I am trying to teach myself servlet and Tomcat etc. I followed some tutorial online and tried to build my first servlet using maven, then I got this error:
type Exception report
message Error instantiating servlet class com.perficient.servlets.HelloWorld
description The server encountered an internal error that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: Error instantiating servlet class com.perficient.servlets.HelloWorld
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.lang.Thread.run(Thread.java:745)
root cause
java.lang.ClassNotFoundException: com.perficient.servlets.HelloWorld
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1858)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1709)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:505)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:956)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:423)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1079)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:625)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.lang.Thread.run(Thread.java:745)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.64 logs.
I did some research online but none of the answers solved my problem. My project tree looks like this:
Project Tree
The problems said:
Description Resource Path Location Type
CHKJ3000E: WAR Validation Failed: org.eclipse.jst.j2ee.commonarchivecore.internal.exception.DeploymentDescriptorLoadException: WEB-INF/web.xml FirstWebapp Unknown Validation Message
So I think it must be something wrong with the the web.xml but I am not familiar with this error message. Here is my web.xml:
<!DOCTYPE web-app PUBLIC
"-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
"http://java.sun.com/dtd/web-app_2_3.dtd" >
<web-app>
<display-name>Archetype Created Web Application</display-name>
<servlet>
<servlet-name>HelloWorld</servlet-name>
<servlet-class>com.perficient.servlets.HelloWorld</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>HelloWorld</servlet-name>
<url-pattern>/HelloWorld</url-pattern>
</servlet-mapping>
</web-app>
Anyone knows what is going wrong with my web.xml? Lots of thanks!
ClassNotFoundException: com.perficient.servlets.HelloWorld
Tomcat is unable to find your HelloWorld class. Make sure you added com.perficient.servlets.HelloWorld in WEB-INF/classes
Change mapping to:
<servlet-mapping>
<servlet-name>HelloWorld</servlet-name>
<url-pattern>/servlet/HelloWorld</url-pattern>
</servlet-mapping>
Related
Getting below exception while fetching logged in user object using xsuaa approuter login
User currentUser = UserAccessor.getCurrentUser();
I am to get currentUser object without using GuiceFilter, If I apply GuiceFilter then getting below exception.
Any one Please suggest me how to get UserAccessor.getCurrentUser() with GuiceFilter
com.sap.cloud.sdk.cloudplatform.security.user.exception.UserAccessException: Failed to get current user: no RequestContext available. Have you correctly configured a RequestContextServletFilter or have you wrapped your logic in a RequestContextExecutor when executing background tasks that are not triggered by a request?
at com.sap.cloud.sdk.cloudplatform.security.user.AbstractUserFacade.getCurrentUserIfAuthenticated(AbstractUserFacade.java:85)
at com.sap.cloud.sdk.cloudplatform.security.user.AbstractUserFacade.getCurrentUser(AbstractUserFacade.java:135)
at com.sap.cloud.sdk.cloudplatform.security.user.UserAccessor.getCurrentUser(UserAccessor.java:122)
at com.company.HelloWorldServlet2.handleRequest(HelloWorldServlet2.java:35)
at com.company.BaseServlet.doPost(BaseServlet.java:120)
at com.company.BaseServlet.doGet(BaseServlet.java:104)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:624)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
at com.google.inject.servlet.ServletDefinition.doServiceImpl(ServletDefinition.java:287)
at com.google.inject.servlet.ServletDefinition.doService(ServletDefinition.java:277)
at com.google.inject.servlet.ServletDefinition.service(ServletDefinition.java:182)
at com.google.inject.servlet.ManagedServletPipeline.service(ManagedServletPipeline.java:91)
at com.google.inject.servlet.ManagedFilterPipeline.dispatch(ManagedFilterPipeline.java:119)
at com.google.inject.servlet.GuiceFilter$1.call(GuiceFilter.java:133)
at com.google.inject.servlet.GuiceFilter$1.call(GuiceFilter.java:130)
at com.google.inject.servlet.GuiceFilter$Context.call(GuiceFilter.java:203)
at com.google.inject.servlet.GuiceFilter.doFilter(GuiceFilter.java:130)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:241)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:208)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:219)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:110)
