public class UserServiceTest { public static void main(String[] args) { ApplicationContext ac = new ClassPathXmlApplicationContext("applicationContext.xml"); UserService service = (UserService)ac.getBean("userService"); User u = new User(); u.setName("haha success!!"); service.add(u); } }
二。application.xml配置
<?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.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop.xsd"> <!-- 配置自动装配 AutowiredAnnotationBeanPostProcessor等接口,实现注入等功能 --> <context:annotation-config/> <!-- 配置扫描包路径,将包下所有组件实例化 --> <context:component-scan base-package="com.job"/> <!-- 声明一个处理实现类 --> <bean id="userDAOImpl" class="com.job.dao.UserDAOImpl"> <!-- 将sessionFactory注入到处理实理类中 --> <property name="sessionFactory" ref="sessionFactory"></property> </bean> <!-- 在spring容器中,创建数据库连接Bean --> <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/test?useUnicode=true&characterEncoding=utf8"/> <property name="username" value="root"/> <property name="password" value="admin"/> </bean> <!-- 创建hibernate的sessionFactory --> <bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean"> <!-- 将spring容器中存在的数据库连接Bean,配置到sessionFactory中 --> <property name="dataSource" ref="DataSource"/> <!-- 配置hibernate映射实体对象到表的文件(一) --> <property name="packagesToScan"> <list> <value>com.job.model</value> </list> </property> <!-- 配置hibernate映射实体对象到表的文件(二) <property name="annotatedClasses"> <list> <value>com.job.model.User</value> <value>com.job.model.Log</value> </list> </property> --> <!-- 配置hibernate属性,方言,显示sql,是否创建数据表 --> <property name="hibernateProperties"> <props> <prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop> <prop key="hibernate.show_sql">true</prop> <prop key="hibernate.hbm2ddl.auto">update</prop> </props> </property> </bean> <!-- 配置事务,注意xmlns:tx引入 --> <tx:annotation-driven transaction-manager="transactionManager"/> <bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory"/> </bean> </beans>
1.导入对应的 xmlns:tx标签
2.运用hibernate4的sessionFactory和transaction
三。增加事务及注入处理逻辑
@Component public class UserService { private UserDAO userDAO; private LogDAO logDAO; @Transactional public void add(User u){ this.userDAO.save(u); Log log = new Log(); log.setMessage("a object saved!"); this.logDAO.save(log); } @Resource(name="userDAOImpl") public void setUserDAO(UserDAO userDAO) { this.userDAO = userDAO; } @Resource(name="logDAOImpl") public void setLogDAO(LogDAO logDAO) { this.logDAO = logDAO; } public UserDAO getUserDAO() { return userDAO; } public LogDAO getLogDAO() { return logDAO; } }
xml事务配置方式:
<!-- 配置事务,注意xmlns:tx引入 --> <!--<tx:annotation-driven transaction-manager="transactionManager"/>--> <bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager"> <property name="sessionFactory" ref="sessionFactory"/> </bean> <!-- 声明一个类中哪些方法增加建议--> <aop:config> <!-- public * com.job.service..*.*(..)表示方法:公共,任何返回值,com.job.service包,任何类,任何方法,任何参数 --> <aop:pointcut id="fooServiceOperation" expression="execution(public * com.job.service..*.*(..))"/> <aop:advisor advice-ref="txAdvice" pointcut-ref="fooServiceOperation"/> </aop:config> <!-- 声明一个aop建议 ,注入事务管理--> <tx:advice id="txAdvice" transaction-manager="transactionManager"> <!-- 事务属性--> <tx:attributes> <!-- 所有以get开头的方法都设置成 read-only 方式,sping会进行优化--> <tx:method name="get*" read-only="true"/> <!-- 其它的方法设置成默认REQUIRED,即调用方法之前有事务,则运用之前的事务,否则新建一个事务 --> <tx:method name="add*"/> </tx:attributes> </tx:advice>
@Transactional增加事务,xml方式配置都配置到application.xml里
@Resource注入组件
四。服务组件
用户服务
public interface UserDAO { public void save(User u); } @Component public class UserDAOImpl implements UserDAO{ private SessionFactory sessionFactory; public void save(User u) { Session s = sessionFactory.getCurrentSession(); s.save(u); throw new RuntimeException("error!!!!!"); } public SessionFactory getSessionFactory() { return sessionFactory; } @Resource(name="sessionFactory") public void setSessionFactory(SessionFactory sessionFactory) { this.sessionFactory = sessionFactory; } }
抛出异常作测试,注入sessionFactory.
public interface LogDAO { public void save(Log log); } @Component public class LogDAOImpl implements LogDAO{ private SessionFactory sessionFactory; public void save(Log log){ Session s = sessionFactory.getCurrentSession(); s.save(log); } public SessionFactory getSessionFactory() { return sessionFactory; } @Resource(name="sessionFactory") public void setSessionFactory(SessionFactory sessionFactory) { this.sessionFactory = sessionFactory; } }
五。实体类
@Entity @Table(name="Users") public class User { private int id; private String name; public String getName() { return name; } public void setName(String name) { this.name = name; } @Id @GeneratedValue @Column(name="USER_ID") public int getId() { return id; } public void setId(int id) { this.id = id; } } @Entity @Table(name="log") public class Log { private int id; private String message; public String getMessage() { return message; } public void setMessage(String message) { this.message = message; } @Id @GeneratedValue public int getId() { return id; } public void setId(int id) { this.id = id; } }
@Entity 声明实体类
@Table映射表设置
@Column设置属性对映表中的列
六。测试结果
数据报错则回滚!