解决：ClassCastException when testcase is using Spring AOP proxied

一、异常信息：

java.lang.ClassCastException: com.sun.proxy.$Proxy44 cannot be cast to...

二、前提：ClassCastException When using @Transactional annotation

@Transactional(propagation = Propagation.NOT_SUPPORTED)

三、解决办法：

x:annotation标签设置属性proxy-target-class=true

<tx:annotation-driven proxy-target-class="true"/>

参考：
http://sonarqube.15.x6.nabble.com/ClassCastException-when-testcase-is-using-Spring-AOP-proxied-bean-td3202465.html