无法将名称[org.hibernate.dialect.MySQL5Dialect ]解析为策略[org.hibernate.dialect.Dialect]
无法将名称[org.hibernate.dialect.MySQL5Dialect ]解析为策略[org.hibernate.dialect.Dialect]
提问于 2015-11-04 10:34:35
我是春季应用程序的新成员。运行我的项目来创建基于我创建的类的数据库对象，我得到了以下错误：
Exception in thread "main" 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 org.hibernate.boot.registry.selector.spi.StrategySelectionException: Unable to resolve name [org.hibernate.dialect.MySQL5Dialect ] as strategy [org.hibernate.dialect.Dialect]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1572)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476)
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303)
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230)
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194)
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:960)
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:749)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480)
at org.springframework.boot.context.embedded.EmbeddedWebApplicationContext.refresh(EmbeddedWebApplicationContext.java:117)
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:689)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:321)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:969)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:958)
at com.krypton.smartImmo.SmartImmoApplication.main(SmartImmoApplication.java:10)
Caused by: org.hibernate.boot.registry.selector.spi.StrategySelectionException: Unable to resolve name [org.hibernate.dialect.MySQL5Dialect ] as strategy [org.hibernate.dialect.Dialect]
at org.hibernate.boot.registry.selector.internal.StrategySelectorImpl.selectStrategyImplementor(StrategySelectorImpl.java:128)
at org.hibernate.boot.registry.selector.internal.StrategySelectorImpl.resolveDefaultableStrategy(StrategySelectorImpl.java:155)
at org.hibernate.boot.registry.selector.internal.StrategySelectorImpl.resolveStrategy(StrategySelectorImpl.java:136)
at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.constructDialect(DialectFactoryImpl.java:78)
at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:68)
at org.hibernate.engine.jdbc.internal.JdbcServicesImpl.configure(JdbcServicesImpl.java:165)
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:111)在application.properties中，我有以下有关hibernate的设置
spring.jpa.hibernate.naming-strategy = org.hibernate.cfg.ImprovedNamingStrategy
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5Dialect 回答 4
Stack Overflow用户
回答已采纳
发布于 2015-11-04 11:00:38
由于您的错误消息在末尾包含了可疑的额外空间：
Unable to resolve name [org.hibernate.dialect.MySQL5Dialect ]我会大胆猜测，在你的方言财产的末尾，你还有一个额外的空间。
所以去找
"org.hibernate.dialect.MySQL5Dialect "并将其改为：
"org.hibernate.dialect.MySQL5Dialect"Stack Overflow用户
发布于 2022-05-01 08:16:17
我也面临着同样的问题，不需要在属性文件中声明任何方言，移除方言属性后，它就可以正常工作了。
我的依赖关系：
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.6.7</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.6.7</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>应用属性：
spring.datasource.name =test
spring.datasource.url=jdbc:mysql://localhost:3306/myDB
spring.datasource.username=root
spring.datasource.password=root
#spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
#spring.jpa.properties.hibernate.dialect=org.hibernate.deialect.MySql5InnoDBDialect
#spring.jpa.hibernate.naming-strategy = org.hibernate.cfg.ImprovedNamingStrategy
#spring.jpa.properties.hibernate.dialect=org.hibernate.deialect.MySql55Dialect
spring.datasource.hikari.maximum-pool-size=10
##spring.jpa.hibernate.ddl-auto=updates`Stack Overflow用户
发布于 2022-07-08 07:03:16
实际上，如果你的方言名称是正确的，空间就不是问题。但是，正如Rajiv 所说，不需要显式指定方言，springboot会自动为您指定方言。
我用STS ide来做这件事。
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原文链接：
https://stackoverflow.com/questions/33519572
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