atomikos jta 分布式事务（多数据源）处理

1.1、事务的定义：

事务是指多个操作单元组成的合集，多个单元操作是整体不可分割的，要么都操作不成功，要么都成功。其必须遵循四个原则（ACID）

1.2、事务四个原则（ACID）

1、原子性（Atomicity）：即事务是不可分割的最小工作单元，事务内的操作要么全做，要么全不做；

2、一致性（Consistency）：在事务执行前数据库的数据处于正确的状态，而事务执行完成后数据库的数据还是应该处于正确的状态，即数据完整性约束没有被破坏；如银行转帐，A转帐给B，必须保证A的钱一定转给B，一定不会出现A的钱转了但B没收到，否则数据库的数据就处于不一致（不正确）的状态。

3、隔离性（Isolation）：并发事务执行之间互不影响，在一个事务内部的操作对其他事务是不产生影响，这需要事务隔离级别来指定隔离性；

4、持久性（Durability）：事务一旦执行成功，它对数据库的数据的改变必须是永久的，不会因比如遇到系统故障或断电造成数据不一致或丢失。

1.3、隔离级别（isolation level）

隔离级别定义了事务与事务之间的隔离程度、隔离级别与并发性是互为矛盾的：隔离程度越高，数据库的并发性越差；隔离程度越低，数据库的并发性越好。

1.4、事务隔离级别并发现象

1、更新丢失（lost update）：

    当系统允许两个事务同时更新同一数据时，发生更新丢失。

         A事务读取User表中的id为1的记录（id=1，name=zhansan，age=20）

         B事务读取User表中的id为1的记录（id=1，name=zhansan，age=20）

         A事务将id为1的记录的name修改为lisi，提交事务

         B事务将id为1的记录的age修改22，提交事务

则A事务就会出现更新丢失

2、脏读（dirty read）

          当一个事务读取另一个事务尚未提交的修改时，产生脏读。

         A事务读取User表中的id为1的记录（id=1，name=zhansan，age=20）

         A事务将id为1的记录的name修改为lisi（id=1， name=lisi，age=20）

         B事务读取User表中的id为1的记录（id=1， name=lisi，age=20）

         此时A事务撤销更改，事务回滚（id=1，name=zhansan，age=20）

         由于A事务回滚了，数据库内不会有任何操作记录，那么B事务是何时、从哪里读取了错误数据根本无从查起。

3、非重复读（nonrepeatableread）

         同一查询在同一事务中多次进行，在此期间，由于其他事务提交了对数据的修改或删除，每次返回不同的结果。

         A事务读取某数据，这个数据已经被B事务读取，并做了修改或删除。所以这数据已经不是以前的数据。

4、幻像（phantom read）

          同一查询在同一事务中多次进行，由于其他提交事务所做的插入操作，虽然查询条件相同，每次返回的结果集却不同。

     A事务重复持行一个查询，由于其他提交事务所做的插入操作，返回不同的结果集，此时发生幻像读。

1.5、隔离级别和对应现象的空值情况

隔离级别	脏读	非重复读	幻读
未提交读	Y	Y	Y
提交读	N	Y	Y
可重复读	N	N	Y
序列化	N	N	N

1.6、数据库事务分为本地事务跟全局事务

本地事务：普通事务，独立一个数据库，能保证在该数据库上操作的ACID。

分布式事务：涉及两个或多个数据库源的事务，即跨越多台同类或异类数据库的事务（由每台数据库的本地事务组成的），分布式事务旨在保证这些本地事务的所有操作的ACID，使事务可以跨越多台数据库；

1.7、Java事务类型分为JDBC事务跟JTA事务

JDBC事务：即为上面说的数据库事务中的本地事务，通过connection对象控制管理。

JTA事务：JTA指Java事务API(JavaTransaction API)，是Java EE数据库事务规范， JTA只提供了事务管理接口，由应用程序服务器厂商（如WebSphere Application Server）提供实现，JTA事务比JDBC更强大，支持分布式事务。

1.8、Spring事务传播行为：有七大传播行为，也是在TransactionDefinition接口中定义。

PROPAGATION_REQUIRED：支持当前事务，如当前没有事务，则新建一个。

PROPAGATION_SUPPORTS：支持当前事务，如当前没有事务，则已非事务性执行（源码中提示有个注意点，看不太明白，留待后面考究）。

PROPAGATION_MANDATORY：支持当前事务，如当前没有事务，则抛出异常（强制一定要在一个已经存在的事务中执行，业务方法不可独自发起自己的事务）。

PROPAGATION_REQUIRES_NEW：始终新建一个事务，如当前原来有事务，则把原事务挂起。

PROPAGATION_NOT_SUPPORTED：不支持当前事务，始终已非事务性方式执行，如当前事务存在，挂起该事务。

PROPAGATION_NEVER：不支持当前事务；如果当前事务存在，则引发异常。

PROPAGATION_NESTED：如果当前事务存在，则在嵌套事务中执行，如果当前没有事务，则执行与 PROPAGATION_REQUIRED 类似的操作（注意：当应用到JDBC时，只适用JDBC 3.0以上驱动）。

1.9、Spring多数据源分布式事务spring+atomikos[jta]+druid+mybatis

spring3.0之后不再支持jtom[jta]了，第三方开源软件atomikos(http://www.atomikos.com/)来实现．

atomikos事务控制框架，其中看到有3种数据源，分别是，SimpleDataSourceBean,AtomikosDataSourceBean,AtomikosNonXADataSourceBean。

  a:SimpleDataSourceBean: 这个是最简单地数据源配置,需要配置XA驱动。

  b:AtomikosDataSourceBean:  分布式数据源,Atomikos实现的数据源，需要配置XA驱动，推荐此配置，可以配置连接池的信息。

  c:AtomikosNonXADataSourceBean: 非分布式数据源,该数据源配置需要普通JDBC的驱动，可以配置连接池：

  Atomikos支持XA(全局事务)和NON-XA(非全局事务)，NON-XA[nonxadatasource]效率高于XA.XA事务往往是包括多个数据源的全局事务，非XA是单个数据源的.

