mysql - MySQL 与 Springboot 的连接
问题描述
我研究了类似的问题，并尝试执行前面线程中提到的不同选项，但无法修复它。我有以下错误，有人可以帮我解决这个问题。
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.2.11.RELEASE)
2020-12-08 15:05:30.602 INFO 11076 --- [ main] c.p.c.ConferenceDemoApplication : Starting ConferenceDemoApplication on DESKTOP-3RN8P39 with PID 11076 (C:\Users\tania\Downloads\conference-demo\conference-demo\target\classes started by tania in C:\Users\tania\Downloads\conference-demo)
2020-12-08 15:05:30.607 INFO 11076 --- [ main] c.p.c.ConferenceDemoApplication : No active profile set, falling back to default profiles: default
2020-12-08 15:05:32.039 INFO 11076 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
2020-12-08 15:05:32.162 INFO 11076 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 109ms. Found 2 JPA repository interfaces.
2020-12-08 15:05:33.208 INFO 11076 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2020-12-08 15:05:33.220 INFO 11076 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2020-12-08 15:05:33.221 INFO 11076 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.39]
2020-12-08 15:05:33.339 INFO 11076 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2020-12-08 15:05:33.339 INFO 11076 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 2655 ms
2020-12-08 15:05:33.595 INFO 11076 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [name: default]
2020-12-08 15:05:33.655 INFO 11076 --- [ main] org.hibernate.Version : HHH000412: Hibernate ORM core version 5.4.22.Final
2020-12-08 15:05:33.775 INFO 11076 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.0.1.Final}
2020-12-08 15:05:33.866 INFO 11076 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...
2020-12-08 15:05:34.392 INFO 11076 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed.
2020-12-08 15:05:34.406 WARN 11076 --- [ main] o.h.e.j.e.i.JdbcEnvironmentInitiator : HHH000342: Could not obtain connection to query metadata : Unable to resolve name [org.hibernate.dialect.mysqlDialect] as strategy [org.hibernate.dialect.Dialect]
2020-12-08 15:05:34.409 WARN 11076 --- [ main] ConfigServletWebServerApplicationContext : 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/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]
2020-12-08 15:05:34.410 INFO 11076 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown initiated...
2020-12-08 15:05:34.413 INFO 11076 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed.
2020-12-08 15:05:34.416 INFO 11076 --- [ main] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2020-12-08 15:05:34.426 INFO 11076 --- [ main] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2020-12-08 15:05:34.432 ERROR 11076 --- [ main] o.s.boot.SpringApplication : Application run failed
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:1794) ~[spring-beans-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) ~[spring-beans-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) ~[spring-beans-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) ~[spring-beans-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1109) ~[spring-context-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:869) ~[spring-context-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551) ~[spring-context-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) ~[spring-boot-2.2.11.RELEASE.jar:2.2.11.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) ~[spring-boot-2.2.11.RELEASE.jar:2.2.11.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:405) ~[spring-boot-2.2.11.RELEASE.jar:2.2.11.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) ~[spring-boot-2.2.11.RELEASE.jar:2.2.11.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) ~[spring-boot-2.2.11.RELEASE.jar:2.2.11.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) ~[spring-boot-2.2.11.RELEASE.jar:2.2.11.RELEASE]
at com.pluralsight.conferencedemo.ConferenceDemoApplication.main(ConferenceDemoApplication.java:10) ~[classes/:na]
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-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:152) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:286) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:243) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:176) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:118) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1224) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1255) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) ~[spring-orm-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:391) ~[spring-orm-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:378) ~[spring-orm-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) ~[spring-orm-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1853) ~[spring-beans-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1790) ~[spring-beans-5.2.10.RELEASE.jar:5.2.10.RELEASE]
