Spring跨库事务JOTM

添加配置文件ApplicationContext-jotm.xml到src下：

 

<?xml version="1.0" encoding="UTF-8"?>  
<beans xmlns="http://www.springframework.org/schema/beans"  
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd">  
    <!-- XA Datasource -->  
    <bean id="datasource1" class="com.atomikos.jdbc.SimpleDataSourceBean" init-method="init" destroy-method="close">     
        <property name="uniqueResourceName">     
            <value>mysql/main</value>     
        </property>     
        <property name="xaDataSourceClassName">     
            <value>com.mysql.jdbc.jdbc2.optional.MysqlXADataSource</value>     
        </property>     
        <property name="xaDataSourceProperties">     
            <value>URL=jdbc:mysql://192.168.0.229:3306/hdb;user=root;password=root</value>     
        </property>     
        <property name="exclusiveConnectionMode">     
            <value>true</value>     
        </property>     
        <property name="connectionPoolSize">     
            <value>3</value>     
        </property>     
        <property name="validatingQuery">     
            <value>SELECT 1</value>     
        </property>     
    </bean>  
      
    <bean id="datasource2" class="com.atomikos.jdbc.SimpleDataSourceBean" init-method="init" destroy-method="close">     
        <property name="uniqueResourceName">     
            <value>mysql/news</value>  
        </property>     
        <property name="xaDataSourceClassName">     
            <value>com.mysql.jdbc.jdbc2.optional.MysqlXADataSource</value>     
        </property>  
        <property name="xaDataSourceProperties">     
            <value>URL=jdbc:mysql://192.168.0.229:3306/hdb2;user=root;password=root</value>     
        </property>     
        <property name="exclusiveConnectionMode">     
            <value>true</value>     
        </property>     
        <property name="connectionPoolSize">     
            <value>3</value>     
        </property>     
        <property name="validatingQuery">     
            <value>SELECT 1</value>     
        </property>     
    </bean>  
      
    <bean id="template1" class="org.springframework.jdbc.core.JdbcTemplate">  
        <property name="dataSource" ref="datasource1" />  
    </bean>  
      
    <bean id="template2" class="org.springframework.jdbc.core.JdbcTemplate">  
        <property name="dataSource" ref="datasource2" />  
    </bean>  
          
    <bean id="atomikosTransactionManager" class="com.atomikos.icatch.jta.UserTransactionManager" init-method="init" destroy-method="close">  
        <property name="forceShutdown"><value>true</value></property>  
    </bean>  
      
    <bean id="atomikosUserTransaction" class="com.atomikos.icatch.jta.UserTransactionImp">  
        <property name="transactionTimeout" value="300"/>   
    </bean>  
  
    <bean id="springTransactionManager" class="org.springframework.transaction.jta.JtaTransactionManager">  
        <property name="transactionManager"><ref bean="atomikosTransactionManager"  /></property>  
        <property name="userTransaction"><ref bean="atomikosUserTransaction"  /></property>  
    </bean>  
      
    <bean id="dao1" class="test.UserDao1">  
        <property name="jdbcTemplate">  
            <ref bean="template1"></ref>  
        </property>  
    </bean>  
      
    <bean id="dao2" class="test.UserDao2">  
        <property name="jdbcTemplate">  
            <ref bean="template2"></ref>  
        </property>  
    </bean>  
    <!-- -->  
    <bean id="userServiceTarget" class="test.UserServiceImpl">  
        <property name="dao1" ref="dao1"/>  
        <property name="dao2" ref="dao2"/>  
    </bean>  
      
    <bean id="userTest" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean">      
        <property name="transactionManager">  
            <ref bean="springTransactionManager"/>  
        </property>      
        <property name="target">  
            <ref bean="userServiceTarget"/>  
        </property>  
        <property name="transactionAttributes">          
            <props>  
                <prop key="insert*">PROPAGATION_REQUIRED,-Exception</prop>              
            </props>  
        </property>  
    </bean>  
</beans>  

carol.properties放在src下：

 

carol.start.jndi=false            
carol.start.ns=false     
carol.jndi.java.naming.factory.url.pkgs=org.apache.naming

 jta.properties也放在src下：

 

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

 到此配置成功，下面是测试

 Userdao1

 

public class UserDao1 extends JdbcDaoSupport {  
    public void insertData(String id, String name) {  
    	String sxqlString = "insert into xa_test(id,name) values('" + id + "','" + name + "')";
    	System.out.println("打印sql:  "+sxqlString);
        getJdbcTemplate().execute(sxqlString);  
    }  
}  