   XA连接是一个JTA事务中的参与者。XA连接不支持JDBC的自动提交特性。也就是说应用程序不必在xadatasource[XA]连接上调用Java.sql.Connection.commit()或java.sql.Connection.rollback()；而应用程序应该使用UserTransaction.begin(),UserTransaction.commit()和UserTransaction.rollback().

1、  创建两个数据库

1.1、创建第一个数据库multi-db1

    
    
CREATE DATABASE `multi-db1` DEFAULT CHARACTER SET utf8;
USE `multi-db1`;
DROP TABLE IF EXISTS `t_user`;

CREATE TABLE `t_user` (
`id` varchar( 100) DEFAULT NULL,
`name` varchar( 200) DEFAULT NULL,
`gender` varchar( 2) DEFAULT NULL,
`birthday` datetime DEFAULT NULL
) ENGINE= InnoDB DEFAULT CHARSET=utf8;
    
    

1.2、创建第二个数据库multi-db2

    
    
CREATE DATABASE `multi-db2` DEFAULT CHARACTER SET utf8;
USE `multi-db2`;
DROP TABLE IF EXISTS `t_user`;

CREATE TABLE `t_user` (
`id` varchar( 100) DEFAULT NULL,
`name` varchar( 200) DEFAULT NULL,
`gender` varchar( 2) DEFAULT NULL,
`birthday` datetime DEFAULT NULL
) ENGINE= InnoDB DEFAULT CHARSET=utf8;
    
    

2、  创建一个maven的项目类型为jar项目目录为

3、项目的POM文件pom.xml

    
    
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation= "http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0 </modelVersion>
<groupId>com.jyd.transaction </groupId>
<artifactId>DTransaction </artifactId>
<version>0.0.1-SNAPSHOT </version>

<dependencies>
<dependency>
<groupId>org.springframework </groupId>
<artifactId>spring-context </artifactId>
<version>4.2.5.RELEASE </version>
</dependency>
<dependency>
<groupId>org.springframework </groupId>
<artifactId>spring-test </artifactId>
<version>4.2.5.RELEASE </version>
</dependency>
<dependency>
<groupId>com.alibaba </groupId>
<artifactId>druid </artifactId>
<version>1.0.26 </version>
</dependency>
<dependency>
<groupId>mysql </groupId>
<artifactId>mysql-connector-java </artifactId>
<version>5.1.36 </version>
</dependency>
<dependency>
<groupId>org.slf4j </groupId>
<artifactId>slf4j-api </artifactId>
<version>1.7.12 </version>
</dependency>
<dependency>
<groupId>junit </groupId>
<artifactId>junit </artifactId>
<version>4.10 </version>
</dependency>

<!-- 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>
<dependency>
<groupId>org.aspectj </groupId>
<artifactId>aspectjrt </artifactId>
<version>1.8.0 </version>
</dependency>
<dependency>
<groupId>org.aspectj </groupId>
<artifactId>aspectjweaver </artifactId>
<version>1.8.0 </version>
</dependency>
<dependency>
<groupId>org.mybatis </groupId>
<artifactId>mybatis-spring </artifactId>
<version>1.3.0 </version>
</dependency>
<dependency>
<groupId>org.mybatis </groupId>
<artifactId>mybatis </artifactId>
<version>3.4.0 </version>
</dependency>
<dependency>
<groupId>org.springframework </groupId>
<artifactId>spring-jdbc </artifactId>
<version>4.2.5.RELEASE </version>
</dependency>

</dependencies>
<build>
<plugins>
<!-- 资源文件拷贝插件 -->
<plugin>
<groupId>org.apache.maven.plugins </groupId>
<artifactId>maven-resources-plugin </artifactId>
<version>2.7 </version>
<configuration>
<encoding>UTF-8 </encoding>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins </groupId>
<artifactId>maven-compiler-plugin </artifactId>
<configuration>
<source>1.6 </source>
<target>1.6 </target>
<encoding>UTF-8 </encoding>
</configuration>
</plugin>
</plugins>
</build>
</project>
    
    

4、配置数据源参数db.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=com.mysql.jdbc.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: //localhost:3306/multi-db1?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull
slave.jdbc.url=jdbc:mysql: //localhost:3306/multi-db2?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull
jdbc.username=root
jdbc.password= 123456
    
    

