怎么解决java.lang.VerifyError问题

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测试环境，没有任何改动，启动突然出现这个问题：java.lang.VerifyError

网上搜了大部分的问题，基本判断是jar包重复，或者更本质是class重复导致触发了JVM的安全机制，要求一个jar包的引用必须要在jar包内。

项目有这样的两个jar包，castor-1.2.jar ,castor-xml-1.3.2.jar. 里面的 util文件夹里的类大部分一样，虽然更底层的原理暂不知，但删掉castor-1.2.jar后，

项目运行正常。

为什么删这个？如下面日志：org.castor.xml.AbstractInternalContext类是castor-xml里面的，它引用的org/castor/xml/XMLConfiguration在两个jar包都有

而castor-1.2.jar根本没有引用。

[http-nio-8062-exec-2] [ERROR] [2020-09-28 18:19:34,613] [logid:5d889f01b611462381e9f789b8e84d89] [sessionId:e52cd793-ed3e-457c-8add-9e4cf8b75a78] cn.com.sinosoft.iecs.web.filter.Log4jFilter.doFilter(Log4jFilter.java:52) -执行Log4j过滤器拦截到Controller执行失败，logid: 5d889f01b611462381e9f789b8e84d89org.springframework.web.util.NestedServletException: Handler processing failed; nested exception is java.lang.VerifyError: (class: org/castor/xml/XMLConfiguration, method: newInstance signature: ()Lorg/castor/core/util/Configuration;) Incompatible argument to function        at org.springframework.web.servlet.DispatcherServlet.triggerAfterCompletionWithError(DispatcherServlet.java:1275)        at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:951)        at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:867)        at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:953)        at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:844)        at javax.servlet.http.HttpServlet.service(HttpServlet.java:622)        at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:829)        at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230)        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)        at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)        at cn.com.sinosoft.iecs.online.core.security.XssCheckFilter.doFilter(XssCheckFilter.java:87)        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)        at cn.com.sinosoft.iecs.web.filter.Log4jFilter.doFilter(Log4jFilter.java:50)        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)        at org.springframework.session.web.http.SessionRepositoryFilter.doFilterInternal(SessionRepositoryFilter.java:164)        at org.springframework.session.web.http.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:80)        at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:343)        at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:260)        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)        at cn.com.sinosoft.iecs.sso.client.util.AssertionThreadLocalFilter.doFilter(AssertionThreadLocalFilter.java:54)        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)        at cn.com.sinosoft.iecs.sso.client.util.HttpServletRequestWrapperFilter.doFilter(HttpServletRequestWrapperFilter.java:76)        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)        at cn.com.sinosoft.iecs.sso.client.validation.AbstractTicketValidationFilter.doFilter(AbstractTicketValidationFilter.java:260)        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)        at cn.com.sinosoft.iecs.sso.client.session.SingleSignOutFilter.doFilter(SingleSignOutFilter.java:76)        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)        at cn.com.sinosoft.iecs.online.core.security.CookieFilter.doFilter(CookieFilter.java:46)        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)        at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:106)        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)        at org.springframework.orm.hibernate3.support.OpenSessionInViewFilter.doFilterInternal(OpenSessionInViewFilter.java:230)        at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:106)        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192)        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165)        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:199)        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:474)        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140)        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)        at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)        at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:783)        at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)        at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:745)        at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1437)        at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)        at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)        at java.lang.Thread.run(Thread.java:745)Caused by: java.lang.VerifyError: (class: org/castor/xml/XMLConfiguration, method: newInstance signature: ()Lorg/castor/core/util/Configuration;) Incompatible argument to function        at org.castor.xml.AbstractInternalContext.(AbstractInternalContext.java:121)        at org.castor.xml.BackwardCompatibilityContext.(BackwardCompatibilityContext.java:45)        at org.exolab.castor.xml.MarshalFramework.(MarshalFramework.java:185)        at org.exolab.castor.xml.Marshaller.(Marshaller.java:322)        at cn.com.sinosoft.iecs.online.core.util.CastorUtil.MarshallerXML(CastorUtil.java:50)        at cn.com.sinosoft.iecs.online.sale.service.impl.SalesManCheckServiceImpl.getSalesManCheck(SalesManCheckServiceImpl.java:45)        at cn.com.sinosoft.iecs.online.sale.service.impl.SalesManCheckServiceImpl$$FastClassBySpringCGLIB$$d9da3df.invoke()        at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:204)        at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:700)        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:150)        at org.springframework.aop.aspectj.AspectJAfterThrowingAdvice.invoke(AspectJAfterThrowingAdvice.java:55)        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)        at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:96)        at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:260)        at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)        at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:96)        at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:260)        at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:94)        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)        at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:91)        at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:172)        at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:633)        at cn.com.sinosoft.iecs.online.sale.service.impl.SalesManCheckServiceImpl$$EnhancerBySpringCGLIB$$8d051b3.getSalesManCheck()        at cn.com.sinosoft.iecs.web.sale.ProductSaleActivitController.activit(ProductSaleActivitController.java:214)        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)        at java.lang.reflect.Method.invoke(Method.java:498)        at org.springframework.web.method.support.InvocableHandlerMethod.invoke(InvocableHandlerMethod.java:215)        at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:132)        at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:104)        at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandleMethod(RequestMappingHandlerAdapter.java:743)        at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:672)        at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:82)        at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:933)        ... 63 more

最后附上搜索得来的结果，是从里面找到线索的：

1、当一个bai jar 文件的 MANIFEST.MF 中已经标记了 Sealed: true 时，这个 jar 内所有的du java package 中的类必zhi须来自这个 jar 包，这是 JVM 的安全措施，配合数字签名就能防止篡改，微软就把它的 SQLServer 驱动程序签名了。比如，JRE 的 rt.jar 就是 Sealed，所以你自己创建一个类 java.lang.MyClass 来运行的话，JVM 是拒绝的。通常情况下，如果你使用了基于动态代理的 AOP，比如 Hibernate 延迟加载或 Spring 的 AOP 就可能因为临时生成的一个子类本身生成在内存中而不是来自某个 jar 包，这时如果这个 jar 包是 Sealed 就无法工作，比如 Microsoft SQLServer JDBC 驱动程序在 Sealed 时你用 Hibernate 的延迟加载就会出错，因为 Hibernate 生成的代理类继承了某个 JDBC 驱动包内的类但这个驱动包是 Sealed，生成的类的包名在驱动名的 jar 中就会出错。
2、可能是类版本错误。这个错误是你说你当前的某个类它引用到的其它类库的版本与这个类在编译时所用的版本不相同 ，比如：你的类 A 用了 c_1.0.jar 中的某个类，编译之后拿到服务器上去用，但服务器上的只有 c_1.1.jar 这个类，它的版本与 c_1.0.jar 某个用到的类略有差异。

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