按照a thread about service beans中给出的好建议后，我已经制作了一份列在其下的服务。我已经尝试在接口级别，接口方法级别，类级别和类方法级别放置@Transactional。但是我这样做了，我得到了
org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named 'org.springframework.transaction.interceptor.TransactionInterceptor#0' must be of type [org.aopalliance.aop.Advice], but was actually of type [org.springframework.transaction.interceptor.TransactionInterceptor]
更新：我在定义<tx:annotation-driven transaction-manager="transactionManager/>时才会收到此错误，但如果没有它，则@Transactional注释不执行任何操作，而且我没有进行Hibernate会话。
知道我为什么会收到这个错误吗？我对此很陌生，但看起来我正在做PetClinic的例子，我已经搜索了几个小时并浏览了文档而没有更明智。
更新：我还找到了一种方法，可以根据Abhi On Java的建议将自己配置为同样的错误。我已经在这篇文章的最后部分添加了所有内容。
我的配置，界面和类如下所示。这是加载服务的配置（更新：服务在底部加载什么。第一部分是关于我的数据库和更多）：
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource">
<property name="driverClassName" value="com.mysql.jdbc.Driver" />
<property name="url" value="jdbc:mysql://${db.host}:{db.port}/{db.name}" />
<property name="username" value="{db.username}" />
<property name="password" value="{db.password}" />
<property name="initialSize" value="{db.minConnections}" />
<property name="maxActive" value="{db.maxConnections}" />
</bean>
<bean id="sessionFactory" class="org.springframework.orm.hibernate3.annotation.AnnotationSessionFactoryBean">
<property name="dataSource" ref="dataSource"/>
<property name="annotatedClasses">
<list>
<value>tld.mydomain.data.entities.User</value>
</list>
</property>
<property name="hibernateProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQLDialect</prop>
<prop key="hibernate.show_sql">false</prop>
</props>
</property>
</bean>
<bean id="transactionManager" class="org.springframework.orm.hibernate3.HibernateTransactionManager">
<property name="sessionFactory" ref="sessionFactory"/>
</bean>
<tx:annotation-driven transaction-manager="transactionManager"/>
<bean class="org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor"/>
<bean name="openSessionInViewInterceptor" class="org.springframework.orm.hibernate3.support.OpenSessionInViewInterceptor">
<property name="sessionFactory" ref="sessionFactory"/>
<property name="flushMode" value="0" />
</bean>
<!--
<bean id="txProxyTemplate" class="org.springframework.transaction.interceptor.TransactionProxyFactoryBean" abstract="true">
<property name="transactionManager" ref="transactionManager"/>
<property name="transactionAttributes">
<props>
<prop key="create*">PROPAGATION_REQUIRED</prop>
<prop key="update*">PROPAGATION_REQUIRED</prop>
<prop key="delete*">PROPAGATION_REQUIRED</prop>
<prop key="*">PROPAGATION_SUPPORTS,readOnly</prop>
</props>
</property>
</bean>
-->
<context:component-scan base-package="tld.mydomain.business"/>
这是界面：
import org.springframework.security.core.userdetails.UserDetailsService;
import org.springframework.transaction.annotation.Transactional;
import tld.mydomain.data.entities.User;
import tld.mydomain.data.entities.keys.UserId;
public interface UserService extends UserDetailsService, CRUDService<User, UserId> {
@Transactional(readOnly = true)
public User lookupUser(String username);
@Transactional(readOnly = true)
public User publicAliasForUser(String username);
}
和班级：
import java.util.List;
import org.hibernate.criterion.Restrictions;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.dao.DataAccessException;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import tld.mydomain.commons.RandomString;
import tld.mydomain.data.entities.User;
@Service("userService")
public class UserServiceImpl extends AbstractCRUDServiceImpl<User, String> implements UserService {
@Autowired
private LogService logService;
@SuppressWarnings("unchecked")
@Override
public User lookupUser(String username) {
if(username == null || username.equals("") || username.equals("anonymousUser"))
return null;
try {
List<User> matchingUsers = (List<User>) DAO.getSession().createCriteria(User.class).add(Restrictions.eq("username", username)).list();
int n = matchingUsers.size();
if(n == 0) return null;
if(n > 1) logService.logWarning("Got " + n + " users back, expected just one. Data inconsistency, multiple users with username = " + username);
return matchingUsers.get(0);
} catch (Exception ex) {
logService.logException(ex);
return null;
}
}
@Override
public UserDetails loadUserByUsername(String username)
throws UsernameNotFoundException, DataAccessException {
if(username == null || username.equals("") || username.equals("anonymousUser"))
return null;
User user = this.lookupUser(username);
if(user == null) {
logService.logWarning("Couldn't find a user to match, throw out a garbage object");
user = new User();
user.setUsername(RandomString.getString(30));
user.setPassword(RandomString.getString(30));
}
return user.getUserDetails();
}
@SuppressWarnings("unchecked")
public User publicAliasForUser(String alias) {
List<User> publicUsers = DAO.getSession().createCriteria(User.class)
.add(Restrictions.eq("alias", alias))
.list();
if(publicUsers.size() <= 0) return null;
if(publicUsers.size() > 1) logService.logWarning("Data inconsistency: More than one alias for a user with alias " + alias);
return publicUsers.get(0);
}
}
这是一个完整的例外：