5、AtomikosDataSourceBean[XA(全局事务)]数据源配置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DB1-DB2数据源信息 </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}"</span>/&gt;</span> <span class="hljs-comment">&lt;!-- SQLErrorCodes loaded: [DB2, Derby, H2, HSQL, Informix, MS-SQL, MySQL, Oracle, PostgreSQL, Sybase, Hana] --&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="20"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">property</span> <span class="hljs-attr">name</span>=<span class="hljs-string">"poolSize"</span> <span class="hljs-attr">value</span>=<span class="hljs-string">"10"</span> /&gt;</span> </div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="21"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">property</span> <span class="hljs-attr">name</span>=<span class="hljs-string">"minPoolSize"</span> <span class="hljs-attr">value</span>=<span class="hljs-string">"10"</span>/&gt;</span> </div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="22"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">property</span> <span class="hljs-attr">name</span>=<span class="hljs-string">"maxPoolSize"</span> <span class="hljs-attr">value</span>=<span class="hljs-string">"30"</span>/&gt;</span> </div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="23"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">property</span> <span class="hljs-attr">name</span>=<span class="hljs-string">"borrowConnectionTimeout"</span> <span class="hljs-attr">value</span>=<span class="hljs-string">"60"</span>/&gt;</span> </div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="24"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">property</span> <span class="hljs-attr">name</span>=<span class="hljs-string">"reapTimeout"</span> <span class="hljs-attr">value</span>=<span class="hljs-string">"20"</span>/&gt;</span> </div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="25"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">property</span> <span class="hljs-attr">name</span>=<span class="hljs-string">"maxIdleTime"</span> <span class="hljs-attr">value</span>=<span class="hljs-string">"60"</span>/&gt;</span> </div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="26"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">property</span> <span class="hljs-attr">name</span>=<span class="hljs-string">"maintenanceInterval"</span> <span class="hljs-attr">value</span>=<span class="hljs-string">"60"</span>/&gt;</span> </div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="27"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">property</span> <span class="hljs-attr">name</span>=<span class="hljs-string">"loginTimeout"</span> <span class="hljs-attr">value</span>=<span class="hljs-string">"60"</span>/&gt;</span> </div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="28"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">property</span> <span class="hljs-attr">name</span>=<span class="hljs-string">"testQuery"</span> <span class="hljs-attr">value</span>=<span class="hljs-string">"${validationQuery}"/>
</bean>
<bean id="db1DataSource" parent="abstractXADataSource">
<property name="uniqueResourceName" value="DB1" />
<property name="xaProperties">
<props>
<prop key="driverClassName">${jdbc.driverClassName}<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="35"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">prop</span> <span class="hljs-attr">key</span>=<span class="hljs-string">"url"</span>&gt;</span>${master.jdbc.url} </prop>
<prop key="password">${jdbc.password}<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="37"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-comment">&lt;!-- &lt;prop key="user"&gt;${jdbc.username}</prop> --> <!-- mysql -->
<prop key="username">${jdbc.username}<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span> <span class="hljs-comment">&lt;!-- durid --&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="39"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">prop</span> <span class="hljs-attr">key</span>=<span class="hljs-string">"initialSize"</span>&gt;</span>0<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="40"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">prop</span> <span class="hljs-attr">key</span>=<span class="hljs-string">"maxActive"</span>&gt;</span>20<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span> <span class="hljs-comment">&lt;!-- 若不配置则代码执行"{dataSource-1} inited"此处停止 --&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="41"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">prop</span> <span class="hljs-attr">key</span>=<span class="hljs-string">"minIdle"</span>&gt;</span>0<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="42"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">prop</span> <span class="hljs-attr">key</span>=<span class="hljs-string">"maxWait"</span>&gt;</span>60000<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="43"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">prop</span> <span class="hljs-attr">key</span>=<span class="hljs-string">"validationQuery"</span>&gt;</span>${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="db2DataSource" parent="abstractXADataSource">
<property name="uniqueResourceName" value="DB2" />
<property name="xaProperties">
<props>
<prop key="driverClassName">${jdbc.driverClassName}<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="59"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">prop</span> <span class="hljs-attr">key</span>=<span class="hljs-string">"url"</span>&gt;</span>${slave.jdbc.url} </prop>
<prop key="password">${jdbc.password}<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="61"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-comment">&lt;!-- &lt;prop key="user"&gt;${jdbc.username}</prop> -->
<prop key="username">${jdbc.username}<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="63"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">prop</span> <span class="hljs-attr">key</span>=<span class="hljs-string">"initialSize"</span>&gt;</span>0<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="64"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">prop</span> <span class="hljs-attr">key</span>=<span class="hljs-string">"maxActive"</span>&gt;</span>20<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="65"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">prop</span> <span class="hljs-attr">key</span>=<span class="hljs-string">"minIdle"</span>&gt;</span>0<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="66"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">prop</span> <span class="hljs-attr">key</span>=<span class="hljs-string">"maxWait"</span>&gt;</span>60000<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="67"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">prop</span> <span class="hljs-attr">key</span>=<span class="hljs-string">"validationQuery"</span>&gt;</span>${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>
    
    

6、配置mybatis-config

         mybatis-config-db1.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="User" type="com.jyd.entity.User"/>
</typeAliases>
<mappers>
<mapper resource="com/jyd/xml/UserMapper.xml" />
</mappers>
</configuration>
    
    

mybatis-config-db2.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="UserInfo" type="com.jyd.entity.UserInfo"/>
</typeAliases>
<mappers>
<mapper resource="com/jyd/xml/UserInfoMapper.xml" />
</mappers>
</configuration>
    
    

7、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">
<bean id="db1SqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="configLocation" value="classpath:mybatis/mybatis-config-db1.xml" />
<property name="dataSource" ref="db1DataSource" />
</bean>

<bean id="db2SqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="configLocation" value="classpath:mybatis/mybatis-config-db2.xml" />
<property name="dataSource" ref="db2DataSource" />
</bean>
</beans>
    
    

8、Mapper的管理及注入，为mybatis的dao层mapper接口注入[绑定]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为不同的mapper注入sqlSessionFactory </description>
<!-- Mapper的管理及注入 -->
<bean id="userMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">
<property name="sqlSessionFactory" ref="db1SqlSessionFactory" />
<property name="mapperInterface" value="com.jyd.dao.UserMapper" />
</bean>

<bean id="userInfoMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">
<property name="sqlSessionFactory" ref="db2SqlSessionFactory" />
<property name="mapperInterface" value="com.jyd.dao.UserInfoMapper" />
</bean>
</beans>
    
    

