Spring Boot应用程序内部的内部tomcat停止响应呼叫

Question

我们有一个带有tomcat的spring boot Web应用程序。该应用程序可以正确启动并响应请求，但是一段时间后，当Java进程处于活动状态时，tomcat停止响应请求。通过以下pom配置添加所有与log4j相关的依赖项

<dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-log4j2</artifactId>
        </dependency>

但是我在控制台中看到以下错误，

[线程“ http-nio-8034-Acceptor-0”中的异常”java.lang.NoClassDefFoundError：org / apache / logging / log4j / core / impl / ThrowableProxy位于org.apache.logging.log4j.core.impl.Log4jLogEvent.getThrownProxy（Log4jLogEvent.java:555）在org.apache.logging.log4j.core.pattern.ExtendedThrowablePatternConverter.format（ExtendedThrowablePatternConverter.java:61）在org.apache.logging.log4j.core.pattern.PatternFormatter.format（PatternFormatter.java:38）在org.apache.logging.log4j.core.layout.PatternLayout $ PatternSerializer.toSerializable（PatternLayout.java:294）在org.apache.logging.log4j.core.layout.PatternLayout.toText（PatternLayout.java:195）在org.apache.logging.log4j.core.layout.PatternLayout.encode（PatternLayout.java:180）在org.apache.logging.log4j.core.layout.PatternLayout.encode（PatternLayout.java:57）在org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.directEncodeEvent（AbstractOutputStreamAppender.java:176）在org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.tryAppend（AbstractOutputStreamAppender.java:169）在org.apache.logging.log4j.core.appender.AbstractOutputStreamAppender.append（AbstractOutputStreamAppender.java:160）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:447）在org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent（LoggerConfig.java:432）在org.apache.logging.log4j.core.config.LoggerConfig.log（LoggerConfig.java:416）在org.apache.logging.log4j.core.config.LoggerConfig.log（LoggerConfig.java:402）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.apache.logging.slf4j.Log4jLogger.log（Log4jLogger.java:376）处org.slf4j.bridge.SLF4JBridgeHandler.callLocationAwareLogger（SLF4JBridgeHandler.java:221）在org.slf4j.bridge.SLF4JBridgeHandler.publish（SLF4JBridgeHandler.java:303）在java.util.logging.Logger.log（Logger.java:738）处java.util.logging.Logger.doLog（Logger.java:765）在java.util.logging.Logger.logp（Logger.java:1042）在org.apache.juli.logging.DirectJDKLog.log（DirectJDKLog.java:181）在org.apache.juli.logging.DirectJDKLog.error（DirectJDKLog.java:147）在org.apache.tomcat.util.net.NioEndpoint $ Acceptor.run（NioEndpoint.java:481）在java.lang.Thread.run（Thread.java:748）造成原因：java.lang.ClassNotFoundException：org.apache.logging.log4j.core.impl.ThrowableProxy位于java.net.URLClassLoader.findClass（URLClassLoader.java:381）在java.lang.ClassLoader.loadClass（ClassLoader.java:424）在org.springframework.boot.loader.LaunchedURLClassLoader.loadClass（LaunchedURLClassLoader.java:94）在java.lang.ClassLoader.loadClass（ClassLoader.java:357）... 30个以上

我监视了VM的CPU，内存统计信息，一切看起来都很好。无法弄清楚为什么tomcat无法响应。

Answer 1

找到了此问题的原因。春天的这个错误与春天寻找静态文件的方式有关。

tomcat中的错误并没有给我们一个线索，但是在另一个VM中也发生了相同的错误，但是还有一些额外的日志，上面写着“打开文件太多”，这有助于找到原因。

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