一、导入jar包。
1.hibernate的jar包
2.jdbc的jar包
二、配置Hibernate。建立hibernate.cfg.xml
mysql配置如下：
<!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>
<property name="hibernate.dialect">org.hibernate.dialect.MySQLDialect</property>
<property name="hibernate.connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password"></property>
<property name="hibernate.connection.url">jdbc:mysql://127.0.0.1:3306/fruit?characterEncoding=GBK</property>
<mapping resource="com/itnba/maya/bean/Fruit.hbm.xml"/> </session-factory>
</hibernate-configuration>
Oracle配置如下：
<!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>
<property name="hibernate.dialect">org.hibernate.dialect.Oracle8iDialect</property>
<property name="hibernate.connection.driver_class">oracle.jdbc.driver.OracleDriver</property>
<property name="hibernate.connection.username">root</property>
<property name="hibernate.connection.password"></property>
<property name="hibernate.connection.url">jdbc:oracle:thin:@localhost:1521:orcl</property>
<mapping resource="com/itnba/maya/bean/Fruit.hbm.xml"/> </session-factory>
</hibernate-configuration>
ORM
三、准备数据库
四、准备实体(建议使用：引用类型。建议类名属性名与列名一致)
package com.itnba.maya.bean;
public class Fruit {
private String ids;
private String name;
private Double price;
private String source;
private Integer numbers;
private String image;
public String getIds() {
return ids;
}
public void setIds(String ids) {
this.ids = ids;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Double getPrice() {
return price;
}
public void setPrice(Double price) {
this.price = price;
}
public String getSource() {
return source;
}
public void setSource(String source) {
this.source = source;
}
public Integer getNumbers() {
return numbers;
}
public void setNumbers(Integer numbers) {
this.numbers = numbers;
}
public String getImage() {
return image;
}
public void setImage(String image) {
this.image = image;
}
}
五、准备映射文件 实体类名.hbm.xml 例:Fruit.hbm.xml
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
<hibernate-mapping package="com.itnba.maya.bean"> <class name="Fruit" table="Fruit">
<id name="ids">
<generator class="assigned"/>
</id>
<property name="name"/>
<property name="price"/>
<property name="source"/>
<property name="numbers" />
<property name="image"/>
</class>
</hibernate-mapping>
六、通过hibernate进行数据库的增删改查
1.增：
package com.itnba.maya.test;
import org.hibernate.*;
import org.hibernate.cfg.*;
import com.itnba.maya.bean.Fruit;
public class Test1111 {
public static void main(String[] args) {
// TODO 自动生成的方法存根
Configuration config =new Configuration().configure();
SessionFactory factory =config.buildSessionFactory();
Session session =factory.openSession();
Fruit data = new Fruit();
data.setIds("s002");
data.setName("猕猴桃");
data.setPrice(10.0);
data.setNumbers(100);
data.setSource("博山");
try{
session.beginTransaction();
session.save(data);
session.getTransaction().commit();
}
catch(Exception ex){
session.getTransaction().rollback();
}
session.close();
} }
2.查找
package com.itnba.maya.test;
import java.util.*;
import org.hibernate.*;
import org.hibernate.cfg.*;
import com.itnba.maya.bean.Fruit;
public class Test1111 {
public static void main(String[] args) {
Configuration config =new Configuration().configure();
SessionFactory factory =config.buildSessionFactory();
Session session =factory.openSession();
Fruit data =session.load(Fruit.class, "k001");//查单条数据
List<Fruit> list = session.createQuery("from Fruit").getResultList();//查所有数据
}
}
3.删除（先查再删）
package com.itnba.maya.test;
import org.hibernate.*;
import org.hibernate.cfg.*;
import com.itnba.maya.bean.Fruit;
public class Test1111 {
public static void main(String[] args) {
Configuration config =new Configuration().configure();
SessionFactory factory =config.buildSessionFactory();
Session session =factory.openSession();
Fruit data =session.load(Fruit.class, "k001");
if(data != null){
try{
session.beginTransaction();
session.delete(data);
session.getTransaction().commit();
}
catch(Exception ex){
session.getTransaction().rollback();
}
}
}
}
4.改（先查再改）
package com.itnba.maya.test;
import org.hibernate.*;
import org.hibernate.cfg.*;
import com.itnba.maya.bean.Fruit;
public class Test1111 {
public static void main(String[] args) {
Configuration config =new Configuration().configure();
SessionFactory factory =config.buildSessionFactory();
Session session =factory.openSession();
Fruit data =session.load(Fruit.class, "k002");
if(data != null){
try{
session.beginTransaction();
data.setPrice(8.0);
data.setNumbers(110);
session.update(data);
session.getTransaction().commit();
}
catch(Exception ex){
session.getTransaction().rollback();
}
}
} }
