我是Spring＆Hibernate的新手， 尝试运行将它们一起运行的项目。 修复许多错误后，一切正常， 但是当我运行主类时，我仍然会收到该异常：
org.hibernate.HibernateException: Use of DefaultSchemaNameResolver requires Dialect to provide the proper SQL statement/command but provided Dialect [org.hibernate.dialect.MySQL57Dialect] did not return anything from Dialect#getCurrentSchemaCommand
at org.hibernate.engine.jdbc.env.internal.DefaultSchemaNameResolver$SchemaNameResolverFallbackDelegate.resolveSchemaName(DefaultSchemaNameResolver.java:100) ~[hibernate-core-5.3.1.Final.jar:5.3.1.Final]
at org.hibernate.engine.jdbc.env.internal.DefaultSchemaNameResolver.resolveSchemaName(DefaultSchemaNameResolver.java:76) ~[hibernate-core-5.3.1.Final.jar:5.3.1.Final]
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentImpl.determineCurrentSchemaName(JdbcEnvironmentImpl.java:298) [hibernate-core-5.3.1.Final.jar:5.3.1.Final]
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentImpl.<init>(JdbcEnvironmentImpl.java:232) [hibernate-core-5.3.1.Final.jar:5.3.1.Final]
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:114) [hibernate-core-5.3.1.Final.jar:5.3.1.Final]
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35) [hibernate-core-5.3.1.Final.jar:5.3.1.Final]
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:94) [hibernate-core-5.3.1.Final.jar:5.3.1.Final]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263) [hibernate-core-5.3.1.Final.jar:5.3.1.Final]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237) [hibernate-core-5.3.1.Final.jar:5.3.1.Final]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) [hibernate-core-5.3.1.Final.jar:5.3.1.Final]
at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:152) [hibernate-core-5.3.1.Final.jar:5.3.1.Final]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:286) [hibernate-core-5.3.1.Final.jar:5.3.1.Final]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:243) [hibernate-core-5.3.1.Final.jar:5.3.1.Final]
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214) [hibernate-core-5.3.1.Final.jar:5.3.1.Final]
at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:179) [hibernate-core-5.3.1.Final.jar:5.3.1.Final]
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:119) [hibernate-core-5.3.1.Final.jar:5.3.1.Final]
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.build(MetadataBuildingProcess.java:84) [hibernate-core-5.3.1.Final.jar:5.3.1.Final]
at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:474) [hibernate-core-5.3.1.Final.jar:5.3.1.Final]
at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:85) [hibernate-core-5.3.1.Final.jar:5.3.1.Final]
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:689) [hibernate-core-5.3.1.Final.jar:5.3.1.Final]
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:724) [hibernate-core-5.3.1.Final.jar:5.3.1.Final]
at org.springframework.orm.hibernate4.LocalSessionFactoryBuilder.buildSessionFactory(LocalSessionFactoryBuilder.java:343) [spring-orm-4.0.3.RELEASE.jar:4.0.3.RELEASE]
at org.springframework.orm.hibernate4.LocalSessionFactoryBean.buildSessionFactory(LocalSessionFactoryBean.java:431) [spring-orm-4.0.3.RELEASE.jar:4.0.3.RELEASE]
at org.springframework.orm.hibernate4.LocalSessionFactoryBean.afterPropertiesSet(LocalSessionFactoryBean.java:416) [spring-orm-4.0.3.RELEASE.jar:4.0.3.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1637) [spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574) [spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:545) [spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:482) [spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:306) [spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) [spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:302) [spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:197) [spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:753) [spring-beans-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:839) [spring-context-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:538) [spring-context-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139) [spring-context-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83) [spring-context-4.2.7.RELEASE.jar:4.2.7.RELEASE]
