spring+jotm 多数据源事务管理(二)hibernate

JOTM (Java Open Transaction Manager)是由ObjectWeb协会开发的功能完整的且资源开放的独立的事务管理器。

它提供了 JAVA 应用程序的事务支持，而且与 JTA（ JAVA 事务 API）兼容。您可以在JOTM home page 了解到更多的详细信息。

下载地址：http://forge.ow2.org/projects/jotm/

本文介绍如何在spring配置文件中加入jotm来实现多数据源事务控制。

使用hibernate关联jotm也很方便，先看一个没有使用jotm的例子：

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:p="http://www.springframework.org/schema/p"

xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"

xmlns:tx="http://www.springframework.org/schema/tx" xmlns:util="http://www.springframework.org/schema/util"

xmlns:jee="http://www.springframework.org/schema/jee"

xsi:schemaLocation="
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/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.5.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.5.xsd">

<bean id="dataSource1"

class="org.apache.commons.dbcp.BasicDataSource">

<property name="driverClassName">

<value>${datasource1.driver}</value>

</property>

<property name="url">

<value>${datasource1.url}</value>

</property>

<property name="username">

<value>${datasource1.username}</value>

</property>

<property name="password">

<value>${datasource1.password}</value>

</property>

<property name="initialSize">

<value>5</value>

</property>

<property name="maxActive">

<value>10</value>

</property>

</bean>

<bean id="dataSource2"

class="org.apache.commons.dbcp.BasicDataSource">

<property name="driverClassName">

<value>${datasource2.driver}</value>

</property>

<property name="url">

<value>${datasource2.url}</value>

</property>

<property name="username">

<value>${datasource2.username}</value>

</property>

<property name="password">

<value>${datasource2.password}</value>

</property>

<property name="initialSize">

<value>5</value>

</property>

<property name="maxActive">

<value>10</value>

</property>

</bean>

<bean id="sessionFactory1"

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

<property name="dataSource" ref="dataSource1" />

<property name="mappingLocations" value="${das.mapping.locations}" />

<property name="hibernateProperties">

<props>

<prop key="hibernate.dialect">

${hibernate.dialect}

</prop>

<prop key="hibernate.show_sql">

${hibernate.show_sql}

</prop>

<prop key="hibernate.use_sql_comments">

${hibernate.use_sql_comments}

</prop>

</props>

</property>

</bean>

<bean id="sessionFactory2"

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

<property name="dataSource" ref="dataSource2" />

<property name="mappingLocations" value="${history.mapping.locations}" />

<property name="hibernateProperties">

<props>

<prop key="hibernate.dialect">

${hibernate.dialect}

</prop>

<prop key="hibernate.show_sql">

${hibernate.show_sql}

</prop>

<prop key="hibernate.use_sql_comments">

${hibernate.use_sql_comments}

</prop>

</props>

</property>

</bean>

<bean id="transactionManager1"

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

<property name="sessionFactory" ref="sessionFactory1" />

</bean>

<bean id="transactionManager2"

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

<property name="sessionFactory" ref="sessionFactory2" />

</bean>

<aop:config proxy-target-class="true">

<aop:pointcut id="servicePoint1"

expression="execution (* com.xxx.function..service.*.*Service*.*(..))" />

<aop:advisor pointcut-ref="servicePoint1" id="txAdvisor1"

advice-ref="txAdvice1" />

</aop:config>

<aop:config proxy-target-class="true">

<aop:pointcut id="servicePoint2"

expression="execution (* com.xxx.function..service.*.*Service*.*(..))" />

<aop:advisor pointcut-ref="servicePoint2" id="txAdvisor2"

advice-ref="txAdvice2" />

</aop:config>

<tx:advice id="txAdvice1" transaction-manager="transactionManager1">

<tx:attributes>

<tx:method name="find*" read-only="true" />

<tx:method name="get*" read-only="true" />

<tx:method name="query*" read-only="true" />

<tx:method name="load*" read-only="true" />

<tx:method name="add*" propagation="REQUIRED" rollback-for="java.lang.Exception" />

<tx:method name="create*" propagation="REQUIRED"

rollback-for="java.lang.Exception" />

<tx:method name="save*" propagation="REQUIRED"

rollback-for="java.lang.Exception" />

<tx:method name="update*" propagation="REQUIRED"

rollback-for="java.lang.Exception" />

<tx:method name="modify*" propagation="REQUIRED"

rollback-for="java.lang.Exception" />

<tx:method name="delete*" propagation="REQUIRED"

rollback-for="java.lang.Exception" />

<tx:method name="remove*" propagation="REQUIRED"

rollback-for="java.lang.Exception" />

<tx:method name="apply*" propagation="REQUIRED"

rollback-for="java.lang.Exception" />

<tx:method name="handle*" propagation="REQUIRED"

rollback-for="java.lang.Exception" />

</tx:attributes>

</tx:advice>

<tx:advice id="txAdvice2" transaction-manager="transactionManager2">

<tx:attributes>

<tx:method name="find*" read-only="true" />

<tx:method name="get*" read-only="true" />

<tx:method name="query*" read-only="true" />

<tx:method name="load*" read-only="true" />

<tx:method name="add*" propagation="REQUIRED" rollback-for="java.lang.Exception" />

