使用Atomikos Transactions Essentials实现多数据源JTA分布式事务

最新推荐文章于 2024-04-19 09:43:49 发布

转载最新推荐文章于 2024-04-19 09:43:49 发布 · 2.5k 阅读

本文介绍如何使用Atomikos Transactions Essentials实现基于Spring和iBatis的JTA/XA分布式事务管理。通过配置Atomikos事务管理器、数据源及Spring事务管理器，实现跨多个MySQL和Oracle数据库的一致性事务。

分类：数据库 / MySQL / 文章

http://www.iitshare.com/atomikos-distributed-transaction.html

使用Atomikos Transactions Essentials实现多数据源JTA分布式事务

9.17 update:使用NonXADataSourceBean. Mysql在5.0版本和Connecter/J5.0版本后提供了XADatasource支持，如果使用了支持XADatasouce版本，可以参考2楼补充.

最近做的project中遇到要将数据库中的表分布到两台不同的服务器上的Mysql5.0中，project主要使用spring+ibatis。因此需要JTA的支持，但是tomcat不支持，所以就搜索开源的JTA实现。
最开始使用的是JOTM，但是使用中不能自动rollback，无论什么情况都commit。然后看到infoq上一篇文章提到Atomikos Transactions Essentials，Atomikos Transactions Essentials 3.0是Atomikos 开发的核心事务引擎，支持JDBC 以及JMS 的JTA/XA 事务。易于部署，轻量级，同时支持JDBC 以及JMS 。
Atomikos Transactions Essentials现在的版本是3.1.7,可以在http://www.atomikos.com/Main/TransactionsEssentialsDownloadForm 下载，在发布包里的examples文件夹下面有些例子，非常实用，我在使用中参考里面的例子很容易配置成功。先将发布包里面dist目录下的atomikos-util.jar，transactions.jar，transactions-api.jar，transactions-jta.jar copy到项目lib里面，如果使用hibernate则需要将另外两个hibernate相关的jar页copy到项目里面，spring配置文件如下:

xml 代码

< bean id = "dataSource" class = "com.atomikos.jdbc.SimpleDataSourceBean" init-method = "init" destroy-method = "close" >
< property name = "uniqueResourceName" >
< value > mysql/main </ value >
</ property >
< property name = "xaDataSourceClassName" >
< value > com.mysql.jdbc.jdbc2.optional.MysqlXADataSource </ value >
</ property >
< property name = "xaDataSourceProperties" >
< value > URL =${jdbc.url}; user =${jdbc.username}; password =${jdbc.password} </ value >
</ property >
< property name = "exclusiveConnectionMode" >
< value > true </ value >
</ property >
< property name = "connectionPoolSize" >
< value > 3 </ value >
</ property >
< property name = "validatingQuery" >
< value > SELECT 1 </ value >
</ property >
</ bean >
< bean id = "dataSourceB" class = "com.atomikos.jdbc.SimpleDataSourceBean" init-method = "init" destroy-method = "close" >
< property name = "uniqueResourceName" >
< value > mysql/news </ value >
</ property >
< property name = "xaDataSourceClassName" >
< value > com.mysql.jdbc.jdbc2.optional.MysqlXADataSource </ value >
</ property >
< property name = "xaDataSourceProperties" >
< value > URL =${jdbc.url.b}; user =${jdbc.username.b}; password =${jdbc.password.b} </ value >
</ property >
< property name = "exclusiveConnectionMode" >
< value > true </ value >
</ property >
< property name = "connectionPoolSize" >
< value > 3 </ value >
</ property >
< property name = "validatingQuery" >
< value > SELECT 1 </ value >
</ property >
</ bean >
< bean id = "lobHandler" class = "org.springframework.jdbc.support.lob.DefaultLobHandler" />
< bean id = "sqlMapClient" class = "org.springframework.orm.ibatis.SqlMapClientFactoryBean" >
< property name = "configLocation" >
< value > classpath:/sqlmap-config.xml </ value >
</ property >
< property name = "dataSource" ref = "dataSource" />
< property name = "lobHandler" ref = "lobHandler" />
</ bean >
< bean id = "sqlMapClientB" class = "org.springframework.orm.ibatis.SqlMapClientFactoryBean" >
< property name = "configLocation" >
< value > classpath:/sqlmap-configb.xml </ value >
</ property >
< property name = "dataSource" ref = "dataSourceB" />
< property name = "lobHandler" ref = "lobHandler" />
</ bean >
< bean id = "atomikosTransactionManager" class = "com.atomikos.icatch.jta.UserTransactionManager" init-method = "init"
destroy-method = "close" >
< property name = "forceShutdown" >
< value > true </ value >
</ property >
</ bean >
< bean id = "atomikosUserTransaction" class = "com.atomikos.icatch.jta.UserTransactionImp" >
< property name = "transactionTimeout" value = "240" />
</ bean >
< bean id = "transactionManager" class = "org.springframework.transaction.jta.JtaTransactionManager" >
< property name = "transactionManager" >
< ref bean = "atomikosTransactionManager" />
</ property >
< property name = "userTransaction" >
< ref bean = "atomikosUserTransaction" />
</ property >
</ bean >

