1.1 问题
使用Spring整合Hibernate,并实现资费表的增、删、改、查。
1.2 方案
Spring整合Hibernate的步骤:
1.3 步骤
实现此案例需要按照如下步骤进行。
采用的环境是eclipse ,jdk 7.0 ,Tomcat7.0 ,Spring 3.2 ,Hibernate 3.2 。
步骤一:导包
创建WEB项目SpringHibernate,并导入数据库驱动包、Hibernate开发包以及Spring开发包,完成后项目中包结构如下图
然后,增加到类编译中。
Hibernate 3.2 jar包下载: http://yunpan.cn/cmRG5gzdMtGMX 访问密码 3747
Spring 3.2 jar包下载: http://yunpan.cn/cdXTcJtZfJqQk 访问密码 6c96
Mysql jar包:http://yunpan.cn/cmv3BGe9CkUr3 访问密码 3601
步骤二:配置applicationContext.xml
引入Spring配置文件applicationContext.xml,放在src根路径下。在该文件中配置数据源、SessionFactory、开启组件扫描、声明式事务,代码如下
<?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:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:jee="http://www.springframework.org/schema/jee"
xsi:schemaLocation="
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.5.xsd"> <!-- 配置数据源 -->
<bean id="ds" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close"> <!-- 配置连接参数 -->
<property name="jdbcUrl" value="jdbc:mysql://localhost:3306/cnblogs"/>
<property name="driverClass" value="com.mysql.jdbc.Driver"/>
<property name="user" value="root"/>
<property name="password" value="123456"/> <!-- 配置连接池 -->
<property name="initialPoolSize" value="3"/>
<property name="maxPoolSize" value="10"/>
<property name="minPoolSize" value="1"/>
<property name="acquireIncrement" value="3"/>
<property name="maxIdleTime" value="60"/> </bean> <!-- 配置SessionFactory -->
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <!-- 依赖数据源 -->
<property name="dataSource" ref="ds"/>
<!-- Hibernate框架相关配置 -->
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.formate_sql">true</prop>
</props>
</property>
<property name="mappingResources">
<list>
<value>com/souvc/entity/Cost.hbm.xml</value>
</list>
</property>
</bean> <!-- 开启注解扫描 -->
<context:component-scan base-package="com.souvc"/> <!-- 声明式事务管理,采用AOP形式切入 -->
<bean id="txManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean> <tx:advice id="txAdvice" transaction-manager="txManager">
<tx:attributes>
<tx:method name="update*" propagation="REQUIRED" />
<tx:method name="delete*" propagation="REQUIRED" />
<tx:method name="add*" propagation="REQUIRED" />
<tx:method name="load*" read-only="true" />
<tx:method name="execute" propagation="REQUIRED" />
</tx:attributes>
</tx:advice> <aop:config proxy-target-class="true">
<aop:advisor advice-ref="txAdvice"
pointcut="within(com.souvc.action.*)" />
</aop:config> </beans>
步骤三:创建实体类和映射关系文件
创建com.souvc.entity包,并在包下创建资费实体类和映射关系文件,其中实体类Cost代码如下
package com.souvc.entity; import java.util.Date; /**
* 资费实体类
*/
public class Cost {
private Integer id;// 主键
private String name;// 资费名称
private Integer baseDuration;// 在线时长
private Double baseCost;// 基本费用
private Double unitCost;// 单位费用
private String status;// 状态
private String descr;// 资费说明
private Date createTime;// 创建日期
private Date startTime;// 启用日期
private String costType;// 资费类型
public Integer getId() {
return id;
}
public void setId(Integer id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getBaseDuration() {
return baseDuration;
}
public void setBaseDuration(Integer baseDuration) {
this.baseDuration = baseDuration;
}
public Double getBaseCost() {
return baseCost;
}
public void setBaseCost(Double baseCost) {
this.baseCost = baseCost;
}
public Double getUnitCost() {
return unitCost;
}
public void setUnitCost(Double unitCost) {
this.unitCost = unitCost;
}
public String getStatus() {
return status;
}
public void setStatus(String status) {
this.status = status;
}
public String getDescr() {
return descr;
}
public void setDescr(String descr) {
this.descr = descr;
}
public Date getCreateTime() {
return createTime;
}
public Date getStartTime() {
return startTime;
}
public void setStartTime(Date startTime) {
this.startTime = startTime;
}
public void setCreateTime(Date createTime) {
this.createTime = createTime;
}
public String getCostType() {
return costType;
}
public void setCostType(String costType) {
this.costType = costType;
}
}
映射关系文件Cost.hbm.xml代码如下
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE hibernate-mapping PUBLIC
"-//Hibernate/Hibernate Mapping DTD 3.0//EN"
"http://hibernate.sourceforge.net/hibernate-mapping-3.0.dtd">
<hibernate-mapping>
<!-- 配置实体类和表的关系 -->
<class name="com.souvc.entity.Cost" table="cost">
<!-- 配置主键属性和字段的关系 -->
<id name="id" type="java.lang.Integer" column="id">
<!-- 用来指明主键的生成方式 -->
<!-- <generator class="sequence"> <param name="sequence">emp_seq</param>
</generator> -->
<generator class="native">
</generator>
</id> <!-- 配置实体类中属性与表中字段的关系 -->
<property name="name" type="string" column="name" />
