項目進行讀寫分離及分庫分表,在一個業務中,在一個事務中處理時候將切換多個數據源,需要保證同一事務多個數據源數據的一致性。此處使用atomikos來實現:最後附源碼:
1:spring3.0之後不再支持jtom[jta]了,第三方開源軟件atomikos(http://www.atomikos.com/)來實現.
2:org.springframework.transaction.jta.JotmFactoryBean類,spring-tx-2.5.6.jar中有此類,spring-tx-3.0.0.RELEASE.jar之後沒有此類。
3:atomikos事務控制框架,其中看到有3種數據源,分別是,SimpleDataSourceBean,AtomikosDataSourceBean,AtomikosNonXADataSourceBean。
a:SimpleDataSourceBean: 這個是最簡單地數據源配置,需要配置XA驅動。
b:AtomikosDataSourceBean: 分佈式數據源,Atomikos實現的數據源,需要配置XA驅動,推薦此配置,可以配置連接池的信息。
c:AtomikosNonXADataSourceBean: 非分佈式數據源,該數據源配置需要普通JDBC的驅動,可以配置連接池:
4:Atomikos支持XA(全局事務)和NON-XA(非全局事務),NON-XA[nonxadatasource]效率高於XA.XA事務往往是包括多個數據源的全局事務,非XA是單個數據源的.
5:XA連接是一個JTA事務中的參與者。XA連接不支持JDBC的自動提交特性。也就是說應用程序不必在xadatasource[XA]連接上調用java.sql.Connection.commit()或java.sql.Connection.rollback();而應用程序應該使用UserTransaction.begin(),UserTransaction.commit()和UserTransaction.rollback().
看看pom.xml依賴:
<!-- transaction -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>4.2.5.RELEASE</version>
</dependency>
<dependency>
<groupId>javax.transaction</groupId>
<artifactId>jta</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>com.atomikos</groupId>
<artifactId>atomikos-util</artifactId>
<version>4.0.2</version>
</dependency>
<dependency>
<groupId>com.atomikos</groupId>
<artifactId>transactions</artifactId>
<version>4.0.2</version>
</dependency>
<dependency>
<groupId>com.atomikos</groupId>
<artifactId>transactions-jta</artifactId>
<version>4.0.2</version>
</dependency>
<dependency>
<groupId>com.atomikos</groupId>
<artifactId>transactions-jdbc</artifactId>
<version>4.0.2</version>
</dependency>
<dependency>
<groupId>com.atomikos</groupId>
<artifactId>transactions-api</artifactId>
<version>4.0.2</version>
</dependency>
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib-nodep</artifactId>
<version>3.2.2</version>
</dependency>
1:AtomikosDataSourceBean[XA(全局事務)]數據源配置datasource-context.xml:<?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:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.0.xsd" default-lazy-init="true">
<description>配置主-從數據源信息</description>
<!-- com.atomikos.jdbc.nonxa.AtomikosNonXADataSourceBean -->
<bean id="abstractXADataSource" class="com.atomikos.jdbc.AtomikosDataSourceBean" init-method="init" destroy-method="close" abstract="true">
<property name="xaDataSourceClassName" value="${jdbc.xaDataSourceClassName}"/> <!-- SQLErrorCodes loaded: [DB2, Derby, H2, HSQL, Informix, MS-SQL, MySQL, Oracle, PostgreSQL, Sybase, Hana] -->
<property name="poolSize" value="10" />
<property name="minPoolSize" value="10"/>
<property name="maxPoolSize" value="30"/>
<property name="borrowConnectionTimeout" value="60"/>
<property name="reapTimeout" value="20"/>
<property name="maxIdleTime" value="60"/>
<property name="maintenanceInterval" value="60"/>
<property name="loginTimeout" value="60"/>
<property name="testQuery" value="${validationQuery}"/>
</bean>
<bean id="masterDataSource" parent="abstractXADataSource">
