java - 为什么从服务器启动时出现 "Failed to define class"WARN？

标签 java logging jboss liquibase

当我在 JBoss 中执行 liquibase 时，我收到以下警告，但一切都已正确更新:

12:32:01,499 WARN  [org.jboss.modules] (ServerService Thread Pool -- 49) Failed to define class liquibase.sdk.watch.WatchCommand$DynamicContentHandler in Module "deployment.WebStories.war:main" from Service Module Loader: java.lang.LinkageError: Failed to link liquibase/sdk/watch/WatchCommand$DynamicContentHandler (Module "deployment.WebStories.war:main" from Service Module Loader)
    at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:407) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ModuleClassLoader.loadClassLocal(ModuleClassLoader.java:254) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ModuleClassLoader$1.loadClassLocal(ModuleClassLoader.java:73) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.Module.loadModuleClass(Module.java:518) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:182) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:468) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:456) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:120) [jboss-modules.jar:1.2.0.CR1]
    at liquibase.servicelocator.DefaultPackageScanClassResolver.loadClass(DefaultPackageScanClassResolver.java:358) [liquibase-core-3.2.2.jar:]
    at liquibase.servicelocator.DefaultPackageScanClassResolver.loadImplementationsInJar(DefaultPackageScanClassResolver.java:406) [liquibase-core-3.2.2.jar:]
    at liquibase.servicelocator.DefaultPackageScanClassResolver.findAllClasses(DefaultPackageScanClassResolver.java:226) [liquibase-core-3.2.2.jar:]
    at liquibase.servicelocator.DefaultPackageScanClassResolver.find(DefaultPackageScanClassResolver.java:116) [liquibase-core-3.2.2.jar:]
    at liquibase.servicelocator.DefaultPackageScanClassResolver.findImplementations(DefaultPackageScanClassResolver.java:84) [liquibase-core-3.2.2.jar:]
    at liquibase.servicelocator.ServiceLocator.findClassesImpl(ServiceLocator.java:202) [liquibase-core-3.2.2.jar:]
    at liquibase.servicelocator.ServiceLocator.findClasses(ServiceLocator.java:177) [liquibase-core-3.2.2.jar:]
    at liquibase.database.DatabaseFactory.<init>(DatabaseFactory.java:25) [liquibase-core-3.2.2.jar:]
    at liquibase.database.DatabaseFactory.getInstance(DatabaseFactory.java:40) [liquibase-core-3.2.2.jar:]
    at liquibase.integration.servlet.LiquibaseServletListener.executeUpdate(LiquibaseServletListener.java:211) [liquibase-core-3.2.2.jar:]
    at liquibase.integration.servlet.LiquibaseServletListener.contextInitialized(LiquibaseServletListener.java:106) [liquibase-core-3.2.2.jar:]
    at org.apache.catalina.core.StandardContext.contextListenerStart(StandardContext.java:3339) [jbossweb-7.2.0.Final.jar:7.2.0.Final]
    at org.apache.catalina.core.StandardContext.start(StandardContext.java:3777) [jbossweb-7.2.0.Final.jar:7.2.0.Final]
    at org.jboss.as.web.deployment.WebDeploymentService.doStart(WebDeploymentService.java:156) [jboss-as-web-7.2.0.Alpha1-redhat-4.jar:7.2.0.Alpha1-redhat-4]
    at org.jboss.as.web.deployment.WebDeploymentService.access$000(WebDeploymentService.java:60) [jboss-as-web-7.2.0.Alpha1-redhat-4.jar:7.2.0.Alpha1-redhat-4]
    at org.jboss.as.web.deployment.WebDeploymentService$1.run(WebDeploymentService.java:93) [jboss-as-web-7.2.0.Alpha1-redhat-4.jar:7.2.0.Alpha1-redhat-4]
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) [rt.jar:1.7.0_11]
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) [rt.jar:1.7.0_11]
    at java.util.concurrent.FutureTask.run(FutureTask.java:166) [rt.jar:1.7.0_11]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) [rt.jar:1.7.0_11]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) [rt.jar:1.7.0_11]
    at java.lang.Thread.run(Thread.java:722) [rt.jar:1.7.0_11]
    at org.jboss.threads.JBossThread.run(JBossThread.java:122)
Caused by: java.lang.NoClassDefFoundError: org/eclipse/jetty/server/handler/AbstractHandler
    at java.lang.ClassLoader.defineClass1(Native Method) [rt.jar:1.7.0_11]
    at java.lang.ClassLoader.defineClass(ClassLoader.java:791) [rt.jar:1.7.0_11]
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) [rt.jar:1.7.0_11]
    at org.jboss.modules.ModuleClassLoader.doDefineOrLoadClass(ModuleClassLoader.java:338) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:402) [jboss-modules.jar:1.2.0.CR1]
    ... 31 more
Caused by: java.lang.ClassNotFoundException: org.eclipse.jetty.server.handler.AbstractHandler from [Module "deployment.WebStories.war:main" from Service Module Loader]
    at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:190) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:468) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:456) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:120) [jboss-modules.jar:1.2.0.CR1]
    ... 36 more

