Impossível acessar o webapp (Tomcat)

Badis · Fevereiro 13, 2023, 4:48pm

Olá.

Durante a última semana consegui acessar o webapp Scada sem nenhum problema. Entretanto, hoje é impossível fazê-lo ( HTTP Status 404 – Not Found)

No manager webbapp do Tomcat8 parece que ele não está funcionando e ao clicar em Iniciar acontece o seguinte:

Como posso resolvê-lo?

catalina.log

13-Feb-2023 17:35:38.179 SEVERE [http-nio-8080-exec-24] org.apache.catalina.core.StandardContext.startInternal One or more listeners failed to start. Full details will be found in the appropriate container log file
13-Feb-2023 17:35:38.179 SEVERE [http-nio-8080-exec-24] org.apache.catalina.core.StandardContext.startInternal Context [/ScadaBR] startup failed due to previous errors
13-Feb-2023 17:35:38.182 WARNING [http-nio-8080-exec-24] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesThreads The web application [ScadaBR] appears to have started a thread named [Dispatcher-Thread-14] but has failed to stop it. This is very likely to create a memory leak. Stack trace of thread:
java.base@11.0.17/java.lang.Object.wait(Native Method)
java.base@11.0.17/java.lang.Object.wait(Object.java:328)
org.apache.log4j.AsyncAppender$Dispatcher.run(AsyncAppender.java:540)
java.base@11.0.17/java.lang.Thread.run(Thread.java:829)
13-Feb-2023 17:35:38.183 WARNING [http-nio-8080-exec-24] org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesObjectStreamClassCaches Failed to clear soft references from ObjectStreamClass$Caches for web application [ScadaBR]
java.lang.ClassCastException: class java.io.ObjectStreamClass$Caches$1 cannot be cast to class java.util.Map (java.io.ObjectStreamClass$Caches$1 and java.util.Map are in module java.base of loader ‘bootstrap’)
at org.apache.catalina.loader.WebappClassLoaderBase.clearCache(WebappClassLoaderBase.java:2251)
at org.apache.catalina.loader.WebappClassLoaderBase.clearReferencesObjectStreamClassCaches(WebappClassLoaderBase.java:2238)
at org.apache.catalina.loader.WebappClassLoaderBase.clearReferences(WebappClassLoaderBase.java:1611)
at org.apache.catalina.loader.WebappClassLoaderBase.stop(WebappClassLoaderBase.java:1556)
at org.apache.catalina.loader.WebappLoader.stopInternal(WebappLoader.java:446)
at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:226)
at org.apache.catalina.core.StandardContext.stopInternal(StandardContext.java:5510)
at org.apache.catalina.util.LifecycleBase.stop(LifecycleBase.java:226)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:154)
at org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1377)
at org.apache.catalina.manager.HTMLManagerServlet.start(HTMLManagerServlet.java:694)
at org.apache.catalina.manager.HTMLManagerServlet.doPost(HTMLManagerServlet.java:218)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:661)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.filters.CsrfPreventionFilter.doFilter(CsrfPreventionFilter.java:136)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:109)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:200)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:610)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:660)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:798)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:806)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:829)

localhost.log

13-Feb-2023 17:03:23.560 INFO [http-nio-8080-exec-13] org.apache.catalina.core.ApplicationContext.log Closing Spring root WebApplicationContext
13-Feb-2023 17:03:23.566 INFO [http-nio-8080-exec-13] org.apache.catalina.core.ApplicationContext.log HTMLManager: list: Listing contexts for virtual host ‘localhost’
13-Feb-2023 17:03:24.614 INFO [http-nio-8080-exec-16] org.apache.catalina.core.ApplicationContext.log HTMLManager: start: Starting web application ‘/ScadaBR’
13-Feb-2023 17:03:25.733 INFO [http-nio-8080-exec-16] org.apache.catalina.core.ApplicationContext.log Initializing Spring root WebApplicationContext
13-Feb-2023 17:03:25.879 SEVERE [http-nio-8080-exec-16] org.apache.catalina.core.StandardContext.listenerStart Exception sending context initialized event to listener instance of class [com.serotonin.mango.MangoContextListener]
java.lang.NullPointerException
at com.serotonin.mango.view.ViewGraphicLoader.loadViewGraphics(ViewGraphicLoader.java:52)
at com.serotonin.mango.MangoContextListener.imageSetInitialize(MangoContextListener.java:488)
at com.serotonin.mango.MangoContextListener.contextInitialized(MangoContextListener.java:101)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4770)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5236)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1377)
at org.apache.catalina.manager.HTMLManagerServlet.start(HTMLManagerServlet.java:694)
at org.apache.catalina.manager.HTMLManagerServlet.doPost(HTMLManagerServlet.java:218)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:661)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:742)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.filters.CsrfPreventionFilter.doFilter(CsrfPreventionFilter.java:136)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:109)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:200)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:96)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:610)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:137)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:660)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:798)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:806)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1498)
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1128)
at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:628)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.base/java.lang.Thread.run(Thread.java:829)

Bina · Março 2, 2023, 7:07pm

estou com o mesmo erro e ainda não resolvi, se conseguir resollver por favor deixe a explicação aqui

Celso · Março 3, 2023, 9:47pm

Pelo seu Log parece que está dando um erro na linha 52 da classe ViewGraphicLoader. Nessa linha tem o código:

File graphicsPath = new File(path, GRAPHICS_PATH);

Então eu daria o palpite que o erro pode estar relacionado à pasta Graphics (talvez a pasta não exista ou esteja com problemas de permissão para o Java acessar).

Celso · Março 3, 2023, 9:50pm

@Bina o erro 404 é uma espécie de “erro genérico”; ele ocorre toda vez que o Tomcat não consegue iniciar/encontrar o app do ScadaBR (seja qual for o motivo). Por isso é recomendado analisar os Logs de erro para tentar encontrar qual é a verdadeira causa do problema. Caso precise de ajuda pode contar conosco do fórum!