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Spring管理 hibernate 事务配置的五种方式

2012-05-04 17:34 671 查看
Spring配置文件中关于事务配置总是由三个组成部分,DataSource、TransactionManager和代理机制这三部分,无论是那种配置方法,一般变化的只是代理机制这块!

首先我创建了两个类,一个接口一个实现:

Java代码



package com.dao;

public interface UserDao {

public void getUser();

}

实现:

Java代码



package com.dao.impl;

import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import com.dao.UserDao;

public class UserDaoImpl extends HibernateDaoSupport implements UserDao {

public void getUser(){

}

}

第一种:每个Bean都有一个代理:

Xml代码



<?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: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-2.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">

<!-- 数据源 -->

<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://192.168.0.244:3306/test?useUnicode=true&characterEncoding=UTF-8" />

<property name="username" value="root" />

<property name="password" value="root" />

<!-- 连接池启动时的初始值 -->

<property name="initialSize" value="10" />

<!-- 连接池的最大值 -->

<property name="maxActive" value="10" />

<!-- 最大空闲值.当经过一个高峰时间后,连接池可以慢慢将已经用不到的连接慢慢释放一部分,一直减少到maxIdle为止 -->

<property name="maxIdle" value="20" />

<!-- 最小空闲值.当空闲的连接数少于阀值时,连接池就会预申请去一些连接,以免洪峰来时来不及申请 -->

<property name="minIdle" value="10" />

<property name="defaultAutoCommit" value="true" />

</bean>

<!-- 会话工厂 -->

<bean id="sessionFactory"

class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">

<property name="dataSource" ref="dataSource" />

<property name="mappingLocations">

<list>

<value>classpath:/com/nms/entity/**/*.hbm.xml</value>

</list>

</property>

<property name="hibernateProperties">

<props>

<prop key="hibernate.dialect">

org.hibernate.dialect.MySQL5Dialect

</prop>

<prop key="hibernate.show_sql">true</prop>

<prop key="hibernate.format_sql">true</prop>

</props>

</property>

</bean>

<!-- 定义事务管理器 -->

<bean id="transactionManager"

class="org.springframework.orm.hibernate3.HibernateTransactionManager">

<property name="sessionFactory" ref="sessionFactory" />

</bean>

<!-- 配置服务层 -->

<bean id="userDaoAgency" class="com.dao.impl.UserDaoImpl">

<property name="sessionFactory" ref="sessionFactory" />

</bean>

<bean id="userDao"

class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">

<!-- 配置事务管理器 -->

<property name="transactionManager" ref="transactionManager" />

<property name="target" ref="userDaoAgency" />

<property name="proxyInterfaces" value="com.dao.UserDao" />

<!-- 配置事务属性 -->

<property name="transactionAttributes">

<props>

<prop key="*">PROPAGATION_REQUIRED</prop>

</props>

</property>

</bean>

</beans>

第二种:所有Bean共享一个代理:

Java代码



<?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: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-2.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">

<!-- 数据源 -->

<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://192.168.0.244:3306/test?useUnicode=true&characterEncoding=UTF-8" />

<property name="username" value="root" />

<property name="password" value="root" />

<!-- 连接池启动时的初始值 -->

<property name="initialSize" value="10" />

<!-- 连接池的最大值 -->

<property name="maxActive" value="10" />

<!-- 最大空闲值.当经过一个高峰时间后,连接池可以慢慢将已经用不到的连接慢慢释放一部分,一直减少到maxIdle为止 -->

<property name="maxIdle" value="20" />

<!-- 最小空闲值.当空闲的连接数少于阀值时,连接池就会预申请去一些连接,以免洪峰来时来不及申请 -->

<property name="minIdle" value="10" />

<property name="defaultAutoCommit" value="true" />

</bean>

<!-- 会话工厂 -->

<bean id="sessionFactory"

class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">

<property name="dataSource" ref="dataSource" />

<property name="mappingLocations">

<list>

<value>classpath:/com/nms/entity/**/*.hbm.xml</value>

</list>

</property>

<property name="hibernateProperties">

<props>

<prop key="hibernate.dialect">

org.hibernate.dialect.MySQL5Dialect

</prop>

<prop key="hibernate.show_sql">true</prop>

<prop key="hibernate.format_sql">true</prop>

</props>

</property>

</bean>

<!-- 定义事务管理器 -->

<bean id="transactionManager"