事务的配置, 使用了spring2.0的语法，所以将namesapce也帖出来了.

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"
default-autowire = "byName" default-lazy-init = "true" >
< aop:aspectj-autoproxy />
< aop:config proxy-target-class = "true" >
< aop:advisor pointcut = "execution(* *Facade.*(..))" advice-ref = "txAdvice" />
< aop:advisor pointcut = "execution(* *Manager.*(..))" advice-ref = "txAdvice" />
</ aop:config >
< tx:advice id = "txAdvice" >
< tx:attributes >
< tx:method name = "get*" read-only = "true" />
< tx:method name = "find*" read-only = "true" />
< tx:method name = "has*" read-only = "true" />
< tx:method name = "locate*" read-only = "true" />
< tx:method name = "*" />
</ tx:attributes >
</ tx:advice >
</ beans >

这样配置以后就可以使用分布式事务，测试中出现异常时事务也自动提交。和JOTM相比Atomikos Transactions Essentials更加稳定，它原来是商业项目，现在开源了。象mysql一样卖服务支持的。而且论坛页比较活跃，有问题很快可以解决。

1 楼 andyao 2007-09-10

使用XADatasource的数据源配置

<!-- 第一个数据库 -->
	<bean id="dataSource" class="com.atomikos.jdbc.SimpleDataSourceBean" init-method="init" destroy-method="close">
		<property name="uniqueResourceName">
			<value>mysql/main</value>
		</property>
		<property name="xaDataSourceClassName">
			<!-- 使用Mysql XADataSource(mysql>=5.0, Connector/J>=5.0才可以支持XADatasource)-->
			<value>com.mysql.jdbc.jdbc2.optional.MysqlXADataSource</value>
		</property>
		<property name="xaDataSourceProperties">
			<value>URL=${jdbc.url};user=${jdbc.username};password=${jdbc.password}</value>
		</property>
		<property name="exclusiveConnectionMode">
			<value>true</value>
		</property>
		<property name="connectionPoolSize">
			<value>3</value>
		</property>
		<property name="validatingQuery">
			<value>SELECT 1</value>
		</property>
	</bean>
	<!-- 第二个数据库 -->
	<bean id="dataSourceB" class="com.atomikos.jdbc.SimpleDataSourceBean" init-method="init" destroy-method="close">
		<property name="uniqueResourceName">
			<value>mysql/news</value>
		</property>
		<property name="xaDataSourceClassName">
			<!-- 使用Mysql XADataSource(mysql>=5.0, Connector/J>=5.0才可以支持XADatasource)-->
			<value>com.mysql.jdbc.jdbc2.optional.MysqlXADataSource</value>
		</property>
		<property name="xaDataSourceProperties">
			<value>URL=${jdbc.url.b};user=${jdbc.username.b};password=${jdbc.password.b}</value>
		</property>
		<property name="exclusiveConnectionMode">
			<value>true</value>
		</property>
		<property name="connectionPoolSize">
			<value>3</value>
		</property>
		<property name="validatingQuery">
			<value>SELECT 1</value>
		</property>
	</bean>

2 楼 andyao 2007-09-17

andyao 写道

core里面怎么有这么多span，编辑的时候没有。

已经修改好

3 楼 away5678 2007-09-30

不用SPRING2.0配置方法行吗

4 楼 andyao 2007-10-08

不用Spring也可以，直接编程使用.

5 楼 81261686 2007-11-25

我也使用了Atomikos Transactions做分布式事务,tomcat+hibernate+spring,事务能成功rollback,便在停tomcat时候老是有
错，错误信息如下:
Exception in thread "Thread-14" java.lang.NullPointerException
at com.atomikos.icatch.system.Configuration.removeResource(Unknown Source)
at com.atomikos.jdbc.JtaDataSourceImp.close(Unknown Source)
at com.atomikos.jdbc.DataSourceShutdownHook.run(Unknown Source)
Exception in thread "Thread-6" java.lang.NullPointerException
at com.atomikos.icatch.system.Configuration.removeResource(Unknown Source)
at com.atomikos.jdbc.JtaDataSourceImp.close(Unknown Source)
at com.atomikos.jdbc.DataSourceShutdownHook.run(Unknown Source)
Unknown Source倒底是什么指资源?