9、atomikos事务配置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事务管理器 -->
<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 事务管理器 -->
<bean id="springTransactionManager" class="org.springframework.transaction.jta.JtaTransactionManager">
<property name="transactionManager" ref="atomikosTransactionManager" />
<property name="userTransaction" ref="atomikosUserTransaction" />
<!-- 必须设置，否则程序出现异常 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.jyd.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>
    
    

10、配置jta启动参数在jta.properties，最后追加详细

    
    
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
    
    

11、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 自动注册bean,并检查@Required,@Autowired的属性已被注入 -->
<context:component-scan base-package="com.jyd" />

<!-- 使用AspectJ方式配置AOP -->
<aop:aspectj-autoproxy />

<!-- 引入属性配置文件 -->
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:properties/db.properties" />
</bean>

<!--或 <context:property-placeholder location="classpath*:*.properties" /> -->
<import resource="datasource-context.xml"/>
<import resource="mapper-context.xml"/>
<import resource="mybatis-context.xml"/>
<import resource="transaction-context.xml"/>
</beans>
    
    

12、创建实体bean类（User.java|UserInfo.java）

User.java

    
    
package com.jyd.entity;

import java.io.Serializable;
import java.util.Date;

public class User implements Serializable {

private static final long serialVersionUID = - 5650864083291329775L;
private String id;
private String name;
private String gender;
private Date birthday;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
}
    
    

UserInfo.java

    
    
package com.jyd.entity;

import java.io.Serializable;
import java.util.Date;

public class UserInfo implements Serializable {

private static final long serialVersionUID = 7402046259459506152L;
private String id;
private String name;
private String gender;
private Date birthday;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
}
    
    

13、创建mybatis的mapper和dao接口（UserMapper.java|UserInfoMapper.java）和对应mapper文件

UserMapper.java

    
    
package com.jyd.dao;

import org.springframework.stereotype.Repository;

import com.jyd.entity.User;

@Repository
public interface UserMapper {
int insert(User record);
}
    
    

UserInfoMapper.java

    
    
package com.jyd.dao;

import org.springframework.stereotype.Repository;

import com.jyd.entity.UserInfo;

@Repository
public interface UserInfoMapper {
int insert(UserInfo record);
}
    
    

UserMapper.xml

    
    
<?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.jyd.dao.UserMapper" >

<insert id="insert" parameterType="com.jyd.entity.User" >
insert into t_user (id, name, gender, birthday)
values (#{id}, #{name}, #{gender},#{birthday})
</insert>
</mapper>
    
    

UserInfoMapper.xml

    
    
<?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.jyd.dao.UserInfoMapper" >

<insert id="insert" parameterType="com.jyd.entity.UserInfo" >
insert into t_user (id, name, gender, birthday)
values (#{id}, #{name}, #{gender},#{birthday})
</insert>
</mapper>
    
    

14、创建UserService服务层和实现（UserService.java|UserServiceImpl.java）

UserService.java

    
    
package com.jyd.service;

import com.jyd.entity.User;
import com.jyd.entity.UserInfo;

public interface UserService {
boolean registerUser(User user, UserInfo userInfo);
}
    
    

UserServiceImpl.java

    
    
package com.jyd.service.impl;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.jyd.dao.UserInfoMapper;
import com.jyd.dao.UserMapper;
import com.jyd.entity.User;
import com.jyd.entity.UserInfo;
import com.jyd.service.UserService;

@Service( "userService")
public class UserServiceImpl implements UserService {

//log
private static final Logger LOG = LoggerFactory.getLogger(UserServiceImpl.class);

@Autowired
private UserMapper userMapper;
@Autowired
private UserInfoMapper userInfoMapper;
@Override
public boolean registerUser(User user, UserInfo userInfo) {

boolean resRegister = false;
try {
if(userMapper.insert(user) != 1){
throw new RuntimeException( "注册用户:User表数据插入不一致.");
}
if(userInfoMapper.insert(userInfo) != 1){
throw new RuntimeException( "注册用户:UserInfo表数据插入不一致.");
}
resRegister = true;
} catch (Exception e) {
LOG.info( "注册用户:数据库保存异常." + e.getMessage(), e);
throw new RuntimeException( "注册用户:数据库保存异常");
}
return resRegister;
}
}
    
    

15、Junit测试代码

    
    
package com.jyd.test;

import java.util.Calendar;

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.AbstractJUnit4SpringContextTests;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import com.jyd.entity.User;
import com.jyd.entity.UserInfo;
import com.jyd.service.UserService;


@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "classpath:spring-context.xml"})
public class JTATest extends AbstractJUnit4SpringContextTests{

//log
private static final Logger LOG = LoggerFactory.getLogger(JTATest.class);

@Autowired
private UserService userService;

@Test
public void testRegister(){

User user = new User();
user.setId( "1");
user.setName( "张三");
user.setGender( "男");
user.setBirthday(Calendar.getInstance().getTime());

UserInfo userInfo = new UserInfo();
userInfo.setId( "1");
userInfo.setName( "张三");
userInfo.setGender( "男");
userInfo.setBirthday(Calendar.getInstance().getTime());

if(userService.registerUser(user, userInfo)){
LOG.info( "##用户注册成功");
} else{
LOG.info( "##用户注册失败");
}
}
}
    
    

可以做异常测试，其中如何方法出错了，都会回滚事务

            </div>

1.1、事务的定义：

事务是指多个操作单元组成的合集，多个单元操作是整体不可分割的，要么都操作不成功，要么都成功。其必须遵循四个原则（ACID）

1.2、事务四个原则（ACID）

1、原子性（Atomicity）：即事务是不可分割的最小工作单元，事务内的操作要么全做，要么全不做；

2、一致性（Consistency）：在事务执行前数据库的数据处于正确的状态，而事务执行完成后数据库的数据还是应该处于正确的状态，即数据完整性约束没有被破坏；如银行转帐，A转帐给B，必须保证A的钱一定转给B，一定不会出现A的钱转了但B没收到，否则数据库的数据就处于不一致（不正确）的状态。