at springboot.beans.app.SpringHibernateMain.main(SpringHibernateMain.java:24) [classes/:na]
尝试使用google来删除方言属性或对其进行更改，但这是行不通的。
它的原因是什么，以及如何解决（有关版本覆盖的pom.xml也收到了很多警告）。
这是相关文件，我希望：
正在运行的课程：
package springboot.beans.app;
import java.util.List;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.boot.Metadata;
import org.hibernate.boot.MetadataSources;
import org.hibernate.boot.registry.StandardServiceRegistry;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import database.ManageEmployee;
import withAnnotation.InsertRecords;
import withAnnotation.InsertRecords2;
import withAnnotation.Product;
public class SpringHibernateMain {
public static void main(String[] args) {
ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("SpringHibernateConfiguration.xml");
ManageEmployee manager = context.getBean(ManageEmployee.class);
/* Add few employee records in database */
Integer empID1 = manager.addEmployee("Spring222", "TODAY222", 30000);
Integer empID2 = manager.addEmployee("Avraham-spring", "Das", 5000);
Integer empID3 = manager.addEmployee("Sarah wigh spring", "Paul", 10000);
/* List down all the employees */
manager.listEmployees();
/* Update employee's records */
manager.updateEmployee(empID1, 5000);
System.out.println(empID2 + " = empID2");
/* Delete an employee from the database */
manager.deleteEmployee(empID2);
/* List down new list of the employees */
manager.listEmployees();
InsertRecords2 producer = context.getBean(InsertRecords2.class);
producer.updateProducts();//it's running insertion from inside
System.out.println("check if done");
//close resources
context.close();
}
}
SpringHibernateConfiguration.xml：
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-4.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<!-- <property name = "hibernate.connection.driver_class">
com.mysql.jdbc.Driver
</property>
-->
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/hibernate_mysql7?useSSL=false" />
<property name="username" value="XXXX" />
<property name="password" value="XXXX" />
</bean>
<!-- Hibernate 3 XML SessionFactory Bean definition-->
<!-- <bean id="hibernate3SessionFactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="mappingResources">
<list>
<value>person.hbm.xml</value>
</list>
</property>
<property name="hibernateProperties">
<value>
hibernate.dialect=org.hibernate.dialect.MySQLDialect
</value>
</property>
</bean> -->
<!-- Hibernate 4 Annotation SessionFactory Bean definition-->
<bean id="hibernate4AnnotatedSessionFactory"
class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="annotatedClasses"><!-- sessionFactory -->
<list>
<!-- <value>Employee.hbm.xml</value> ? <value>database.Employee</value> -->
<value>withAnnotation.Product</value>
</list>
</property>
<!-- add this -->
<property name="mappingResources">
<list>
<value>Employee.hbm.xml</value>
</list>
</property>
<!-- end -->
<property name="hibernateProperties">
<props>
<!-- this cause new creating and clean all from the past
<prop key="hibernate.hbm2ddl.auto">create</prop>
if u want to create once and keep use that instead :-->
<prop key="hibernate.hbm2ddl.auto">update</prop>
<!-- hibernate found it by itself <prop key="hibernate.dialect">org.hibernate.dialect.MySQL5Dialect</prop> -->
<prop key="hibernate.current_session_context_class">thread</prop>
<prop key="hibernate.show_sql">true</prop><!-- <property name="hibernate.hbm2ddl.auto">create</property> -->
</props>
</property>
</bean>
<bean id="managerEmployee" class="database.ManageEmployee">
<property name="sessionFactory" ref="hibernate4AnnotatedSessionFactory" />
</bean>
<bean id="producer" class="withAnnotation.InsertRecords2">
<property name="sessionFactory" ref="hibernate4AnnotatedSessionFactory" />
</bean>
</beans>
pom.xml：
<
project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>springboot.beans.app</groupId>
<artifactId>SpringHibernateBasic5-OtherConfiguration</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>SpringHibernateBasic5-OtherConfiguration</name>
