Java 无法在spring boot中连接到mySql_Java_Mysql_Hibernate_Spring Boot

Java 无法在spring boot中连接到mySql

java mysql hibernate spring-boot

Java 无法在spring boot中连接到mySql,java,mysql,hibernate,spring-boot,Java,Mysql,Hibernate,Spring Boot,我正在使用jpa创建一个spring引导应用程序，但无法找到这一问题的根本原因。但当我作为java应用程序运行时，我在控制台中遇到以下错误，不可能在db中创建表。我尝试删除m2存储库并尝试重新构建，但仍然是一样的。有人能帮忙吗 The Class-Path manifest attribute in C:\Users\Aditya.Jadhav\.m2\repository\org\glassfish\jaxb\jaxb-runtime\2.3.2\jaxb-runtime-2.3.2.jar

我正在使用jpa创建一个spring引导应用程序，但无法找到这一问题的根本原因。但当我作为java应用程序运行时，我在控制台中遇到以下错误，不可能在db中创建表。我尝试删除m2存储库并尝试重新构建，但仍然是一样的。有人能帮忙吗

 The Class-Path manifest attribute in C:\Users\Aditya.Jadhav\.m2\repository\org\glassfish\jaxb\jaxb-runtime\2.3.2\jaxb-runtime-2.3.2.jar referenced one or more files that do not exist: file:/C:/Users/Aditya.Jadhav/.m2/repository/org/glassfish/jaxb/jaxb-runtime/2.3.2/jakarta.xml.bind-api-2.3.2.jar,file:/C:/Users/Aditya.Jadhav/.m2/repository/org/glassfish/jaxb/jaxb-runtime/2.3.2/txw2-2.3.2.jar,file:/C:/Users/Aditya.Jadhav/.m2/repository/org/glassfish/jaxb/jaxb-runtime/2.3.2/istack-commons-runtime-3.0.8.jar,file:/C:/Users/Aditya.Jadhav/.m2/repository/org/glassfish/jaxb/jaxb-runtime/2.3.2/stax-ex-1.8.1.jar,file:/C:/Users/Aditya.Jadhav/.m2/repository/org/glassfish/jaxb/jaxb-runtime/2.3.2/FastInfoset-1.2.16.jar,file:/C:/Users/Aditya.Jadhav/.m2/repository/org/glassfish/jaxb/jaxb-runtime/2.3.2/jakarta.activation-api-1.2.1.jar

org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in class path resource [org/springframework/boot/autoconfigure/orm/jpa/HibernateJpaConfiguration.class]
 Invocation of init method failed; nested exception is org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1782) ~[spring-beans-5.2.0.M1.jar:5.2.0.M1]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:593) ~[spring-beans-5.2.0.M1.jar:5.2.0.M1]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:515) ~[spring-beans-5.2.0.M1.jar:5.2.0.M1]
    at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:320) ~[spring-beans-5.2.0.M1.jar:5.2.0.M1]
    at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:222) ~[spring-beans-5.2.0.M1.jar:5.2.0.M1]
    at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:318) ~[spring-beans-5.2.0.M1.jar:5.2.0.M1]
    at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:199) ~[spring-beans-5.2.0.M1.jar:5.2.0.M1]
    at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1105) ~[spring-context-5.2.0.M1.jar:5.2.0.M1]
    at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:867) ~[spring-context-5.2.0.M1.jar:5.2.0.M1]
    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549) ~[spring-context-5.2.0.M1.jar:5.2.0.M1]
    at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:142) ~[spring-boot-2.2.0.BUILD-SNAPSHOT.jar:2.2.0.BUILD-SNAPSHOT]
    at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:782) [spring-boot-2.2.0.BUILD-SNAPSHOT.jar:2.2.0.BUILD-SNAPSHOT]
    at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:404) [spring-boot-2.2.0.BUILD-SNAPSHOT.jar:2.2.0.BUILD-SNAPSHOT]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:319) [spring-boot-2.2.0.BUILD-SNAPSHOT.jar:2.2.0.BUILD-SNAPSHOT]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1275) [spring-boot-2.2.0.BUILD-SNAPSHOT.jar:2.2.0.BUILD-SNAPSHOT]
    at org.springframework.boot.SpringApplication.run(SpringApplication.java:1263) [spring-boot-2.2.0.BUILD-SNAPSHOT.jar:2.2.0.BUILD-SNAPSHOT]
    at com.bookstore.BookstoreApplication.main(BookstoreApplication.java:10) [classes/:na]
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_201]
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_201]
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) ~[na:1.8.0_201]
    at java.lang.reflect.Method.invoke(Unknown Source) ~[na:1.8.0_201]
    at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) [spring-boot-devtools-2.2.0.BUILD-SNAPSHOT.jar:2.2.0.BUILD-SNAPSHOT]
Caused by: org.hibernate.service.spi.ServiceException: Unable to create requested service [org.hibernate.engine.jdbc.env.spi.JdbcEnvironment]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:275) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:152) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:286) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:243) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:175) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:118) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:900) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:931) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:57) ~[spring-orm-5.2.0.M1.jar:5.2.0.M1]
    at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.2.0.M1.jar:5.2.0.M1]
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:390) ~[spring-orm-5.2.0.M1.jar:5.2.0.M1]
    at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:377) ~[spring-orm-5.2.0.M1.jar:5.2.0.M1]
    at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) ~[spring-orm-5.2.0.M1.jar:5.2.0.M1]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1841) ~[spring-beans-5.2.0.M1.jar:5.2.0.M1]
    at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1778) ~[spring-beans-5.2.0.M1.jar:5.2.0.M1]
    ... 21 common frames omitted
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:133) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    at org.hibernate.boot.registry.selector.internal.StrategySelectorImpl.resolveStrategy(StrategySelectorImpl.java:212) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    at org.hibernate.boot.registry.selector.internal.StrategySelectorImpl.resolveDefaultableStrategy(StrategySelectorImpl.java:160) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    at org.hibernate.boot.registry.selector.internal.StrategySelectorImpl.resolveDefaultableStrategy(StrategySelectorImpl.java:147) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    at org.hibernate.boot.registry.selector.internal.StrategySelectorImpl.resolveStrategy(StrategySelectorImpl.java:141) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.constructDialect(DialectFactoryImpl.java:74) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:51) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:137) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:101) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    ... 38 common frames omitted
Caused by: org.hibernate.boot.registry.classloading.spi.ClassLoadingException: Unable to load class [org.hibernate.dialect.MySQL5Dialect  ]
    at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:136) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    at org.hibernate.boot.registry.selector.internal.StrategySelectorImpl.selectStrategyImplementor(StrategySelectorImpl.java:129) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    ... 48 common frames omitted
Caused by: java.lang.ClassNotFoundException: Could not load requested class : org.hibernate.dialect.MySQL5Dialect  
    at org.hibernate.boot.registry.classloading.internal.AggregatedClassLoader.findClass(AggregatedClassLoader.java:210) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    at java.lang.ClassLoader.loadClass(Unknown Source) ~[na:1.8.0_201]
    at java.lang.ClassLoader.loadClass(Unknown Source) ~[na:1.8.0_201]
    at java.lang.Class.forName0(Native Method) ~[na:1.8.0_201]
    at java.lang.Class.forName(Unknown Source) ~[na:1.8.0_201]
    at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:133) ~[hibernate-core-5.4.2.Final.jar:5.4.2.Final]
    ... 49 common frames omitted