 Userdao2

 

public class UserDao2 extends JdbcDaoSupport  
{  
    public void insertData(String id,String name){  
    	String sxqlString = "insert into xa_test(id,name) values('"+ id +"','"+name+"')";
    	System.out.println("打印sql:  "+sxqlString);
        getJdbcTemplate().execute(sxqlString);  
    }  
}  

 UserService

 

 

public interface UserService  
{  
    public void insertBothDatabase(String id,String name) throws Exception;  
    public void insert1Database(String id, String name)throws Exception;
    public void insert2Database(String id, String name)throws Exception;
} 

 UserServiceImpl

 

@Transactional
public class UserServiceImpl implements UserService  
{  
    private UserDao1 dao1;  
    private UserDao2 dao2;  
    public void insertBothDatabase(String id, String name) throws Exception { 
    	
        dao1.insertData(id, name);  
        dao2.insertData(id, name);  
    }  
    public void insert1Database(String id, String name) throws Exception {  
        dao1.insertData(id, name);  
    }  
    public void insert2Database(String id, String name) throws Exception {  
        dao2.insertData(id, name);  
    }  
    public UserDao1 getDao1() {  
        return dao1;  
    }  
    public void setDao1(UserDao1 dao1) {  
        this.dao1 = dao1;  
    }  
    public UserDao2 getDao2() {  
        return dao2;  
    }  
    public void setDao2(UserDao2 dao2) {  
        this.dao2 = dao2;  
    }  
} 

 main方法测试，注意main方法的测试需要添加上相应的jar：

 

		ApplicationContext ctx = new FileSystemXmlApplicationContext(
				"classpath:ApplicationContext-jotm.xml");
		//　多库userTest  // 库2 userTest2
		UserService ut = (UserService) ctx.getBean("userTest2");
		try {
			//ut.insertBothDatabase("2", "11111111112222");
			String s = "111111111122222222223333333333";
			System.out.println(s.length());
			//ut.insertBothDatabase("3", s);
			//ut.insert2Database("2", "22222test");// 单独操作数据库2
		} catch (Exception e) {
			System.out.println("跨库事务回滚，两个库都未插入数据");
		} finally {
			System.out.println("结束");
		}

 而WEB服务器环境中可以用Action测试，超链接如下：

 

     	<br/><a href =  "/hpr/hcinfo/Com_showinfo.action?sid=ku2">只向库2添加数据</a>
  	<br/><a href =  "/hpr/hcinfo/Com_showinfo.action?sid=asdf">忘两个库都添加数据，都不是非法数据</a>
  	<br/><a href =  "/hpr/hcinfo/Com_showinfo.action?sid=yigefeifafa">忘两个库添加数据，符合库1添加数据要求，对库2是非法数据</a>

 测试代码：

 

ApplicationContext ctx = new FileSystemXmlApplicationContext(
		"classpath:ApplicationContext-jotm.xml");
		//　多库userTest  // 库2 userTest2
		String a="userTest";
		boolean boo = sid.equals("ku2");
		if (boo) {
			a = a+"2";
		}
		UserService ut = (UserService) ctx.getBean(a);
		try {
			//ut.insertBothDatabase("2", "11111111112222");
			String s = "111111111122222";
			if(boo){
				ut.insert2Database("2", s);// 单独操作数据库2
			}else{
				if(sid.equals("asdf")){
					ut.insertBothDatabase("3", s);
				}else{
					// 忘两个数据库插入非法数据，对库1符合要求，库2不符合要求
					ut.insertBothDatabase("3", s + s );
				}
			}
			//
		} catch (Exception e) {
			System.out.println("跨库事务回滚，两个库都未插入数据");
		} finally {
			System.out.println("结束");
		}

 

WEB服务器是tomcat，一开始我把所有的jotm的jar都放进来啦，但是我发现我一个一个去了之后都丝毫不影响。到spring的jar包一看，spring-tx-2.5.6.jar竟然有支持JTOM的类，org.springframework.transaction.jta.JotmFactoryBean.class 遂恍然大悟，Spring真是强大无比。所以我没有添加任何的其他的jar。两个数据库的表都是xa_test（id,name）不同的是库1的name长度为40,而库2的长度为20. 两个库同事操作的时候如果其中一个库不符合要求，两个库的操作都不执行。这也是所谓的跨库事务。