... 16 common frames omitted
Caused by: org.hibernate.boot.registry.selector.spi.StrategySelectionException: Unable to resolve name [org.hibernate.dialect.mysqlDialect] as strategy [org.hibernate.dialect.Dialect]
at org.hibernate.boot.registry.selector.internal.StrategySelectorImpl.selectStrategyImplementor(StrategySelectorImpl.java:156) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.boot.registry.selector.internal.StrategySelectorImpl.resolveStrategy(StrategySelectorImpl.java:239) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.boot.registry.selector.internal.StrategySelectorImpl.resolveDefaultableStrategy(StrategySelectorImpl.java:183) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.boot.registry.selector.internal.StrategySelectorImpl.resolveDefaultableStrategy(StrategySelectorImpl.java:170) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.boot.registry.selector.internal.StrategySelectorImpl.resolveStrategy(StrategySelectorImpl.java:164) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.constructDialect(DialectFactoryImpl.java:74) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.engine.jdbc.dialect.internal.DialectFactoryImpl.buildDialect(DialectFactoryImpl.java:51) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:137) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:101) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
... 33 common frames omitted
Caused by: org.hibernate.boot.registry.classloading.spi.ClassLoadingException: Unable to load class [org.hibernate.dialect.mysqlDialect]
at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:133) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.boot.registry.selector.internal.StrategySelectorImpl.selectStrategyImplementor(StrategySelectorImpl.java:152) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
... 43 common frames omitted
Caused by: java.lang.ClassNotFoundException: Could not load requested class : org.hibernate.dialect.mysqlDialect
at org.hibernate.boot.registry.classloading.internal.AggregatedClassLoader.findClass(AggregatedClassLoader.java:210) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:589) ~[na:na]
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:522) ~[na:na]
at java.base/java.lang.Class.forName0(Native Method) ~[na:na]
at java.base/java.lang.Class.forName(Class.java:468) ~[na:na]
at org.hibernate.boot.registry.classloading.internal.ClassLoaderServiceImpl.classForName(ClassLoaderServiceImpl.java:130) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
... 44 common frames omitted
进程以退出代码 1 结束
Pom.xml 应用程序属性
4.0.0 org.springframework.boot spring-boot-starter-parent 2.2.11.RELEASE com.example demo 0.0.1-SNAPSHOT demo 用于 Spring Boot 的演示项目
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<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.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.2.3.Final</version>
</dependency>
<dependency>
<groupId>org.javassist</groupId>
<artifactId>javassist</artifactId>
<version>3.27.0-GA</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
<exclusions>
<exclusion>
<groupId>org.junit.vintage</groupId>
<artifactId>junit-vintage-engine</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
解决方案
我一直在尝试不同的选项来消除此错误，但似乎问题出在映射上。以下是模型输出，需要您帮助解决此问题。
. ____ _ __ _ _
/\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \
( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \
\\/ ___)| |_)| | | | | || (_| | ) ) ) )
' |____| .__|_| |_|_| |_\__, | / / / /
=========|_|==============|___/=/_/_/_/
:: Spring Boot :: (v2.2.11.RELEASE)
2020-12-09 18:16:25.136 INFO 16144 --- [ main] c.p.c.ConferenceDemoApplication : Starting ConferenceDemoApplication on DESKTOP-3RN8P39 with PID 16144 (C:\Users\tania\Downloads\conference-demo\conference-demo\target\classes started by tania in C:\Users\tania\Downloads\conference-demo)
2020-12-09 18:16:25.140 INFO 16144 --- [ main] c.p.c.ConferenceDemoApplication : No active profile set, falling back to default profiles: default
2020-12-09 18:16:26.448 INFO 16144 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Bootstrapping Spring Data JPA repositories in DEFAULT mode.
2020-12-09 18:16:26.577 INFO 16144 --- [ main] .s.d.r.c.RepositoryConfigurationDelegate : Finished Spring Data repository scanning in 114ms. Found 2 JPA repository interfaces.