class="org.springframework.orm.hibernate3.HibernateTransactionManager">

<property name="sessionFactory" ref="sessionFactory" />

</bean>

<!-- 定义事务 -->

<bean id="base"

class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean"

lazy-init="true" abstract="true">

<!-- 配置事务管理器 -->

<property name="transactionManager" ref="transactionManager" />

<!-- 配置事务属性 -->

<property name="transactionAttributes">

<props>

<prop key="*">PROPAGATION_REQUIRED</prop>

</props>

</property>

</bean>

<!-- 配置服务层 -->

<bean id="userDao"

class="com.dao.impl.UserDaoImpl">

<property name="sessionFactory" ref="sessionFactory" />

</bean>

<!-- 代理对象 -->

<bean id="userDaoAgency" parent="base">

<property name="target" ref="userDao" />

</bean>

</beans>

第三种:拦截器:

Java代码



<?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: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-2.0.xsd http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">

<!-- 数据源 -->

<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://192.168.0.244:3306/test?useUnicode=true&characterEncoding=UTF-8" />

<property name="username" value="root" />

<property name="password" value="root" />

<!-- 连接池启动时的初始值 -->

<property name="initialSize" value="10" />

<!-- 连接池的最大值 -->

<property name="maxActive" value="10" />

<!-- 最大空闲值.当经过一个高峰时间后,连接池可以慢慢将已经用不到的连接慢慢释放一部分,一直减少到maxIdle为止 -->

<property name="maxIdle" value="20" />

<!-- 最小空闲值.当空闲的连接数少于阀值时,连接池就会预申请去一些连接,以免洪峰来时来不及申请 -->

<property name="minIdle" value="10" />

<property name="defaultAutoCommit" value="true" />

</bean>

<!-- 会话工厂 -->

<bean id="sessionFactory"

class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">

<property name="dataSource" ref="dataSource" />

<property name="mappingLocations">

<list>

<value>classpath:/com/nms/entity/**/*.hbm.xml</value>

</list>

</property>

<property name="hibernateProperties">

<props>

<prop key="hibernate.dialect">

org.hibernate.dialect.MySQL5Dialect

</prop>

<prop key="hibernate.show_sql">true</prop>

<prop key="hibernate.format_sql">true</prop>

</props>

</property>

</bean>

<!-- 定义事务管理器(声明式的事务) -->

<bean id="transactionManager"

class="org.springframework.orm.hibernate3.HibernateTransactionManager">

<property name="sessionFactory" ref="sessionFactory" />

</bean>

<!-- 定义事务 -->

<bean id="transactionInterceptor"

class="org.springframework.transaction.interceptor.TransactionInterceptor">

<property name="transactionManager" ref="transactionManager" />

<!-- 配置事务属性 -->

<property name="transactionAttributes">

<props>

<prop key="*">PROPAGATION_REQUIRED</prop>

</props>

</property>

</bean>

<bean class="org.springframework.aop.framework.autoproxy.BeanNameAutoProxyCreator">

<property name="beanNames">

<list>

<value>*DaoImpl</value>

</list>

</property>

<property name="interceptorNames">

<list>

<value>transactionInterceptor</value>

</list>

</property>

</bean>

<!-- 配置服务层 -->

<bean id="userDaoAgency" class="com.dao.impl.UserDaoImpl">

<property name="sessionFactory" ref="sessionFactory" />

</bean>

</beans>

第四种:使用tx标签配置的拦截器:

Java代码



<?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">

<!-- 数据源 -->

<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://192.168.0.244:3306/test?useUnicode=true&characterEncoding=UTF-8" />