6 楼 andycui 2008-01-08

我最近也用JOTM做JTA，也发现不能rollback oracle数据库，后来发现使用的datasource是C3P0，好像C3P0是不支持XADATASOURCE的，后来我把C3P0换成XAPOOL，发现一切OK，能回滚了，查了C3P0的官方文档，发现它仅仅只是说它是对JDBC3和JDBC2的一些补充，没有提及XADATASOURCE方面的东西，估计就是不支持，我不确定

7 楼 andyao 2008-01-10

andycui 写道

C3P0不支持XADatasource.

而且使用数据库的时候也要使用数据库的XA驱动

8 楼 baoyaer 2008-06-18

Caused by: com.atomikos.icatch.SysException: Error in init(): Log already in use?
[17:03:01.375] at com.atomikos.icatch.standalone.UserTransactionServiceImp.init(Unknown Source)
[17:03:01.375] at com.atomikos.icatch.config.UserTransactionServiceImp.init(Unknown Source)
[17:03:01.375] at com.atomikos.icatch.jta.UserTransactionManager.checkSetup(Unknown Source)
[17:03:01.375] at com.atomikos.icatch.jta.UserTransactionManager.init(Unknown Source)
[17:03:01.375] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[17:03:01.375] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
[17:03:01.375] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
[17:03:01.375] at java.lang.reflect.Method.invoke(Method.java:597)
[17:03:01.375] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeCustomInitMethod(AbstractAutowireCapableBeanFactory.java:1240)
[17:03:01.375] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1205)
[17:03:01.375] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1171)
[17:03:01.375] ... 90 more

这个错误难道各位都没遇到？奇了怪！这个问题在3.1之前是个bug,作者后来说要修复，但是我在3.2，3.3中都碰到了

9 楼 bagui3 2008-07-15

引用

Caused by: com.atomikos.icatch.SysException: Error in init(): Log already in use?
[17:03:01.375] at com.atomikos.icatch.standalone.UserTransactionServiceImp.init(Unknown Source)
[17:03:01.375] at com.atomikos.icatch.config.UserTransactionServiceImp.init(Unknown Source)
[17:03:01.375] at com.atomikos.icatch.jta.UserTransactionManager.checkSetup(Unknown Source)
[17:03:01.375] at com.atomikos.icatch.jta.UserTransactionManager.init(Unknown Source)
[17:03:01.375] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
[17:03:01.375] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
[17:03:01.375] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
[17:03:01.375] at java.lang.reflect.Method.invoke(Method.java:597)
[17:03:01.375] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeCustomInitMethod(AbstractAutowireCapableBeanFactory.java:1240)
[17:03:01.375] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1205)
[17:03:01.375] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1171)
[17:03:01.375] ... 90 more
这个错误难道各位都没遇到？奇了怪！这个问题在3.1之前是个bug,作者后来说要修复，但是我在3.2，3.3中都碰到了

删掉项目里面的一个tm***.lck文件就可以了

Spring+iBatis+Atomikos实现JTA事务

Atomikos分两个：一个是开源的TransactionEssentials，一个是商业的ExtremeTransactions。
TransactionEssentials的主要特征：JTA/XA 事务管理 —— 提供事务管理和连接池不需要应用服务器 —— TransactionEssentials可以在任何Java EE应用服务器中运行，也就是不依赖于任何应用服务器开源 —— TransactionEssentials是遵守Apache版本2许可的开源软件专注于JDBC/JMS —— 支持所有XA资源，但是资源池和消息监听是专供JDBC和JMS的与Spring 和 Hibernate 集成 —— 提供了描述如何与Spring和Hibernate集成的文档
一、环境

spring 2

ibatis2

AtomikosTransactionsEssentials-3.7.0 下载地址：http://www.atomikos.com/Main/InstallingTransactionsEssentials