<tx:method name="create*" propagation="REQUIRED"

rollback-for="java.lang.Exception" />

<tx:method name="save*" propagation="REQUIRED"

rollback-for="java.lang.Exception" />

<tx:method name="update*" propagation="REQUIRED"

rollback-for="java.lang.Exception" />

<tx:method name="modify*" propagation="REQUIRED"

rollback-for="java.lang.Exception" />

<tx:method name="delete*" propagation="REQUIRED"

rollback-for="java.lang.Exception" />

<tx:method name="remove*" propagation="REQUIRED"

rollback-for="java.lang.Exception" />

<tx:method name="apply*" propagation="REQUIRED"

rollback-for="java.lang.Exception" />

<tx:method name="handle*" propagation="REQUIRED"

rollback-for="java.lang.Exception" />

<tx:method name="do*" propagation="REQUIRED"

rollback-for="java.lang.Exception" />

</tx:attributes>

</tx:advice>

</beans>

下面看加入jotm的例子：

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:p="http://www.springframework.org/schema/p"

xmlns:aop="http://www.springframework.org/schema/aop" xmlns:context="http://www.springframework.org/schema/context"

xmlns:tx="http://www.springframework.org/schema/tx" xmlns:util="http://www.springframework.org/schema/util"

xmlns:jee="http://www.springframework.org/schema/jee" xmlns:security="http://www.springframework.org/schema/security"

xsi:schemaLocation="
http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-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/context http://www.springframework.org/schema/context/spring-context-2.5.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util-2.5.xsd
http://www.springframework.org/schema/jee http://www.springframework.org/schema/jee/spring-jee-2.5.xsd
http://www.springframework.org/schema/security http://www.springframework.org/schema/security/spring-security-2.0.xsd"

default-lazy-init="true">

<bean id="jotm" class="org.springframework.transaction.jta.JotmFactoryBean" />

<bean id="transactionManager"

class="org.springframework.transaction.jta.JtaTransactionManager">

<property name="userTransaction" ref="jotm" />

</bean>

<bean id="dataSource1" class="org.enhydra.jdbc.pool.StandardXAPoolDataSource"

destroy-method="shutdown">

<property name="dataSource">

<bean class="org.enhydra.jdbc.standard.StandardXADataSource"

destroy-method="shutdown">

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

<property name="driverName" value="${datasource1.driver}" />

<property name="url" value="${datasource1.url}" />

</bean>

</property>

<property name="user" value="${datasource1.username}" />

<property name="password" value="${datasource1.password}" />

</bean>

<bean id="dataSource2" class="org.enhydra.jdbc.pool.StandardXAPoolDataSource"

destroy-method="shutdown">

<property name="dataSource">

<bean class="org.enhydra.jdbc.standard.StandardXADataSource"

destroy-method="shutdown">

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

<property name="driverName" value="${datasource2.driver}" />

<property name="url" value="${datasource2.url}" />

</bean>

</property>

<property name="user" value="${datasource2.username}" />

<property name="password" value="${datasource2.password}" />

</bean>

<bean id="sessionFactory1"

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

<property name="dataSource" ref="dataSource1" />

<property name="mappingLocations" value="${hibernate.mapping.locations}" />

<property name="hibernateProperties">

<props>

<prop key="hibernate.dialect">

${hibernate.dialect}

</prop>

<prop key="hibernate.show_sql">

${hibernate.show_sql}

</prop>

<prop key="hibernate.use_sql_comments">

${hibernate.use_sql_comments}

</prop>

</props>

</property>

</bean>

<bean id="sessionFactory2"

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

<property name="dataSource" ref="dataSource2" />

<property name="mappingLocations" value="${hibernate.mapping.special}" />

<property name="hibernateProperties">

<props>

<prop key="hibernate.dialect">

${hibernate.dialect}

</prop>

<prop key="hibernate.show_sql">

${hibernate.show_sql}

</prop>

<prop key="hibernate.use_sql_comments">

${hibernate.use_sql_comments}

</prop>

</props>

</property>

</bean>

<aop:config proxy-target-class="true">

<aop:pointcut id="servicePoint"

expression="execution (* com.xxx.function.*.service.*.*Service*.*(..))" />

<aop:advisor pointcut-ref="servicePoint" id="txAdvisor"

advice-ref="defaultTxAdvice" />

</aop:config>

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

<tx:attributes>

<tx:method name="find*" read-only="true" />

<tx:method name="get*" read-only="true" />

<tx:method name="query*" read-only="true" />

<tx:method name="load*" read-only="true" />

<tx:method name="add*" propagation="REQUIRED" rollback-for="java.lang.Exception" />

<tx:method name="create*" propagation="REQUIRED"

rollback-for="java.lang.Exception" />

<tx:method name="save*" propagation="REQUIRED"

rollback-for="java.lang.Exception" />

<tx:method name="update*" propagation="REQUIRED"

rollback-for="java.lang.Exception" />

<tx:method name="modify*" propagation="REQUIRED"

rollback-for="java.lang.Exception" />

<tx:method name="delete*" propagation="REQUIRED"

rollback-for="java.lang.Exception" />

<tx:method name="remove*" propagation="REQUIRED"

rollback-for="java.lang.Exception" />

<tx:method name="apply*" propagation="REQUIRED"

rollback-for="java.lang.Exception" />

<tx:method name="handle*" propagation="REQUIRED"

rollback-for="java.lang.Exception" />

</tx:attributes>

</tx:advice>

</beans>

另外，在使用jotm时，可能会抛如下异常：

Java代码


java.lang.NoSuchMethodError at:sun.rmi.transport.ObjectTable.getStub(Ljava/rmi/Remote;)Ljava/rmi/server/RemoteStub;

此时，在项目编译路径下新建一个属性文件，名称：carol.properties，即可解决问题。

Java代码


# JNDI (Protocol Invocation)

carol.protocols=jrmp

# Local RMI Invocation

carol.jvm.rmi.local.call=true

# do not use CAROL JNDI wrapper

carol.start.jndi=false

# do not start a name server

carol.start.ns=false

carol.start.rmi=false

# Naming Factory

carol.jndi.java.naming.factory.url.pkgs=org.apache.naming

ok。