用Junit测试hibernate的时候出现了一个异常
小弟想用往mysql中插入一条数据,由于该表不存在我把配置里面的property name="hbm2ddl.auto"设置成了create,那么当我建表的时候就应该在数据库中创建相应的表并插入数据。但是测试通不过,出现了如下异常:
测试方法:
public class TeacherTest {
private static SessionFactory sf=null;
@BeforeClass
public static void beforClass(){
sf = new Configuration().configure().buildSessionFactory();
}
@Test
public void testSave(){
Teacher t = new Teacher();
t.setTeacher_ID(1);
t.setTeacher_Age(1);
t.setTeacher_Name("1");
t.setTeacher_Title("1");
Session session = sf.openSession();
session.beginTransaction();
session.save(t);
session.getTransaction().commit();
session.close();
}
@AfterClass
public static void afterClass(){
sf.close();
}
}
实体类:
package model;
import javax.persistence.Entity;
import javax.persistence.Id;
import javax.persistence.Table;
@Entity
@Table(name="_Teacher")
public class Teacher {
private int teacher_ID;
private String teacher_Name;
private int teacher_Age;
private String teacher_Title;
@Id
public int getTeacher_ID() {
return teacher_ID;
}
public void setTeacher_ID(int teacher_ID) {
this.teacher_ID = teacher_ID;
}
public String getTeacher_Name() {
return teacher_Name;
}
public void setTeacher_Name(String teacher_Name) {
this.teacher_Name = teacher_Name;
}
public int getTeacher_Age() {
return teacher_Age;
}
public void setTeacher_Age(int teacher_Age) {
this.teacher_Age = teacher_Age;
}
public String getTeacher_Title() {
return teacher_Title;
}
public void setTeacher_Title(String teacher_Title) {
this.teacher_Title = teacher_Title;
}
}
配置文件:
<?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>
<!-- Database connection settings -->
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://localhost/hibernate</property>
<property name="connection.username">root</property>
<property name="connection.password">root</property>
<!-- JDBC connection pool (use the built-in) -->
<!-- <property name="connection.pool_size">1</property> -->
<!-- SQL dialect -->
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<!-- Enable Hibernate's automatic session context management -->
<property name="current_session_context_class">thread</property>
<!-- Disable the second-level cache -->
<property name="cache.provider_class">org.hibernate.cache.NoCacheProvider</property>
<!-- Echo all executed SQL to stdout -->
<property name="show_sql">true</property>
<property name="format_sql">true</property>
<!-- Drop and re-create the database schema on startup -->
<!-- <property name="hbm2ddl.auto">create</property> -->