Il server Tomcat non si avvia in eclissi a causa del servlet

Question

Sto scrivendo un programma che analizza un file XML in oggetti java usando smooks. Mi è stato chiesto di eseguirlo come un servlet. L'applicazione (prima di essere convertita in servlet) ha funzionato bene, ma il server tomcat si blocca ogni volta che provo ad eseguirlo. Ora ho eseguito un servlet di esempio senza problemi.

Ecco la console all'avvio:

Jun 11, 2012 3:46:59 PM org.apache.catalina.core.AprLifecycleListener init 
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jre7\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;"C:\Program Files (x86)\Common Files\EMC";C:\PROGRA~2\COMMON~1\EMC;. 
Jun 11, 2012 3:46:59 PM org.apache.tomcat.util.digester.SetPropertiesRule begin 
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:Serverlet' did not find a matching property. 
Jun 11, 2012 3:46:59 PM org.apache.coyote.AbstractProtocol init 
INFO: Initializing ProtocolHandler ["http-bio-8080"] 
Jun 11, 2012 3:46:59 PM org.apache.coyote.AbstractProtocol init 
INFO: Initializing ProtocolHandler ["ajp-bio-8009"] 
Jun 11, 2012 3:46:59 PM org.apache.catalina.startup.Catalina load 
INFO: Initialization processed in 966 ms 
Jun 11, 2012 3:46:59 PM org.apache.catalina.core.StandardService startInternal 
INFO: Starting service Catalina 
Jun 11, 2012 3:46:59 PM org.apache.catalina.core.StandardEngine startInternal 
INFO: Starting Servlet Engine: Apache Tomcat/7.0.27 
Jun 11, 2012 3:47:00 PM org.apache.catalina.util.SessionIdGenerator createSecureRandom 
INFO: Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [156] milliseconds. 
Jun 11, 2012 3:47:01 PM org.apache.catalina.core.ContainerBase startInternal 
SEVERE: A child container failed during start 
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/Serverlet]] 
    at java.util.concurrent.FutureTask$Sync.innerGet(Unknown Source) 
    at java.util.concurrent.FutureTask.get(Unknown Source) 
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1128) 
    at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:782) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1566) 
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1556) 
    at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) 
    at java.util.concurrent.FutureTask.run(Unknown Source) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
    at java.lang.Thread.run(Unknown Source) 
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/Serverlet]] 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) 
    ... 7 more 
Caused by: org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 60 
    at org.apache.tomcat.util.bcel.classfile.Constant.readConstant(Constant.java:131) 
    at org.apache.tomcat.util.bcel.classfile.ConstantPool.<init>(ConstantPool.java:60) 
    at org.apache.tomcat.util.bcel.classfile.ClassParser.readConstantPool(ClassParser.java:209) 
    at org.apache.tomcat.util.bcel.classfile.ClassParser.parse(ClassParser.java:119) 
    at org.apache.catalina.startup.ContextConfig.processAnnotationsStream(ContextConfig.java:2032) 
    at org.apache.catalina.startup.ContextConfig.processAnnotationsJar(ContextConfig.java:1923) 
    at org.apache.catalina.startup.ContextConfig.processAnnotationsUrl(ContextConfig.java:1891) 
    at org.apache.catalina.startup.ContextConfig.processAnnotations(ContextConfig.java:1877) 
    at org.apache.catalina.startup.ContextConfig.webConfig(ContextConfig.java:1270) 
    at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:855) 
    at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:345) 
    at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) 
    at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90) 
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5161) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    ... 7 more 

Jun 11, 2012 3:47:01 PM org.apache.catalina.core.ContainerBase startInternal 
SEVERE: A child container failed during start 
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]] 
    at java.util.concurrent.FutureTask$Sync.innerGet(Unknown Source) 
    at java.util.concurrent.FutureTask.get(Unknown Source) 
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1128) 
    at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:302) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    at org.apache.catalina.core.StandardService.startInternal(StandardService.java:443) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:732) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    at org.apache.catalina.startup.Catalina.start(Catalina.java:675) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
    at java.lang.reflect.Method.invoke(Unknown Source) 
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:322) 
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:450) 
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]] 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) 
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1566) 
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1556) 
    at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) 
    at java.util.concurrent.FutureTask.run(Unknown Source) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
    at java.lang.Thread.run(Unknown Source) 
Caused by: org.apache.catalina.LifecycleException: A child container failed during start 
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1136) 
    at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:782) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    ... 7 more 

Jun 11, 2012 3:47:01 PM org.apache.catalina.startup.Catalina start 
SEVERE: Catalina.start: 
org.apache.catalina.LifecycleException: Failed to start component [StandardServer[8005]] 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) 
    at org.apache.catalina.startup.Catalina.start(Catalina.java:675) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
    at java.lang.reflect.Method.invoke(Unknown Source) 
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:322) 
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:450) 
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardService[Catalina]] 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) 
    at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:732) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    ... 7 more 
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina]] 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) 
    at org.apache.catalina.core.StandardService.startInternal(StandardService.java:443) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    ... 9 more 
Caused by: org.apache.catalina.LifecycleException: A child container failed during start 
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1136) 
    at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:302) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    ... 11 more 

ogni pensiero?