12:32:01,532 WARN  [org.jboss.modules] (ServerService Thread Pool -- 49) Failed to define class liquibase.sdk.supplier.database.AllDatabaseTypes in Module "deployment.WebStories.war:main" from Service Module Loader: java.lang.LinkageError: Failed to link liquibase/sdk/supplier/database/AllDatabaseTypes (Module "deployment.WebStories.war:main" from Service Module Loader)
    at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:407) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ModuleClassLoader.loadClassLocal(ModuleClassLoader.java:254) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ModuleClassLoader$1.loadClassLocal(ModuleClassLoader.java:73) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.Module.loadModuleClass(Module.java:518) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:182) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:468) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:456) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:120) [jboss-modules.jar:1.2.0.CR1]
    at liquibase.servicelocator.DefaultPackageScanClassResolver.loadClass(DefaultPackageScanClassResolver.java:358) [liquibase-core-3.2.2.jar:]
    at liquibase.servicelocator.DefaultPackageScanClassResolver.loadImplementationsInJar(DefaultPackageScanClassResolver.java:406) [liquibase-core-3.2.2.jar:]
    at liquibase.servicelocator.DefaultPackageScanClassResolver.findAllClasses(DefaultPackageScanClassResolver.java:226) [liquibase-core-3.2.2.jar:]
    at liquibase.servicelocator.DefaultPackageScanClassResolver.find(DefaultPackageScanClassResolver.java:116) [liquibase-core-3.2.2.jar:]
    at liquibase.servicelocator.DefaultPackageScanClassResolver.findImplementations(DefaultPackageScanClassResolver.java:84) [liquibase-core-3.2.2.jar:]
    at liquibase.servicelocator.ServiceLocator.findClassesImpl(ServiceLocator.java:202) [liquibase-core-3.2.2.jar:]
    at liquibase.servicelocator.ServiceLocator.findClasses(ServiceLocator.java:177) [liquibase-core-3.2.2.jar:]
    at liquibase.database.DatabaseFactory.<init>(DatabaseFactory.java:25) [liquibase-core-3.2.2.jar:]
    at liquibase.database.DatabaseFactory.getInstance(DatabaseFactory.java:40) [liquibase-core-3.2.2.jar:]
    at liquibase.integration.servlet.LiquibaseServletListener.executeUpdate(LiquibaseServletListener.java:211) [liquibase-core-3.2.2.jar:]
    at liquibase.integration.servlet.LiquibaseServletListener.contextInitialized(LiquibaseServletListener.java:106) [liquibase-core-3.2.2.jar:]
    at org.apache.catalina.core.StandardContext.contextListenerStart(StandardContext.java:3339) [jbossweb-7.2.0.Final.jar:7.2.0.Final]
    at org.apache.catalina.core.StandardContext.start(StandardContext.java:3777) [jbossweb-7.2.0.Final.jar:7.2.0.Final]
    at org.jboss.as.web.deployment.WebDeploymentService.doStart(WebDeploymentService.java:156) [jboss-as-web-7.2.0.Alpha1-redhat-4.jar:7.2.0.Alpha1-redhat-4]
    at org.jboss.as.web.deployment.WebDeploymentService.access$000(WebDeploymentService.java:60) [jboss-as-web-7.2.0.Alpha1-redhat-4.jar:7.2.0.Alpha1-redhat-4]
    at org.jboss.as.web.deployment.WebDeploymentService$1.run(WebDeploymentService.java:93) [jboss-as-web-7.2.0.Alpha1-redhat-4.jar:7.2.0.Alpha1-redhat-4]
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) [rt.jar:1.7.0_11]
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) [rt.jar:1.7.0_11]
    at java.util.concurrent.FutureTask.run(FutureTask.java:166) [rt.jar:1.7.0_11]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) [rt.jar:1.7.0_11]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) [rt.jar:1.7.0_11]
    at java.lang.Thread.run(Thread.java:722) [rt.jar:1.7.0_11]
    at org.jboss.threads.JBossThread.run(JBossThread.java:122)
Caused by: java.lang.NoClassDefFoundError: org/junit/experimental/theories/ParameterSupplier
    at java.lang.ClassLoader.defineClass1(Native Method) [rt.jar:1.7.0_11]
    at java.lang.ClassLoader.defineClass(ClassLoader.java:791) [rt.jar:1.7.0_11]
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) [rt.jar:1.7.0_11]
    at org.jboss.modules.ModuleClassLoader.doDefineOrLoadClass(ModuleClassLoader.java:338) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:402) [jboss-modules.jar:1.2.0.CR1]
    ... 31 more
Caused by: java.lang.ClassNotFoundException: org.junit.experimental.theories.ParameterSupplier from [Module "deployment.WebStories.war:main" from Service Module Loader]
    at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:190) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:468) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:456) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:120) [jboss-modules.jar:1.2.0.CR1]
    ... 36 more