org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named 'org.springframework.transaction.interceptor.TransactionInterceptor#0' must be of type [org.aopalliance.aop.Advice], but was actually of type [org.springframework.transaction.interceptor.TransactionInterceptor]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:347)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:192)
at org.springframework.aop.support.AbstractBeanFactoryPointcutAdvisor.getAdvice(AbstractBeanFactoryPointcutAdvisor.java:77)
at org.springframework.aop.framework.adapter.DefaultAdvisorAdapterRegistry.getInterceptors(DefaultAdvisorAdapterRegistry.java:78)
at org.springframework.aop.framework.DefaultAdvisorChainFactory.getInterceptorsAndDynamicInterceptionAdvice(DefaultAdvisorChainFactory.java:61)
at org.springframework.aop.framework.AdvisedSupport.getInterceptorsAndDynamicInterceptionAdvice(AdvisedSupport.java:481)
at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:188)
at $Proxy28.loadUserByUsername(Unknown Source)
at org.springframework.security.authentication.dao.DaoAuthenticationProvider.retrieveUser(DaoAuthenticationProvider.java:83)
at org.springframework.security.authentication.dao.AbstractUserDetailsAuthenticationProvider.authenticate(AbstractUserDetailsAuthenticationProvider.java:125)
at org.springframework.security.authentication.ProviderManager.doAuthentication(ProviderManager.java:121)
at org.springframework.security.authentication.AbstractAuthenticationManager.authenticate(AbstractAuthenticationManager.java:49)
at org.springframework.security.authentication.ProviderManager.doAuthentication(ProviderManager.java:139)
at org.springframework.security.authentication.AbstractAuthenticationManager.authenticate(AbstractAuthenticationManager.java:49)
at org.springframework.security.web.authentication.www.BasicAuthenticationFilter.doFilter(BasicAuthenticationFilter.java:142)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
at org.springframework.security.web.authentication.ui.DefaultLoginPageGeneratingFilter.doFilter(DefaultLoginPageGeneratingFilter.java:92)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:188)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:106)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:80)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
at org.springframework.security.web.access.channel.ChannelProcessingFilter.doFilter(ChannelProcessingFilter.java:110)
at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:356)
at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:150)
at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)
at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:849)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:583)
at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:454)
at java.lang.Thread.run(Thread.java:637)
最后，正如所承诺的，这里是我可以添加配置以获得完全相同的异常：
<aop:config>
<aop:pointcut id="serviceMethods" expression="execution(* tld.mydomain.business..*(..))" />
<aop:advisor advice-ref="txAdvice" pointcut-ref="serviceMethods" />
</aop:config>
<tx:advice id="txAdvice" transaction-manager="transactionManager" >
<tx:attributes>
<tx:method name="*" propagation="REQUIRES_NEW" />
</tx:attributes>
</tx:advice>
这再次给了我以下例外：
Caused by: org.springframework.beans.factory.BeanNotOfRequiredTypeException: Bean named 'txAdvice' must be of type [org.aopalliance.aop.Advice], but was actually of type [org.springframework.transaction.interceptor.TransactionInterceptor]
at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:347)
at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:192)
at org.springframework.aop.support.AbstractBeanFactoryPointcutAdvisor.getAdvice(AbstractBeanFactoryPointcutAdvisor.java:77)
at org.springframework.aop.aspectj.AspectJProxyUtils.isAspectJAdvice(AspectJProxyUtils.java:67)
at org.springframework.aop.aspectj.AspectJProxyUtils.makeAdvisorChainAspectJCapableIfNecessary(AspectJProxyUtils.java:49)
at org.springframework.aop.aspectj.autoproxy.AspectJAwareAdvisorAutoProxyCreator.extendAdvisors(AspectJAwareAdvisorAutoProxyCreator.java:101)
at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.findEligibleAdvisors(AbstractAdvisorAutoProxyCreator.java:88)
at org.springframework.aop.framework.autoproxy.AbstractAdvisorAutoProxyCreator.getAdvicesAndAdvisorsForBean(AbstractAdvisorAutoProxyCreator.java:68)
at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.wrapIfNecessary(AbstractAutoProxyCreator.java:359)
at org.springframework.aop.framework.autoproxy.AbstractAutoProxyCreator.postProcessAfterInitialization(AbstractAutoProxyCreator.java:322)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.applyBeanPostProcessorsAfterInitialization(AbstractAutowireCapableBeanFactory.java:404)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1401)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:512)
... 26 more
干杯
的Nik
答案 0 :(得分：5)
我想我现在看到了问题：
...必须是类型 [org.aopalliance.aop.Advice]，但是 实际上是类型 [org.springframework.transaction.interceptor.TransactionInterceptor]
鉴于TransactionInterceptor是org.aopalliance.aop.Advice的实现，这告诉我你有一个类加载问题。具体来说，你要么有两个不同的类加载器加载Spring的两个副本，要么由两个不同的类加载器加载两个aop-all的副本。在这种情况下，您可能会出现instanceof错误或ClassCastExceptions，这可能有点难以诊断。
我建议查看您的清单和类路径，包括app-server自己的类路径，并确保您的应用程序只能在一个地方找到Spring和aop-alliance。请记住，Spring JAR已经包含了aop-alliance内容的副本，因此您不需要另外的副本。