2020-12-09 18:16:27.536 INFO 16144 --- [ main] o.s.b.w.embedded.tomcat.TomcatWebServer : Tomcat initialized with port(s): 8080 (http)
2020-12-09 18:16:27.552 INFO 16144 --- [ main] o.apache.catalina.core.StandardService : Starting service [Tomcat]
2020-12-09 18:16:27.552 INFO 16144 --- [ main] org.apache.catalina.core.StandardEngine : Starting Servlet engine: [Apache Tomcat/9.0.39]
2020-12-09 18:16:27.676 INFO 16144 --- [ main] o.a.c.c.C.[Tomcat].[localhost].[/] : Initializing Spring embedded WebApplicationContext
2020-12-09 18:16:27.676 INFO 16144 --- [ main] w.s.c.ServletWebServerApplicationContext : Root WebApplicationContext: initialization completed in 2437 ms
2020-12-09 18:16:27.898 INFO 16144 --- [ main] o.hibernate.jpa.internal.util.LogHelper : HHH000204: Processing PersistenceUnitInfo [name: default]
2020-12-09 18:16:27.946 INFO 16144 --- [ main] org.hibernate.Version : HHH000412: Hibernate ORM core version 5.4.22.Final
2020-12-09 18:16:28.062 INFO 16144 --- [ main] o.hibernate.annotations.common.Version : HCANN000001: Hibernate Commons Annotations {5.1.0.Final}
2020-12-09 18:16:28.154 INFO 16144 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Starting...
2020-12-09 18:16:28.501 INFO 16144 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Start completed.
2020-12-09 18:16:28.517 INFO 16144 --- [ main] org.hibernate.dialect.Dialect : HHH000400: Using dialect: org.hibernate.dialect.MySQL8Dialect
2020-12-09 18:16:28.827 WARN 16144 --- [ main] ConfigServletWebServerApplicationContext : 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/HibernateJpaConfiguration.class]: Invocation of init method failed; nested exception is org.hibernate.AnnotationException: @OneToOne or @ManyToOne on com.pluralsight.conferencedemo.models.Session.speakers references an unknown entity: java.util.List
2020-12-09 18:16:28.827 INFO 16144 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown initiated...
2020-12-09 18:16:28.854 INFO 16144 --- [ main] com.zaxxer.hikari.HikariDataSource : HikariPool-1 - Shutdown completed.
2020-12-09 18:16:28.854 INFO 16144 --- [ main] o.apache.catalina.core.StandardService : Stopping service [Tomcat]
2020-12-09 18:16:28.863 INFO 16144 --- [ main] ConditionEvaluationReportLoggingListener :
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2020-12-09 18:16:28.872 ERROR 16144 --- [ main] o.s.boot.SpringApplication : Application run failed
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.AnnotationException: @OneToOne or @ManyToOne on com.pluralsight.conferencedemo.models.Session.speakers references an unknown entity: java.util.List
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1794) ~[spring-beans-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:594) ~[spring-beans-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:516) ~[spring-beans-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:324) ~[spring-beans-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234) ~[spring-beans-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:322) ~[spring-beans-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:202) ~[spring-beans-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1109) ~[spring-context-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:869) ~[spring-context-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:551) ~[spring-context-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:141) ~[spring-boot-2.2.11.RELEASE.jar:2.2.11.RELEASE]
at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:747) ~[spring-boot-2.2.11.RELEASE.jar:2.2.11.RELEASE]
at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:405) ~[spring-boot-2.2.11.RELEASE.jar:2.2.11.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:315) ~[spring-boot-2.2.11.RELEASE.jar:2.2.11.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1226) ~[spring-boot-2.2.11.RELEASE.jar:2.2.11.RELEASE]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1215) ~[spring-boot-2.2.11.RELEASE.jar:2.2.11.RELEASE]
at com.pluralsight.conferencedemo.ConferenceDemoApplication.main(ConferenceDemoApplication.java:10) ~[classes/:na]
Caused by: org.hibernate.AnnotationException: @OneToOne or @ManyToOne on com.pluralsight.conferencedemo.models.Session.speakers references an unknown entity: java.util.List
