20、spring+hibernate+mysql实例

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20、spring+hibernate+mysql实例

spring和hibernate的框架集成：

实例：

先来创建一个数据库和表：

/*
Navicat MySQL Data Transfer

Source Server         : admin
Source Server Version : 50710
Source Host           : localhost:3306
Source Database       : spring_hibernate

Target Server Type    : MYSQL
Target Server Version : 50710
File Encoding         : 65001

Date: 2017-02-21 20:15:22
*/

SET FOREIGN_KEY_CHECKS=0;

-- ----------------------------
-- Table structure for user
-- ----------------------------
DROP TABLE IF EXISTS `user`;
CREATE TABLE `user` (
  `id` int(100) NOT NULL AUTO_INCREMENT,
  `name` varchar(255) DEFAULT NULL,
  `pass` varchar(255) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=5 DEFAULT CHARSET=utf8;

以下是工程的目录结构：

---

下面贴上源代码：

User.java

package com.main.hibernate.model;

public class User {

    private int id;
    private String name;
    private String pass;
    //setter and getter methods
    //toString methods
}

---

UserDAO.java

package com.main.hibernate.DAO;

import com.main.hibernate.model.User;

public interface UserDAO {

    public void add(User user);
    public void delete(User user);
    public void update(User user);
    public User select(String name);

 }

---

UserDAOImpl.java

package com.main.hibernate.DAOImpl;

import com.main.hibernate.DAO.UserDAO;
import com.main.hibernate.model.User;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

//继承HibernateDaoSupport类
public class UserDAOImpl extends HibernateDaoSupport  implements UserDAO{

    public void add(User user) {
        getHibernateTemplate().save(user);

    }

    public void delete(User user) {
        getHibernateTemplate().delete(user);

    }

    public void update(User user) {
        getHibernateTemplate().update(user);

    }

    public User select(String name) {
        return (User)getHibernateTemplate().find("from User where name=?",name).get(0);

    }
}

---

UserService.java

package com.main.hibernate.Service;

import com.main.hibernate.model.User;

public interface UserService {
    public void add(User user);
    public void delete(User user);
    public void update(User user);
    public User select(String user);
}

---

UserServiceImpl.java

package com.main.hibernate.ServiceImpl;

import com.main.hibernate.DAO.UserDAO;
import com.main.hibernate.Service.UserService;
import com.main.hibernate.model.User;

public class UserServiceImpl implements UserService{

    UserDAO userDAO;

    public void setUserDAO(UserDAO userDAO){

        this.userDAO = userDAO;

    }
    public void add(User user) {

        userDAO.add(user);

    }

    public void delete(User user) {
        userDAO.delete(user);

    }

    public void update(User user) {
        userDAO.update(user);

    }

    public User select(String name) {

        return userDAO.select(name);
    }

}

---

---

以下是spring+hibernate的各个配置文件

database.properties

jdbc.driverClassName=com.mysql.jdbc.Driver
jdbc.url=jdbc:mysql://localhost:3306/spring_hibernate
jdbc.username=root
jdbc.password=12345678(记得换上你的数据库连接密码)

---

hibernate.xml（这相当于独立hibernate框架下的hibernate.cfg.xml）

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
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-2.5.xsd">

<!-- 相当于hibernate.cfg.xml -->
<!-- Hibernate session factory -->
<bean id="sessionFactory" 
     class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">

    <!-- 调用连接关键字 -->
    <property name="dataSource">
      <ref local="dataSource"/>
    </property>

    <!-- 设置hibernate框架属性 -->
    <property name="hibernateProperties">
       <props>
         <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
         <prop key="hibernate.connection.autocommit">true</prop>
         <prop key="hibernate.show_sql">true</prop>
       </props>
     </property>

    <!-- 导入映射文件 -->
     <property name="mappingResources">
        <list>
               <value>/com/main/hibernate/resources/User.hbm.xml</value>
        </list>
      </property>   
</bean>

<bean 
    class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
    <property name="location">
        <value>com/main/hibernate/resources/database.properties</value>
    </property>
</bean>

<bean id="dataSource" 
     class="org.springframework.jdbc.datasource.DriverManagerDataSource">
    <property name="driverClassName" value="${jdbc.driverClassName}" />
    <property name="url" value="${jdbc.url}" />
    <property name="username" value="${jdbc.username}" />
    <property name="password" value="${jdbc.password}" />
</bean>


</beans>

---

User.hbm.xml

<?xml version="1.0"?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">

<hibernate-mapping>
    <class name="com.main.hibernate.model.User" table="user" catalog="spring_hibernate">
        <id name="id" type="int">
            <column name="id" />
            <generator class="identity" />
        </id>
         <property name="name" type="string">
            <column name="name"  />
        </property>
        <property name="pass" type="string">
            <column name="pass" />
        </property>
    </class>
</hibernate-mapping>

---

bean.xml（用于注册userService和userDAO）

<beans xmlns="http://www.springframework.org/schema/beans"
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-2.5.xsd">

    <!-- Stock business object -->
   <bean id="userService" class="com.main.hibernate.ServiceImpl.UserServiceImpl" >
        <property name="userDAO" ref="userDAO" />
   </bean>

   <!-- Stock Data Access Object -->
   <bean id="userDAO" class="com.main.hibernate.DAOImpl.UserDAOImpl" >
        <property name="sessionFactory" ref="sessionFactory"></property>
   </bean>

</beans>

---

spring-module.xml（spring容器）

<beans xmlns="http://www.springframework.org/schema/beans"
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-2.5.xsd">

    <!-- Database Configuration -->
    <import resource="Hibernate.xml"/>

    <!-- Beans Declaration -->
    <import resource="bean.xml"/>

</beans>

---

最后是测试代码： UnitTest.java

package com.main.hibernate.app;

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

import com.main.hibernate.Service.UserService;
import com.main.hibernate.model.User;

public class UnitTest {

    @Test
    public void test(){
        ApplicationContext appContext = 
                  new ClassPathXmlApplicationContext("com/main/hibernate/resources/spring-module.xml");

        UserService us = (UserService)appContext.getBean("userService");

        User u = new User();
        u.setName("jack");
        u.setPass("123");
        us.add(u);
    }
}

---

运行test方法进行测试：
结果如下：

再来看看数据库