3、隔离性（Isolation）：并发事务执行之间互不影响，在一个事务内部的操作对其他事务是不产生影响，这需要事务隔离级别来指定隔离性；

4、持久性（Durability）：事务一旦执行成功，它对数据库的数据的改变必须是永久的，不会因比如遇到系统故障或断电造成数据不一致或丢失。

1.3、隔离级别（isolation level）

隔离级别定义了事务与事务之间的隔离程度、隔离级别与并发性是互为矛盾的：隔离程度越高，数据库的并发性越差；隔离程度越低，数据库的并发性越好。

1.4、事务隔离级别并发现象

1、更新丢失（lost update）：

    当系统允许两个事务同时更新同一数据时，发生更新丢失。

         A事务读取User表中的id为1的记录（id=1，name=zhansan，age=20）

         B事务读取User表中的id为1的记录（id=1，name=zhansan，age=20）

         A事务将id为1的记录的name修改为lisi，提交事务

         B事务将id为1的记录的age修改22，提交事务

则A事务就会出现更新丢失

2、脏读（dirty read）

          当一个事务读取另一个事务尚未提交的修改时，产生脏读。

         A事务读取User表中的id为1的记录（id=1，name=zhansan，age=20）

         A事务将id为1的记录的name修改为lisi（id=1， name=lisi，age=20）

         B事务读取User表中的id为1的记录（id=1， name=lisi，age=20）

         此时A事务撤销更改，事务回滚（id=1，name=zhansan，age=20）

         由于A事务回滚了，数据库内不会有任何操作记录，那么B事务是何时、从哪里读取了错误数据根本无从查起。

3、非重复读（nonrepeatableread）

         同一查询在同一事务中多次进行，在此期间，由于其他事务提交了对数据的修改或删除，每次返回不同的结果。

         A事务读取某数据，这个数据已经被B事务读取，并做了修改或删除。所以这数据已经不是以前的数据。

4、幻像（phantom read）

          同一查询在同一事务中多次进行，由于其他提交事务所做的插入操作，虽然查询条件相同，每次返回的结果集却不同。

     A事务重复持行一个查询，由于其他提交事务所做的插入操作，返回不同的结果集，此时发生幻像读。

1.5、隔离级别和对应现象的空值情况

隔离级别	脏读	非重复读	幻读
未提交读	Y	Y	Y
提交读	N	Y	Y
可重复读	N	N	Y
序列化	N	N	N

1.6、数据库事务分为本地事务跟全局事务

本地事务：普通事务，独立一个数据库，能保证在该数据库上操作的ACID。

分布式事务：涉及两个或多个数据库源的事务，即跨越多台同类或异类数据库的事务（由每台数据库的本地事务组成的），分布式事务旨在保证这些本地事务的所有操作的ACID，使事务可以跨越多台数据库；

1.7、Java事务类型分为JDBC事务跟JTA事务

JDBC事务：即为上面说的数据库事务中的本地事务，通过connection对象控制管理。

JTA事务：JTA指Java事务API(JavaTransaction API)，是Java EE数据库事务规范， JTA只提供了事务管理接口，由应用程序服务器厂商（如WebSphere Application Server）提供实现，JTA事务比JDBC更强大，支持分布式事务。

1.8、Spring事务传播行为：有七大传播行为，也是在TransactionDefinition接口中定义。

PROPAGATION_REQUIRED：支持当前事务，如当前没有事务，则新建一个。

PROPAGATION_SUPPORTS：支持当前事务，如当前没有事务，则已非事务性执行（源码中提示有个注意点，看不太明白，留待后面考究）。

PROPAGATION_MANDATORY：支持当前事务，如当前没有事务，则抛出异常（强制一定要在一个已经存在的事务中执行，业务方法不可独自发起自己的事务）。

PROPAGATION_REQUIRES_NEW：始终新建一个事务，如当前原来有事务，则把原事务挂起。

PROPAGATION_NOT_SUPPORTED：不支持当前事务，始终已非事务性方式执行，如当前事务存在，挂起该事务。

PROPAGATION_NEVER：不支持当前事务；如果当前事务存在，则引发异常。

PROPAGATION_NESTED：如果当前事务存在，则在嵌套事务中执行，如果当前没有事务，则执行与 PROPAGATION_REQUIRED 类似的操作（注意：当应用到JDBC时，只适用JDBC 3.0以上驱动）。

1.9、Spring多数据源分布式事务spring+atomikos[jta]+druid+mybatis

spring3.0之后不再支持jtom[jta]了，第三方开源软件atomikos(http://www.atomikos.com/)来实现．

atomikos事务控制框架，其中看到有3种数据源，分别是，SimpleDataSourceBean,AtomikosDataSourceBean,AtomikosNonXADataSourceBean。

  a:SimpleDataSourceBean: 这个是最简单地数据源配置,需要配置XA驱动。

  b:AtomikosDataSourceBean:  分布式数据源,Atomikos实现的数据源，需要配置XA驱动，推荐此配置，可以配置连接池的信息。

  c:AtomikosNonXADataSourceBean: 非分布式数据源,该数据源配置需要普通JDBC的驱动，可以配置连接池：

  Atomikos支持XA(全局事务)和NON-XA(非全局事务)，NON-XA[nonxadatasource]效率高于XA.XA事务往往是包括多个数据源的全局事务，非XA是单个数据源的.

