调用后端服务zzz抛异常:java.lang.NoSuchMethodError，服务不可用。
异常信息:
java.lang.RuntimeException: java.lang.NoSuchMethodError: com.xxx.service.yyyServiceImpl.zzz(Ljava/lang/Long;Ljava/lang/Long;Ljava/lang/String;Ljava/lang/String;)Ljava/util/List;
at com.rop.impl.AnnotationServiceMethodAdapter.invokeServiceMethod(AnnotationServiceMethodAdapter.java:56)
at com.rop.impl.AnnotationServletServiceRouter.doService(AnnotationServletServiceRouter.java:655)
at com.rop.impl.AnnotationServletServiceRouter.access$600(AnnotationServletServiceRouter.java:43)
at com.rop.impl.AnnotationServletServiceRouter$ServiceRunnable.run(AnnotationServletServiceRouter.java:453)
at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NoSuchMethodError: com.xxx.service.yyy.zzz(Ljava/lang/Long;Ljava/lang/Long;Ljava/lang/String;Ljava/lang/String;)Ljava/util/List;
at com.xxx.controller.yyyController.zzz(yyyController.java:1856)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at com.rop.impl.AnnotationServiceMethodAdapter.invokeServiceMethod(AnnotationServiceMethodAdapter.java:48)
... 8 more

问题描述：本地开发调试一切正常，发布到正式环境出现如上错误
想了无数种可能（jdk版本不同，返回Map未设置K,V等）
最后灵光一闪，或许是加载的接口不是我写的接口（果然另外一同事提交到maven中的jar有此接口）
总结，若再遇到此类问题要从重复类找起。