标签：
1. UserServiceTest.java:
package com.bjsxt.service;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.bjsxt.model.User;
//Dependency Injection
//Inverse of Control
public class UserServiceTest {
@Test
public void testAdd() throws Exception {
ClassPathXmlApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml");
UserService service = (UserService)ctx.getBean("userService");
System.out.println(service.getClass());
User user=new User();
user.setName("zhangsdddn");
service.add(user);
ctx.destroy();
}
}
2. src下 beas.xml: 注意tx的引入, properties->XML Catalog, 引入spring-tx-2.5.xsd
<?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:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="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/aop
http://www.springframework.org/schema/aop/spring-aop-2.5.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
<context:annotation-config />
<context:component-scan base-package="com.bjsxt" />
<!--
<bean id="dataSource"
class="org.apache.commons.dbcp.BasicDataSource"
destroy-method="close">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://localhost:3306/spring" />
<property name="username" value="root" />
<property name="password" value="bjsxt" />
</bean>
-->
<bean
class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="locations">
<value>classpath:jdbc.properties</value>
</property>
</bean>
<bean id="dataSource" destroy-method="close"
class="org.apache.commons.dbcp.BasicDataSource">
<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>
<bean id="sessionFactory"
class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="annotatedClasses">
<list>
<value>com.bjsxt.model.User</value>
<value>com.bjsxt.model.Log</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">
org.hibernate.dialect.MySQLDialect
</prop>
<prop key="hibernate.show_sql">true</prop>
</props>
</property>
</bean>
<bean id="txManager"
class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory" />
</bean>
<tx:annotation-driven transaction-manager="txManager"/>
</beans>
3. src下jdbc.properties
jdbc.driverClassName=com.mysql.jdbc.Driver jdbc.url=jdbc:mysql://localhost:3306/spring jdbc.username=root jdbc.password=linda0213
4. UserService.java:
新增一个业务逻辑log, 如果加入一个user出错, 那么log也要保证回滚, 所以要通过beans.xml和UserService.java里的add方法上加入@Transactional, 来进行统一事务管理
Transactional有个属性propagation, 是个Enum, 默认值是REQUIRED,
@Transactional(propagation=propagation.REQUIRED)
package com.bjsxt.service;
import javax.annotation.Resource;
import org.springframework.stereotype.Component;
import org.springframework.transaction.annotation.Propagation;
import org.springframework.transaction.annotation.Transactional;
import com.bjsxt.dao.LogDAO;
import com.bjsxt.dao.UserDAO;
import com.bjsxt.model.Log;
import com.bjsxt.model.User;
@Component("userService")
public class UserService {
private UserDAO userDAO;
private LogDAO logDAO;
public void init() {
System.out.println("init");
}
public User getUser(int id) {
return null;
}
@Transactional
public void add(User user) {
userDAO.save(user);
Log log = new Log();
log.setMsg("a user saved!");
logDAO.save(log);
}
public UserDAO getUserDAO() {
return userDAO;
}
@Resource(name="u")
public void setUserDAO( UserDAO userDAO) {
this.userDAO = userDAO;
}
public LogDAO getLogDAO() {
return logDAO;
}
@Resource
public void setLogDAO(LogDAO logDAO) {
this.logDAO = logDAO;
}
public void destroy() {
System.out.println("destroy");
}
}
UserDAOImpl.java:
去掉save里的事务处理
package com.bjsxt.dao.impl;
import java.sql.SQLException;
import javax.annotation.Resource;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.stereotype.Component;
import com.bjsxt.dao.UserDAO;
import com.bjsxt.model.User;
@Component("u")
public class UserDAOImpl implements UserDAO {
private SessionFactory sessionFactory;
public SessionFactory getSessionFactory() {
return sessionFactory;
}
@Resource
public void setSessionFactory(SessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
}
public void save(User user) {
Session s = sessionFactory.getCurrentSession();
s.save(user);
//throw new RuntimeException("exeption!");
}
}
LogDAOImpl.java:
package com.bjsxt.dao.impl;
import javax.annotation.Resource;
import org.hibernate.Session;
import org.hibernate.SessionFactory;
import org.springframework.stereotype.Component;
import com.bjsxt.dao.LogDAO;
import com.bjsxt.model.Log;
@Component("logDAO")
public class LogDAOImpl implements LogDAO {
private SessionFactory sessionFactory;
public SessionFactory getSessionFactory() {
return sessionFactory;
}
@Resource
public void setSessionFactory(SessionFactory sessionFactory) {
this.sessionFactory = sessionFactory;
}
public void save(Log log) {
Session s = sessionFactory.getCurrentSession();
s.save(log);
//throw new RuntimeException("error!");
}
}
UserDAO.java:
package com.bjsxt.dao;
import com.bjsxt.model.User;
public interface UserDAO {
public void save(User user);
}
LogDAO.java:
package com.bjsxt.dao;
import com.bjsxt.model.User;
public interface UserDAO {
public void save(User user);
}
User.java
package com.bjsxt.model;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
@Entity
public class User {
private int id;
private String name;
@Id
@GeneratedValue
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
Log.java:
package com.bjsxt.model;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.Id;
@Entity
public class User {
private int id;
private String name;
@Id
@GeneratedValue
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
sping 对 hibernate进行事务管理--Annotation
标签：
原文地址：http://www.cnblogs.com/wujixing/p/5473437.html
