我正在使用SQLite和Hibernate ORM核心版本5.4.20.Final，但出现以下错误。
ago 21, 2020 10:47:09 PM org.hibernate.Version logVersion
INFO: HHH000412: Hibernate ORM core version 5.4.20.Final
ago 21, 2020 10:47:09 PM org.hibernate.annotations.common.reflection.java.JavaReflectionManager <clinit>
INFO: HCANN000001: Hibernate Commons Annotations {5.1.0.Final}
ago 21, 2020 10:47:10 PM org.hibernate.dialect.Dialect <init>
INFO: HHH000400: Using dialect: org.hibernate.dialect.SQLiteDialect
Exception in thread "main" 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)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:237)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214)
at org.hibernate.id.factory.internal.DefaultIdentifierGeneratorFactory.injectServices(DefaultIdentifierGeneratorFactory.java:152)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.injectDependencies(AbstractServiceRegistryImpl.java:286)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:243)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214)
at org.hibernate.boot.internal.InFlightMetadataCollectorImpl.<init>(InFlightMetadataCollectorImpl.java:176)
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.complete(MetadataBuildingProcess.java:118)
at org.hibernate.boot.model.process.spi.MetadataBuildingProcess.build(MetadataBuildingProcess.java:83)
at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:473)
at org.hibernate.boot.internal.MetadataBuilderImpl.build(MetadataBuilderImpl.java:84)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:689)
at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:724)
at com.abigsite.facturationsystem.config.GenerateTables.main(GenerateTables.java:12)
Caused by: org.hibernate.HibernateException: java.lang.IllegalArgumentException: max size attribute is mandatory
at org.hibernate.agroal.internal.AgroalConnectionProvider.configure(AgroalConnectionProvider.java:95)
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.configureService(StandardServiceRegistryImpl.java:107)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.initializeService(AbstractServiceRegistryImpl.java:246)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.getService(AbstractServiceRegistryImpl.java:214)
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.buildJdbcConnectionAccess(JdbcEnvironmentInitiator.java:145)
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:66)
at org.hibernate.engine.jdbc.env.internal.JdbcEnvironmentInitiator.initiateService(JdbcEnvironmentInitiator.java:35)
at org.hibernate.boot.registry.internal.StandardServiceRegistryImpl.initiateService(StandardServiceRegistryImpl.java:101)
at org.hibernate.service.internal.AbstractServiceRegistryImpl.createService(AbstractServiceRegistryImpl.java:263)
... 14 more
Caused by: java.lang.IllegalArgumentException: max size attribute is mandatory
at io.agroal.api.configuration.supplier.AgroalConnectionPoolConfigurationSupplier.validate(AgroalConnectionPoolConfigurationSupplier.java:237)
at io.agroal.api.configuration.supplier.AgroalConnectionPoolConfigurationSupplier.get(AgroalConnectionPoolConfigurationSupplier.java:278)
at io.agroal.api.configuration.supplier.AgroalConnectionPoolConfigurationSupplier.get(AgroalConnectionPoolConfigurationSupplier.java:25)
at io.agroal.api.configuration.supplier.AgroalDataSourceConfigurationSupplier.connectionPoolConfiguration(AgroalDataSourceConfigurationSupplier.java:53)
at io.agroal.api.configuration.supplier.AgroalPropertiesReader.readProperties(AgroalPropertiesReader.java:176)
at org.hibernate.agroal.internal.AgroalConnectionProvider.configure(AgroalConnectionProvider.java:81)
... 22 more
我的休眠xml文件中具有以下配置。
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="show_sql">true</property>
<property name="format_sql">true</property>
<property name="dialect">org.hibernate.SQLiteDialect</property>
<property name="connection.driver_class">org.sqlite.JDBC</property>
<property name="connection.url">jdbc:sqlite:mydb</property>
<property name="hibernate.hbm2ddl.auto">update</property>
<property name="hibernate.current_session_context_class">org.hibernate.context.internal.ThreadLocalSessionContext</property>
<mapping class="model.Role" />
</session-factory>
</hibernate-configuration>
我正在做一个简单的示例，下面的类是我正在使用的实体：
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table(name = "role")
public class Role {
@Id
@Column(name = "role_id")
@GeneratedValue(strategy = GenerationType.IDENTITY)
private byte roleId;
public Role() {
// TODO Auto-generated constructor stub
}
public byte getRoleId() {
return roleId;
}
public void setRoleId(byte roleId) {
this.roleId = roleId;
}
}
最后，我有一个负责持久化的课程
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.cfg.Configuration;
import com.abigsite.facturationsystem.model.Role;
public class Example {
public static void main(String[] args) {
SessionFactory session = new Configuration().configure("hibernate.cfg.xml").buildSessionFactory();
Session s = session.openSession();
Transaction t = s.beginTransaction();
Role role = new Role();
s.save(role);
t.commit();
}
}
该错误发生在行上：
SessionFactory session = new Configuration().configure("hibernate.cfg.xml").buildSessionFactory();
已验证数据库的位置，此外，在依赖项中使用了SQLite JDBC .jar，另一方面，正在使用正确的方言，与库相同