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数据库用的是mysql5.0;
脚本如下:
 use test;
create table person
(
id int AUTO_INCREMENT primary key,
username varchar(20),
password varchar(20)
);
insert into person values(null,'ts','ts');
实体类用Annotation映射,代替hbm.
package com.vo;
import java.io.Serializable;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.Table;
  @SuppressWarnings( { "unchecked", "serial" })
@Entity //标识是一个实体
@Table(name="person") //映射表
public class Person implements Serializable
{
 //主键映射
@Id
//主键自增
@GeneratedValue(strategy=GenerationType.AUTO)
private Integer id;
//@Column(name="username"),对于列,可映射也可以不映射.注意保持列名和属性名一致就行
private String username;
private String password;
public Integer getId()
  {
return id;
 }
public void setId(Integer id)
{
this.id = id;
}
public String getUsername()
{
return username;
}
public void setUsername(String username)
{
this.username = username;
}
public String getPassword()
{
return password;
}
public void setPassword(String password)
{
this.password = password;
}
 }
hibernate.cfg.xml配置文件:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-configuration PUBLIC
"-//Hibernate/Hibernate Configuration DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
<hibernate-configuration>
<session-factory>
<property name="dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="connection.url">jdbc:mysql://localhost:3306/test</property>
<property name="connection.username">root</property>
<property name="connection.password">root</property>
<property name="show_sql">true</property>
<!-- 实体类映射 -->
<mapping class="com.vo.Person"/>
</session-factory>
</hibernate-configuration>
测试类:
package com.test;
import java.util.List;
import org.hibernate.Session;
import org.hibernate.Transaction;
import org.hibernate.cfg.AnnotationConfiguration;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import static org.junit.Assert.*;
import com.vo.Person;
public class PersonTest
{
private Session session;
private Transaction tx;
@Before
public void before()
{
session = new AnnotationConfiguration().configure()
.buildSessionFactory().openSession();
tx = session.getTransaction();
}
@After
public void after()
{
session.close();
}
@Test
public void testSave()
{
tx.begin();
Person person = new Person();
person.setUsername("zdw");
person.setPassword("admin");
session.save(person);
tx.commit();
}
@Test
public void testUpdate()
{
tx.begin();
Person person = (Person) session.load(Person.class, 1);
person.setPassword("test");
session.update(person);
tx.commit();
}
@SuppressWarnings("unchecked")
@Test
public void testQueryAll()
{
List<Person> persons = session.createCriteria(Person.class).list();
assertNotNull(persons);
}
@Test
public void testDelete()
{
Person person = (Person) session.load(Person.class, 1);
session.delete(person);
}
}
经测试,增删改查全部正常.
这样的确很方便了.
源码可以在我的网盘下载. 点此下载
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