<property name="uniqueResourceName" value="masterDB" />
<property name="xaProperties">
<props>
<prop key="driverClassName">${jdbc.driverClassName}</prop>
<prop key="url">${master.jdbc.url}</prop>
<prop key="password">${jdbc.password}</prop>
<!-- <prop key="user">${jdbc.username}</prop> --> <!-- mysql -->
<prop key="username">${jdbc.username}</prop> <!-- durid -->
<prop key="initialSize">0</prop>
<prop key="maxActive">20</prop> <!-- 若不配置則代碼執行"{dataSource-1} inited"此處停止 -->
<prop key="minIdle">0</prop>
<prop key="maxWait">60000</prop>
<prop key="validationQuery">${validationQuery}</prop>
<prop key="testOnBorrow">false</prop>
<prop key="testOnReturn">false</prop>
<prop key="testWhileIdle">true</prop>
<prop key="removeAbandoned">true</prop>
<prop key="removeAbandonedTimeout">1800</prop>
<prop key="logAbandoned">true</prop>
<prop key="filters">mergeStat</prop>
</props>
</property>
</bean>
<bean id="slaveDataSource" parent="abstractXADataSource">
<property name="uniqueResourceName" value="slaveDB" />
<property name="xaProperties">
<props>
<prop key="driverClassName">${jdbc.driverClassName}</prop>
<prop key="url">${slave.jdbc.url}</prop>
<prop key="password">${jdbc.password}</prop>
<!-- <prop key="user">${jdbc.username}</prop> -->
<prop key="username">${jdbc.username}</prop>
<prop key="initialSize">0</prop>
<prop key="maxActive">20</prop>
<prop key="minIdle">0</prop>
<prop key="maxWait">60000</prop>
<prop key="validationQuery">${validationQuery}</prop>
<prop key="testOnBorrow">false</prop>
<prop key="testOnReturn">false</prop>
<prop key="testWhileIdle">true</prop>
<prop key="removeAbandoned">true</prop>
<prop key="removeAbandonedTimeout">1800</prop>
<prop key="logAbandoned">true</prop>
<prop key="filters">mergeStat</prop>
</props>
</property>
</bean>
</beans>
2:spring主配置文件spring-context.xml:
<?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:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.2.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.2.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-3.2.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
<!-- 使用annotation 自動註冊bean,並檢查@Required,@Autowired的屬性已被注入 -->
<context:component-scan base-package="com.tx" />
<!-- 使用AspectJ方式配置AOP -->
<aop:aspectj-autoproxy />
<!-- 引入屬性配置文件 -->
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:properties/database.properties" />
</bean>
<!--或 <context:property-placeholder location="classpath*:*.properties" /> -->
</beans>
3:數據源配置參數database.properties:
#mysql-Used to verify the effectiveness of the database connection
validationQuery=SELECT 1
jdbc.initialSize=5
jdbc.maxActive=20
jdbc.maxWait=60000
jdbc.poolPreparedStatements=false
jdbc.poolMaximumIdleConnections=0
jdbc.driverClassName=org.gjt.mm.mysql.Driver
jdbc.xaDataSourceClassName=com.alibaba.druid.pool.xa.DruidXADataSource
#jdbc.xaDataSourceClassName=com.mysql.jdbc.jdbc2.optional.MysqlXADataSource
#1.tms business. 2.The db level optimization,data concurrency,desirable.