---

ho riscritto il programma senza alcun risultato, tuttavia l'errore di cui parlavi prima ("tag byte non valida in piscina costante") è andato. questa volta, non c'è nulla nella mia cartella WEB_INF/lib.

Jun 12, 2012 11:30:30 AM org.apache.catalina.core.AprLifecycleListener init 
INFO: The APR based Apache Tomcat Native library which allows optimal performance in production environments was not found on the java.library.path: C:\Program Files\Java\jre7\bin;C:\Windows\Sun\Java\bin;C:\Windows\system32;C:\Windows;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0\;"C:\Program Files (x86)\Common Files\EMC";C:\PROGRA~2\COMMON~1\EMC;. 
Jun 12, 2012 11:30:31 AM org.apache.tomcat.util.digester.SetPropertiesRule begin 
WARNING: [SetPropertiesRule]{Server/Service/Engine/Host/Context} Setting property 'source' to 'org.eclipse.jst.jee.server:SecondTry' did not find a matching property. 
Jun 12, 2012 11:30:31 AM org.apache.coyote.AbstractProtocol init 
INFO: Initializing ProtocolHandler ["http-bio-8080"] 
Jun 12, 2012 11:30:31 AM org.apache.coyote.AbstractProtocol init 
INFO: Initializing ProtocolHandler ["ajp-bio-8009"] 
Jun 12, 2012 11:30:31 AM org.apache.catalina.startup.Catalina load 
INFO: Initialization processed in 1265 ms 
Jun 12, 2012 11:30:31 AM org.apache.catalina.core.StandardService startInternal 
INFO: Starting service Catalina 
Jun 12, 2012 11:30:31 AM org.apache.catalina.core.StandardEngine startInternal 
INFO: Starting Servlet Engine: Apache Tomcat/7.0.27 
Jun 12, 2012 11:30:32 AM org.apache.catalina.core.ContainerBase startInternal 
SEVERE: A child container failed during start 
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/SecondTry]] 
    at java.util.concurrent.FutureTask$Sync.innerGet(Unknown Source) 
    at java.util.concurrent.FutureTask.get(Unknown Source) 
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1128) 
    at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:782) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1566) 
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1556) 
    at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) 
    at java.util.concurrent.FutureTask.run(Unknown Source) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
    at java.lang.Thread.run(Unknown Source) 
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/SecondTry]] 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) 
    ... 7 more 
Caused by: java.lang.NoClassDefFoundError: org/milyn/SmooksException 
    at java.lang.Class.getDeclaredMethods0(Native Method) 
    at java.lang.Class.privateGetDeclaredMethods(Unknown Source) 
    at java.lang.Class.getDeclaredMethods(Unknown Source) 
    at org.apache.catalina.startup.WebAnnotationSet.getDeclaredMethods(WebAnnotationSet.java:470) 
    at org.apache.catalina.startup.WebAnnotationSet.loadMethodsAnnotation(WebAnnotationSet.java:275) 
    at org.apache.catalina.startup.WebAnnotationSet.loadApplicationServletAnnotations(WebAnnotationSet.java:137) 
    at org.apache.catalina.startup.WebAnnotationSet.loadApplicationAnnotations(WebAnnotationSet.java:66) 
    at org.apache.catalina.startup.ContextConfig.applicationAnnotationsConfig(ContextConfig.java:381) 
    at org.apache.catalina.startup.ContextConfig.configureStart(ContextConfig.java:858) 
    at org.apache.catalina.startup.ContextConfig.lifecycleEvent(ContextConfig.java:345) 
    at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119) 
    at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90) 
    at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5161) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    ... 7 more 
Caused by: java.lang.ClassNotFoundException: org.milyn.SmooksException 
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1711) 
    at org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1556) 
    ... 21 more 

Jun 12, 2012 11:30:32 AM org.apache.catalina.core.ContainerBase startInternal 
SEVERE: A child container failed during start 
java.util.concurrent.ExecutionException: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]] 
    at java.util.concurrent.FutureTask$Sync.innerGet(Unknown Source) 
    at java.util.concurrent.FutureTask.get(Unknown Source) 
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1128) 
    at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:302) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    at org.apache.catalina.core.StandardService.startInternal(StandardService.java:443) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:732) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    at org.apache.catalina.startup.Catalina.start(Catalina.java:675) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
    at java.lang.reflect.Method.invoke(Unknown Source) 
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:322) 
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:450) 
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost]] 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) 
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1566) 
    at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1556) 
    at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source) 
    at java.util.concurrent.FutureTask.run(Unknown Source) 
    at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source) 
    at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) 
    at java.lang.Thread.run(Unknown Source) 
Caused by: org.apache.catalina.LifecycleException: A child container failed during start 
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1136) 
    at org.apache.catalina.core.StandardHost.startInternal(StandardHost.java:782) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    ... 7 more 