<property name="baseDuration" type="integer" column="base_duration" />
<property name="baseCost" type="double" column="base_cost" />
<property name="unitCost" type="double" column="unit_cost" />
<property name="status" type="string" column="status" />
<property name="descr" type="string" column="descr" />
<property name="createTime" type="date" column="creatime" />
<property name="startTime" type="date" column="startime" />
<property name="costType" type="string" column="cost_type" /> </class>
</hibernate-mapping>
在applicationContext.xml中注册映射关系文件,代码如下
<property name="mappingResources">
<list>
<value>com/souvc/entity/Cost.hbm.xml</value>
</list>
</property>
步骤四:
创建包com.souvc.dao,并在包下创建资费DAO接口,声明增、删、改、查的方法,代码如下
package com.souvc.dao;
import java.util.List; import com.souvc.entity.Cost; public interface ICostDao {
List<Cost> findAll();
Cost findById(int id);
void save(Cost cost);
void update(Cost cost);
void delete(int id);
}
创建DAO实现类CostDaoImpl,继承于HibernateDaoSupport,实现接口ICostDao。代码如下
package com.souvc.dao;
import java.util.List; import javax.annotation.Resource; import org.hibernate.SessionFactory;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
import org.springframework.stereotype.Repository; import com.souvc.entity.Cost;
@SuppressWarnings("unchecked")
@Repository
public class CostDaoImpl
extends HibernateDaoSupport implements ICostDao { @Resource
public void setSF(SessionFactory sf) {
super.setSessionFactory(sf);
} @Override
public List<Cost> findAll() {
String hql = "from Cost";
return getHibernateTemplate().find(hql);
}
@Override
public Cost findById(int id) {
return (Cost) getHibernateTemplate().get(Cost.class, id);
}
@Override
public void save(Cost cost) {
getHibernateTemplate().save(cost);
}
@Override
public void update(Cost cost) {
getHibernateTemplate().update(cost);
}
@Override
public void delete(int id) {
Cost c = new Cost();
c.setId(id);
getHibernateTemplate().delete(c);
}
}
步骤五:测试
在com.souvc.dao包下,创建JUNIT测试类TestDao,分别写出资费的增、删、改
查测试方法,并执行这些方法进行测试。代码如下
package com.souvc.dao; import java.util.List; import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext; import com.souvc.entity.Cost;
/**
*
* 类名: TestDao
* 描述: 测试类
* 开发人员: souvc
* 创建时间: 2015-9-6 下午1:01:44
* 发布版本:V3.0
*/
public class TestDao { private String conf = "applicationContext.xml"; /**
* 方法名:test1
* 详述:查询所有
* 开发人员:souvc
* 创建时间:2015-9-6 下午12:59:30
* 说明参数含义
* 说明返回值含义
* 说明发生此异常的条件
*/
@Test
public void test1() {
ApplicationContext ctx = new ClassPathXmlApplicationContext(conf);
ICostDao dao = (ICostDao) ctx.getBean("costDaoImpl");
List<Cost> list = dao.findAll();
for (Cost c : list) {
System.out.println(c.getId() + " " + c.getName());
}
} /**
* 方法名:test2
* 详述:通过id查询
* 开发人员:souvc
* 创建时间:2015-9-6 下午1:00:07
* 说明参数含义
* 说明返回值含义
* 说明发生此异常的条件
*/
@Test
public void test2() {
ApplicationContext ctx = new ClassPathXmlApplicationContext(conf);
ICostDao dao = (ICostDao) ctx.getBean("costDaoImpl");
Cost c = dao.findById(1);
System.out.println(c.getId() + " " + c.getName());
} /**
* 方法名:test3
* 详述:新增
* 开发人员:souvc
* 创建时间:2015-9-6 下午1:00:32
* 说明参数含义
* 说明返回值含义
* 说明发生此异常的条件
*/
@Test
public void test3() {
ApplicationContext ctx = new ClassPathXmlApplicationContext(conf);
ICostDao dao = (ICostDao) ctx.getBean("costDaoImpl");
Cost c = new Cost();
c.setName("aaa");
c.setBaseDuration(20);
c.setBaseCost(2.0);
c.setUnitCost(0.2);
c.setCostType("1");
c.setStatus("0");
dao.save(c);
} /**
* 方法名:test4
* 详述:更新
* 开发人员:souvc
* 创建时间:2015-9-6 下午1:00:59
* 说明参数含义
* 说明返回值含义
* 说明发生此异常的条件
*/
@Test
public void test4() {
ApplicationContext ctx = new ClassPathXmlApplicationContext(conf);
ICostDao dao = (ICostDao) ctx.getBean("costDaoImpl");
Cost c = dao.findById(1);
c.setName("bbb");
dao.update(c);
} /**
* 方法名:test5
* 详述:删除
* 开发人员:liuhf
* 创建时间:2015-9-6 下午1:01:19
* 说明参数含义
* 说明返回值含义
* 说明发生此异常的条件
*/
@Test
public void test5() {
ApplicationContext ctx = new ClassPathXmlApplicationContext(conf);
ICostDao dao = (ICostDao) ctx.getBean("costDaoImpl");
dao.delete(1);
}
}
建表语句:
CREATE TABLE `cost` (
`id` int(10) NOT NULL auto_increment,
`name` varchar(50) default NULL,
`base_duration` int(11) default NULL,
`unit_cost` double(10,0) default NULL,
`status` varchar(10) default NULL,
`descr` varchar(20) default NULL,
`creatime` date default NULL,
`startime` date default NULL,
`cost_type` varchar(10) default NULL,
`base_cost` double(10,0) default NULL,
PRIMARY KEY (`id`)
) ENGINE=InnoDB AUTO_INCREMENT=1 DEFAULT CHARSET=utf8;
以上的源码如下:
http://yunpan.cn/cmvceCwSyjbXi 访问密码 3930