   XA连接是一个JTA事务中的参与者。XA连接不支持JDBC的自动提交特性。也就是说应用程序不必在xadatasource[XA]连接上调用Java.sql.Connection.commit()或java.sql.Connection.rollback()；而应用程序应该使用UserTransaction.begin(),UserTransaction.commit()和UserTransaction.rollback().

1、  创建两个数据库

1.1、创建第一个数据库multi-db1

  
  
CREATE DATABASE `multi-db1` DEFAULT CHARACTER SET utf8;
USE `multi-db1`;
DROP TABLE IF EXISTS `t_user`;

CREATE TABLE `t_user` (
`id` varchar( 100) DEFAULT NULL,
`name` varchar( 200) DEFAULT NULL,
`gender` varchar( 2) DEFAULT NULL,
`birthday` datetime DEFAULT NULL
) ENGINE= InnoDB DEFAULT CHARSET=utf8;
  
  

1.2、创建第二个数据库multi-db2

  
  
CREATE DATABASE `multi-db2` DEFAULT CHARACTER SET utf8;
USE `multi-db2`;
DROP TABLE IF EXISTS `t_user`;

CREATE TABLE `t_user` (
`id` varchar( 100) DEFAULT NULL,
`name` varchar( 200) DEFAULT NULL,
`gender` varchar( 2) DEFAULT NULL,
`birthday` datetime DEFAULT NULL
) ENGINE= InnoDB DEFAULT CHARSET=utf8;
  
  

2、  创建一个maven的项目类型为jar项目目录为

3、项目的POM文件pom.xml

  
  
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation= "http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
<modelVersion>4.0.0 </modelVersion>
<groupId>com.jyd.transaction </groupId>
<artifactId>DTransaction </artifactId>
<version>0.0.1-SNAPSHOT </version>

<dependencies>
<dependency>
<groupId>org.springframework </groupId>
<artifactId>spring-context </artifactId>
<version>4.2.5.RELEASE </version>
</dependency>
<dependency>
<groupId>org.springframework </groupId>
<artifactId>spring-test </artifactId>
<version>4.2.5.RELEASE </version>
</dependency>
<dependency>
<groupId>com.alibaba </groupId>
<artifactId>druid </artifactId>
<version>1.0.26 </version>
</dependency>
<dependency>
<groupId>mysql </groupId>
<artifactId>mysql-connector-java </artifactId>
<version>5.1.36 </version>
</dependency>
<dependency>
<groupId>org.slf4j </groupId>
<artifactId>slf4j-api </artifactId>
<version>1.7.12 </version>
</dependency>
<dependency>
<groupId>junit </groupId>
<artifactId>junit </artifactId>
<version>4.10 </version>
</dependency>

<!-- 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>
<dependency>
<groupId>org.aspectj </groupId>
<artifactId>aspectjrt </artifactId>
<version>1.8.0 </version>
</dependency>
<dependency>
<groupId>org.aspectj </groupId>
<artifactId>aspectjweaver </artifactId>
<version>1.8.0 </version>
</dependency>
<dependency>
<groupId>org.mybatis </groupId>
<artifactId>mybatis-spring </artifactId>
<version>1.3.0 </version>
</dependency>
<dependency>
<groupId>org.mybatis </groupId>
<artifactId>mybatis </artifactId>
<version>3.4.0 </version>
</dependency>
<dependency>
<groupId>org.springframework </groupId>
<artifactId>spring-jdbc </artifactId>
<version>4.2.5.RELEASE </version>
</dependency>

</dependencies>
<build>
<plugins>
<!-- 资源文件拷贝插件 -->
<plugin>
<groupId>org.apache.maven.plugins </groupId>
<artifactId>maven-resources-plugin </artifactId>
<version>2.7 </version>
<configuration>
<encoding>UTF-8 </encoding>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins </groupId>
<artifactId>maven-compiler-plugin </artifactId>
<configuration>
<source>1.6 </source>
<target>1.6 </target>
<encoding>UTF-8 </encoding>
</configuration>
</plugin>
</plugins>
</build>
</project>
  
  

4、配置数据源参数db.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=com.mysql.jdbc.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: //localhost:3306/multi-db1?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull
slave.jdbc.url=jdbc:mysql: //localhost:3306/multi-db2?useUnicode=true&characterEncoding=UTF-8&zeroDateTimeBehavior=convertToNull
jdbc.username=root
jdbc.password= 123456
  
  

