JAVA分布式事务atomikos

忘是亡心i 2022-09-23 14:54 67阅读 0赞

出于对作者的尊重和感谢，原文地址为 http://www.cnblogs.com/cerxp/p/3468097.html

1.现有方案

a.atomikos

b.jotm

说明:spring3.0已将jotm的支持踢掉

2.使用atomikos时的pom.xml内容

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<dependency>
                <groupId>javax.transaction</groupId>
                <artifactId>jta</artifactId>
                <version>1.1</version>
            </dependency>                    
            <dependency>
                <groupId>com.atomikos</groupId>
                <artifactId>transactions</artifactId>
                <version>3.9.1</version>
            </dependency>
            <dependency>
                <groupId>com.atomikos</groupId>
                <artifactId>transactions-api</artifactId>
                <version>3.9.1</version>
            </dependency>
            <dependency>
                <groupId>com.atomikos</groupId>
                <artifactId>transactions-jta</artifactId>
                <version>3.9.1</version>
            </dependency>
            <dependency>
                <groupId>com.atomikos</groupId>
                <artifactId>transactions-jdbc</artifactId>
                <version>3.9.1</version>
            </dependency>
            <dependency>
                <groupId>com.atomikos</groupId>
                <artifactId>atomikos-util</artifactId>
                <version>3.9.1</version>
            </dependency>

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3.使用atomikos时不能使用不支持jta的连接池如c3p0

4.spring配制如下:

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<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer"> 
            <property name="location" value="classpath:db.properties"/> 
        </bean>    
        <bean id="dataSource" class="com.atomikos.jdbc.AtomikosDataSourceBean" init-method="init" destroy-method="close"  lazy-init="true">
             <property name="uniqueResourceName" value="dataSource" />
            <property name="xaDataSourceClassName" value="com.mysql.jdbc.jdbc2.optional.MysqlXADataSource" />
            <property name="xaProperties">
                <props>   
                    <prop key="url">${db.url}</prop>
                    <prop key="user">${db.username}</prop>
                    <prop key="password">${db.password}</prop>
               </props>
            </property>
            <property name="poolSize" value="10"/>
            <property name="maxPoolSize" value="100"/>
        </bean>    
        <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">
            <property name="dataSource">
                <ref bean="dataSource" />
            </property>
        </bean>
            
        <bean id="userTransactionService" class="com.atomikos.icatch.config.UserTransactionServiceImp" init-method="init" destroy-method="shutdownForce">
            <constructor-arg>
                <props>
                    <prop key="com.atomikos.icatch.service">com.atomikos.icatch.standalone.UserTransactionServiceFactory</prop>
                </props>
            </constructor-arg>
        </bean>
    
        <bean id="atomikosTransactionManager" class="com.atomikos.icatch.jta.UserTransactionManager" init-method="init" destroy-method="close" depends-on="userTransactionService">
            <property name="forceShutdown" value="false" />
        </bean>
    
        <bean id="atomikosUserTransaction" class="com.atomikos.icatch.jta.UserTransactionImp" depends-on="userTransactionService">
            <property name="transactionTimeout" value="300" />
        </bean>
    
        <bean id="jtaTransactionManager" class="org.springframework.transaction.jta.JtaTransactionManager" depends-on="userTransactionService">
            <property name="transactionManager" ref="atomikosTransactionManager" />
            <property name="userTransaction" ref="atomikosUserTransaction" />
        </bean>
    
        <tx:annotation-driven transaction-manager="jtaTransactionManager" />

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5.service里采用标签来实现事务如下:

@Transactional(propagation=Propagation.REQUIRED,rollbackFor=Exception.class)
    public void TestTransaction() throws Exception{
    }

6.特别说明:

有人提出:使用spring的代理datasource来让spring管理事务，性能问题解决，提高8倍,见下面的连接

[http://blog.sina.com.cn/s/blog\_53765cf9010176zx.html][http_blog.sina.com.cn_s_blog_53765cf9010176zx.html]

我还没有证实,找时间来看一下

[copycode.gif]: /images/20220720/f57ec8a4dd70413c9d8c3df63ac172b4.png
[http_blog.sina.com.cn_s_blog_53765cf9010176zx.html]: http://blog.sina.com.cn/s/blog_53765cf9010176zx.html