MySQL-5.1 ：数据库引擎为InnoDB，只有这样才能支持事务

JDK1.6

Oracle10

二 jar包

Atomikos jar必须包 transactions-jdbc.jar

transactions-jta.jar

transactions.jar

atomikos-util.jar

transactions-api.jar

ibatis,spring

只要符合二者集成jar组合即可，无额外jar

三、配置

Oracle用户授权：（视情况而定，如果程序出现如下异常则需要加上1672 [main] WARN atomikos - ERROR IN RECOVERY com.atomikos.datasource.ResourceException: Error in recovery）

grant select on sys.dba_pending_transactions to orcl;

grant select on sys.pending_trans$ to orcl;

grant select on sys.dba_2pc_pending to orcl;

grant execute on sys.dbms_system to orcl;

jta.properties 配置文件，即src/ jta.properties内容如下：

 
              com.atomikos.icatch.service=com.atomikos.icatch.standalone.UserTransactionServiceFactory
             
              com.atomikos.icatch.console_file_name = tm.out 
             
              com.atomikos.icatch.log_base_name = tmlog 
             
              com.atomikos.icatch.tm_unique_name = com.atomikos.spring.jdbc.tm 
             
              com.atomikos.icatch.console_log_level = INFO

spring配置文件

        
       
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 "
          >
          

          <!--
           事物管理器 
          -->
          

          <
          bean 
          id
          ="atomikosUserTransaction"
          
        class
          ="com.atomikos.icatch.jta.UserTransactionImp"
          >
          
        
          <
          description
          >
          UserTransactionImp
          </
          description
          >
          
        
          <
          property 
          name
          ="transactionTimeout"
           value
          ="300"
          />
          
    
          </
          bean
          >
          

    
          <
          bean 
          id
          ="atomikosTransactionManager"
          
        class
          ="com.atomikos.icatch.jta.UserTransactionManager"
          
        init-method
          ="init"
           destroy-method
          ="close"
          >
          
        
          <
          description
          >
          UserTransactionManager
          </
          description
          >
          
        
          <
          property 
          name
          ="forceShutdown"
          >
          
            
          <
          value
          >
          true
          </
          value
          >
          
        
          </
          property
          >
          
    
          </
          bean
          >
          
    
    
          <
          bean 
          id
          ="transactionManager"
          
        class
          ="org.springframework.transaction.jta.JtaTransactionManager"
          >
          
        
          <
          description
          >
          JtaTransactionManager
          </
          description
          >
          
        
          <
          property 
          name
          ="transactionManager"
          >
          
            
          <
          ref 
          bean
          ="atomikosTransactionManager"
           
          />
          
        
          </
          property
          >
          
        
          <
          property 
          name
          ="userTransaction"
          >
          
            
          <
          ref 
          bean
          ="atomikosUserTransaction"
           
          />
          
        
          </
          property
          >
          
        
          <
          property 
          name
          ="allowCustomIsolationLevels"
           value
          ="true"
          />
           
          <!
          —必须设置，否则程序出现异常 JtaTransactionManager does not support custom isolation levels by default --
          >
          

          <!
          —oracle数据源定义 --
          >
          
    
          </
          bean
          >
           

          <
          bean 
          id
          ="oracleDS"
           class
          ="com.atomikos.jdbc.AtomikosDataSourceBean"
          
        init-method
          ="init"
           destroy-method
          ="close"
          >
          
        
          <
          description
          >
          oracle xa datasource
          </
          description
          >
          
        
          <
          property 
          name
          ="uniqueResourceName"
          >
          
            
          <
          value
          >
          oracle_ds
          </
          value
          >
          
        
          </
          property
          >
          
        
          <
          property 
          name
          ="xaDataSourceClassName"
          >
          
            
          <
          value
          >
          oracle.jdbc.xa.client.OracleXADataSource
          </
          value
          >
          
        
          </
          property
          >
          
        
          <
          property 
          name
          ="xaProperties"
          >
          
            
          <
          props
          >
          
                
          <
          prop 
          key
          ="user"
          >
          orcl
          </
          prop
          >
          
                
          <
          prop 
          key
          ="password"
          >
          123
          </
          prop
          >
          
                
          <
          prop 
          key
          ="URL"
          >
          jdbc:oracle:thin:@ localhost:1521:orcl
          </
          prop
          >
          
            
          </
          props
          >
          
        
          </
          property
          >
          
        
          <
          property 
          name
          ="testQuery"
          >
          
        
          <
          value
          >
          select 1 from dual
          </
          value
          >
           
          <!
          —尽力加上，不然会出现告警 --
          >
          
        
          </
          property
          >
          
    
          </
          bean
          >
          

    
          <!
          — mysql数据源定义 --
          >
          
    
          <
          bean 
          id
          ="dataSourceoracle2"
           class
          ="com.atomikos.jdbc.AtomikosDataSourceBean"
          
        init-method
          ="init"
           destroy-method
          ="close"
          >
          