master.jdbc.url=jdbc:mysql://your ip:3306/master?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull
slave.jdbc.url=jdbc:mysql://your ip:3306/slave?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull
jdbc.username=username
jdbc.password=password
4:mybatis的配置mybatis-context.xml:
<?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:mvc="http://www.springframework.org/schema/mvc"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.0.xsd" default-lazy-init="true">
<description>MyBatis的數據庫持久層配置/配置主-從數據源</description>
<bean id="masterSqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="configLocation" value="classpath:mybatis/mybatis-config-master.xml" />
<property name="dataSource" ref="masterDataSource" />
</bean>
<bean id="slaveSqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="configLocation" value="classpath:mybatis/mybatis-config-slave.xml" />
<property name="dataSource" ref="slaveDataSource" />
</bean>
</beans>
配置mybatis-config(此代碼,只爲測試分佈式事務,並不涉及真實的業務!!!):
mybatis-config-master.xml:
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<typeAliases>
<typeAlias alias="Member" type="com.tx.entity.Member"/>
</typeAliases>
<mappers>
<mapper resource="com/tx/xml/MemberMapper.xml" />
</mappers>
</configuration>
mybatis-config-slave.xml
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration PUBLIC "-//mybatis.org//DTD Config 3.0//EN" "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
<typeAliases>
<typeAlias alias="MemberInfo" type="com.tx.entity.MemberInfo"/>
</typeAliases>
<mappers>
<mapper resource="com/tx/xml/MemberInfoMapper.xml" />
</mappers>
</configuration>
5:Mapper的管理及注入,爲mybatis的dao層mapper接口注入[綁定]sqlSessionFactory:
<?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:mvc="http://www.springframework.org/schema/mvc"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.0.xsd" default-lazy-init="true">
<description>MyBatis爲不同的mapper注入sqlSessionFactory</description>
<!-- Mapper的管理及注入 -->
<bean id="memberMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">
<property name="sqlSessionFactory" ref="masterSqlSessionFactory" />
<property name="mapperInterface" value="com.tx.dao.MemberMapper" />
</bean>
<bean id="memberInfoMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">
<property name="sqlSessionFactory" ref="slaveSqlSessionFactory" />
<property name="mapperInterface" value="com.tx.dao.MemberInfoMapper" />
</bean>
</beans>
6:atomikos事務配置transaction-context.xml:
<?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:mvc="http://www.springframework.org/schema/mvc" xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:aop="http://www.springframework.org/schema/aop"
xsi:schemaLocation="http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-4.0.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx-4.0.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop-4.0.xsd" default-lazy-init="true">
<description>配置事物</description>
<!-- atomikos事務管理器 -->
<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="300" />
</bean>
<!-- spring 事務管理器 -->
<bean id="springTransactionManager" class="org.springframework.transaction.jta.JtaTransactionManager">
<property name="transactionManager" ref="atomikosTransactionManager" />
<property name="userTransaction" ref="atomikosUserTransaction" />
<!-- 必須設置,否則程序出現異常 JtaTransactionManager does not support custom isolation levels by default -->
<property name="allowCustomIsolationLevels" value="true"/>
</bean>
<aop:config proxy-target-class="true">
<aop:advisor pointcut="(execution(* com.tx.service.*.* (..)))" advice-ref="txAdvice" />
</aop:config>
<tx:advice id="txAdvice" transaction-manager="springTransactionManager">
<tx:attributes>
<tx:method name="get*" propagation="REQUIRED" read-only="true" />
<tx:method name="find*" propagation="REQUIRED" read-only="true" />
<tx:method name="has*" propagation="REQUIRED" read-only="true" />
<tx:method name="locate*" propagation="REQUIRED" read-only="true" />
<tx:method name="register*" propagation="REQUIRED" rollback-for="java.lang.Exception" />
</tx:attributes>
</tx:advice>
</beans>
7:配置jta啓動參數在src下,最後追加詳細:
com.atomikos.icatch.service=com.atomikos.icatch.standalone.UserTransactionServiceFactory
com.atomikos.icatch.console_file_name = /home/logs/tx/tx.out.log
com.atomikos.icatch.log_base_name = txlog
