I'm using Spring 2.5, Hibernate, JPA and WLS9.2, and I'm having some problems using the @Service annotation. I have a service implementation class annotated with @Service, the service class has a method called saveUser. Inside the saveUser method I do jpaTemplate.persists and jpaTemplate.flush . When flush is called, "InvalidDataAccessApiUsageException: no transaction is in progress" gets thrown.

Here's the stack trace:
--------------------------

严�: org.springframework.dao.InvalidDataAccessApiUsageException: no transaction is in progress; nested exception is javax.persistence.TransactionRequiredException: no transaction is in progress
javax.faces.el.EvaluationException: org.springframework.dao.InvalidDataAccessApiUsageException: no transaction is in progress; nested exception is javax.persistence.TransactionRequiredException: no transaction is in progress
 at javax.faces.component.MethodBindingMethodExpressionAdapter.invoke(MethodBindingMethodExpressionAdapter.java:91)
 at com.sun.faces.application.ActionListenerImpl.processAction(ActionListenerImpl.java:91)
 at com.sun.faces.lifecycle.LifecycleImpl.phase(LifecycleImpl.java:251)
 at com.sun.faces.lifecycle.LifecycleImpl.execute(LifecycleImpl.java:117)
 at javax.faces.webapp.FacesServlet.service(FacesServlet.java:244)
 at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:225)
 at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:127)
 at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:283)
 at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
 at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:83)
 at org.jboss.seam.debug.hot.HotDeployFilter.doFilter(HotDeployFilter.java:68)
 at org.jboss.seam.servlet.SeamFilter$FilterChainImpl.doFilter(SeamFilter.java:69)
... 37 more
Caused by: javax.persistence.TransactionRequiredException: no transaction is in progress
 at org.hibernate.ejb.AbstractEntityManagerImpl.flush(AbstractEntityManagerImpl.java:294)
 at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
 at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
 at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
 at java.lang.reflect.Method.invoke(Method.java:585)
 at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:346)
 at $Proxy112.flush(Unknown Source)
 at org.springframework.orm.jpa.JpaTemplate$8.doInJpa(JpaTemplate.java:283)
 at org.springframework.orm.jpa.JpaTemplate.execute(JpaTemplate.java:185)
 ... 76 more

<core:manager conversation-timeout="120000" concurrent-request-timeout="500" conversation-id-parameter="cid" />
 <core:init transaction-management-enabled="true" debug="true" />
 <transaction:no-transaction />
 <spring:context-loader />

<jee:jndi-lookup id="fw.defaultDataSource" jndi-name="jdbc/crm" />
<bean id="transactionManager" class="org.springframework.transaction.jta.WebLogicJtaTransactionManager" />
<tx:annotation-driven transaction-manager="transactionManager" />
<bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor"></bean>
<bean id="fw.jpaTemplate" class="org.springframework.orm.jpa..JpaTemplate">
 <property name="entityManagerFactory" ref="fw.defaultEMF" />
 </bean>
<bean id="fw.defaultEMF" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
 <property name="dataSource" ref="fw.defaultDataSource" />
 <property name="jpaVendorAdapter">
 <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
 <property name="database" value="ORACLE" />
 <property name="showSql" value="true" />
 </bean>
 </property>
 <property name="loadTimeWeaver">
 <bean class="org.springframework.instrument.classloading.InstrumentationLoadTimeWeaver" />
 </property>
 <property name="persistenceUnitName" value="fw.defaultPersistenceUnit" />
 </bean>

@In("#{userService}")
 private UserService userService;
public void register() {
userService.createUser(user);
}
}

@Autowired
@Qualifier("fw.jpaTemplate")
org.springframework.orm.jpa.JpaTemplate jpaTemplate;

@Transactional
 public void createUser(final User user) throws ValidationException {
jpaTemplate.persist(user);
jpaTemplate.flush();
}

@Entity
@Name("user")
@Scope(SESSION)
@Table(name="Customer")
public class User implements Serializable
{....}