5、AtomikosDataSourceBean[XA(全局事务)]数据源配置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DB1-DB2数据源信息 </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}"</span>/&gt;</span> <span class="hljs-comment">&lt;!-- SQLErrorCodes loaded: [DB2, Derby, H2, HSQL, Informix, MS-SQL, MySQL, Oracle, PostgreSQL, Sybase, Hana] --&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="20"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">property</span> <span class="hljs-attr">name</span>=<span class="hljs-string">"poolSize"</span> <span class="hljs-attr">value</span>=<span class="hljs-string">"10"</span> /&gt;</span> </div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="21"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">property</span> <span class="hljs-attr">name</span>=<span class="hljs-string">"minPoolSize"</span> <span class="hljs-attr">value</span>=<span class="hljs-string">"10"</span>/&gt;</span> </div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="22"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">property</span> <span class="hljs-attr">name</span>=<span class="hljs-string">"maxPoolSize"</span> <span class="hljs-attr">value</span>=<span class="hljs-string">"30"</span>/&gt;</span> </div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="23"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">property</span> <span class="hljs-attr">name</span>=<span class="hljs-string">"borrowConnectionTimeout"</span> <span class="hljs-attr">value</span>=<span class="hljs-string">"60"</span>/&gt;</span> </div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="24"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">property</span> <span class="hljs-attr">name</span>=<span class="hljs-string">"reapTimeout"</span> <span class="hljs-attr">value</span>=<span class="hljs-string">"20"</span>/&gt;</span> </div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="25"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">property</span> <span class="hljs-attr">name</span>=<span class="hljs-string">"maxIdleTime"</span> <span class="hljs-attr">value</span>=<span class="hljs-string">"60"</span>/&gt;</span> </div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="26"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">property</span> <span class="hljs-attr">name</span>=<span class="hljs-string">"maintenanceInterval"</span> <span class="hljs-attr">value</span>=<span class="hljs-string">"60"</span>/&gt;</span> </div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="27"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">property</span> <span class="hljs-attr">name</span>=<span class="hljs-string">"loginTimeout"</span> <span class="hljs-attr">value</span>=<span class="hljs-string">"60"</span>/&gt;</span> </div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="28"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">property</span> <span class="hljs-attr">name</span>=<span class="hljs-string">"testQuery"</span> <span class="hljs-attr">value</span>=<span class="hljs-string">"${validationQuery}"/>
</bean>
<bean id="db1DataSource" parent="abstractXADataSource">
<property name="uniqueResourceName" value="DB1" />
<property name="xaProperties">
<props>
<prop key="driverClassName">${jdbc.driverClassName}<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="35"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">prop</span> <span class="hljs-attr">key</span>=<span class="hljs-string">"url"</span>&gt;</span>${master.jdbc.url} </prop>
<prop key="password">${jdbc.password}<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="37"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-comment">&lt;!-- &lt;prop key="user"&gt;${jdbc.username}</prop> --> <!-- mysql -->
<prop key="username">${jdbc.username}<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span> <span class="hljs-comment">&lt;!-- durid --&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="39"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">prop</span> <span class="hljs-attr">key</span>=<span class="hljs-string">"initialSize"</span>&gt;</span>0<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="40"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">prop</span> <span class="hljs-attr">key</span>=<span class="hljs-string">"maxActive"</span>&gt;</span>20<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span> <span class="hljs-comment">&lt;!-- 若不配置则代码执行"{dataSource-1} inited"此处停止 --&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="41"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">prop</span> <span class="hljs-attr">key</span>=<span class="hljs-string">"minIdle"</span>&gt;</span>0<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="42"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">prop</span> <span class="hljs-attr">key</span>=<span class="hljs-string">"maxWait"</span>&gt;</span>60000<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="43"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">prop</span> <span class="hljs-attr">key</span>=<span class="hljs-string">"validationQuery"</span>&gt;</span>${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="db2DataSource" parent="abstractXADataSource">
<property name="uniqueResourceName" value="DB2" />
<property name="xaProperties">
<props>
<prop key="driverClassName">${jdbc.driverClassName}<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="59"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">prop</span> <span class="hljs-attr">key</span>=<span class="hljs-string">"url"</span>&gt;</span>${slave.jdbc.url} </prop>
<prop key="password">${jdbc.password}<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="61"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-comment">&lt;!-- &lt;prop key="user"&gt;${jdbc.username}</prop> -->
<prop key="username">${jdbc.username}<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="63"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">prop</span> <span class="hljs-attr">key</span>=<span class="hljs-string">"initialSize"</span>&gt;</span>0<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="64"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">prop</span> <span class="hljs-attr">key</span>=<span class="hljs-string">"maxActive"</span>&gt;</span>20<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="65"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">prop</span> <span class="hljs-attr">key</span>=<span class="hljs-string">"minIdle"</span>&gt;</span>0<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="66"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">prop</span> <span class="hljs-attr">key</span>=<span class="hljs-string">"maxWait"</span>&gt;</span>60000<span class="hljs-tag">&lt;/<span class="hljs-name">prop</span>&gt;</span></div></div></li><li><div class="hljs-ln-numbers"><div class="hljs-ln-line hljs-ln-n" data-line-number="67"></div></div><div class="hljs-ln-code"><div class="hljs-ln-line"> <span class="hljs-tag">&lt;<span class="hljs-name">prop</span> <span class="hljs-attr">key</span>=<span class="hljs-string">"validationQuery"</span>&gt;</span>${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>
  
  

6、配置mybatis-config

         mybatis-config-db1.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="User" type="com.jyd.entity.User"/>
</typeAliases>
<mappers>
<mapper resource="com/jyd/xml/UserMapper.xml" />
</mappers>
</configuration>
  
  

mybatis-config-db2.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="UserInfo" type="com.jyd.entity.UserInfo"/>
</typeAliases>
<mappers>
<mapper resource="com/jyd/xml/UserInfoMapper.xml" />
</mappers>
</configuration>
  
  

7、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">
<bean id="db1SqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="configLocation" value="classpath:mybatis/mybatis-config-db1.xml" />
<property name="dataSource" ref="db1DataSource" />
</bean>

<bean id="db2SqlSessionFactory" class="org.mybatis.spring.SqlSessionFactoryBean">
<property name="configLocation" value="classpath:mybatis/mybatis-config-db2.xml" />
<property name="dataSource" ref="db2DataSource" />
</bean>
</beans>
  
  

8、Mapper的管理及注入，为mybatis的dao层mapper接口注入[绑定]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为不同的mapper注入sqlSessionFactory </description>
<!-- Mapper的管理及注入 -->
<bean id="userMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">
<property name="sqlSessionFactory" ref="db1SqlSessionFactory" />
<property name="mapperInterface" value="com.jyd.dao.UserMapper" />
</bean>

<bean id="userInfoMapper" class="org.mybatis.spring.mapper.MapperFactoryBean">
<property name="sqlSessionFactory" ref="db2SqlSessionFactory" />
<property name="mapperInterface" value="com.jyd.dao.UserInfoMapper" />
</bean>
</beans>
  
