Java JDBC代码为MySql提供了IllegaAccessError

检索数据库表主键、外键和列信息时出现以下错误。基本上我知道IllegaAccess与访问私有方法等有关，可能是由于不兼容的更改

我正在使用mysql的以下版本。我在类路径中只有一个mysql jar

<dependency>
    <groupId>mysql</groupId>
    <artifactId>mysql-connector-java</artifactId>
    <version>5.1.34</version>
</dependency>

但我经常面临这个问题。在我的开发机器中，代码可以正常工作，但是当我部署到登台服务器时，我经常会遇到这个问题，但不是一直都会遇到（仅在某些部署期间）。如何解决这个问题

附加信息：正在使用的Servlet容器是Tomcat 6.0.26。该应用程序是一个Spring应用程序

服务器的共享目录JAR：

---

正如您所推断的，原因很可能是编译时类和运行时类之间的冲突，其中类（来自JavaDoc）发生了不可撤销的更改

---

查看您的共享文件夹，我想说可能是

mariadb-java-client-1.1.2.jar

是罪魁祸首。

您是如何构建项目的（例如Maven、Ant、Gradle）？您使用的是哪个IDE？你检查过你的WAR的

WEB-INF/lib

目录了吗？我在用IntellJ Idea。我用Maven。在每次部署之前，我都使用IDE中的mvn clean，然后构建war文件。@TimBiegeleisen Mysql jar版本在lib目录中是相同的Tomcats共享目录中是否有一些散乱的jar？@AndersR.Bystrup添加了包含服务器共享lib文件夹jar文件的图片。MySql是使用mavenBut放在应用程序WEBINF中的，但是你能解释一下为什么会这样吗？Maria和Mysql是不同的罐子，对吗？我无法控制服务器。Maria是mysql的分支，我认为它可能会劫持您提供的一些mysql类，因为它是类路径上的第一个类。在任何情况下，将JDBCJAR放在共享中都不是一个好主意！是 啊我也不喜欢放在共享文件夹中。但不幸的是我无法控制。谢谢。你能告诉我如何通过编程避免使用类加载器加载特定的jar吗？我的意思是只从那个罐子而不是其他罐子获得连接。

IllegalAccessError: com/mysql/jdbc/DatabaseMetaData$7

org.springframework.web.util.NestedServletException: Handler processing failed; nested exception is java.lang.IllegalAccessError: com/mysql/jdbc/DatabaseMetaData$7
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:839)
    at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:719)
    at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:669)
    at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:585)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:637)
    at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:88)
    at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:76)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at com.mycompany.filters.ErrorInterceptorFilter.doFilter(ErrorInterceptorFilter.java:50)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at com.mycompany.security.filters.EFWFilter.doFilter(SourceFile:164)
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:330)
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.invoke(FilterSecurityInterceptor.java:118)
    at org.springframework.security.web.access.intercept.FilterSecurityInterceptor.doFilter(FilterSecurityInterceptor.java:84)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    at org.springframework.security.web.access.ExceptionTranslationFilter.doFilter(ExceptionTranslationFilter.java:113)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    at org.springframework.security.web.session.SessionManagementFilter.doFilter(SessionManagementFilter.java:103)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    at org.springframework.security.web.authentication.AnonymousAuthenticationFilter.doFilter(AnonymousAuthenticationFilter.java:113)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    at org.springframework.security.web.servletapi.SecurityContextHolderAwareRequestFilter.doFilter(SecurityContextHolderAwareRequestFilter.java:54)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    at org.springframework.security.web.savedrequest.RequestCacheAwareFilter.doFilter(RequestCacheAwareFilter.java:45)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    at com.mycompany.service.impl.RequestParameterAuthenticationFilter.doFilter(RequestParameterAuthenticationFilter.java:120)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    at org.springframework.security.web.authentication.AbstractAuthenticationProcessingFilter.doFilter(AbstractAuthenticationProcessingFilter.java:183)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    at org.springframework.security.web.authentication.logout.LogoutFilter.doFilter(LogoutFilter.java:105)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    at org.springframework.security.web.context.SecurityContextPersistenceFilter.doFilter(SecurityContextPersistenceFilter.java:87)
    at org.springframework.security.web.FilterChainProxy$VirtualFilterChain.doFilter(FilterChainProxy.java:342)
    at org.springframework.security.web.FilterChainProxy.doFilterInternal(FilterChainProxy.java:192)
    at org.springframework.security.web.FilterChainProxy.doFilter(FilterChainProxy.java:160)
    at org.springframework.web.filter.DelegatingFilterProxy.invokeDelegate(DelegatingFilterProxy.java:237)
    at org.springframework.web.filter.DelegatingFilterProxy.doFilter(DelegatingFilterProxy.java:167)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at com.thetransactioncompany.cors.CORSFilter.doFilter(CORSFilter.java:208)
    at com.thetransactioncompany.cors.CORSFilter.doFilter(CORSFilter.java:274)
    at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
    at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
    at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
    at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
    at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
    at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
    at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
    at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
    at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:852)
    at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
    at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
    at java.lang.Thread.run(Thread.java:722)
Caused by: java.lang.IllegalAccessError: com/mysql/jdbc/DatabaseMetaData$7
    at com.mysql.jdbc.DatabaseMetaData.getPrimaryKeys(DatabaseMetaData.java:3747)
    at com.mycompany.components.metadata.genericdbmetadata.PrimaryKeyDetails.getPrimaryKeys(PrimaryKeyDetails.java:32)
    at com.mycompany.components.metadata.genericdbmetadata.MetadataProducer.getPrimaryKeys(MetadataProducer.java:345)
    at com.mycompany.components.metadata.genericdbmetadata.MetadataProducer.setPrimaryKey(MetadataProducer.java:275)
    at com.mycompany.components.metadata.genericdbmetadata.MetadataProducer.getListOfTables(MetadataProducer.java:241)
    at com.mycompany.components.metadata.genericdbmetadata.MetadataProducer.getTables(MetadataProducer.java:210)
    at com.mycompany.components.metadata.genericdbmetadata.MetadataProducer.getDatabase(MetadataProducer.java:88)
    at com.mycompany.components.metadata.genericdbmetadata.MetadataProducer.getMetadata(MetadataProducer.java:61)
    at com.mycompany.components.metadata.genericdbmetadata.GenericDatabaseMetadataProvider.getMetadata(GenericDatabaseMetadataProvider.java:120)
    at com.mycompany.components.DatabaseMetadataProvider.executeComponent(DatabaseMetadataProvider.java:34)
    at com.mycompany.services.GenericService.executeService(GenericService.java:92)
    at com.mycompany.services.GenericService.executeService(GenericService.java:39)
    at com.mycompany.services.MetadataProvider.doService(MetadataProvider.java:43)
    at com.mycompany.controller.EfwServicesController.service(EfwServicesController.java:112)
    at sun.reflect.GeneratedMethodAccessor415.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:601)
    at org.springframework.web.bind.annotation.support.HandlerMethodInvoker.invokeHandlerMethod(HandlerMethodInvoker.java:176)
    at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.invokeHandlerMethod(AnnotationMethodHandlerAdapter.java:436)
    at org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter.handle(AnnotationMethodHandlerAdapter.java:424)
    at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:790)
    ... 61 more