java Hibernate 发生断言失败（这可能表明 Hibernate 中存在错误，但更有可能是由于会话的不安全使用）
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时间：2020-11-03 02:02:06 来源:igfitidea点击:
Hibernate An assertion failure occured (this may indicate a bug in Hibernate, but is more likely due to unsafe use of the session)
提问by TVH7
I just changed from hibernate 4.X) to hibernate 5.0, I changed my configuration file accordingly but I'm getting an weird error.
我刚刚从 hibernate 4.X) 更改为 hibernate 5.0，我相应地更改了我的配置文件，但出现了一个奇怪的错误。
An assertion failure occured (this may indicate a bug in Hibernate, but is more likely due to unsafe use of the session): org.hibernate.AssertionFailure: Table x_database.User not found
发生断言失败（这可能表明 Hibernate 中存在错误，但更有可能是由于会话的不安全使用）：org.hibernate.AssertionFailure: Table x_database.User not found
I hope that you can help.
我希望你能帮忙。
Below you can see my session file and my XML config file.
您可以在下面看到我的会话文件和我的 XML 配置文件。
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-configuration SYSTEM
"http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<!-- Connects to the localhost database. This is for development purposes only. !-->
<property name="hibernate.connection.url">jdbc:mysql://localhost:3306/x_database</property>
<!-- Should the system flush the database before running or only update the database? !-->
<property name="hbm2ddl.auto">
create
</property>
<property name="hibernate.connection.username">
root
</property>
<property name="hibernate.connection.password">
root
</property>
<mapping class="org.hva.folivora.model.user.UserEntity"></mapping>
<mapping class="org.hva.folivora.model.user.ParentEntity"></mapping>
<mapping class="org.hva.folivora.model.user.StudentEntity"></mapping>
<mapping class="org.hva.folivora.model.questionanswer.QuestionEntity"></mapping>
<mapping class="org.hva.folivora.model.global.GroupEntity"></mapping>
<mapping class="org.hva.folivora.model.global.ThemeEntity"></mapping>
</session-factory>
</hibernate-configuration>
Below my session factory.
在我的会话工厂下面。
public class Database {
private static final SessionFactory sessionFactory = buildSessionFactory();
private static SessionFactory buildSessionFactory() {
try {
// Create the SessionFactory from hibernate.cfg.xml
StandardServiceRegistry standardRegistry = new StandardServiceRegistryBuilder().configure("hibernate.cfg.xml").build();
Metadata metadata = new MetadataSources(standardRegistry).getMetadataBuilder().build();
return metadata.getSessionFactoryBuilder().build();
} catch (Throwable ex) {
// Make sure you log the exception, as it might be swallowed
System.err.println("Initial SessionFactory creation failed." + ex);
throw new ExceptionInInitializerError(ex);
}
}
public static SessionFactory getSessionFactory() {
return sessionFactory;
}
public static Session getSession() {
return getSessionFactory().openSession();
}
public static void main(final String[] args) throws Exception {
final org.hibernate.Session session = getSession();
try {
System.out.println("querying all the managed entities...");
final Map metadataMap = session.getSessionFactory().getAllClassMetadata();
for (Object key : metadataMap.keySet()) {
final ClassMetadata classMetadata = (ClassMetadata) metadataMap.get(key);
final String entityName = classMetadata.getEntityName();
final Query query = session.createQuery("from " + entityName);
System.out.println("executing: " + query.getQueryString());
for (Object o : query.list()) {
System.out.println(" " + o);
}
}
} finally {
session.close();
}
}
}
Full stacktrace below.
下面的完整堆栈跟踪。
01-May-2016 18:18:08.136 SEVERE [http-nio-8079-exec-4] org.apache.catalina.core.StandardWrapperValve.invoke Servlet.service() for servlet [IJBurg API/BACKEND] in context with path [] threw exception [org.glassfish.jersey.server.ContainerException: java.lang.ExceptionInInitializerError] with root cause
org.hibernate.AssertionFailure: Table pad_ijburg.User not found
at org.hibernate.persister.entity.AbstractEntityPersister.getTableId(AbstractEntityPersister.java:5139)
at org.hibernate.persister.entity.JoinedSubclassEntityPersister.<init>(JoinedSubclassEntityPersister.java:433)
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:422)
at org.hibernate.persister.internal.PersisterFactoryImpl.createEntityPersister(PersisterFactoryImpl.java:96)
at org.hibernate.persister.internal.PersisterFactoryImpl.createEntityPersister(PersisterFactoryImpl.java:77)
at org.hibernate.internal.SessionFactoryImpl.<init>(SessionFactoryImpl.java:344)
at org.hibernate.boot.internal.SessionFactoryBuilderImpl.build(SessionFactoryBuilderImpl.java:465)
at org.hva.folivora.Database.buildSessionFactory(Database.java:26)
at org.hva.folivora.Database.<clinit>(Database.java:19)
at org.hva.folivora.MyResource.getIt(MyResource.java:39)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.invoke(ResourceMethodInvocationHandlerFactory.java:81)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.run(AbstractJavaResourceMethodDispatcher.java:144)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:161)
at org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$TypeOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:205)
at org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:99)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:389)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:347)
at org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:102)
at org.glassfish.jersey.server.ServerRuntime.run(ServerRuntime.java:317)
at org.glassfish.jersey.internal.Errors.call(Errors.java:271)
at org.glassfish.jersey.internal.Errors.call(Errors.java:267)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:317)
at org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:298)
at org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:1154)
at org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:471)
at org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:425)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:383)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:336)
