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

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

User.hbm.xml

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

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

       
        
            
             
             
             
         
        
        
            
             
             
                 
                      
         
          org.hibernate.dialect.MySQLDialect
                       
         
          true
                       
         
          true
                   
              
             
             
                 
                      
         
          classpath:cn/sxt/vo/User.hbm.xml
                   
              
         
        
            
         
        
            
         
          
     

12.spring的声明式事务

 github地址：