java.lang.RuntimeException: java.lang.IllegalStateException: Already value [org.mybatis.spring.SqlSessionHolder@3d3aed10] for key [org.apache.ibatis.session.defaults.DefaultSqlSessionFactory@2cd5470] bound to thread [XNIO-2 task-5]
at org.itboys.manager.OrderManager.payNotify(OrderManager.java:2496) ~[manager-1.0.jar!/:1.0]
at org.itboys.manager.OrderManager$$FastClassBySpringCGLIB$$e820d9d2.invoke() ~[spring-core-4.1.7.RELEASE.jar!/:1.0]
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204) ~[spring-core-4.1.7.RELEASE.jar!/:4.1.7.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:717) ~[spring-aop-4.1.7.RELEASE.jar!/:4.1.7.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:157) ~[spring-aop-4.1.7.RELEASE.jar!/:4.1.7.RELEASE]
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:99) ~[spring-tx-4.1.7.RELEASE.jar!/:4.1.7.RELEASE]
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:281) ~[spring-tx-4.1.7.RELEASE.jar!/:4.1.7.RELEASE]
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:96) ~[spring-tx-4.1.7.RELEASE.jar!/:4.1.7.RELEASE]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:179) ~[spring-aop-4.1.7.RELEASE.jar!/:4.1.7.RELEASE]
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:653) ~[spring-aop-4.1.7.RELEASE.jar!/:4.1.7.RELEASE]
at org.itboys.manager.OrderManager$$EnhancerBySpringCGLIB$$d4e26f4f.payNotify() ~[spring-core-4.1.7.RELEASE.jar!/:1.0]
请技术大牛指点一下，这个是什么错误啊？要怎么解决呢？
