本文講述了簡(jiǎn)單的手工hibernate程序示例。分享給大家供大家參考。具體如下：
今天學(xué)習(xí)了下hibernate，寫(xiě)了個(gè)小的手工程序，總結(jié)下，
首先創(chuàng)建數(shù)據(jù)庫(kù)表：
復(fù)制代碼 代碼如下:
create table increment_testr(id bigint not null, name char(10), primary key(id));
eclipse下，新建工程。
新建數(shù)據(jù)庫(kù)表的映射，這里使用手工方式完成：
IncrementTester.java
public class IncrementTester {
private Long id;
private String name;
public IncrementTester(){}
public IncrementTester(String name){
this.name = name;
}
public Long getId(){
return this.id;
}
private void setId(Long id){
this.id = id;
}
public String getName(){
return this.name;
}
public void setName(String name){
this.name = name;
}
}
對(duì)應(yīng)編寫(xiě)映射xml文件
IncrementTester.hbm.xml
PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
private
實(shí)現(xiàn)具體功能的類BussinessService
import java.lang.reflect.*;
import org.hibernate.*;
import org.hibernate.cfg.*;
import java.io.*;
import java.sql.*;
import java.util.*;
public class BussinessService {
public static SessionFactory sessionFactory;
static{
try{
Configuration config = new Configuration().configure();
sessionFactory = config.buildSessionFactory();
}catch(Exception e){
e.printStackTrace();
}
}
public void findAllObjects(String className){
Session session = sessionFactory.openSession();
Transaction tx = null;
try{
tx = session.beginTransaction();
List objects = session.createQuery("from "+className).list();
for(Iterator it = objects.iterator();it.hasNext();){
Long id = new Long(0);
IncrementTester xx = (IncrementTester)it.next();
id=xx.getId();
System.out.println("ID of "+className+":"+id+" name: "+xx.getName());
}
tx.commit();
}catch(Exception e){
e.printStackTrace();
}finally{
session.close();
}
}
public void saveObject(Object object){
Session session = sessionFactory.openSession();
Transaction tx = null;
try{
tx = session.beginTransaction();
session.save(object);
tx.commit();
}catch(Exception e){
e.printStackTrace();
if(tx != null){
tx.rollback();
}
}finally{
session.close();
}
}
public void deleteAllObject(String className){
Session session = sessionFactory.openSession();
Transaction tx = null;
try{
tx = session.beginTransaction();
Query query=session.createQuery("delete from "+className);
query.executeUpdate();
tx.commit();
}catch(Exception e){
e.printStackTrace();
if(tx!=null){
tx.rollback();
}
}finally{
session.close();
}
}
}
實(shí)現(xiàn)主函數(shù)：
public class test {
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
String name="IncrementTester";
BussinessService aa = new BussinessService();
aa.deleteAllObject(name);
Object o1 = null;
try {
o1 = Class.forName(name).newInstance();
((IncrementTester)o1).setName("caijie");
aa.saveObject(o1);
o1 = Class.forName(name).newInstance();
((IncrementTester)o1).setName("gufeng");
aa.saveObject(o1);
} catch (Exception e) {
e.printStackTrace();
}
aa.findAllObjects(name);
}
}
hibernate配置文件：hibernate.cfg.xml
PUBLIC "-//Hibernate/Hibernate Configuration DTD//EN"
"http://hibernate.sourceforge.net/hibernate-configuration-3.0.dtd">
org.hibernate.dialect.MySQLDialect
com.mysql.jdbc.Driver
jdbc:mysql://localhost:3306/test
root
root
true
增加相應(yīng)的庫(kù)，運(yùn)行后成功得到結(jié)果：
Hibernate: delete from INCREMENT_TESTR
Hibernate: select max(ID) from INCREMENT_TESTR
Hibernate: insert into INCREMENT_TESTR (NAME, ID) values (?, ?)
Hibernate: insert into INCREMENT_TESTR (NAME, ID) values (?, ?)
Hibernate: select incrementt0_.ID as ID0_, incrementt0_.NAME as NAME0_ from INCREMENT_TESTR incrementt0_
ID of IncrementTester:1 name: caijie
ID of IncrementTester:2 name: gufeng
希望本文所述對(duì)大家的JSP程序設(shè)計(jì)有所幫助。
您可能感興趣的文章:- 詳解Java的Hibernate框架中的搜索工具的運(yùn)用
- 淺析Java的Hibernate框架中的緩存和延遲加載機(jī)制
- 解析Java的Hibernate框架中的持久化類和映射文件