<url>http://maven.apache.org</url>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<spring.version>4.2.7.RELEASE</spring.version>
<java.version>1.8</java.version>
<spring-framework.version>4.0.3.RELEASE</spring-framework.version>
<!-- *** added -->
<!-- Hibernate / JPA -->
<!-- <hibernate.version>4.3.5.Final</hibernate.version> -->
<hibernate.version>5.3.1.Final</hibernate.version> <!-- 3.6.9.Final-->
<!-- Logging -->
<logback.version>1.0.13</logback.version>
<slf4j.version>1.7.5</slf4j.version>
</properties>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.5.RELEASE</version>
</parent>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version><!--$NO-MVN-MAN-VER$-->
</dependency>
<!-- Spring boot dependencies -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>${spring-framework.version}</version>
</dependency>
<!-- Spring ORM support -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring-framework.version}</version>
</dependency>
<!-- Logging with SLF4J & LogBack -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${slf4j.version}</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>${logback.version}</version>
<scope>runtime</scope>
</dependency>
<!-- Hibernate -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>${hibernate.version}</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>${hibernate.version}</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.47</version>
</dependency>
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<!-- Spring dependency -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.2</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
运行的完整日志很长，所以我需要在此处复制什么？
答案 0 :(得分：2)
您的方法存在一些缺陷
首先清理您的pom.xml并使用Spring Boots依赖项管理来发挥您的优势。
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>springboot.beans.app</groupId>
<artifactId>SpringHibernateBasic5-OtherConfiguration</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>SpringHibernateBasic5-OtherConfiguration</name>
<url>http://maven.apache.org</url>
<properties>
<java.version>1.8</java.version>
</properties>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.5.RELEASE</version>
</parent>
<dependencies>
<!-- Spring boot dependencies -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
</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>
</project>
请注意，您的大多数依赖项已消失，因为大多数依赖项已经由您拥有的一个入门者（slf4j，logback，Spring依赖项）进行了管理。您想使用Hibernate（我建议使用JPA而不是普通的Hibernate），只需添加spring-boot-starter-data-jpa即可获得所有所需的依赖关系。
接下来，在application.properties中创建一个src/main/resources，并将以下内容放入其中（从您的问题中扣除）。
spring.datasource.url=jdbc:mysql://localhost:3306/hibernate_mysql7?useSSL=false
spring.datasource.username=XXXX
spring.datasource.password=XXXX
spring.jpa.hibernate.ddl-auto=update
这将配置数据源并创建模式（尽管最好不要在生产环境中使用它！）。
现在修改您的SpringHibernateMain并在其上放置一个@SpringBootApplication注释并更改您的main方法。还要将您的实体放在适当的子包中。
@SpringBootApplication
public class SpringHibernateMain {
public static void main(String[] args) {
ApplicationContext context = SpringApplication.run(SpringHibernateMain.class ,args);
ManageEmployee manager = context.getBean(ManageEmployee.class);
/* Add few employee records in database */
Integer empID1 = manager.addEmployee("Spring222", "TODAY222", 30000);
Integer empID2 = manager.addEmployee("Avraham-spring", "Das", 5000);
Integer empID3 = manager.addEmployee("Sarah wigh spring", "Paul", 10000);
/* List down all the employees */
manager.listEmployees();
/* Update employee's records */
manager.updateEmployee(empID1, 5000);
System.out.println(empID2 + " = empID2");
/* Delete an employee from the database */
manager.deleteEmployee(empID2);
/* List down new list of the employees */
manager.listEmployees();
InsertRecords2 producer = context.getBean(InsertRecords2.class);
producer.updateProducts();//it's running insertion from inside
System.out.println("check if done");
}
}
现在将SpringHibernateMain放置在像springboot.beans.app这样的体面包装中（如以前一样），然后将实体放置在springboot.beans.app.entities中，并将其他所有内容放置在springboot.beans.app.services中（而不是现在）。
剩下的事情是“重写”您的类InsertRecords2和ManageEmployee以使用EntityManager而不是普通的SessionFactory。它仍然会在下面使用Hibernate，但是通常最好使用JPA，并且在您真正需要的情况下仅使用普通Hibernate。