at org.apache.tomee.catalina.OpenEJBValve.invoke(OpenEJBValve.java:44)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:494)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:169)
at com.sap.xs.java.valves.ErrorReportValve.invoke(ErrorReportValve.java:66)
at ch.qos.logback.access.tomcat.LogbackValve.invoke(LogbackValve.java:191)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:116)
at com.sap.xs.jdbc.datasource.valve.JDBCValve.invoke(JDBCValve.java:62)
at com.sap.xs.security.UserInfoValve.invoke(UserInfoValve.java:19)
at com.sap.xs.statistics.tomcat.valve.RequestTracingValve.invoke(RequestTracingValve.java:43)
at com.sap.xs.logging.catalina.RuntimeInfoValve.invoke(RuntimeInfoValve.java:40)
at org.apache.catalina.valves.RemoteIpValve.invoke(RemoteIpValve.java:695)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:445)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1136)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:836)
Essentially, Sander's answer is already correct (please kindly accept his). To be more precise your definition in web.xml must look the following way (omitting all the other ServletFilters before):
<!-- other filter go here -->
<filter>
<filter-name>RequestContextServletFilter</filter-name>
<filter-class>com.sap.cloud.sdk.cloudplatform.servlet.RequestContextServletFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>RequestContextServletFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<filter>
<filter-name>guiceFilter</filter-name>
<filter-class>com.google.inject.servlet.GuiceFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>guiceFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
I've tried your minimal non-working example with this and the exception disappears. Using the ALLOW_MOCKED_AUTH_HEADER: true environment variable an empty user is returned which is proof enough that the filter applies before the Guice filter:
From the stack trace, it looks like the GuiceFilter is invoked while the RequestContextServletFilter is not. The RequestContextServletFilter initializes a RequestContext, which is a prerequisite for retrieving user information.
Can you try to explicitly declare the RequestContextServletFilter in your web.xml file?
When I try to run a simple servlet class on Tomcat Server it is giving this error.
HTTP Status 500 - Error instantiating servlet class com.main.Hello
type Exception report
message Error instantiating servlet class com.main.Hello
description The server encountered an internal error that prevented it
from fulfilling this request.
exception
javax.servlet.ServletException: Error instantiating servlet class com.main.Hello
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:506)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:962)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:452)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1087)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.lang.Thread.run(Thread.java:745)
root cause
java.lang.ClassNotFoundException: com.main.Hello
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1892)
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1735)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:506)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:103)
org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:962)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:452)
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1087)
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:637)
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:316)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.lang.Thread.run(Thread.java:745)
note The full stack trace of the root cause is available in the Apache Tomcat/7.0.75 logs.
Apache Tomcat/7.0.75
I don't understand what is going wrong. I have checked everything I know. Mapped properly in XML. below is the XML
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">
<display-name>Web_Application</display-name>
<servlet>
<servlet-name>Hello</servlet-name>
<servlet-class>com.main.Hello</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>Hello</servlet-name>
<url-pattern>/hello</url-pattern>
</servlet-mapping>
</web-app>
please let me know if anymore information is needed. and please help me in resolving this.
thank you.
check your class path properly and make sure web.xml is exist into WEB-INF folder. then clean your project and run it.
I was trying to learn how to do Java Web Application with tomcat
I am off to good start but when i try to load my servlet class i am getting 500 error
My newPlayer.java file:
package servlet;
import java.io.IOException;
import java.io.PrintWriter;
/**
* Created by kbuczynski on 24/01/17.