at org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:223)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:108)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:522)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:620)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:1096)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:760)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1480)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:745)
My sessionfactory
我的会话工厂
package org.hva.folivora;
import org.hibernate.HibernateException;
import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.boot.Metadata;
import org.hibernate.boot.MetadataSources;
import org.hibernate.boot.registry.StandardServiceRegistry;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.metadata.ClassMetadata;
import java.util.Map;
public class Database {
private static final SessionFactory sessionFactory = buildSessionFactory();
private static SessionFactory buildSessionFactory() {
try {
// Create the SessionFactory from hibernate.cfg.xml
StandardServiceRegistry standardRegistry = new StandardServiceRegistryBuilder().configure("hibernate.cfg.xml").build();
Metadata metadata = new MetadataSources(standardRegistry).getMetadataBuilder().build();
return metadata.getSessionFactoryBuilder().build();
} catch (Throwable ex) {
// Make sure you log the exception, as it might be swallowed
System.err.println("Initial SessionFactory creation failed." + ex);
throw new ExceptionInInitializerError(ex);
}
}
public static SessionFactory getSessionFactory() {
return sessionFactory;
}
public static Session getSession() {
return getSessionFactory().openSession();
}
public static void main(final String[] args) throws Exception {
final org.hibernate.Session session = getSession();
try {
System.out.println("querying all the managed entities...");
final Map metadataMap = session.getSessionFactory().getAllClassMetadata();
for (Object key : metadataMap.keySet()) {
final ClassMetadata classMetadata = (ClassMetadata) metadataMap.get(key);
final String entityName = classMetadata.getEntityName();
final Query query = session.createQuery("from " + entityName);
System.out.println("executing: " + query.getQueryString());
for (Object o : query.list()) {
System.out.println(" " + o);
}
}
} finally {
session.close();
}
}
}
package org.hva.folivora.model.user;
import javax.jws.soap.SOAPBinding;
import javax.persistence.*;
@Entity
@Table(name = "User", schema = "pad_ijburg")
@Inheritance(strategy = InheritanceType.JOINED)
public class UserEntity {
private int idUser;
private String email;
private String firstName;
private String lastName;
private String password;
private Boolean admin = false;
private Boolean teacher = false;
public UserEntity(){
}
public UserEntity(String email, String firstName, String lastName, String password, Boolean admin, Boolean teacher){
this.email = email;
this.firstName = firstName;
this.lastName = lastName;
this.password = password;
this.admin = admin;
this.teacher = teacher;
}
@Basic
@Column(name = "teacher")
public Boolean getTeacher() {
return teacher;
}
public void setTeacher(Boolean teacher) {
this.teacher = teacher;
}
@Id @GeneratedValue(strategy = GenerationType.IDENTITY)
@Column(name = "idUser", nullable = false, updatable = false, unique = true)
public int getIdUser() {
return idUser;
}
public void setIdUser(int idUser) {
this.idUser = idUser;
}
@Basic
@Column(name = "email", unique = true, nullable = false)
public String getEmail() {
return email;
}
public void setEmail(String email) {
this.email = email;
}
@Basic
@Column(name = "firstName")
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
@Basic
@Column(name = "lastName")
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
@Basic
@Column(name = "password")
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
@Basic
@Column(name = "admin")
public Boolean getAdmin() {
return admin;
}
public void setAdmin(Boolean admin) {
this.admin = admin;
}
@Override
public boolean equals(Object o) {
if (this == o) return true;
if (o == null || getClass() != o.getClass()) return false;
UserEntity that = (UserEntity) o;
if (idUser != that.idUser) return false;
if (email != null ? !email.equals(that.email) : that.email != null) return false;
if (firstName != null ? !firstName.equals(that.firstName) : that.firstName != null) return false;
if (lastName != null ? !lastName.equals(that.lastName) : that.lastName != null) return false;
if (password != null ? !password.equals(that.password) : that.password != null) return false;
if (admin != null ? !admin.equals(that.admin) : that.admin != null) return false;
return true;
}
@Override
public int hashCode() {
int result = idUser;
result = 31 * result + (email != null ? email.hashCode() : 0);
result = 31 * result + (firstName != null ? firstName.hashCode() : 0);
result = 31 * result + (lastName != null ? lastName.hashCode() : 0);
result = 31 * result + (password != null ? password.hashCode() : 0);
result = 31 * result + (admin != null ? admin.hashCode() : 0);
return result;
}
}
采纳答案by TVH7
Downgrade to Hibernate 4.1-FINAL and it should work again. Apparently Hibernate 5 has a lot of trouble still.. (Or they totally removed the joined strategy) Quite sad..
降级到 Hibernate 4.1-FINAL，它应该可以再次运行。显然 Hibernate 5 仍然有很多麻烦..（或者他们完全删除了加入的策略）很伤心..
回答by TVH7
It seems that it has something to do with the @inheritance. When I remove the inheritance joined type it will work. I still cannot get further since joined inheritance is something I still need.
似乎与@inheritance有关。当我删除继承连接类型时，它将起作用。我仍然无法进一步，因为我仍然需要加入继承。
回答by v.ladynev
Firstly, USERis a reserved keyword in MySQL. It can be a reason of the problem. Please, use plural names
首先，USER是 MySQL 中的保留关键字。这可能是问题的原因。请使用复数名称
@Table(name = "users", schema = "pad_ijburg")
public class User {
}
You need to have pad_ijburgschema in the database. And you need to update or create the schema with hibernate.hbm2ddl.auto=update, if you don't do so.
您需要pad_ijburg在数据库中有架构。hibernate.hbm2ddl.auto=update如果您不这样做，则需要使用 更新或创建架构。
Next time, enable SQL log and provide log with Hibernate bootstrap. Hibernate provides information about SQL for tables creation.
下一次，启用 SQL 日志并通过 Hibernate 引导程序提供日志。Hibernate 提供有关用于表创建的 SQL 的信息。
