李淳罡
2016-04-20 19:58

做hibernate的代码测试,看不懂错误,请高手帮我看下!
旁边Failure Trace有什么错误
<?xml version="1.0" encoding="UTF-8"?> <!DOCTYPE hibernate-configuration PUBLIC "-//Hibernate/Hibernate Configuration DTD 3.0//EN" "http://http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd"> <hibernate-configuration> <session-factory> <property name="connection.username">root</property> <property name="connection.password">mysql</property> <property name="connection.driver_class">com.mysql/jdbc.Driver</property> <property name="connection.url">jdbc:mysql:///hibernate?userUnicode=true&characterEncoding=UTF-8</property> <property name="dialect">org.hibernate.dialect.MySQLDialect</property> <property name="show_sql">true</property> <property name="format_sql">true</property> <property name="hbm2ddl.auto"create></property> <mapping resource="Students.hbm.xml"/> </session-factory> </hibernate-configuration>
package hibernate;
import java.util.Date;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;
import org.hibernate.service.ServiceRegistryBuilder;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
public class StudentTest {
private SessionFactory sessionFactory;
private org.hibernate.Session session;
private org.hibernate.Transaction transaction;
@Before
public void init(){
//创建配置对象
Configuration config =new Configuration().configure();
//创建服务注册对象
ServiceRegistry serviceRegistry = new ServiceRegistryBuilder().applySettings(config.getProperties()).buildServiceRegistry();
//创建会话工厂对象
sessionFactory = config.buildSessionFactory(serviceRegistry);
//会话对象
session = sessionFactory.openSession();
//开启事务
transaction = session.beginTransaction();
}
@After
public void destory(){
transaction.commit();//提交事务
session.close();//关闭回话
sessionFactory.close();//关闭会话工厂
}
@Test
public void testSaveStudents(){
//生成学生对象
Students s=new Students(1,"张三丰","男",new Date(),"武当山");
session.save(s);//保存对象进数据库
}
}
哦!不是28是41行
28行有个空指针,,25行的那个不知道
能发一下代码吗


这个是Failure Trace
Hibernate初探之单表映射
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