com.atomikos.icatch.tm_unique_name = com.atomikos.spring.jdbc.tm
com.atomikos.icatch.console_log_level=DEBUG
8:代碼(部分不涉及代碼已刪除):
a:mybatis的mapper和dao接口[MemberMapper/MemberInfoMapper]:
package com.tx.dao;
import com.tx.entity.Member;
public interface MemberMapper {
int insert(Member record);
}
package com.tx.dao;
import com.tx.entity.MemberInfo;
public interface MemberInfoMapper {
int insert(MemberInfo record);
}
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.tx.dao.MemberMapper" >
<resultMap id="BaseResultMap" type="com.tx.entity.Member" >
<id column="id" property="id" jdbcType="INTEGER" />
<result column="username" property="username" jdbcType="VARCHAR" />
<result column="password" property="password" jdbcType="VARCHAR" />
<result column="status" property="status" jdbcType="TINYINT" />
</resultMap>
<sql id="Base_Column_List" >
id, username, password, status
</sql>
<insert id="insert" parameterType="com.tx.entity.Member" >
insert into member (id, username, password,
status)
values (#{id,jdbcType=INTEGER}, #{username,jdbcType=VARCHAR}, #{password,jdbcType=VARCHAR},
#{status,jdbcType=TINYINT})
</insert>
</mapper>
<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd" >
<mapper namespace="com.tx.dao.MemberInfoMapper" >
<resultMap id="BaseResultMap" type="com.tx.entity.MemberInfo" >
<id column="id" property="id" jdbcType="INTEGER" />
<result column="nickname" property="nickname" jdbcType="VARCHAR" />
<result column="realname" property="realname" jdbcType="VARCHAR" />
<result column="age" property="age" jdbcType="TINYINT" />
</resultMap>
<sql id="Base_Column_List" >
id, nickname, realname, age
</sql>
<insert id="insert" parameterType="com.tx.entity.MemberInfo" >
insert into member_info (id, nickname, realname,
age)
values (#{id,jdbcType=INTEGER}, #{nickname,jdbcType=VARCHAR}, #{realname,jdbcType=VARCHAR},
#{age,jdbcType=TINYINT})
</insert>
</mapper>
b:服務層接口和實現:
package com.tx.sevice;
import com.tx.entity.Member;
import com.tx.entity.MemberInfo;
public interface MemberService {
boolean registerMember(Member member, MemberInfo memberInfo);
}
package com.tx.sevice.impl;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.tx.dao.MemberInfoMapper;
import com.tx.dao.MemberMapper;
import com.tx.entity.Member;
import com.tx.entity.MemberInfo;
import com.tx.sevice.MemberService;
@Service("memberService")
public class MemberServiceImpl implements MemberService {
//log
private static final Logger LOG = LoggerFactory.getLogger(MemberServiceImpl.class);
@Autowired
private MemberMapper memberMapper;
@Autowired
private MemberInfoMapper memberInfoMapper;
@Override
public boolean registerMember(Member member, MemberInfo memberInfo) {
boolean resRegister = false;
try {
if(memberMapper.insert(member) != 1){
throw new RuntimeException("註冊用戶:Member表數據插入不一致.");
}
if(memberInfoMapper.insert(memberInfo) != 1){
throw new RuntimeException("註冊用戶:MemberInfo表數據插入不一致.");
}
resRegister = true;
} catch (Exception e) {
LOG.info("註冊用戶:數據庫保存異常." + e.getMessage(), e);
throw new RuntimeException("註冊用戶:數據庫保存異常");
}
return resRegister;
}
}
c:junit測試代碼:
package com.tx.test;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import com.tx.entity.Member;
import com.tx.entity.MemberInfo;
import com.tx.sevice.MemberService;
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"classpath:spring-context.xml","classpath:datasource-context.xml",
"classpath:mybatis-context.xml","classpath:mapper-context.xml","classpath:transaction-context.xml"})
public class JTATest {
//log
private static final Logger LOG = LoggerFactory.getLogger(JTATest.class);
@Autowired
private MemberService memberService;
@Test
public void testRegister(){
Member member = new Member();
member.setId(2);
member.setUsername("童可可");
member.setPassword("12345678");
member.setStatus((byte)0);
MemberInfo memberInfo = new MemberInfo();
memberInfo.setId(2);
memberInfo.setAge((byte)25);
memberInfo.setNickname("keke");
memberInfo.setRealname("童可可");
if(memberService.registerMember(member, memberInfo)){
LOG.info("##用戶註冊成功");
}else{
LOG.info("##用戶註冊失敗");
}
}
}
注:通過主鍵重複可以測試回滾,數據沒問題,正常提交不同數據庫!log4j和web.xml和sql,其他代碼:Spring實現數據庫讀寫分離/spring事務配置解釋
效果圖:
執行前,master數據庫:
執行前,slave數據庫:
執行後,master數據庫:
執行後,slave數據庫:
spring-tx-2.5.6.jar和spring-tx-3.0.0.RELEASE.jar目錄:
jta.properties啓動參數:
# SAMPLE PROPERTIES FILE FOR THE TRANSACTION SERVICE
# THIS FILE ILLUSTRATES THE DIFFERENT SETTINGS FOR THE TRANSACTION MANAGER
# UNCOMMENT THE ASSIGNMENTS TO OVERRIDE DEFAULT VALUES;
# Required: factory implementation class of the transaction core.
# NOTE: there is no default for this, so it MUST be specified!
#
com.atomikos.icatch.service=com.atomikos.icatch.standalone.UserTransactionServiceFactory
# Set base name of file where messages are output
# (also known as the 'console file').
#
com.atomikos.icatch.console_file_name = tm.out
# Size limit (in bytes) for the console file;
# negative means unlimited.
#
# com.atomikos.icatch.console_file_limit=-1
# For size-limited console files, this option
# specifies a number of rotating files to
# maintain.
#
# com.atomikos.icatch.console_file_count=1
# Set the number of log writes between checkpoints
#
# com.atomikos.icatch.checkpoint_interval=500
# Set output directory where console file and other files are to be put
# make sure this directory exists!
#
# com.atomikos.icatch.output_dir = ./
# Set directory of log files; make sure this directory exists!
#
# com.atomikos.icatch.log_base_dir = ./
# Set base name of log file
# this name will be used as the first part of
# the system-generated log file name
#
com.atomikos.icatch.log_base_name = tmlog
# Set the max number of active local transactions
# or -1 for unlimited.
#
# com.atomikos.icatch.max_actives = 50
# Set the default timeout (in milliseconds) for local transactions
#
# com.atomikos.icatch.default_jta_timeout = 10000
# Set the max timeout (in milliseconds) for local transactions
#
# com.atomikos.icatch.max_timeout = 300000
# The globally unique name of this transaction manager process
# override this value with a globally unique name
#
com.atomikos.icatch.tm_unique_name = tm
# Do we want to use parallel subtransactions? JTA's default
# is NO for J2EE compatibility
#
# com.atomikos.icatch.serial_jta_transactions=true
# If you want to do explicit resource registration then
# you need to set this value to false.
#
# com.atomikos.icatch.automatic_resource_registration=true
# Set this to WARN, INFO or DEBUG to control the granularity
# of output to the console file.
#
com.atomikos.icatch.console_log_level=INFO
# Do you want transaction logging to be enabled or not?
# If set to false, then no logging overhead will be done
# at the risk of losing data after restart or crash.
#
# com.atomikos.icatch.enable_logging=true
# Should two-phase commit be done in (multi-)threaded mode or not?
# Set this to false if you want commits to be ordered according
# to the order in which resources are added to the transaction.
#
# NOTE: threads are reused on JDK 1.5 or higher.
# For JDK 1.4, thread reuse is enabled as soon as the
# concurrent backport is in the classpath - see
# http://mirrors.ibiblio.org/pub/mirrors/maven2/backport-util-concurrent/backport-util-concurrent/
#
# com.atomikos.icatch.threaded_2pc=false
# Should shutdown of the VM trigger shutdown of the transaction core too?
#
# com.atomikos.icatch.force_shutdown_on_vm_exit=false
分佈式事務操作之Spring+JTA可參照: http://www.cnblogs.com/wangyong/p/4174326.html
Atomikos 中文說明文檔:http://blog.csdn.net/sun8288/article/details/8674016