12:32:01,546 WARN  [org.jboss.modules] (ServerService Thread Pool -- 49) Failed to define class liquibase.sdk.supplier.database.AllDatabases in Module "deployment.WebStories.war:main" from Service Module Loader: java.lang.LinkageError: Failed to link liquibase/sdk/supplier/database/AllDatabases (Module "deployment.WebStories.war:main" from Service Module Loader)
    at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:407) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ModuleClassLoader.loadClassLocal(ModuleClassLoader.java:254) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ModuleClassLoader$1.loadClassLocal(ModuleClassLoader.java:73) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.Module.loadModuleClass(Module.java:518) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:182) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:468) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:456) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:120) [jboss-modules.jar:1.2.0.CR1]
    at liquibase.servicelocator.DefaultPackageScanClassResolver.loadClass(DefaultPackageScanClassResolver.java:358) [liquibase-core-3.2.2.jar:]
    at liquibase.servicelocator.DefaultPackageScanClassResolver.loadImplementationsInJar(DefaultPackageScanClassResolver.java:406) [liquibase-core-3.2.2.jar:]
    at liquibase.servicelocator.DefaultPackageScanClassResolver.findAllClasses(DefaultPackageScanClassResolver.java:226) [liquibase-core-3.2.2.jar:]
    at liquibase.servicelocator.DefaultPackageScanClassResolver.find(DefaultPackageScanClassResolver.java:116) [liquibase-core-3.2.2.jar:]
    at liquibase.servicelocator.DefaultPackageScanClassResolver.findImplementations(DefaultPackageScanClassResolver.java:84) [liquibase-core-3.2.2.jar:]
    at liquibase.servicelocator.ServiceLocator.findClassesImpl(ServiceLocator.java:202) [liquibase-core-3.2.2.jar:]
    at liquibase.servicelocator.ServiceLocator.findClasses(ServiceLocator.java:177) [liquibase-core-3.2.2.jar:]
    at liquibase.database.DatabaseFactory.<init>(DatabaseFactory.java:25) [liquibase-core-3.2.2.jar:]
    at liquibase.database.DatabaseFactory.getInstance(DatabaseFactory.java:40) [liquibase-core-3.2.2.jar:]
    at liquibase.integration.servlet.LiquibaseServletListener.executeUpdate(LiquibaseServletListener.java:211) [liquibase-core-3.2.2.jar:]
    at liquibase.integration.servlet.LiquibaseServletListener.contextInitialized(LiquibaseServletListener.java:106) [liquibase-core-3.2.2.jar:]
    at org.apache.catalina.core.StandardContext.contextListenerStart(StandardContext.java:3339) [jbossweb-7.2.0.Final.jar:7.2.0.Final]
    at org.apache.catalina.core.StandardContext.start(StandardContext.java:3777) [jbossweb-7.2.0.Final.jar:7.2.0.Final]
    at org.jboss.as.web.deployment.WebDeploymentService.doStart(WebDeploymentService.java:156) [jboss-as-web-7.2.0.Alpha1-redhat-4.jar:7.2.0.Alpha1-redhat-4]
    at org.jboss.as.web.deployment.WebDeploymentService.access$000(WebDeploymentService.java:60) [jboss-as-web-7.2.0.Alpha1-redhat-4.jar:7.2.0.Alpha1-redhat-4]
    at org.jboss.as.web.deployment.WebDeploymentService$1.run(WebDeploymentService.java:93) [jboss-as-web-7.2.0.Alpha1-redhat-4.jar:7.2.0.Alpha1-redhat-4]
    at java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471) [rt.jar:1.7.0_11]
    at java.util.concurrent.FutureTask$Sync.innerRun(FutureTask.java:334) [rt.jar:1.7.0_11]
    at java.util.concurrent.FutureTask.run(FutureTask.java:166) [rt.jar:1.7.0_11]
    at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1110) [rt.jar:1.7.0_11]
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:603) [rt.jar:1.7.0_11]
    at java.lang.Thread.run(Thread.java:722) [rt.jar:1.7.0_11]
    at org.jboss.threads.JBossThread.run(JBossThread.java:122)
Caused by: java.lang.NoClassDefFoundError: org/junit/experimental/theories/ParameterSupplier
    at java.lang.ClassLoader.defineClass1(Native Method) [rt.jar:1.7.0_11]
    at java.lang.ClassLoader.defineClass(ClassLoader.java:791) [rt.jar:1.7.0_11]
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142) [rt.jar:1.7.0_11]
    at org.jboss.modules.ModuleClassLoader.doDefineOrLoadClass(ModuleClassLoader.java:338) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ModuleClassLoader.defineClass(ModuleClassLoader.java:402) [jboss-modules.jar:1.2.0.CR1]
    ... 31 more
Caused by: java.lang.ClassNotFoundException: org.junit.experimental.theories.ParameterSupplier from [Module "deployment.WebStories.war:main" from Service Module Loader]
    at org.jboss.modules.ModuleClassLoader.findClass(ModuleClassLoader.java:190) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClassUnchecked(ConcurrentClassLoader.java:468) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClassChecked(ConcurrentClassLoader.java:456) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ConcurrentClassLoader.performLoadClass(ConcurrentClassLoader.java:398) [jboss-modules.jar:1.2.0.CR1]
    at org.jboss.modules.ConcurrentClassLoader.loadClass(ConcurrentClassLoader.java:120) [jboss-modules.jar:1.2.0.CR1]
    ... 36 more

