spring保存一条数据库记录

package com.yjm.pojo;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.cfg.Configuration;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class TestH {

//保存一条记录
public  void test1() {
Configuration conf = new Configuration().configure();
SessionFactory sessionFactory = conf.buildSessionFactory();
Session session = sessionFactory.openSession();
session.beginTransaction().begin();
UserInfo u = new UserInfo();
u.setPassword("password");
u.setUsername("username");
session.save(u);
session.getTransaction().commit();
}
//保存一条记录
public void test2() {
ApplicationContext ac = new ClassPathXmlApplicationContext(
"spring_dao.xml");
System.out.println(ac.getBean("sessionfactory"));
System.out.println(ac.getBean("sessionfactory"));
Session session = ((SessionFactory) ac.getBean("sessionfactory"))
.openSession();
UserInfo u = new UserInfo();
u.setPassword("password");
u.setUsername("username");
session.beginTransaction().begin();
session.save(u);
session.getTransaction().commit();
}
//保存一条记录
public void test3() {
ApplicationContext ac = new ClassPathXmlApplicationContext(
"spring_dao.xml");
System.out.println(ac.getBean("sessionfactory"));
System.out.println(ac.getBean("sessionfactory"));
Session session = ((SessionFactory) ac.getBean("sessionfactory"))
.getCurrentSession();
Session session1 = ((SessionFactory) ac.getBean("sessionfactory"))
.getCurrentSession();
// 输出值
// org.hibernate.impl.SessionFactoryImpl@128edf2
// org.hibernate.impl.SessionFactoryImpl@128edf2
System.out.println(session);
System.out.println(session1);
UserInfo u = new UserInfo();
u.setPassword("password");
u.setUsername("username");
session.beginTransaction().begin();
session.save(u);
session.getTransaction().commit();
}
//保存一条记录

public void test4() {
ApplicationContext ac = new ClassPathXmlApplicationContext(
"spring_dao.xml");
//		org.hibernate.impl.SessionFactoryImpl@128edf2
//		org.hibernate.impl.SessionFactoryImpl@128edf2
System.out.println(ac.getBean("sessionfactory"));
System.out.println(ac.getBean("sessionfactory"));
UserInfo u = new UserInfo();
u.setPassword("password");
u.setUsername("username");
((SessionFactory) ac.getBean("sessionfactory")).getCurrentSession()
.beginTransaction().begin();
((SessionFactory) ac.getBean("sessionfactory")).getCurrentSession()
.save(u);
((SessionFactory) ac.getBean("sessionfactory")).getCurrentSession()
.getTransaction().commit();

}

@Test
public void test5() {
ApplicationContext ac = new ClassPathXmlApplicationContext(
"spring_dao.xml");
SessionFactory sessionFactory = (SessionFactory) ac
.getBean("sessionfactory");
Session session = sessionFactory.openSession();
session.beginTransaction().begin();
UserInfo u = (UserInfo) session.get(UserInfo.class, 5l);
System.out.println("get:" + u.getId());

List<UserInfo> userinfos = session.createCriteria(UserInfo.class).add(
Restrictions.eq("password", "password")).add(
Restrictions.eq("username", "username")).list();

int userinfos1 = ((Integer) (session.createCriteria(UserInfo.class)
.add(Restrictions.eq("password", "password")).add(
Restrictions.eq("username", "username")).setProjection(
Projections.rowCount()).uniqueResult())).intValue();
System.out.println("获取的总数数目:" + userinfos1);

System.out.println("总数:" + userinfos.size());
for (UserInfo userInfo : userinfos) {
System.out.println(userInfo.getPassword());
System.out.println(userInfo.getId());
}
session.getTransaction().commit();
}

}

getCurrentSession() 有就用当前的，没有就创建。openSession()创建
spring配置

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context"
xmlns:p="http://www.springframework.org/schema/p" xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-3.0.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd"> 
<bean id="sessionfactory"
class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">
<property name="configLocation" value="classpath:hibernate.cfg.xml"></property>
</bean>

</beans>

hibernate配置

<?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">
<hibernate-configuration>
<session-factory>