        
          <
          description
          >
          mysql xa datasource
          </
          description
          >
          
        
          <
          property 
          name
          ="uniqueResourceName"
          >
          
            
          <
          value
          >
          mysql_ds
          </
          value
          >
          
        
          </
          property
          >
          
        
          <
          property 
          name
          ="xaDataSourceClassName"
          >
          
            
          <
          value
          >
          com.mysql.jdbc.jdbc2.optional.MysqlXADataSource
          </
          value
          >
          
        
          </
          property
          >
          
        
          <
          property 
          name
          ="xaProperties"
          >
          
            
          <
          props
          >
          
                
          <
          prop 
          key
          ="user"
          >
          root
          </
          prop
          >
          
                
          <
          prop 
          key
          ="password"
          >
          123
          </
          prop
          >
          
                
          <
          prop 
          key
          ="URL"
          >
          jdbc:mysql://localhost:3306/test?useUnicode=true
          &amp;
          characterEncoding=utf-8
          </
          prop
          >
          
            
          </
          props
          >
          
        
          </
          property
          >
          
        
          <
          property 
          name
          ="testQuery"
          >
          
        
          <
          value
          >
          select 1
          </
          value
          >
          <!
          —尽力加上，不然会出现告警 --
          >
          
        
          </
          property
          >
          
    
          </
          bean
          >
          


          <!--
            ibatis配置源 
          -->
          
    
          <
          bean 
          id
          ="sqlMapClient"
          
        class
          ="org.springframework.orm.ibatis.SqlMapClientFactoryBean"
          >
          
        
          <
          property 
          name
          ="configLocation"
          
            value
          ="classpath:sql-moredata-config.xml"
           
          />
          
        
          <
          property 
          name
          ="dataSource"
           ref
          ="oracleDS"
           
          />
          
    
          </
          bean
          >
          
    
    
          <!--
           ibatis配置源2 
          -->
          
    
          <
          bean 
          id
          ="sqlMapClient2"
          
        class
          ="org.springframework.orm.ibatis.SqlMapClientFactoryBean"
          >
          
        
          <
          property 
          name
          ="configLocation"
          
            value
          ="classpath:sql-moredata2-config.xml"
           
          />
          
        
          <
          property 
          name
          ="dataSource"
           ref
          ="dataSourceoracle2"
           
          />
          
    
          </
          bean
          >
          


          <
          bean 
          id
          ="testDaoR"
          
        class
          ="com.test.moredata.TestDAOImpR"
          >
          
        
          <
          property 
          name
          ="sqlMapClient"
           ref
          ="sqlMapClient"
          ></
          property
          >
          
    
          </
          bean
          >
          

          <
          bean 
          id
          ="testDao"
          
        class
          ="com.test.moredata.TestDAOImp"
          >
          
        
          <
          property 
          name
          ="sqlMapClient"
           ref
          ="sqlMapClient2"
          ></
          property
          >
          
    
          </
          bean
          >
          

    
          <
          bean 
          id
          ="testService"
          
        class
          ="com.test.moredata.TestService"
          >
          
        
          <
          property 
          name
          ="testDao"
           ref
          ="testDao"
          ></
          property
          >
          
        
          <
          property 
          name
          ="testDaoR"
           ref
          ="testDaoR"
          ></
          property
          >
          
    
          </
          bean
          >
          

          <!
          — aop配置 --
          >
          
    
          <
          tx:advice 
          id
          ="transactionManagerAdivice"
          
        transaction-manager
          ="transactionManager"
          >
          
        
          <
          tx:attributes
          >
          
            
          <
          tx:method 
          name
          ="*"
           isolation
          ="READ_COMMITTED"
          
                propagation
          ="REQUIRED"
           rollback-for
          ="java.lang.RuntionException"
           
          />
          
        
          </
          tx:attributes
          >
          
    
          </
          tx:advice
          >
          

          <
          aop:config
          >
          
            
          <
          aop:pointcut
            
          expression
          ="execution(* com.test.moredata.TestService.*(..))"
          
            id
          ="tsServicePc"
           
          />
          
            
          <
          aop:advisor 
          advice-ref
          ="transactionManagerAdivice"
          
            pointcut-ref
          ="tsServicePc"
           
          />
          
    
          </
          aop:config
          >
         
 
       

        
       