at org.hibernate.cfg.ToOneFkSecondPass.doSecondPass(ToOneFkSecondPass.java:97) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.processEndOfQueue(InFlightMetadataCollectorImpl.java:1823) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.processFkSecondPassesInOrder(InFlightMetadataCollectorImpl.java:1767) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.processSecondPasses(InFlightMetadataCollectorImpl.java:1655) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:286) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.metadata(EntityManagerFactoryBuilderImpl.java:1224) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.hibernate.jpa.boot.internal.EntityManagerFactoryBuilderImpl.build(EntityManagerFactoryBuilderImpl.java:1255) ~[hibernate-core-5.4.22.Final.jar:5.4.22.Final]
at org.springframework.orm.jpa.vendor.SpringHibernateJpaPersistenceProvider.createContainerEntityManagerFactory(SpringHibernateJpaPersistenceProvider.java:58) ~[spring-orm-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory(LocalContainerEntityManagerFactoryBean.java:365) ~[spring-orm-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.buildNativeEntityManagerFactory(AbstractEntityManagerFactoryBean.java:391) ~[spring-orm-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.orm.jpa.AbstractEntityManagerFactoryBean.afterPropertiesSet(AbstractEntityManagerFactoryBean.java:378) ~[spring-orm-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean.afterPropertiesSet(LocalContainerEntityManagerFactoryBean.java:341) ~[spring-orm-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1853) ~[spring-beans-5.2.10.RELEASE.jar:5.2.10.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1790) ~[spring-beans-5.2.10.RELEASE.jar:5.2.10.RELEASE]
... 16 common frames omitted
Process finished with exit code 1
型号1
package com.pluralsight.conferencedemo.models;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Primary;
import javax.persistence.*;
import java.util.List;
@Entity(name="sessions")
public class Session {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long session_id;
@Column(name="session_name", nullable = false)
private String session_name;
@Column(name="session_description", nullable = false)
private String session_description;
@Column(name="session_length", nullable = false)`enter code here`
private Integer session_length;
@ManyToMany
@JoinTable(
name="session_speakers",
joinColumns = @JoinColumn(name="session_id"),
inverseJoinColumns = @JoinColumn(name="speaker_id")
)
private List<Speakers> speakers;
public Session(){
}
public List<Speakers> getSpeakers() {
return speakers;
}
public void setSpeakers(List<Speakers> speakers) {
this.speakers = speakers;
}
public Long getSession_id() {
return session_id;
}
public void setSession_id(Long session_id) {
this.session_id = session_id;
}
public String getSession_name() {
return session_name;
}
public void setSession_name(String session_name) {
this.session_name = session_name;
}
public String getSession_description() {
return session_description;
}
public void setSession_description(String session_description) {
this.session_description = session_description;
}
public Integer getSession_length() {
return session_length;
}
public void setSession_length(Integer session_length) {
this.session_length = session_length;
}
}
模型2
package com.pluralsight.conferencedemo.models;
import javax.persistence.*;
import java.util.List;
@Entity(name="speakers")
public class Speakers {
@Id
@GeneratedValue(strategy = GenerationType.IDENTITY)
private Long speaker_id;
@Column(name="first_name", nullable = false)
private String first_name;
@Column(name="last_name", nullable = false)
private String last_name;
@Column(name="title", nullable = false)
private String title;
@Column(name="company", nullable = false)
private String company;
@Column(name="speaker_bio", nullable = false)
private String speaker_bio;
private byte[] speaker_photo;
@ManyToMany(mappedBy= "speakers")
private List<Session> session;
public Speakers(){
}
public byte[] getSpeaker_photo() {
return speaker_photo;
}
public void setSpeaker_photo(byte[] speaker_photo) {
this.speaker_photo = speaker_photo;
}
public List<Session> getSession() {
return session;
}
public void setSession(List<Session> session) {
this.session = session;
}
public Long getSpeaker_id() {
return speaker_id;
}
public void setSpeaker_id(Long speaker_id) {
this.speaker_id = speaker_id;
}
public String getFirst_name() {
return first_name;
}
public void setFirst_name(String first_name) {
this.first_name = first_name;
}
public String getLast_name() {
return last_name;
}
public void setLast_name(String last_name) {
this.last_name = last_name;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getCompany() {
return company;
}
public void setCompany(String company) {
this.company = company;
}
public String getSpeaker_bio() {
return speaker_bio;
}
public void setSpeaker_bio(String speaker_bio) {
this.speaker_bio = speaker_bio;
}
}
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