Mybatis整合Spring配置事务无效问题 ： 配置报错 

现象：
在Service中有两个方法doTransaction（调用更新方法A、B，在A和B之间抛出RuntimeEx）和callTransaction。callTransaction调用doTransaction。且仅有doTransaction配置上了事务，callTransaction方法不处理任何异常。
在controller中单独调用doTransaction，有异常A是可以回滚的，但是如果在controller中调用callTransaction，doTransaction抛出异常直到controller，发现doTransaction方法中的A方法没有回滚。事务传波机制配置为REQUIRED

配置如下：
spring-mybatis.xml

<!-- 拦截器方式配置事物 --> <tx:advice id="transactionAdvice" transaction-manager="transactionManager"> <tx:attributes> <tx:method name="doTransaction" propagation="REQUIRED" rollback-for="java.lang.Exception" /> </tx:attributes> </tx:advice> <aop:config> <aop:pointcut id="transactionPointcut" expression="execution(* com.forg..service..*(..))" /> <aop:advisor pointcut-ref="transactionPointcut" advice-ref="transactionAdvice" /> </aop:config>

Service如下

public boolean doTransaction(String p1,String p2){

	boolean a = testDAO.doUpdate1(p1);
	
	if(a){
		throw new RuntimeException("抛出异常");
	}
	
	boolean b = testDAO.doUpdate2(p2);
	
	return a && b;
}

public boolean callTransaction(String p1,String p2){

// try{ return doTransaction(p1,p2); // }catch(Exception e){ // System.out.println("doTransaction_exception!"); // throw new RuntimeException("抛出异常"); // return false;

// } }

调用Controller

public String testTransction(@RequestParam(value="p1",required=true)String p1,
			@RequestParam(value="p2",required=true) String p2){
		
		if(("p111").equals(p1)){
			if(ts.doTransaction(p1, p2)){//这里是可以回滚update1的
				return "OK";
			}
			return "NOT OK";
		}
		
		try {
			if(ts.callTransaction(p1, p2)){//这里却不可以！
				return "OK";
			}
		} catch (Exception e) {
			System.out.println("callTransaction_exception");
		}
		
		
		return "NOT OK";
	}

请各位大牛帮忙看下，不知道是什么原因导致的？

是到service级别的 ？还是我对事务传播机制理解有误？
下面是日志
直接调用callTransaction

[DEBUG] [org.mybatis.spring.SqlSessionUtils]Creating a new SqlSession
kan>plugin...
[DEBUG] [org.mybatis.spring.SqlSessionUtils]SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@7e10020] was not registered for synchronization because synchronization is not active
kan>plugin...
kan>plugin...
kan>plugin...
[DEBUG] [org.mybatis.spring.transaction.SpringManagedTransaction]JDBC Connection [com.alibaba.druid.proxy.jdbc.ConnectionProxyImpl@3ffcfd14] will not be managed by Spring
[DEBUG] [com.forg.com.test.update1]==>  Preparing: UPDATE t_1 SET CNT = ? WHERE ID =1 
[DEBUG] [com.forg.com.test.update1]==> Parameters: p112(String)
[DEBUG] [com.forg.com.test.update1]<==    Updates: 1
[DEBUG] [org.mybatis.spring.SqlSessionUtils]Closing non transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@7e10020]
一月 07, 2015 2:25:43 下午 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet [springMVC] in context with path [/forgweb] threw exception [Request processing failed; nested exception is java.lang.RuntimeException: 抛出异常] with root cause
java.lang.RuntimeException: 抛出异常
	at com.forg.test.service.TransactionTestService.doTransaction(TransactionTestService.java:32)

直接调用 doTransaction

kan>plugin...
[DEBUG] [org.mybatis.spring.SqlSessionUtils]Registering transaction synchronization for SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@3ccb117c]
kan>plugin...
kan>plugin...
kan>plugin...
[DEBUG] [org.mybatis.spring.transaction.SpringManagedTransaction]JDBC Connection [com.alibaba.druid.proxy.jdbc.ConnectionProxyImpl@3ffcfd14] will be managed by Spring
[DEBUG] [com.forg.com.test.update1]==>  Preparing: UPDATE t_1 SET CNT = ? WHERE ID =1 
[DEBUG] [com.forg.com.test.update1]==> Parameters: p111(String)
[DEBUG] [com.forg.com.test.update1]<==    Updates: 1
[DEBUG] [org.mybatis.spring.SqlSessionUtils]Releasing transactional SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@3ccb117c]
[DEBUG] [org.mybatis.spring.SqlSessionUtils]Transaction synchronization deregistering SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@3ccb117c]
[DEBUG] [org.mybatis.spring.SqlSessionUtils]Transaction synchronization closing SqlSession [org.apache.ibatis.session.defaults.DefaultSqlSession@3ccb117c]
一月 07, 2015 2:26:27 下午 org.apache.catalina.core.StandardWrapperValve invoke
严重: Servlet.service() for servlet [springMVC] in context with path [/forgweb] threw exception [Request processing failed; nested exception is java.lang.RuntimeException: 抛出异常] with root cause
java.lang.RuntimeException: 抛出异常
	at com.forg.test.service.TransactionTestService.doTransaction(TransactionTestService.java:32)