12:32:01,652 ERROR [stderr] (ServerService Thread Pool -- 49) INFO 23/10/14 12:32: liquibase: Successfully acquired change log lock

12:32:02,336 ERROR [stderr] (ServerService Thread Pool -- 49) INFO 23/10/14 12:32: liquibase: Reading from public.databasechangelog

12:32:02,383 ERROR [stderr] (ServerService Thread Pool -- 49) INFO 23/10/14 12:32: liquibase: Successfully released change log lock

服务器启动中的任何堆栈跟踪都被视为错误，尽管它被标记为 WARN、INFO 或 NOTHING。

为什么会这样？
我该怎么做才能从服务器启动中删除此堆栈跟踪？

最佳答案

Liquibase 使用您的类加载器在内部扫描您的类路径，以查找可能是 Liquibase 扩展的类。该扫描的一部分是命中一些与 liquibase jar 捆绑在一起但不属于正常 liquibase 更新 过程的类。

特别是，它正在检查显示数据库和 liquibase 状态的代码，这有助于演示和故障排除以及可用于测试扩展的其他代码。

这些非标准使用类引用额外的依赖项，例如 jetty 和 junit，它们通常在生产环境中不可用，因此 Liquibase 期望一些 ClassNotFoundExceptions 和 DEBUG 级别记录它们，继续前进，并正确更新，如您所见。

在您的情况下，JBoss 类加载器似乎有一个额外的功能，可以在 WARN 级别记录它遇到的任何 ClassNotFoundExceptions 并将其向上抛出到 Liquibase 忽略它的程度。

Liquibase 的 future 版本将更好地划分“工具”代码库和“标准”代码库，但目前您的选择是:

  • 在类路径中包含缺失的依赖项(基于堆栈跟踪的 Jetty 和 junit)
  • 创建足够多的与引用的 jetty 和 junit 类同名的 stub 类，以使类加载器满意。
  • 将“org.jboss.modules”的日志级别设置为 ERROR，以便不记录 WARN 级别的日志

关于java - 为什么从服务器启动时出现 "Failed to define class"WARN？，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/26530677/

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