Struts2+spring3.1+jpa事务不提交的有关问题

Struts2+spring3.1+jpa事务不提交的问题
环境：
STRUTS 2
SPRING 3.1
JPA 1.0 HIBERNATE 3.3

persistence.xml文件

<?xml version="1.0" encoding="UTF-8"?>

<persistence xmlns="http://java.sun.com/xml/ns/persistence"

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

    xsi:schemaLocation="http://java.sun.com/xml/ns/persistence

    http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd" version="1.0">

    

	<persistence-unit name="aims" transaction-type="RESOURCE_LOCAL">

		<provider>org.hibernate.ejb.HibernatePersistence</provider>

		<class>org.niux.aims.models.Menu</class>

		<class>org.niux.aims.models.EntityType</class>

		<class>org.niux.aims.models.Auth</class>

		<class>org.niux.aims.models.Logs</class>

		<class>org.niux.aims.models.Entitys</class>

		<class>org.niux.aims.models.Account</class>

		<class>org.niux.aims.models.Application</class>

		<properties>

			<property name="hibernate.connection.driver_class"

				value="com.mysql.jdbc.Driver" />

			<property name="hibernate.connection.url"

				value="jdbc:mysql://localhost:3306/aims" />

			<property name="hibernate.connection.username" value="root" />

			<property name="hibernate.connection.password"

				value="lyslmx0723" />

		</properties>

	</persistence-unit>


</persistence>

applicationContext.xml文件

<?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:aop="http://www.springframework.org/schema/aop"  

               xmlns:tx="http://www.springframework.org/schema/tx"  

               xmlns:context="http://www.springframework.org/schema/context"  

               xmlns:p="http://www.springframework.org/schema/p"    

               xmlns:cache="http://www.springframework.org/schema/cache"    

               xsi:schemaLocation="http://www.springframework.org/schema/beans