pom.xml

请仔细阅读错误日志：

Caused by: org.hibernate.boot.registry.selector.spi.StrategySelectionException: Unable to resolve name [org.hibernate.dialect.MySQL5Dialect  ] as strategy [org.hibernate.dialect.Dialect]

及

它无法加载类org.hibernate.dialogue.mysql5dialogue
。在application.properties文件中，您提到了这个类。它将允许Hibernate生成针对MySQL优化的SQL。此类位于

hibernate核心jar中。因为您在pom.xm中没有提到hibernate核心依赖项，所以hibernate核心jar在您的项目中不存在。将以下依赖项添加到pom.xml文件中
<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-core -->
<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-core</artifactId>
    <version>4.3.11.Final</version>
</dependency>


org.hibernate
冬眠核心
4.3.11.4最终版本
仔细阅读错误日志：
Caused by: org.hibernate.boot.registry.selector.spi.StrategySelectionException: Unable to resolve name [org.hibernate.dialect.MySQL5Dialect  ] as strategy [org.hibernate.dialect.Dialect]

及
它无法加载类org.hibernate.dialogue.mysql5dialogue。在application.properties文件中，您提到了这个类。它将允许Hibernate生成针对MySQL优化的SQL。此类位于hibernate核心jar中。因为您在pom.xm中没有提到hibernate核心依赖项，所以hibernate核心jar在您的项目中不存在。将以下依赖项添加到pom.xml文件中
<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-core -->
<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-core</artifactId>
    <version>4.3.11.Final</version>
</dependency>


org.hibernate
冬眠核心
4.3.11.4最终版本
您的mysql版本是什么？my sql version5.7.21错误是找不到类org.hibernate.dialogue.mysql5dialogue。在pom中添加所需的hibernate依赖项。您的mysql版本是什么？my sql version5.7.21错误是找不到类org.hibernate.dialogue.mysql5dialogue。在pom中添加所需的hibernate依赖项。添加或删除此依赖项无效。Spring启动应用程序启动，但不会在数据库bookstoredatabase中自动创建表用户（以及列）。我也不认为没有必要使用hibernate内核，因为我已经使用了spring数据JPA添加或删除它没有任何效果。Spring启动应用程序启动，但不会在数据库bookstoredatabase中自动创建表用户（以及列）。我也不认为需要hibernate内核，因为我已经使用了spring数据jpa
Caused by: java.lang.ClassNotFoundException: Could not load requested class : org.hibernate.dialect.MySQL5Dialect

<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-core -->
<dependency>
    <groupId>org.hibernate</groupId>
    <artifactId>hibernate-core</artifactId>
    <version>4.3.11.Final</version>
</dependency>