我有一个使用logback和slf4j的osgi 6.0.0项目。
目前，我正在实现一个捆绑包，该捆绑包取决于使用org.apache.logging.log4j
在命令行执行期间，我的karaf控制台通过显示此错误而冻结了捆绑包：
线程“ Karaf本地控制台用户karaf”中的异常java.lang.NoClassDefFoundError：org / apache / logging / log4j / util / ReflectionUtil在org.apache.logging.log4j.core.impl.ThrowableProxy。（ThrowableProxy.java:145）在org.apache.logging.log4j.core.impl.ThrowableProxy。（ThrowableProxy.java:125）在org.apache.logging.log4j.core.impl.MutableLogEvent.getThrownProxy（MutableLogEvent.java:338）在org.ops4j.pax.logging.log4j2.internal.PaxLoggingEventImpl.getThrowableStrRep（PaxLoggingEventImpl.java:76）在org.apache.karaf.log.core.internal.KarafLogEvent。（KarafLogEvent.java:45）在org.apache.karaf.log.core.internal.LogServiceImpl.doAppend（LogServiceImpl.java:177）在org.ops4j.pax.logging.log4j2.internal.PaxAppenderProxy.doAppend（PaxAppenderProxy.java:65）在org.ops4j.pax.logging.log4j2.appender.PaxOsgiAppender.append（PaxOsgiAppender.java:82）在org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender（AppenderControl.java:156）在org.apache.logging.log4j.core.config.AppenderControl.callAppender0（AppenderControl.java:129）在org.apache.logging.log4j.core.config.AppenderControl.callAppenderPreventRecursion（AppenderControl.java:120）在org.apache.logging.log4j.core.config.AppenderControl.callAppender（AppenderControl.java:84）在org.apache.logging.log4j.core.config.LoggerConfig.callAppenders（LoggerConfig.java:448）在org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent（LoggerConfig.java:433）在org.apache.logging.log4j.core.config.LoggerConfig.log（LoggerConfig.java:417）在org.apache.logging.log4j.core.config.LoggerConfig.log（LoggerConfig.java:403）在org.apache.logging.log4j.core.config.AwaitCompletionReliabilityStrategy.log（AwaitCompletionReliabilityStrategy.java:63）在org.apache.logging.log4j.core.Logger.logMessage（Logger.java:146）在org.ops4j.pax.logging.log4j2.internal.PaxLoggerImpl.doLog0（PaxLoggerImpl.java:151）在org.ops4j.pax.logging.log4j2.internal.PaxLoggerImpl.doLog（PaxLoggerImpl.java:144）在org.ops4j.pax.logging.log4j2.internal.PaxLoggerImpl.error（PaxLoggerImpl.java:192）在org.ops4j.pax.logging.internal.TrackingLogger.error（TrackingLogger.java:96）在org.ops4j.pax.logging.slf4j.Slf4jLogger.error（Slf4jLogger.java:953）在org.apache.karaf.shell.support.ShellUtil.logException（ShellUtil.java:152）在org.apache.karaf.shell.impl.console.ConsoleSessionImpl.doExecute（ConsoleSessionImpl.java:474）在org.apache.karaf.shell.impl.console.ConsoleSessionImpl.run（ConsoleSessionImpl.java:407）在java.lang.Thread.run（Thread.java:748）由以下原因引起：java.lang.ClassNotFoundException：org.apache.logging.log4j.api未找到org.apache.logging.log4j.util.ReflectionUtil [112]在org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation（BundleWiringImpl.java:1639）at org.apache.felix.framework.BundleWiringImpl.access $ 200（BundleWiringImpl.java:80）在org.apache.felix.framework.BundleWiringImpl $ BundleClassLoader.loadClass（BundleWiringImpl.java:2053）在java.lang.ClassLoader.loadClass（ClassLoader.java:357）在org.apache.felix.framework.BundleWiringImpl.getClassByDelegation（BundleWiringImpl.java:1414）在org.apache.felix.framework.BundleWiringImpl.searchImports（BundleWiringImpl.java:1660）在org.apache.felix.framework.BundleWiringImpl.findClassOrResourceByDelegation（BundleWiringImpl.java:1590）at org.apache.felix.framework.BundleWiringImpl.access $ 200（BundleWiringImpl.java:80）在org.apache.felix.framework.BundleWiringImpl $ BundleClassLoader.loadClass（BundleWiringImpl.java:2053）在java.lang.ClassLoader.loadClass（ClassLoader.java:357）... 27更多
我找到了解决方案，从2.9.0版开始，类org / apache / logging / log4j / util / ReflectionUtil不再存在。我只需要使用低于此版本的版本即可