java.lang.NoClassDefFoundError: ch/qos/logback/classic/spi/ThrowableProxy

HELP ME!!! I have Spring boot project. i run on server Centos.I build and run success.But after run about 15 minute request server.Server die .Here my Log:

Exception in thread "http-nio-7070-exec-6" java.lang.NoClassDefFoundError: ch/qos/logback/classic/spi/ThrowableProxy
        at ch.qos.logback.classic.spi.LoggingEvent.<init>(LoggingEvent.java:119)
        at ch.qos.logback.classic.Logger.buildLoggingEventAndAppend(Logger.java:419)
        at ch.qos.logback.classic.Logger.filterAndLog_0_Or3Plus(Logger.java:383)
        at ch.qos.logback.classic.Logger.log(Logger.java:765)
        at org.slf4j.bridge.SLF4JBridgeHandler.callLocationAwareLogger(SLF4JBridgeHandler.java:221)
        at org.slf4j.bridge.SLF4JBridgeHandler.publish(SLF4JBridgeHandler.java:303)
        at java.util.logging.Logger.log(Logger.java:738)
        at java.util.logging.Logger.doLog(Logger.java:765)
        at java.util.logging.Logger.logp(Logger.java:1041)
        at org.apache.juli.logging.DirectJDKLog.log(DirectJDKLog.java:182)
        at org.apache.juli.logging.DirectJDKLog.error(DirectJDKLog.java:148)
        at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1531)
        at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1458)
        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)

[aalku]

I also think this is an issue of spring boot itself. I’m getting this error with a repackaged runnable jar with ZIP layout and that class is in classpath at compile time because I have spring-boot-starter-logging dependency. The class is in .m2\repository\ch\qos\logback\logback-classic\1.1.11\logback-classic-1.1.11.jar and it is on the repackaged jar at \BOOT-INF\lib\ but the class loader cannot find it. I’m using spring-boot 1.5.10.RELEASE

I get:

Exception in thread "xxxThread" java.lang.NoClassDefFoundError: ch/qos/logback/classic/spi/ThrowableProxy
        at ch.qos.logback.classic.spi.LoggingEvent.<init>(LoggingEvent.java:119)
        at ch.qos.logback.classic.Logger.buildLoggingEventAndAppend(Logger.java:419)
        at ch.qos.logback.classic.Logger.filterAndLog_0_Or3Plus(Logger.java:383)
        at ch.qos.logback.classic.Logger.log(Logger.java:765)
        at org.apache.commons.logging.impl.SLF4JLocationAwareLog.error(SLF4JLocationAwareLog.java:216)
        at xxxx(xxxx.java:119)
        at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.ClassNotFoundException: ch.qos.logback.classic.spi.ThrowableProxy
        at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
        at org.springframework.boot.loader.LaunchedURLClassLoader.loadClass(LaunchedURLClassLoader.java:94)
        at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
        ... 7 more

LoggingEvent and ThrowableProxy are inside the same jar so if one is loaded and can’t see the other class loaded I think it means the former was loaded before some error with the class loader that can’t now load the second one when it’s needed.

Maybe I need to run this on startup so the class gets loaded:

log.debug("this is really not an error, it's just to initialize the logging subsystem before the classLoader fails", new RuntimeException());

Please help with this issue.

[wilkinsona]

Thanks for getting in touch, but it feels like this is a question that would be better suited to Stack Overflow. As mentioned in the guidelines for contributing, we prefer to use GitHub issues only for bugs and enhancements. Feel free to update this issue with a link to the re-posted question (so that other people can find it) or add some more details if you feel this is a genuine bug.

You might also like to try Googling the error. It throws up this thread on the Logback user list, for example.