  

9、atomikos事务配置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事务管理器 -->
<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 事务管理器 -->
<bean id="springTransactionManager" class="org.springframework.transaction.jta.JtaTransactionManager">
<property name="transactionManager" ref="atomikosTransactionManager" />
<property name="userTransaction" ref="atomikosUserTransaction" />
<!-- 必须设置，否则程序出现异常 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.jyd.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>
  
  

10、配置jta启动参数在jta.properties，最后追加详细

  
  
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
  
  

11、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 自动注册bean,并检查@Required,@Autowired的属性已被注入 -->
<context:component-scan base-package="com.jyd" />

<!-- 使用AspectJ方式配置AOP -->
<aop:aspectj-autoproxy />

<!-- 引入属性配置文件 -->
<bean id="propertyConfigurer" class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
<property name="location" value="classpath:properties/db.properties" />
</bean>

<!--或 <context:property-placeholder location="classpath*:*.properties" /> -->
<import resource="datasource-context.xml"/>
<import resource="mapper-context.xml"/>
<import resource="mybatis-context.xml"/>
<import resource="transaction-context.xml"/>
</beans>
  
  

12、创建实体bean类（User.java|UserInfo.java）

User.java

  
  
package com.jyd.entity;

import java.io.Serializable;
import java.util.Date;

public class User implements Serializable {

private static final long serialVersionUID = - 5650864083291329775L;
private String id;
private String name;
private String gender;
private Date birthday;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
}
  
  

UserInfo.java

  
  
package com.jyd.entity;

import java.io.Serializable;
import java.util.Date;

public class UserInfo implements Serializable {

private static final long serialVersionUID = 7402046259459506152L;
private String id;
private String name;
private String gender;
private Date birthday;
public String getId() {
return id;
}
public void setId(String id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public String getGender() {
return gender;
}
public void setGender(String gender) {
this.gender = gender;
}
public Date getBirthday() {
return birthday;
}
public void setBirthday(Date birthday) {
this.birthday = birthday;
}
}
  
  

13、创建mybatis的mapper和dao接口（UserMapper.java|UserInfoMapper.java）和对应mapper文件

UserMapper.java

  
  
package com.jyd.dao;

import org.springframework.stereotype.Repository;

import com.jyd.entity.User;

@Repository
public interface UserMapper {
int insert(User record);
}
  
  

UserInfoMapper.java

  
  
package com.jyd.dao;

import org.springframework.stereotype.Repository;

import com.jyd.entity.UserInfo;

@Repository
public interface UserInfoMapper {
int insert(UserInfo record);
}
  
  

UserMapper.xml

  
  
<?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.jyd.dao.UserMapper" >

<insert id="insert" parameterType="com.jyd.entity.User" >
insert into t_user (id, name, gender, birthday)
values (#{id}, #{name}, #{gender},#{birthday})
</insert>
</mapper>
  
  

UserInfoMapper.xml

  
  
<?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.jyd.dao.UserInfoMapper" >

<insert id="insert" parameterType="com.jyd.entity.UserInfo" >
insert into t_user (id, name, gender, birthday)
values (#{id}, #{name}, #{gender},#{birthday})
</insert>
</mapper>
  
  

14、创建UserService服务层和实现（UserService.java|UserServiceImpl.java）

UserService.java

  
  
package com.jyd.service;

import com.jyd.entity.User;
import com.jyd.entity.UserInfo;

public interface UserService {
boolean registerUser(User user, UserInfo userInfo);
}
  
  

UserServiceImpl.java

  
  
package com.jyd.service.impl;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import com.jyd.dao.UserInfoMapper;
import com.jyd.dao.UserMapper;
import com.jyd.entity.User;
import com.jyd.entity.UserInfo;
import com.jyd.service.UserService;

@Service( "userService")
public class UserServiceImpl implements UserService {

//log
private static final Logger LOG = LoggerFactory.getLogger(UserServiceImpl.class);

@Autowired
private UserMapper userMapper;
@Autowired
private UserInfoMapper userInfoMapper;
@Override
public boolean registerUser(User user, UserInfo userInfo) {

boolean resRegister = false;
try {
if(userMapper.insert(user) != 1){
throw new RuntimeException( "注册用户:User表数据插入不一致.");
}
if(userInfoMapper.insert(userInfo) != 1){
throw new RuntimeException( "注册用户:UserInfo表数据插入不一致.");
}
resRegister = true;
} catch (Exception e) {
LOG.info( "注册用户:数据库保存异常." + e.getMessage(), e);
throw new RuntimeException( "注册用户:数据库保存异常");
}
return resRegister;
}
}
  
  

15、Junit测试代码

  
  
package com.jyd.test;

import java.util.Calendar;

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.AbstractJUnit4SpringContextTests;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import com.jyd.entity.User;
import com.jyd.entity.UserInfo;
import com.jyd.service.UserService;


@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "classpath:spring-context.xml"})
public class JTATest extends AbstractJUnit4SpringContextTests{

//log
private static final Logger LOG = LoggerFactory.getLogger(JTATest.class);

@Autowired
private UserService userService;

@Test
public void testRegister(){

User user = new User();
user.setId( "1");
user.setName( "张三");
user.setGender( "男");
user.setBirthday(Calendar.getInstance().getTime());

UserInfo userInfo = new UserInfo();
userInfo.setId( "1");
userInfo.setName( "张三");
userInfo.setGender( "男");
userInfo.setBirthday(Calendar.getInstance().getTime());

if(userService.registerUser(user, userInfo)){
LOG.info( "##用户注册成功");
} else{
LOG.info( "##用户注册失败");
}
}
}
  
  

可以做异常测试，其中如何方法出错了，都会回滚事务

            </div>