hibernate连接Oracle自动建表

Question

[报错空指针异常，本人菜鸟，网上搜了很多资料，但是没有能解决，希望哪位大侠能帮帮忙测试一下，小弟在此谢谢了。
4:39:05,593 ERROR org.hibernate.tool.hbm2ddl.SchemaExport:372 - HHH000231: Schema export unsuccessful
java.lang.NullPointerException
at org.hibernate.tool.hbm2ddl.DatabaseExporter.<init>(DatabaseExporter.java:54)
at org.hibernate.tool.hbm2ddl.SchemaExport.execute(SchemaExport.java:354)
at org.hibernate.tool.hbm2ddl.SchemaExport.create(SchemaExport.java:291)
at org.hibernate.tool.hbm2ddl.SchemaExport.create(SchemaExport.java:280)
at com.bjsxt.hibernate.HibernateORMappingTest.testSchemaExport(HibernateORMappingTest.java:30)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:44)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:41)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:263)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:69)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:48)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222)
at org.junit.runners.ParentRunner.run(ParentRunner.java:292)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:49)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)
14:39:05,593  INFO org.hibernate.tool.hbm2ddl.SchemaExport:392 - HHH000230: Schema export complete

Answer 1

package com.bjsxt.hibernate;import java.util.Date;import org.hibernate.Query;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.AnnotationConfiguration;
import org.hibernate.tool.hbm2ddl.SchemaExport;
import org.junit.AfterClass;
import org.junit.BeforeClass;
import org.junit.Test;public class HibernateORMappingTest {
private static SessionFactory sessionFactory;

//@BeforeClass
public static void beforeClass() {
sessionFactory = new AnnotationConfiguration().configure().buildSessionFactory();
}
//@AfterClass
public static void afterClass() {
sessionFactory.close();
}



@Test
public void testSchemaExport() {
new SchemaExport(new AnnotationConfiguration().configure()).create(false, true);
}

public static void main(String[] args) {
beforeClass();
}
}

Answer 2

package com.bjsxt.hibernate;import javax.persistence.Embedded;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.JoinColumn;
import javax.persistence.JoinColumns;
import javax.persistence.OneToOne;@Entity
public class Husband {
private int id;
private String name;
private Wife wife;
@Id
@GeneratedValue(strategy=GenerationType.SEQUENCE)
public int getId() {
return id;
}

public String getName() {
return name;
}
@Embedded
public Wife getWife() {
return wife;
}
public void setId(int id) {
this.id = id;
}
public void setName(String name) {
this.name = name;
}
public void setWife(Wife wife) {
this.wife = wife;
}

}

Answer 3

package com.bjsxt.hibernate;public class Wife {

private String wifeName;
private int age;

public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}

public String getWifeName() {
return wifeName;
}
public void setWifeName(String name) {
this.wifeName = name;
}

}

Answer 4

我也遇到同样的问题了，应该是Hibernate4的一个bug
下面的链接是Hibernate官网的Bug描述
https://hibernate.onjira.com/browse/HHH-6487?page=com.atlassian.jirafisheyeplugin%3Afisheye-issuepanel#issue-tabs