java.lang.Exception: java.lang.NoClassDefFoundError: org/apache/catalina/comet/CometProcessor
问题：
java.lang.Exception: java.lang.NoClassDefFoundError: org/apache/catalina/comet/CometProcessor
at com.apusic.deploy.runtime.J2EEApplication.startService(J2EEApplication.java:1094)
at com.apusic.service.Service.start(Service.java:205)
at com.apusic.deploy.runtime.J2EEDeployer.startUserApplications(J2EEDeployer.java:175)
at com.apusic.deploy.runtime.J2EEDeployer.startService(J2EEDeployer.java:142)
at com.apusic.service.Service.start(Service.java:205)
at sun.reflect.GeneratedMethodAccessor20.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at com.apusic.jmx.MBeanDescriptor.invoke(MBeanDescriptor.java:551)
at com.apusic.jmx.DynamicMBeanSupport.invoke(DynamicMBeanSupport.java:62)
at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(DefaultMBeanServerInterceptor.java:819)
at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(JmxMBeanServer.java:801)
at com.apusic.server.J2EEServer.start(J2EEServer.java:653)
at com.apusic.server.J2EEServer.startup(J2EEServer.java:374)
at com.apusic.server.Main.main(Main.java:35)
Caused by: java.lang.NoClassDefFoundError: org/apache/catalina/comet/CometProcessor
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:763)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
at com.apusic.util.UCPClassLoader.defineClass(UCPClassLoader.java:303)
at com.apusic.util.UCPClassLoader.access$000(UCPClassLoader.java:39)
at com.apusic.util.UCPClassLoader$1.run(UCPClassLoader.java:185)
at com.apusic.util.UCPClassLoader$1.run(UCPClassLoader.java:179)
at java.security.AccessController.doPrivileged(Native Method)
at com.apusic.util.UCPClassLoader.findClass(UCPClassLoader.java:179)
at com.apusic.web.container.ReloadableClassLoader.findClass(ReloadableClassLoader.java:294)
at com.apusic.web.container.ReloadableClassLoader.loadClassInternal(ReloadableClassLoader.java:186)
at com.apusic.web.container.ReloadableClassLoader.loadClass(ReloadableClassLoader.java:153)
at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
at com.apusic.web.container.ReloadableClassLoader.loadClassInternal(ReloadableClassLoader.java:191)
at com.apusic.web.container.ReloadableClassLoader.loadClass(ReloadableClassLoader.java:153)
at com.apusic.web.container.JSPClassLoader.loadClass(JSPClassLoader.java:97)
at com.apusic.web.container.CompositeLoaderDelegate.loadClass(CompositeLoaderDelegate.java:60)
at com.apusic.web.container.ServletClassLoader.loadClass(ServletClassLoader.java:128)
at com.apusic.web.container.ServletClassLoader.loadClass(ServletClassLoader.java:142)
at com.apusic.deploy.runtime.WebModule.getComponentClasses(WebModule.java:1193)
at com.apusic.deploy.runtime.WebModule.resolveDeclaredComponents(WebModule.java:2860)
at com.apusic.deploy.runtime.WebModule.load(WebModule.java:2080)
at com.apusic.deploy.runtime.J2EEApplication.load(J2EEApplication.java:1575)
at com.apusic.deploy.runtime.J2EEApplication.startService(J2EEApplication.java:1056)
... 14 more
排查过程：
查看日志，应用应该是使用了comet4j功能，查看到应用web.xml里面写了，然后尝试注释应用的这段代码
解决方案：
注释掉应用里面的comet4j容器监听。