Jun 12, 2012 11:30:32 AM org.apache.catalina.startup.Catalina start 
SEVERE: Catalina.start: 
org.apache.catalina.LifecycleException: Failed to start component [StandardServer[8005]] 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) 
    at org.apache.catalina.startup.Catalina.start(Catalina.java:675) 
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) 
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) 
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) 
    at java.lang.reflect.Method.invoke(Unknown Source) 
    at org.apache.catalina.startup.Bootstrap.start(Bootstrap.java:322) 
    at org.apache.catalina.startup.Bootstrap.main(Bootstrap.java:450) 
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardService[Catalina]] 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) 
    at org.apache.catalina.core.StandardServer.startInternal(StandardServer.java:732) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    ... 7 more 
Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina]] 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154) 
    at org.apache.catalina.core.StandardService.startInternal(StandardService.java:443) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    ... 9 more 
Caused by: org.apache.catalina.LifecycleException: A child container failed during start 
    at org.apache.catalina.core.ContainerBase.startInternal(ContainerBase.java:1136) 
    at org.apache.catalina.core.StandardEngine.startInternal(StandardEngine.java:302) 
    at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) 
    ... 11 more 

Jun 12, 2012 11:30:32 AM org.apache.catalina.startup.Catalina start 
INFO: Server startup in 810 ms 

Answer 1

org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 60 

Questo può avere diverse cause che sono tutti collegati ad una versione Servlet API incompatibile in uso durante la costruzione.

Molto probabilmente si dispone di un file JAR specifico di un servlet contenente il file come servlet-api.jar o più da un contenitore di servlet arbitrario di una marca/versione diversa nella /WEB-INF/lib del proprio webapp. Dovresti rimuoverlo. Non appartiene a questo. Se lo hai fatto per "correggere" errori di compilazione sull'API Servlet, leggi questa risposta come farlo correttamente per Eclipse + Tomcat: How do I import the javax.servlet API in my Eclipse project?

Un'altra probabile causa è che il progetto Eclipse è configurato utilizzando un errore " "Versione facet" del modulo Web dinamico. È necessario assicurarsi che questo sia impostato su 3.0 (poiché Tomcat 7.0 è un contenitore Servlet 3.0). Fare clic con il pulsante destro del mouse sul progetto, passare a Proprietà > Sfaccettature del progetto> Modulo Web dinamico e assicurarsi che sia impostato sulla versione 3.0.

Anche in questo caso un'altra causa possibile (ma questo IMO è meno probabile causa questa particolare eccezione) è che lo web.xml è di per sé dichiarato come errato nella versione dell'API Servlet. Assicurarsi che la dichiarazione radice <web-app> soddisfi le specifiche Servlet 3.0.

<web-app 
    xmlns="http://java.sun.com/xml/ns/javaee" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" 
    version="3.0"> 

---

Aggiornamento: se tutto sembra giusto, allora la causa del problema è probabilmente nel 3 ° JAR partito stesso (molto probabilmente quella del Smooks). Vorresti segnalarlo come un bug ai suoi manutentori. Nel frattempo, se non si dispone di JAR che richiedono la scansione dell'annotazione Servlet 3.0, è possibile disattivare la scansione delle annotazioni nei file JAR aggiungendo l'attributo metadata-complete="true" all'entità <web-app> in web.xml.

<web-app 
    xmlns="http://java.sun.com/xml/ns/javaee" 
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" 
    version="3.0" metadata-complete="true"> 

Answer 2

A volte se si esegue un server Tomcat in Eclipse, la directory di lavoro di Tomcat locale può ottenere jacked e si deve cancellare in modo esplicito. Nota che NON è la stessa cosa di fare una compilazione pulita sul progetto: Apri server finestra-> Fai clic destro sul server-> Pulisci directory di lavoro Tomcat ...-> OK

Answer 3

Stavo usando Tomcat 7.0.27 . Durante la migrazione della mia macchina su un'altra con Win7-64 bit, ho iniziato a ricevere questo errore all'avvio di Tomcat. Come questo post (org.apache.tomcat.util.bcel.classfile.ClassFormatException: Invalid byte tag in constant pool: 15 - Tomcat 7, JDK incompatibilty?), ho appena aggiornato Tomcat su 7.0.61 che ha risolto il mio problema.