java.lang.IllegalStateException: Unknown Priority XXXX 的解决方法

异常信息：

java.lang.IllegalStateException: Unknown Priority SYS_ERR_SMS at org.apache.log4j.Category.priorityToLevelInt(Category.java:326) ~[log4j-over-slf4j-1.7.12.jar:1.7.12] at org.apache.log4j.Category.log(Category.java:306) ~[log4j-over-slf4j-1.7.12.jar:1.7.12] at com.hopebank.antiFraud.sdk.aop.NetworkWatcherInterceptor.watchSpendsTime(NetworkWatcherInterceptor.java:117) ~[af-sdk-1.27.jar:na] at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.7.0_75] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) ~[na:1.7.0_75] at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.7.0_75] at java.lang.reflect.Method.invoke(Method.java:606) ~[na:1.7.0_75] at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethodWithGivenArgs(AbstractAspectJAdvice.java:621) ~[spring-aop-3.2.13.RELEASE.jar:3.2.13.RELEASE] at org.springframework.aop.aspectj.AbstractAspectJAdvice.invokeAdviceMethod(AbstractAspectJAdvice.java:610) ~[spring-aop-3.2.13.RELEASE.jar:3.2.13.RELEASE] at org.springframework.aop.aspectj.AspectJAroundAdvice.invoke(AspectJAroundAdvice.java:65) ~[spring-aop-3.2.13.RELEASE.jar:3.2.13.RELEASE] at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:161) ~[spring-aop-

解决过程： 这个异常从开始一直定位不到是哪里出问题，后面看是在log4j里面抛出的，然后查看日志包，发现log4j-over-slf4j与slf4j-log4j12两个日志包重复冲突了，然后删掉了slf4j-log4j12包，问题解决。