下面介紹一下hibernate與spring的集成,這兩個框架的集成關鍵在於 applicationContext.xml文件的配置，其實很簡單的，但需要注意的是，導入包 時一定選擇導入到webroot/web-inf/lib目錄中，而且hibernate一般要在spring 之前導入，因為集成時要用到sessionFactory類,
一、初始化工作:新建一個項目,如(ssh),在此項目中導入對hibernate的支持 ,新建一個表sstest表，有字段id,username,password,id為主健和自動增1
二、對新建的數據表進行hibernate進行映射,打開myhibernate視圖，右擊你 sstest表->選hibernate revers engineering選項，然後把Sstest.hbm.xml 文件映射到hibernateDao包中，同時選中工具 hibernate mapping file..., java data object....., java data access object dao...選項，先中這幾個 文件就可以產生下列幾個.java文件:BaseHibernateDAO. ,HibernateSessionFactory ,IBaseHibernateDAO, Sstest,SstestDAO,最後你對 你的代碼進行測試，測試成功，進行下一步
三、在項目中導入對spring的支持，在導入項目後不但要自動產生 applicationContext.xml,而且在這個文件裡會出現下面的內容：
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <property name="configLocation" value="classpath:hibernate.cfg.xml"> </property> </bean>
這就是為什麼要先要導入hibernate的原因
四、若你對spring的ioc比較熟，你可以直接進入下一步，如果不是很了解， 那麼你可以寫一個比較簡單的例子測試一下看是否成功，必竟框架和在一起，所 以小心點好，不然在以後出了有問題不好找
五、進入myeclipse hibernate視圖下，在新的包（如springDao）中重新對 sstest表進行映射，這次映射要注意的就是：打開hibernate reverse engineering對話框中復選按鈕java data access object(dao)(hibernate 3 only)下，dao type 不是選basic dao選項，而是選spring dao選項，當你映射 成功後，就會出現Sstest.java, SstestDAO.java, Sstest.hbm.xml幾個文件， 你可以寫一個類進行測試，如：
springdaotest.java
package org.test;
import org.springframework.context.ApplicationContext;
import
org.springframework.context.support.ClassPathXmlApplicationContext;
import springDao.Sstest;
import springDao.SstestDAO;
public class SpringDaoTest {
public static void main(String a[]){
ApplicationContext cont = new ClassPathXmlApplicationContext
("applicationContext.xml");
SstestDAO s = (SstestDAO) cont.getBean("SstestDAO");
SstestDAO s = (SstestDAO) cont.getBean("SstestDAOProxy");
Sstest st = new Sstest();
st.setUsername("spring");
st.setPassword("spring");
s.save(st);
}
}
六、由於映射了兩次，所以你要在hibernate.cfg.xml文件中，把原來映射的 文件注解掉：
<mapping resource="hibernateDao/Sstest.hbm.xml" />
因為現在已有一行這樣的代碼：
<mapping resource="springDao/Sstest.hbm.xml" />
七、實現hibernate spring 代理，加上下面的代碼即可：
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager" > <property name="sessionFactory"> <ref local="sessionFactory"/> </property> </bean> <bean id="SstestDAOProxy" class="org.springframework.transaction.interceptor.TransactionProxyFac toryBean"> <property name="proxyTargetClass"> <value>true</value> </property> <property name="transactionManager"> <ref bean="transactionManager"/> </property> <property name="target"> <ref local="SstestDAO"/> </property> <property name="transactionAttributes"> <props> <prop key="*">PROPAGATION_REQUIRED</prop> </props> </property> </bean>
在進行測試，測試時，還是用原來的類，只需把SstestDAO s = (SstestDAO) cont.getBean("SstestDAO");變成
SstestDAO s = (SstestDAO) cont.getBean("SstestDAOProxy");這次的 bean是用的代碼類實現
下面是完整的代碼：
在這個實例中hibernate包中的文件BaseHibernateDAO. ,HibernateSessionFactory ,IBaseHibernateDAO, Sstest,SstestDAO, Sstest.hbm.xml ，和在一個簡單的struts，hibernate例子以及 struts,hibernate集成中的文件是一樣的，代碼一樣，下面是一些其它代碼：
applicationContext.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-2.0.xsd"> <bean id="sessionFactory" class="org.springframework.orm.hibernate3.LocalSessionFactoryBean"> <property name="configLocation" value="classpath:hibernate.cfg.xml"> </property> </bean> <!-- spring dao --> <bean id="SstestDAO" class="springDao.SstestDAO"> <property name="sessionFactory"> <ref bean="sessionFactory"/> </property> </bean> <!-- hibernate 3 事務代理 --> <bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager" > <property name="sessionFactory"> <ref local="sessionFactory"/> </property> </bean> <bean id="SstestDAOProxy" class="org.springframework.transaction.interceptor.TransactionProxyFac toryBean"> <property name="proxyTargetClass"> <value>true</value> </property> <property name="transactionManager"> <ref bean="transactionManager"/> </property> <property name="target"> <ref local="SstestDAO"/> </property> <property name="transactionAttributes"> <props> <prop key="*">PROPAGATION_REQUIRED</prop> </props> </property> </bean> </beans>
測試類：SpringDaoTest.java
package org.test;
import org.springframework.context.ApplicationContext;
import
org.springframework.context.support.ClassPathXmlApplicationContext;
import springDao.Sstest;
import springDao.SstestDAO;
public class SpringDaoTest {
public static void main(String a[]){
ApplicationContext cont = new ClassPathXmlApplicationContext
("applicationContext.xml");
//SstestDAO s = (SstestDAO) cont.getBean("SstestDAO");
//代理類
SstestDAO s = (SstestDAO) cont.getBean("SstestDAOProxy");
Sstest st = new Sstest();
st.setUsername("spring");
st.setPassword("spring");
s.save(st);
}
}
Sstest.hbm.xml
<?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"> <!-- Mapping file autogenerated by MyEclipse Persistence Tools --> <hibernate-mapping> <class name="springDao.Sstest" table="sstest" schema="dbo" catalog="manager"> <id name="id" type="java.lang.Integer"> <column name="id" /> <generator class="increment" /> </id> <property name="username" type="java.lang.String"> <column name="username" length="10" /> </property> <property name="password" type="java.lang.String"> <column name="password" length="20" /> </property> </class> </hibernate-mapping>
