Hibernate – 手动配置环境
一、建立Web项目
二、添加Hibernate的库文件到WEB-INF/lib文件夹下
三、添加数据库的驱动到WEB-INF/lib文件夹下
四、添加Hibernate配置文件到项目的src下面
代码：
<?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">
<!-- Generated by MyEclipse Hibernate Tools. -->
<hibernate-configuration>
<session-factory>
<property name="hibernate.connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
<property name="hibernate.connection.url">jdbc:oracle:thin:@localhost:1521:myoracle</property>
<property name="hibernate.connection.username">scott</property>
<property name="hibernate.connection.password">tiger</property>
<property name="show_sql">true</property>
<property name="hibernate.dialect">org.hibernate.dialect.Oracle9Dialect</property>
<mapping resource="com/www/hibernate/pojo/User.hbm.xml" />
</session-factory>
</hibernate-configuration>
五、创建SessionFactory获取的工具类。
代码:
public class HibernateUtile {
private static SessionFactory factory;
static{
Configuration cfg = new Configuration().configure();
factory = cfg.buildSessionFactory();
}
public static SessionFactory getSessionFactory(){
return factory;
}
}
六、编写一个简单的实体类
代码:
public class User {
private int id;
private String userName;
private String passWord;
public User() {
super();
// TODO Auto-generated constructor stub
}
public User(int id, String userName, String passWord) {
super();
this.id = id;
this.userName = userName;
this.passWord = passWord;
}
public int getId() {
return id;
}
public void setId(int 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;
}
@Override
public String toString() {
return "User [id=" + id + ", passWord=" + passWord + ", userName="
+ userName + "]";
}
}
七、编写一个简单的映射文件。
代码:
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<class name="com.www.hibernate.pojo.User">
<id name="id">
<generator class="native"></generator>
</id>
<property name="passWord"></property>
<property name="userName"></property>
</class>
</hibernate-mapping>
八、实现一个表的增删改查
代码:
public class Test {
public static void main(String[] args) {
create();
}
public static void create(){
Configuration cfg = new Configuration().configure();
SchemaExport export = new SchemaExport(cfg);
export.create(true, true);
}
}
public static void delUser(){
Session session = HibernateUtils.getSessionFactory().openSession();
Transaction tran = session.beginTransaction();
User user = new User();
user.setId(1);
session.delete(user);
tran.commit();
session.close();
}
public static void updateUpdate(){
Session session = HibernateUtils.getSessionFactory().openSession();
Transaction tran = session.beginTransaction();
User user = new User();
user.setId(2);
user.setPassWord("321");
user.setUserName("qqq");
session.saveOrUpdate(user);
tran.commit();
session.close();
}
public static void updateSaveOrUpdate(){
User user = new User();
user.setId(1);
user.setPassWord("321");
user.setUserName("qqq");
Session session = HibernateUtils.getSessionFactory().openSession();
Transaction tran = session.beginTransaction();
session.saveOrUpdate(user);
tran.commit();
session.close();
}
public static void queryAll(){
Session session = HibernateUtils.getSessionFactory().openSession();
Transaction tran = session.beginTransaction();
Query query = session.createQuery("from User");
List<User> list = query.list();
for(User user:list){
System.out.println(user);
}
tran.commit();
session.close();
}
public static void queryId(){
Session session = HibernateUtils.getSessionFactory().openSession();
Transaction tran = session.beginTransaction();
User user = (User)session.get(User.class, new Integer(1));
System.out.println(user);
tran.commit();
session.close();
}
public static void addUser(){
User user = new User();
user.setPassWord("321");
user.setUserName("qqq");
Session session = HibernateUtils.getSessionFactory().openSession();
Transaction tran = session.beginTransaction();
session.save(user);
tran.commit();
session.close();
}