java之spring之spring整合hibernate

这篇讲下spring和hibernate的整合

目录结构如下：

1.新建java项目

2.导入jar包

antlr-2.7.7.jar

aopalliance.jar

aspectjweaver.jar

commons-logging.jar

dom4j-1.6.1.jar

hibernate-commons-annotations-4.0.5.Final.jar

hibernate-core-4.3.10.Final.jar

hibernate-jpa-2.1-api-1.0.0.Final.jar

jandex-1.1.0.Final.jar

javassist-3.18.1-GA.jar

jboss-logging-3.1.3.GA.jar

jboss-logging-annotations-1.2.0.Beta1.jar

jboss-transaction-api_1.2_spec-1.0.0.Final.jar

mysql-connector-java-5.1.20-bin.jar

spring-aop-4.1.6.RELEASE.jar

spring-aspects-4.1.6.RELEASE.jar

spring-beans-4.1.6.RELEASE.jar

spring-context-4.1.6.RELEASE.jar

spring-core-4.1.6.RELEASE.jar

spring-expression-4.1.6.RELEASE.jar

spring-jdbc-4.1.6.RELEASE.jar

spring-orm-4.1.6.RELEASE.jar

spring-tx-4.1.6.RELEASE.jar

spring-web-4.1.6.RELEASE.jar

 3.编写vo类

User.java

 1 package cn.vincent.vo;
 2 
 3 import java.io.Serializable;
 4 
 5 public class User implements Serializable{
 6     private int id;
 7     private String name;
 8     private int age;
 9     public int getId() {
10         return id;
11     }
12     public void setId(int id) {
13         this.id = id;
14     }
15     public String getName() {
16         return name;
17     }
18     public void setName(String name) {
19         this.name = name;
20     }
21     public int getAge() {
22         return age;
23     }
24     public void setAge(int age) {
25         this.age = age;
26     }
27     
28 }

4.在src下，编写  hibernate.cfg.xml ，并且在cn.vincent.vo下编写vo类的映射文件 User.hbm.xml

hibernate.cfg.xml

configuration PUBLIC
    "-//Hibernate/Hibernate Configuration DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-configuration-3.0.dtd">
    

    
        
        com.mysql.jdbc.Driver
        
        jdbc:mysql:///test
        root
        root
        
        
        
        org.hibernate.dialect.MySQLDialect
        update
        
        true
        
        true

User.hbm.xml

<?xml version="1.0" encoding="UTF-8"?>
mapping PUBLIC 
    "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
    "http://www.hibernate.org/dtd/hibernate-mapping-3.0.dtd">
package="cn.vincent.vo">
        <class name="User" table="t_user">
        
            class="native">
        
        
        
    class>

5.准备好工具包 cn.vincent.util 下的 HibernateUtil.java 文件

HibernateUtil.java 

package cn.vincent.util;

import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.hibernate.boot.registry.StandardServiceRegistryBuilder;
import org.hibernate.cfg.Configuration;
import org.hibernate.service.ServiceRegistry;

public class HibernateUtil {
    private static Configuration cfg;
    private static ServiceRegistry registry;
    private static SessionFactory factory;
    private static ThreadLocal session;
    static{
        //初始化
        cfg = new Configuration().configure();
        registry = new StandardServiceRegistryBuilder()
                    .applySettings(cfg.getProperties())
                    .build();
        factory = cfg.buildSessionFactory(registry);
        session  =new ThreadLocal<>();
    }
    //获取连接
    public static Session getSession(){
        if(session.get()==null){
            session.set(factory.openSession());
        }
        return session.get();
    }
    //释放资源
    public static void close(){
        if(session.get()!=null){
            session.get().close();
            session.set(null);
        }
    }
}

6.编写 cn.vincent.dao 包下的 UserDao.java ,及cn.vincent.dao.impl下的 UserDaoImpl.java 文件

UserDao.java

package cn.vincent.dao;

import java.util.List;

import cn.vincent.vo.User;

public interface UserDao {

    public List findAll();
}

UserDaoImpl.java

package cn.vincent.dao.impl;

import java.util.List;

import org.hibernate.Session;

import cn.vincent.dao.UserDao;
import cn.vincent.util.HibernateUtil;
import cn.vincent.vo.User;

public class UserDaoImpl implements UserDao{

    @Override
    public List findAll() {
        Session session = HibernateUtil.getSession();
        return session.createQuery("from User").list();
    }

}

7.编写 cn.vincent.service 下的 UserService.java 和 cn.vincent.service.impl 下的 UserServiceImpl.java

UserService.java

package cn.vincent.service;
import java.util.List;

import cn.vincent.vo.User;


public interface UserService {
    public List findAll();
}

UserServiceImpl.java

package cn.vincent.service.impl;

import java.util.List;

import cn.vincent.dao.UserDao;
import cn.vincent.service.UserService;
import cn.vincent.vo.User;

public class UserServiceImpl implements UserService{
    private UserDao userDao;
    
    @Override
    public List findAll() {
        return     userDao.findAll();
    }
    public void setUserDao(UserDao userDao) {
        this.userDao = userDao;
    }
}

8.编写spring配置文件：beans.xml

<?xml version="1.0" encoding="UTF-8"?>

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd">
       
  class="cn.vincent.dao.impl.UserDaoImpl">
  class="cn.vincent.service.impl.UserServiceImpl">

9.编写测试

新建名为 test 的source folder,并且在cn.vincent.service 下添加 UserServiceTest.java文件

package cn.vincent.service;

import java.util.List;

import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import cn.vincent.vo.User;

public class UserServiceTest {

    @Test
    public void testFindAll(){
        ApplicationContext ac = new ClassPathXmlApplicationContext("beans.xml");
        UserService us = ac.getBean(UserService.class);
        List list = us.findAll();
        System.out.println(list.size());
    }
}

10.运行测试，查看效果

 结束！

补充：

11.在 spring 整合 hibernate 时，可以将 hibernate 的所有配置都写入 spring 中，这样就可以不要 hibernate.cfg.xml 配置文件：

beans.xml


    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://www.springframework.org/schema/beans
        http://www.springframework.org/schema/beans/spring-beans.xsd">
  
  class="org.springframework.jdbc.datasource.DriverManagerDataSource">
      
      
      
      
  
  
  class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
      
      
      
          
              org.hibernate.dialect.MySQLDialect
              true
              true
          
      
      
      
          
              classpath:cn/sxt/vo/User.hbm.xml
          
      
  
  class="cn.sxt.dao.impl.UserDaoImpl">
      
  
  class="cn.sxt.service.impl.UserServiceImpl">

12.spring的声明式事务


  
  class="org.springframework.orm.hibernate4.HibernateTransactionManager">

 github地址：https://github.com/Vincent-yuan/spring_hibernate

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