SstestDAO.java
package springDao;
import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.LockMode;
import org.springframework.context.ApplicationContext;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
public class SstestDAO extends HibernateDaoSupport {
private static final Log log = LogFactory.getLog(SstestDAO.class);
// property constants
public static final String USERNAME = "username";
public static final String PASSWORD = "password";
protected void initDao() {
// do nothing
}
public void save(Sstest transientInstance) {
log.debug("saving Sstest instance");
System.out.println("Ok");
try {
getHibernateTemplate().save(transientInstance);
log.debug("save successful");
System.out.print("save Ok");
} catch (RuntimeException re) {
log.error("save failed", re);
throw re;
}
}
public void delete(Sstest persistentInstance) {
log.debug("deleting Sstest instance");
try {
getHibernateTemplate().delete(persistentInstance);
log.debug("delete successful");
} catch (RuntimeException re) {
log.error("delete failed", re);
throw re;
}
}
public Sstest findById(java.lang.Integer id) {
log.debug("getting Sstest instance with id: " + id);
try {
Sstest instance = (Sstest) getHibernateTemplate().get(
"springDao.Sstest", id);
return instance;
} catch (RuntimeException re) {
log.error("get failed", re);
throw re;
}
}
public List findByExample(Sstest instance) {
log.debug("finding Sstest instance by example");
try {
List results = getHibernateTemplate().findByExample(instance);
log.debug("find by example successful, result size: "
+ results.size());
return results;
} catch (RuntimeException re) {
log.error("find by example failed", re);
throw re;
}
}
public List findByProperty(String propertyName, Object value) {
log.debug("finding Sstest instance with property: " + propertyName
+ ", value: " + value);
try {
String queryString = "from Sstest as model where model."
+ propertyName + "= ?";
return getHibernateTemplate().find(queryString, value);
} catch (RuntimeException re) {
log.error("find by property name failed", re);
throw re;
}
}
public List findByUsername(Object username) {
return findByProperty(USERNAME, username);
}
public List findByPassword(Object password) {
return findByProperty(PASSWORD, password);
}
public List findAll() {
log.debug("finding all Sstest instances");
try {
String queryString = "from Sstest";
return getHibernateTemplate().find(queryString);
} catch (RuntimeException re) {
log.error("find all failed", re);
throw re;
}
}
public Sstest merge(Sstest detachedInstance) {
log.debug("merging Sstest instance");
try {
Sstest result = (Sstest) getHibernateTemplate().merge(
detachedInstance);
log.debug("merge successful");
return result;
} catch (RuntimeException re) {
log.error("merge failed", re);
throw re;
}
}
public void attachDirty(Sstest instance) {
log.debug("attaching dirty Sstest instance");
try {
getHibernateTemplate().saveOrUpdate(instance);
log.debug("attach successful");
} catch (RuntimeException re) {
log.error("attach failed", re);
throw re;
}
}
public void attachClean(Sstest instance) {
log.debug("attaching clean Sstest instance");
try {
getHibernateTemplate().lock(instance, LockMode.NONE);
log.debug("attach successful");
} catch (RuntimeException re) {
log.error("attach failed", re);
throw re;
}
}
public static SstestDAO getFromApplicationContext(ApplicationContext
ctx) {
return (SstestDAO) ctx.getBean("SstestDAO");
}
}
Sstest.java
package springDao;
public class Sstest implements java.io.Serializable {
// Fields
private Integer id;
private String username;
private String password;
// Constructors
/** default constructor */
public Sstest() {
}
/** full constructor */
public Sstest(String username, String password) {
this.username = username;
this.password = password;
}
// Property accessors
public Integer getId() {
return this.id;
}
public void setId(Integer id) {
this.id = id;
}
public String getUsername() {
return this.username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return this.password;
}
public void setPassword(String password) {
this.password = password;
}
}
hibernate.cfg.xml
<?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"> <!-- Generated by MyEclipse Hibernate Tools. -- > <hibernate-configuration> <session-factory> <property name="connection.username">sa</property> <property name="connection.url"> jdbc:microsoft:sqlserver://127.0.0.1:1433;DatabaseName=manager </property> <property name="dialect"> org.hibernate.dialect.SQLServerDialect </property> <property name="myeclipse.connection.profile"> com.microsoft.jdbc.sqlserver.SQLServerDriver </property> <property name="connection.password">wq</property> <property name="connection.driver_class"> com.microsoft.jdbc.sqlserver.SQLServerDriver </property> <!-- <mapping resource="hibernateDao/Sstest.hbm.xml" /> -- > <!-- 使用springdao --> <mapping resource="springDao/Sstest.hbm.xml" /> </session-factory> </hibernate-configuration>
