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MinXie1209 / metrics

🔥🔥🔥监控指标，CPU使用情况、类加载统计、垃圾回收器回收情况、内存占用情况、线程运行情况、Tomcat线程池、JDK线程池等。 Monitor metrics, CPU usage, class load statistics, garbage collector collection, memory usage, thread running, Tomcat thread pool, JDK thread pool, etc.
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Tomcat扫描jar包失败 #8

Closed MinXie1209 closed 1 year ago

MinXie1209 commented 1 year ago

org.apache.tomcat.util.scan.StandardJarScanner.processURLs 在多级类加载器中扫描[file:/Users/minxie/IdeaProjects/metrics/agent/target/netty-resolver-dns-native-macos-4.1.72.Final-osx-aarch_64.jar]失败 java.io.FileNotFoundException: /Users/minxie/IdeaProjects/metrics/agent/target/netty-resolver-dns-native-macos-4.1.72.Final-osx-aarch_64.jar (No such file or directory) at java.util.zip.ZipFile.open(Native Method) at java.util.zip.ZipFile.(ZipFile.java:225) at java.util.zip.ZipFile.(ZipFile.java:155) at java.util.jar.JarFile.(JarFile.java:166) at java.util.jar.JarFile.(JarFile.java:130) at org.apache.tomcat.util.compat.JreCompat.jarFileNewInstance(JreCompat.java:209) at org.apache.tomcat.util.scan.JarFileUrlJar.(JarFileUrlJar.java:65) at org.apache.tomcat.util.scan.JarFactory.newInstance(JarFactory.java:49) at org.apache.tomcat.util.scan.StandardJarScanner.process(StandardJarScanner.java:387) at org.apache.tomcat.util.scan.StandardJarScanner.processURLs(StandardJarScanner.java:322) at org.apache.tomcat.util.scan.StandardJarScanner.doScanClassPath(StandardJarScanner.java:272) at org.apache.tomcat.util.scan.StandardJarScanner.scan(StandardJarScanner.java:235) at org.apache.jasper.servlet.TldScanner.scanJars(TldScanner.java:262) at org.apache.jasper.servlet.TldScanner.scan(TldScanner.java:104) at org.apache.jasper.servlet.JasperInitializer.onStartup(JasperInitializer.java:101) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5221) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183) at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:753) at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:727) at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:695) at org.apache.catalina.startup.HostConfig.manageApp(HostConfig.java:1775) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:291) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819) at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801) at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:483) at org.apache.catalina.mbeans.MBeanFactory.createStandardContext(MBeanFactory.java:431) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:291) at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819) at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801) at javax.management.remote.rmi.RMIConnectionImpl.doOperation(RMIConnectionImpl.java:1468) at javax.management.remote.rmi.RMIConnectionImpl.access$300(RMIConnectionImpl.java:76) at javax.management.remote.rmi.RMIConnectionImpl$PrivilegedOperation.run(RMIConnectionImpl.java:1309) at javax.management.remote.rmi.RMIConnectionImpl.doPrivilegedOperation(RMIConnectionImpl.java:1401) at javax.management.remote.rmi.RMIConnectionImpl.invoke(RMIConnectionImpl.java:829) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) at java.lang.reflect.Method.invoke(Method.java:498) at sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:357) at sun.rmi.transport.Transport$1.run(Transport.java:200) at sun.rmi.transport.Transport$1.run(Transport.java:197) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.Transport.serviceCall(Transport.java:196) at sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:573) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run0(TCPTransport.java:834) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.lambda$run$0(TCPTransport.java:688) at java.security.AccessController.doPrivileged(Native Method) at sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.java:687) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624) at java.lang.Thread.run(Thread.java:748)

MinXie1209 commented 1 year ago

tomcat除了加载了我们maven管理的jar包之外，还会对jar中的manifest文件进行分析，如果其中存在classpath，他会将其中的内容也添加jar包依赖中，并对这些jar包进行加载。