/configuration/JpaConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.persistence.EntityManagerFactory]: Factory method 'entityManagerFactory' threw exception; nested exception is org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:313) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:129) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyPropertyValues(AbstractAutowireCapableBeanFactory.java:1481) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1226) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:543) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.findAutowireCandidates(DefaultListableBeanFactory.java:1192) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1116) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1014) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor$AutowiredFieldElement.inject(AutowiredAnnotationBeanPostProcessor.java:545) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    ... 37 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name '(inner bean)#627d8516': Cannot resolve reference to bean 'entityManagerFactory' while setting constructor argument; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [com/configuration/JpaConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.persistence.EntityManagerFactory]: Factory method 'entityManagerFactory' threw exception; nested exception is org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:359) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveValueIfNecessary(BeanDefinitionValueResolver.java:108) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.resolveConstructorArguments(ConstructorResolver.java:634) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:444) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1123) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1018) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveInnerBean(BeanDefinitionValueResolver.java:299) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    ... 50 common frames omitted
Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [com/configuration/JpaConfig.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.persistence.EntityManagerFactory]: Factory method 'entityManagerFactory' threw exception; nested exception is org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:599) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1123) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1018) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:510) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.BeanDefinitionValueResolver.resolveReference(BeanDefinitionValueResolver.java:351) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    ... 58 common frames omitted
Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.persistence.EntityManagerFactory]: Factory method 'entityManagerFactory' threw exception; nested exception is org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
    at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:189) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:588) ~[spring-beans-4.2.5.RELEASE.jar:4.2.5.RELEASE]
    ... 67 common frames omitted
Caused by: org.hibernate.HibernateException: Access to DialectResolutionInfo cannot be null when 'hibernate.dialect' not set
    at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.determineDialect(DialectFactoryImpl.java:104) ~[hibernate-core-4.3.11.Final.jar:4.3.11.Final]
    at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:71) ~[hibernate-core-4.3.11.Final.jar:4.3.11.Final]

I will try to include all the important files:

application.properties

spring.mail.host = stmp.gmail.com
spring.mail.username = ****.******@gmail.com 
spring.mail.password = password
spring.mail.port=25

spring.datasource.url= jdbc:mysql://localhost:3306/personalSite
spring.datasource.username=root

spring.datasource.driverClassName=com.mysql.jdbc.Driver
spring.jpa.hibernate.ddl-auto=update

JPA configuration

@Configuration
@EnableTransactionManagement
@EnableJpaRepositories("com.repository")
public class JpaConfig {

    @Bean
    public DataSource dataSource() {
        DriverManagerDataSource dataSource = new DriverManagerDataSource();
        dataSource.setDriverClassName("com.mysql.jdbc.Driver");
        dataSource.setUrl("jdbc:mysql://localhost:3306/personalSite");
        dataSource.setUsername("root");
        return dataSource;
    }

    @Bean
    public JpaVendorAdapter jpaVendorAdapter() {
        HibernateJpaVendorAdapter jpaVendorAdapter = new HibernateJpaVendorAdapter();

        jpaVendorAdapter.setDatabase(Database.MYSQL);
        jpaVendorAdapter.setGenerateDdl(true);
        jpaVendorAdapter.setShowSql(true);
        jpaVendorAdapter.setDatabasePlatform("org.hibernate.dialect.MySQL5Dialect");

        return jpaVendorAdapter;
    }

    @Bean
    public EntityManagerFactory entityManagerFactory() {

        HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
        vendorAdapter.setGenerateDdl(true);

        LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean();
        factory.setJpaVendorAdapter(vendorAdapter);
        factory.setPackagesToScan("com.model");
        factory.setDataSource(dataSource());
        factory.afterPropertiesSet();

        return factory.getObject();
    }

    @Bean
    public PlatformTransactionManager transactionManager() {

        JpaTransactionManager txManager = new JpaTransactionManager();
        txManager.setEntityManagerFactory(entityManagerFactory());
        return txManager;
    }

    @Bean
    public HibernateJpaSessionFactoryBean sessionFactory(EntityManagerFactory emf) {
        HibernateJpaSessionFactoryBean factory = new HibernateJpaSessionFactoryBean();
        factory.setEntityManagerFactory(emf);
        return factory;
    }

}

ContactServiceImpl
@Component
public class ContactServiceImpl implements ContactService {

    @Autowired
    StmpMailSender stmpMailSender;

    @Autowired
    ContactRepository contactRepository;

    private String sendTo = "[e-mail]";

    @Override
    public void emailForm(Contact contact) {

        System.out.println("----------------------------------");
        System.out.println("I got the following from the form:");
        System.out.println(contact.getId());
        System.out.println(contact.getName());
        System.out.println(contact.getLastName());
        System.out.println(contact.getEmail());
        System.out.println(contact.getSubject());
        System.out.println(contact.getMessage());
        System.out.println("----------------------------------");

       // stmpMailSender.send(sendTo,contact.getSubject(),contact.getMessage(),contact.getEmail());

    }

    @Override
    public void submitFormToDatabase(Contact contact){

        contactRepository.save(contact);
    }

}

Repository

public interface ContactRepository extends CrudRepository<Contact,Long> {

    Contact save(Contact contact);

}

-----------------UPDATE 1-----------------

I noticed this very obvious error but still confused because I name it the database personalSite and I created the table too same as the entity

2016-03-23 20:29:03.963  INFO 36929 --- [           main] org.hibernate.Version                    : HHH000412: Hibernate Core {4.3.11.Final}
2016-03-23 20:29:03.965  INFO 36929 --- [           main] org.hibernate.cfg.Environment            : HHH000206: hibernate.properties not found
2016-03-23 20:29:03.967  INFO 36929 --- [           main] org.hibernate.cfg.Environment            : HHH000021: Bytecode provider name : javassist
2016-03-23 20:29:04.226  INFO 36929 --- [           main] o.hibernate.annotations.common.Version   : HCANN000001: Hibernate Commons Annotations {4.0.5.Final}
2016-03-23 20:29:04.479  WARN 36929 --- [           main] o.h.e.jdbc.internal.JdbcServicesImpl     : HHH000342: Could not obtain connection to query metadata : Unknown database 'personalsite'

解决方案

Hibernate.Dialect is missing in your code. Below is the fix under entityManagerFactory() method of your configuration class.

factory.setJpaProperties(additionalProperties()); help you to add Hibernate.Dialect. As your database is mySQL, the hibernate.dialect for mySQL is "org.hibernate.dialect.MySQLDialect"

@Bean
    public EntityManagerFactory entityManagerFactory() {

        HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
        vendorAdapter.setGenerateDdl(true);

        LocalContainerEntityManagerFactoryBean factory = new LocalContainerEntityManagerFactoryBean();
        factory.setJpaVendorAdapter(vendorAdapter);
        factory.setPackagesToScan("com.model");
        factory.setDataSource(dataSource());
        factory.afterPropertiesSet();
        factory.setJpaProperties(additionalProperties());
        return factory.getObject();
    }


Properties additionalProperties() {
        Properties properties = new Properties();       
        properties.setProperty("hibernate.dialect", "org.hibernate.dialect.MySQLDialect");
        return properties;
    }

这篇关于HibernateException：当'hibernate.dialect'未设置但对另一台机器没有问题时，对DialectResolutionInfo的访问不能为空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！