<!-- MySql数据库 -->

<property name="connection.url">
jdbc:mysql://localhost:3306/mdmtest?useUnicode=true&characterEncoding=UTF-8
</property>
<property name="connection.username">root</property>
<property name="connection.password">1234</property>
<property name="connection.driver_class">com.mysql.jdbc.Driver</property>
<property name="dialect">
org.hibernate.dialect.MySQLDialect
</property>
<property name="show_sql">true</property>
<property name="hbm2ddl.auto">update</property>
<property name="connection.autocommit">true</property>
<property name="hibernate.current_session_context_class">thread</property>
<!-- configuration pool c3p0-->
<property name="hibernate.connection.provider_class">
org.hibernate.connection.C3P0ConnectionProvider
</property>
<property name="c3p0.min_size">10</property>
<property name="c3p0.max_size">50</property>
<property name="c3p0.maxIdleTime">180</property>
<property name="c3p0.time_out">1800</property>
<property name="c3p0.max_statement">0</property>
<property name="c3p0.acquire_increment">1</property>
<property name="c3p0.idle_test_period">120</property>
<property name="c3p0.validate">true</property>
<mapping resource="com/yjm/pojo/userinfo.hbm.xml" />
</session-factory>
</hibernate-configuration>

spring HibernateDaoSupport 是一个抽象类，
private HibernateTemplate hibernateTemplate;
用hibernate sessionFactory setSessionFactory 初始化 hiberntateTemplate方法

private HibernateTemplate hibernateTemplate;

/*jadclipse*/// Decompiled by Jad v1.5.8g. Copyright 2001 Pavel Kouznetsov.
// Jad home page: http://www.kpdus.com/jad.html // Decompiler options: packimports(3) radix(10) lradix(10)
// Source File Name:   HibernateDaoSupport.java

package org.springframework.orm.hibernate3.support;

import org.hibernate.*;
import org.springframework.dao.DataAccessException;
import org.springframework.dao.DataAccessResourceFailureException;
import org.springframework.dao.support.DaoSupport;
import org.springframework.orm.hibernate3.HibernateTemplate;
import org.springframework.orm.hibernate3.SessionFactoryUtils;

public abstract class HibernateDaoSupport extends DaoSupport {

public HibernateDaoSupport() {
}

public final void setSessionFactory(SessionFactory sessionFactory) {
if (hibernateTemplate == null
|| sessionFactory != hibernateTemplate.getSessionFactory())
hibernateTemplate = createHibernateTemplate(sessionFactory);
}

protected HibernateTemplate createHibernateTemplate(
SessionFactory sessionFactory) {
return new HibernateTemplate(sessionFactory);
}

public final SessionFactory getSessionFactory() {
return hibernateTemplate == null ? null : hibernateTemplate
.getSessionFactory();
}

public final void setHibernateTemplate(HibernateTemplate hibernateTemplate) {
this.hibernateTemplate = hibernateTemplate;
}

public final HibernateTemplate getHibernateTemplate() {
return hibernateTemplate;
}

protected final void checkDaoConfig() {
if (hibernateTemplate == null)
throw new IllegalArgumentException(
"'sessionFactory' or 'hibernateTemplate' is required");
else
return;
}

protected final Session getSession()
throws DataAccessResourceFailureException, IllegalStateException {
return getSession(hibernateTemplate.isAllowCreate());
}

protected final Session getSession(boolean allowCreate)
throws DataAccessResourceFailureException, IllegalStateException {
return allowCreate ? SessionFactoryUtils.getSession(
getSessionFactory(), hibernateTemplate.getEntityInterceptor(),
hibernateTemplate.getJdbcExceptionTranslator())
: SessionFactoryUtils.getSession(getSessionFactory(), false);
}

protected final DataAccessException convertHibernateAccessException(
HibernateException ex) {
return hibernateTemplate.convertHibernateAccessException(ex);
}

protected final void releaseSession(Session session) {
SessionFactoryUtils.releaseSession(session, getSessionFactory());
}

private HibernateTemplate hibernateTemplate;
}

/*
DECOMPILATION REPORT

Decompiled from: C:\Users\yjm18\Workspaces\MyEclipse 8.6\BaseCKS\WebRoot\WEB-INF\lib\org.springframework.orm-3.1.0.RELEASE.jar
Total time: 48 ms
Jad reported messages/errors:
Exit status: 0
Caught exceptions:
*/

Hibernate: select userinfo0_.t_id as t1_0_0_, userinfo0_.t_username as t2_0_0_, userinfo0_.t_password as t3_0_0_ from t_userinfo userinfo0_ where userinfo0_.t_id=?
get:5
Hibernate: select this_.t_id as t1_0_0_, this_.t_username as t2_0_0_, this_.t_password as t3_0_0_ from t_userinfo this_ where this_.t_password=? and this_.t_username=?
Hibernate: select count(*) as y0_ from t_userinfo this_ where this_.t_password=? and this_.t_username=?
获取的总数数目:7
总数:7
password
2
password
3
password
4
password
5
password
6
password
7
password
8