标签：方言 方法 配置 cto 数据库驱动 version 驱动 tab dial
一、基础Hibernate环境搭建（参见http://www.cnblogs.com/sangewuxie/p/9004968.html）
二、实体类User及User.hbm.xml配置
1.User类
package com.domain;
public class User {
private Integer id;
private String username;
private String password;
private Integer age;
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;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}
@Override
public String toString() {
return "User [id=" + id + ", username=" + username + ", password=" + password + ", age=" + age + "]";
}
}
2.User.hbm.xml
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<!-- name: 完整类名 table:数据库表名 -->
<class name="com.domain.User" table="user">
<!-- id配置表的主键 name代表表中属性 -->
<id name="id" column="id">
<!-- 主键生成策略 -->
<generator class="native"></generator>
</id>
<property name="username" column="username" type="string"></property>
<property name="password" column="password" type="string"></property>
<property name="age" column="age" type="integer"></property>
</class>
</hibernate-mapping>
三、hibernate.cfg.xml
<?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> <!-- 指定方言 --> <property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property> <!-- 数据库驱动 --> <property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property> <!-- 数据库url --> <property name="hibernate.connection.url">jdbc:mysql://localhost:3306/hibernate02_1514010311</property> <!-- 数据库连接用户名 --> <property name="hibernate.connection.username">root</property> <!-- 数据库连接密码 --> <property name="hibernate.connection.password">0x3137</property> <!-- 将hibernate生成的sql语句打印到控制台 --> <property name="hibernate.show_sql">true</property> <!-- 将hibernate生成的sql语句格式化(语法缩进) --> <property name="hibernate.format_sql">true</property> <mapping resource="com/domain/User.hbm.xml" /> </session-factory> </hibernate-configuration>
四、HibernateUtil
在这个工具类中写一个通过静态代码块生成唯一的SessionFactory，通过一个方法返回一个SessionFactory
package com.util; import org.hibernate.SessionFactory; import org.hibernate.cfg.Configuration; public class HibernateUtil { private static Configuration cfg; private static SessionFactory sessionFactory; static { try { cfg = new Configuration().configure(); sessionFactory = cfg.buildSessionFactory(); }catch (Exception e) { e.printStackTrace(); } } public static SessionFactory getSessionFactory() { return sessionFactory; } }
五、测试类TestUser
package com.test; import org.hibernate.Session; import org.hibernate.SessionFactory; import org.hibernate.Transaction; import org.junit.Test; import com.domain.User; import com.util.HibernateUtil; public class TestUser { @Test public void saveUser() { SessionFactory sessionFactory = null; Session session = null; Transaction transaction = null; User user = new User(); user.setUsername("三哥无邪"); user.setPassword("1514010311"); user.setAge(21); try { sessionFactory = HibernateUtil.getSessionFactory(); session = sessionFactory.openSession(); transaction = session.beginTransaction(); session.save(user); transaction.commit(); } catch (Exception e) { if (transaction!=null) { transaction.rollback(); } e.printStackTrace(); }finally { if(session!=null) { session.close(); } } } @Test public void updateUser() { SessionFactory sessionFactory = null; Session session = null; Transaction transaction = null; try { sessionFactory = HibernateUtil.getSessionFactory(); session = sessionFactory.openSession(); transaction = session.beginTransaction(); User user = session.get(User.class, 1); user.setUsername("三哥无邪啊"); user.setPassword("1514010311"); user.setAge(21); session.update(user); transaction.commit(); } catch (Exception e) { if (transaction!=null) { transaction.rollback(); } e.printStackTrace(); }finally { if(session!=null) { session.close(); } } } @Test public void queryUser() { SessionFactory sessionFactory = null; Session session = null; Transaction transaction = null; try { sessionFactory = HibernateUtil.getSessionFactory(); session = sessionFactory.openSession(); transaction = session.beginTransaction(); User user = session.get(User.class, 2); System.out.println("ID:"+user.getId()+" 用户名："+user.getUsername()+" 密码："+user.getPassword()); transaction.commit(); } catch (Exception e) { if (transaction!=null) { transaction.rollback(); } e.printStackTrace(); }finally { if(session!=null) { session.close(); } } } @Test public void deleteUser() { SessionFactory sessionFactory = null; Session session = null; Transaction transaction = null; try { sessionFactory = HibernateUtil.getSessionFactory(); session = sessionFactory.openSession(); transaction = session.beginTransaction(); User user = session.get(User.class, 1); session.delete(user); transaction.commit(); } catch (Exception e) { if (transaction!=null) { transaction.rollback(); } e.printStackTrace(); } } }
测试一次saveUser方法，结果如图
就此获取单例模式的SessionFactory的方式就完成了
标签：方言 方法 配置 cto 数据库驱动 version 驱动 tab dial
原文地址：https://www.cnblogs.com/sangewuxie/p/9028155.html
