can't proxy Repository class with @transaction annotation

[lob]

when i add @Transactional on CountryDAO the problems come.error is: java.lang.IllegalArgumentException: Cannot subclass final class class $Proxy31
CountryDAO.java

@Transactional(readOnly = true)
public interface CountryDAO extends JpaRepository<Country, String> {
	
	public List<Country> findByCountryId(String countryId); 
	
	@Modifying
	@Transactional
	@Query("delete from Country c where c.countryId =?1  ")
	public void deleteCountryById(String id);
}

testClass

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(value = "file:WebRoot/WEB-INF/config_*.xml")
public class AuditTest {
	

	@Autowired
	private AuditorAwareImpl auditorAwareImpl;
	@Autowired
	private CountryDAO countryDAO;
	
	@Test
	public void testPersistAuditableMethod(){
//		Country country = new Country();
//		country.setCountryId("653");
//		country.setName("china");
//		countryDAO.save(country);
//		System.out.println("currentAuditor:"+auditorAwareImpl.getCurrentAuditor());
		//System.out.println("countryDao.findByCountryId method====>"+countryDAO.findByCountryId("653"));
		countryDAO.deleteCountryById("653");
	}
}

configure_jpa.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:jdbc="http://www.springframework.org/schema/jdbc"
	xmlns:jpa="http://www.springframework.org/schema/data/jpa" 
	xmlns:context="http://www.springframework.org/schema/context"
	xmlns:tx="http://www.springframework.org/schema/tx"
	xsi:schemaLocation="http://www.springframework.org/schema/beans
    http://www.springframework.org/schema/beans/spring-beans.xsd
    http://www.springframework.org/schema/jdbc
    http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
    http://www.springframework.org/schema/data/jpa
    http://www.springframework.org/schema/data/jpa/spring-jpa.xsd
    http://www.springframework.org/schema/context
    http://www.springframework.org/schema/context/spring-context-2.5.xsd
    http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">
	<context:annotation-config />  
	<!-- Directory to scan for repository classes -->
	<jpa:repositories base-package="com.my.repository" entity-manager-factory-ref="entityManagerFactory" transaction-manager-ref="transactionManager" query-lookup-strategy="create-if-not-found">
	</jpa:repositories>
	
	<!--   -->
	<jpa:auditing auditor-aware-ref="auditorAware" />
	
	<!--  
	<jdbc:embedded-database id="dataSource" type="HSQL" />
	-->
	<!--  
	<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
		<property name="driverClassName" value="oracle.jdbc.driver.OracleDriver"></property>
		<property name="url" value="jdbc:oracle:thin:@10.1.1.104:1521:OEMREP"></property>
		<property name="username" value="eccn"></property>
		<property name="password" value="eccn"></property>
		<property name="maxActive">
			<value>15</value>
		</property>
	</bean>
	 -->
	 <!--  -->
	 <bean id="auditorAware" class="com.my.auditing.AuditorAwareImpl"/>
	 
	 
	 <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
		<property name="entityManagerFactory" ref="entityManagerFactory" />
		<!-- 
		<property name="dataSource" ref="dataSource"/>
		 -->
	</bean>
	
	<!-- 配置JPA实体管理器工厂 -->
	<bean id="entityManagerFactory"
		class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
		<!-- -->
		<property name="persistenceXmlLocation" value="classpath*:persistence.xml" />
		<!-- 
		<property name="dataSource" ref="dataSource"/>
		 -->
		<!-- 
			<property name="packagesToScan" value="com.my.repository"/>
		 -->
		<property name="persistenceUnitName" value="jpa" />
		<property name="jpaDialect">
			<bean class="org.springframework.orm.jpa.vendor.HibernateJpaDialect"/>
		</property>
		<!-- -->
		<property name="jpaVendorAdapter">
			<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
				<property name="generateDdl" value="true" />
				<!-- 
				<property name="database" value="HSQL" />
				 -->
			</bean>
		</property>
		<!-- -->
		<!-- 
		<property name="loadTimeWeaver">
			<bean
				class="org.springframework.instrument.classloading.SimpleLoadTimeWeaver" />
		</property>
		 -->
	</bean>
	<!-- -->
	<bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor"/> 
	
	 <!-- -->
	<bean class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor"/>
	 
	 <!-- -->
	<tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="true" />
	 
</beans>

error:

java.lang.IllegalStateException: Failed to load ApplicationContext
	
Caused by: java.lang.IllegalArgumentException: Cannot subclass final class class $Proxy31
	at net.sf.cglib.proxy.Enhancer.generateClass(Enhancer.java:446)
	at net.sf.cglib.transform.TransformingClassGenerator.generateClass(TransformingClassGenerator.java:33)
	at net.sf.cglib.core.DefaultGeneratorStrategy.generate(DefaultGeneratorStrategy.java:25)
	at net.sf.cglib.core.AbstractClassGenerator.create(AbstractClassGenerator.java:216)
	at net.sf.cglib.proxy.Enhancer.createHelper(Enhancer.java:377)
	at net.sf.cglib.proxy.Enhancer.create(Enhancer.java:285)
	at org.springframework.aop.framework.Cglib2AopProxy.getProxy(Cglib2AopProxy.java:201)
	... 56 more

if no @transaction annotation then no error generates.

[kevin.chan]

Make sure your proxy-target-class is "false" for your tx:annotation-driven. See the documentation of tx:annotation-driven

[mikejbond]

I am experiencing the same issue. Problem is the project I am working on needs to have proxy-target-class set to true for other reasons. Is there some other workaround that anyone has come up with?