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Hibernate之Hibernate环境配置
Hibernate之Hibernate环境配置
一、Hibernate环境搭建的步骤
1.添加Hibernate && SQLServer 的Jar
antlr-2.7.7.jar
dom4j-1.6.1.jar
hibernate-commons-annotations-4.0.5.Final.jar
hibernate-core-4.3.11.Final.jar
hibernate-jpa-2.1-api-1.0.0.Final.jar
jandex-1.1.0.Final.jar
javassist-3.18.1-GA.jar
jboss-logging-3.1.3.GA.jar
jboss-logging-annotations-1.2.0.Beta1.jar
jboss-transaction-api_1.2_spec-1.0.0.Final.jar
sqljdbc4.jar
2.创建JavaBean类:User.java
package cn.com.zfc.hibernate.entities;
/**
*
* @title User
* @describe Hibernate 的 POJO
* @author 张富昌
* @date 2017年4月7日下午10:47:27
*/
public class User {
private Integer id;
private String userName;
private String userDesc;
public User() {
super();
}
public User(String userName, String userDesc) {
super();
this.userName = userName;
this.userDesc = userDesc;
}
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 getUserDesc() {
return userDesc;
}
public void setUserDesc(String userDesc) {
this.userDesc = userDesc;
}
@Override
public String toString() {
return "User [id=" + id + ", userName=" + userName + ", userDesc=" + userDesc + "]";
}
}
3.使用Xxx.hbm.xml 映射文件映射JavaBean属性到数据库表之间的映射关系：User.hbm.xml
<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<!-- Generated 2017-3-19 13:53:52 by Hibernate Tools 3.5.0.Final -->
<!-- 一般写 package，简化全类名 -->
<hibernate-mapping package="cn.com.zfc.hibernate.entities">
<class name="User" table="USERS">
<!-- 映射主键，id：属性，column：字段 -->
<id name="id" type="java.lang.Integer">
<column name="ID" />
<!-- 主键生成策略 -->
<generator class="native" />
</id>
<!-- 映射普通字段，property：属性，column：字段 -->
<property name="userName" type="java.lang.String">
<column name="USER_NAME" />
</property>
<property name="userDesc" type="java.lang.String">
<column name="USER_DESC" />
</property>
</class>
</hibernate-mapping>
4.在hibernate.cfg.xml Hibernate配置文件中配置Hibernate 数据源及相关属性：在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>
<!-- Hibernate 的基本配置 -->
<!-- 数据源信息配置 -->
<!-- 数据库用户名 -->
<property name="hibernate.connection.username">sa</property>
<!-- 数据库密码 -->
<property name="hibernate.connection.password">123456</property>
<!-- 数据库驱动宝 -->
<property name="hibernate.connection.driver_class">com.microsoft.sqlserver.jdbc.SQLServerDriver</property>
<!-- 不指定数据库名称，可以在映射文件中指定数据库名称 -->
<property name="hibernate.connection.url">jdbc:sqlserver://localhost:1433;DatabaseName=hibernate-01</property>
<!-- 指定在控制台输出 SQL 语句，便于调试 -->
<property name="show_sql">true</property>
<!-- 格式化 SQL 语句 -->
<property name="format_sql">true</property>
<!-- 指定数据库生成策略 -->
<property name="hbm2ddl.auto">update</property>
<!-- 配置数据库方言 -->
<property name="dialect">org.hibernate.dialect.SQLServerDialect</property>
<!-- 注册 Hibernate 映射文件 -->
<mapping resource="cn/com/zfc/hibernate/entities/User.hbm.xml" />
</session-factory>
</hibernate-configuration>
5.使用Hibernate ORM框架完成对JavaBean对象的操作
①创建Configuration对象
Configuration configuration = new Configuration().configure();
②创建SessionFactory 工厂类
ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder().applySettings(configuration.getProperties()).build();
SessionFactory sessionFactory = configuration.buildSessionFactory(serviceRegistry);
③创建Session对象
Session session = sessionFactory.openSession();
④开启事物 Transaction（查询不需要事务）
Transaction transaction = session.beginTransaction();
⑤执行业务******
CRUD操作
⑥提交事物
transaction.commit();
⑦关闭会话
session.close();
⑧关闭 SessionFactory
sessionFactory.close();
6.数据库：hibernate-01
数据表：users
二、JUNIT 单元测试初识
1.单元测试的基本概念
2.使用Junit 搭建Hibernate 测试环境
3.@Test @Before @After
4.Hibernate 环境的测试：TestHibernate.java
package cn.com.zfc.hibernate.test;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.Transaction;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import cn.com.zfc.hibernate.entities.User;
/**
*
* @title TestHibernate
* @describe 测试 Hibernate 的环境
* @author 张富昌
* @date 2017年4月7日下午10:47:05
*/
public class TestHibernate {
private Configuration configuration = null;
private SessionFactory sessionFactory = null;
private Session session = null;
private Transaction transaction;
@Before
public void init() {
configuration = new Configuration().configure();
ServiceRegistry serviceRegistry = new StandardServiceRegistryBuilder().applySettings(configuration.getProperties()).build();
sessionFactory = configuration.buildSessionFactory(serviceRegistry);
session = sessionFactory.openSession();
transaction = session.beginTransaction();
}
@After
public void destory() {
transaction.commit();
session.close();
sessionFactory.close();
}
// 添加
@Test
public void testSave() {
User user = new User("UU-1", "爱生活，爱编程");
session.save(user);
}
// 立即加载
@Test
public void testGet() {
User user = (User) session.get(User.class, 1);
System.out.println("user:" + user);
}
// 延迟加载：当数据真正使用时在开始加载
@Test
public void testLoad() {
User user = (User) session.load(User.class, 1);
System.out.println("user:" + user);
}
// 删除
@Test
public void testDelete() {
User user = (User) session.load(User.class, 4);
session.delete(user);
}
// 修改
@Test
public void testUpdate() {
User user = (User) session.load(User.class, 1);
user.setUserDesc("我是修改过的东西");
session.update(user);
}
@Test
public void dataSource() {
}
}
Hibernate之Hibernate环境配置