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spring+jotm 多数据源事务管理(一)jdbc

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  • hanqunfeng
  • 等级: 四星会员
  • 性别:
  • 文章: 59
  • 积分: 470
  • 来自: 北京
   发表时间：2012-06-07  

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。

 

 

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。

 

先看一个没有加入jotm的例子 ：

<?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="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="jdbcTemplate1" class="org.springframework.jdbc.core.JdbcTemplate"
		p:dataSource-ref="dataSource1" />
	<bean id="jdbcTemplate2" class="org.springframework.jdbc.core.JdbcTemplate"
		p:dataSource-ref="dataSource2" />
	

	<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>

	<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>


	<bean id="transactionManager1"
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource1" />
	</bean>

       <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="txAdvice2" 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>


	<bean id="transactionManager2"
		class="org.springframework.jdbc.datasource.DataSourceTransactionManager">
		<property name="dataSource" ref="dataSource2" />
	</bean>

 </beans>

  这样的配置不能够将两个数据源放到同一个事务中，一个事务回滚不会使另一个事务同时回滚，这样就会造成脏数据。

 

  spring本身提供了对jotm的支持，所以spring整合jotm很方便，下面看加入jotm的例子 ：

<?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="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
		<property name="dataSource" ref="dataSource1" />
	</bean>

	<bean id="jdbcTemplateDas" class="org.springframework.jdbc.core.JdbcTemplate">
		<property name="dataSource" ref="dataSource2" />
	</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">
		<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>

  ok，这样两个数据源就会统一由jotm进行管理，代码层面不需要任何修改。
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  • lvzhangsheng
  • 等级: 初级会员
  • 性别:
  • 文章: 1
  • 积分: 30
  • 来自: 武汉
   发表时间：2012-11-09  
大侠，配置jotm的jar包需要哪些啊，我找了几个jar包都不行，谢谢了
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