Java中使用Hibernate存储Date类型及Boolean类型到Orcale数据库中的心得

首先在Oracle中创建一个Customers的表：

create table CUSTOMERS

(

ID NUMBER default 0 not null,

NAME VARCHAR2(15) not null,

AGE NUMBER not null,

IS_STUDENT VARCHAR2(1) default 1 not null,

REGTIME DATE

);

/

接着编写对应的类Customers.java存放在src/entity目录下，注意下面的类中使用的Date类必须是在java.util.*包内，否则将会引起错误，另外boolean型的私有成员的命名不可以以is开头，否则将引发错误，比如isStudent：

package entity;

import java.io.Serializable;

import java.util.*;

public class Customers implements Serializable {

private Integer id;

private String name;

private int age;

private boolean student;

private Date regTime;

public Customers() {

}

public int getAge() {

return age;

}

public void setAge(int age) {

this.age = age;

}

public Integer getId() {

return id;

}

public void setId(Integer id) {

this.id = id;

}

public String getName() {

return name;

}

public void setName(String name) {

this.name = name;

}

public boolean isStudent() {

return student;

}

public void setStudent(boolean student) {

this.student = student;

}

public Date getRegTime() {

return regTime;

}

public void setRegTime(Date regTime) {

this.regTime = regTime;

}

}

为类创建对应的Mapping 文件Customers.hbm.xml存放在src/entity目录下，注意下面的regTime属性的type类型为java.util.Date：

<?xml version="1.0"?>

<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 2.0//EN" "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd"
>

<hibernate-mapping><!-- Created by the Middlegen Hibernate plugin http://boss.bekk.no/boss/middlegen/ http://hibernate.sourceforge.net/-->

<class name="entity.Customers" table="customers">

<id name="id" type="java.lang.Integer" column="id">

<generator class="assigned" />

</id>

<property name="name" type="java.lang.String" column="name" length="15" />

<property name="age" type="java.lang.Integer" column="age" length="11" />

<property name="student" type="java.lang.Boolean" column="IS_STUDENT" length="1" />

<property name="regTime" type="java.util.Date" column="regTime" />

</class>

</hibernate-mapping>

Hibernate配置文件存放在src目录下：

<?xml version='1.0' encoding='GB2312'?>

<!DOCTYPE hibernate-configuration

PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN"

"http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd">

<hibernate-configuration>

<session-factory>

<!-- 是否将运行期生成的SQL输出到日志以供调试 -->

<property name="show_sql">true</property>

<!-- Oracle方言，这里设定的是Oracle -->

<property name="dialect">net.sf.hibernate.dialect.Oracle9Dialect</property>

<!-- JDBC驱动程序 -->

<property name="connection.driver_class">oracle.jdbc.driver.OracleDriver</property>

<!-- JDBC URL-->

<property name="connection.url">jdbc:oracle:thin:@192.168.1.95:1521:XianBin</property>

<!-- 数据库用户名 -->

<property name="connection.username">system</property>

<!-- 数据库密码 -->

<property name="connection.password">pwd</property>

<!-- 数据库重新连接 -->

<property name="connection.autoReconnect">true</property>

<property name="connection.autoReconnectForPools">true</property>

<property name="connection.is-connection-validation-required">false</property>

<!-- 指定User的映射文件 -->

<mapping resource="entity/Customers.hbm.xml" />

</session-factory>

</hibernate-configuration>

创建useHibernate.java文件，存放在src/business目录下：

import entity.Customers;

import net.sf.hibernate.Session;

import net.sf.hibernate.SessionFactory;

import net.sf.hibernate.Transaction;

import net.sf.hibernate.cfg.Configuration;

public class useHibernate {

public static SessionFactory sessionFactory; // 初始化Hibernate，创建SessionFactory实例

public void saveCustomers(Customers customers) throws Exception {

Configuration config = null;

config = new Configuration().configure(); // 创建一个SessionFactory 实例

sessionFactory = config.buildSessionFactory();

Session session = sessionFactory.openSession();

Transaction tx = null;

try {

/* 开始一个事务 */

tx = session.beginTransaction();

session.save(customers); /* 提交事务 */

tx.commit();

} catch (Exception e) { // TODO Auto-generated catch block

if (tx != null)

tx.rollback();

throw e;

} finally {

session.close();

}

}

}

package business;