<property name="username" value="root" />

<property name="password" value="root" />

<!-- 连接池启动时的初始值 -->

<property name="initialSize" value="10" />

<!-- 连接池的最大值 -->

<property name="maxActive" value="10" />

<!-- 最大空闲值.当经过一个高峰时间后,连接池可以慢慢将已经用不到的连接慢慢释放一部分,一直减少到maxIdle为止 -->

<property name="maxIdle" value="20" />

<!-- 最小空闲值.当空闲的连接数少于阀值时,连接池就会预申请去一些连接,以免洪峰来时来不及申请 -->

<property name="minIdle" value="10" />

<property name="defaultAutoCommit" value="true" />

</bean>

<!-- 会话工厂 -->

<bean id="sessionFactory"

class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">

<property name="dataSource" ref="dataSource" />

<property name="mappingLocations">

<list>

<value>classpath:/com/nms/entity/**/*.hbm.xml</value>

</list>

</property>

<property name="hibernateProperties">

<props>

<prop key="hibernate.dialect">

org.hibernate.dialect.MySQL5Dialect

</prop>

<prop key="hibernate.show_sql">true</prop>

<prop key="hibernate.format_sql">true</prop>

</props>

</property>

</bean>

<context:annotation-config />

<context:component-scan base-package="com.dao" />

<!-- 定义事务管理器 -->

<bean id="transactionManager"

class="org.springframework.orm.hibernate3.HibernateTransactionManager">

<property name="sessionFactory" ref="sessionFactory" />

</bean>

<!-- 定义事务 -->

<tx:advice id="txAdvice" transaction-manager="transactionManager">

<tx:attributes>

<tx:method name="*" propagation="REQUIRED" />

</tx:attributes>

</tx:advice>

<!-- 定义切面 -->

<aop:config>

<aop:pointcut id="interceptorPointCuts" expression="execution(* com.dao.*.*(..))" />

<aop:advisor advice-ref="txAdvice" pointcut-ref="interceptorPointCuts" />

</aop:config>

</beans>

第五种:注解:

Java代码



<?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">

<!-- 数据源 -->

<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://192.168.0.244:3306/test?useUnicode=true&characterEncoding=UTF-8" />

<property name="username" value="root" />

<property name="password" value="root" />

<!-- 连接池启动时的初始值 -->

<property name="initialSize" value="10" />

<!-- 连接池的最大值 -->

<property name="maxActive" value="10" />

<!-- 最大空闲值.当经过一个高峰时间后,连接池可以慢慢将已经用不到的连接慢慢释放一部分,一直减少到maxIdle为止 -->

<property name="maxIdle" value="20" />

<!-- 最小空闲值.当空闲的连接数少于阀值时,连接池就会预申请去一些连接,以免洪峰来时来不及申请 -->

<property name="minIdle" value="10" />

<property name="defaultAutoCommit" value="true" />

</bean>

<!-- 会话工厂 -->

<bean id="sessionFactory"

class="org.springframework.orm.hibernate3.LocalSessionFactoryBean">

<property name="dataSource" ref="dataSource" />

<property name="mappingLocations">

<list>

<value>classpath:/com/nms/entity/**/*.hbm.xml</value>

</list>

</property>

<property name="hibernateProperties">

<props>

<prop key="hibernate.dialect">

org.hibernate.dialect.MySQL5Dialect

</prop>

<prop key="hibernate.show_sql">true</prop>

<prop key="hibernate.format_sql">true</prop>

</props>

</property>

</bean>

<context:annotation-config />

<!-- 使用注解的包路径 -->

<context:component-scan base-package="com.dao" />

<!-- 支持 @Transactional 标记 -->

<tx:annotation-driven transaction-manager="transactionManager"/>

<!-- 定义事务管理器 -->

<bean id="transactionManager"

class="org.springframework.orm.hibernate3.HibernateTransactionManager">

<property name="sessionFactory" ref="sessionFactory" />

</bean>

</beans>

如果使用了注解,那么实现类应该这样写:

Java代码



package com.dao.impl;

import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import org.springframework.stereotype.Component;

import org.springframework.transaction.annotation.Transactional;

import com.dao.UserDao;

@Transactional

@Component("userDaoAgency")

public class UserDaoImpl extends HibernateDaoSupport implements UserDao {

/**

* 为方法增加事务处理特性

*/

@Transactional(readOnly=true)

public void getUser(){

}

}

这样每个方法都能自己定义自己的事务处理!

转自:http://www.iteye.com/topic/1123347

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