*/
public class newPlayer extends javax.servlet.http.HttpServlet {
protected void doPost(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) throws javax.servlet.ServletException, IOException {
}
protected void doGet(javax.servlet.http.HttpServletRequest request, javax.servlet.http.HttpServletResponse response) throws javax.servlet.ServletException, IOException {
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.print("<h1>HI</h1>");
out.flush();
}
}
web.xml
<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1">
<display-name>WeBJ</display-name>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
<servlet>
<servlet-name>newPlayer</servlet-name>
<servlet-class>servlet.newPlayer</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>newPlayer</servlet-name>
<url-pattern>/newPlayer</url-pattern>
</servlet-mapping>
</web-app>
Error:
exception
javax.servlet.ServletException: Error instantiating servlet class servlet.newPlayer
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:474)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:495)
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:767)
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1347)
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.lang.Thread.run(Thread.java:745)
root cause
java.lang.ClassNotFoundException: servlet.newPlayer
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1275)
org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1109)
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:474)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:624)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349)
org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:495)
org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66)
org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:767)
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1347)
org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
java.lang.Thread.run(Thread.java:745)
File Structure
CLICK
I am always happy to take any advice so feel free to do so.
A good project structure might be the one followed by maven: project-structure.
I have a small servlet project on my github that is using maven as a build tool: simple-servlet.
OK With help from #perbelinio i realised that Intellij is useless for it. I have installed netbeans and deployed my project. After few changes in a code it worked.
Thanks for help :)
I'm trying to migrate from Vaadin 6 to Vaadin 7.
When I'm trying to open application url I get a ClassCastException
SEVERE: Allocate exception for servlet Vaadin Application Servlet
java.lang.ClassCastException: com.vaadin.server.VaadinServlet cannot be cast to javax.servlet.Servlet
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1136)
at org.apache.catalina.core.StandardWrapper.allocate(StandardWrapper.java:857)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:136)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:99)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:929)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1002)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)
at org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:310)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
I cann't understand what's wrong because it seems that web.xml is ok.
Mapping of application servlet is listed below
<servlet>
<servlet-name>Ohta Application</servlet-name>
<servlet-class>com.vaadin.server.VaadinServlet</servlet-class>
<init-param>
<description>
Vaadin UI class to use</description>
<param-name>UI</param-name>
<param-value>com.ritmsoft.ohta.OhtaUI</param-value>
</init-param>
<init-param>
<param-name>widgetset</param-name>
<param-value>com.ritmsoft.ohta.widgetset.OhtaWidgetSet</param-value>
</init-param>
</servlet>
<servlet-mapping>
<servlet-name>Ohta Application</servlet-name>
<url-pattern>/*</url-pattern>
</servlet-mapping>
<servlet-mapping>
<servlet-name>Ohta Application</servlet-name>
<url-pattern>/VAADIN/*</url-pattern>
</servlet-mapping>
Help me, please.
Or if you use Maven make your servlet's scope "provided" like so:
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.0.1</version>
<scope>provided</scope>
</dependency>
That way it will use the container's version of the servlet jar if it exists, otherwise it will use the one you declare in Maven.
The problem is most likely caused by javax.servlet.Servlet being loaded by multiple class-loaders. It usually exists in servlet*.jar. It is possible that the container provides its own version of this jar, and your application provides another. Try removing the one in your war.
I have the same issue here, but only if I try to run the vaadin maven project with the tomcat plugin for eclipse. The dependency for the serlet-api is exactly as shown above. Snd tehr eis no difference if I comment it completely or just the scope part.
There is always a servlet-api-2.5-6.1.11 in the lib folder. I don't know from where this comes from. But with the scope provided there is definitly no javax.servlet-api.jar in the lib folder.
And if i copy the war manuelly into the tomcats webapps folder and start if by console it works fine. I don't get the difference.
Any ideas?
I am having a strange issue with a Spring web application. This is from the Tomcat log:
GRAVE: Exception lors de l'envoi de l'évènement contexte initialisé (context initialized) à l'instance de classe d'écoute (listener) org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanDefinitionStoreException: Failed to load bean class: com.jverstry.Configuration.WebConfig; nested exception is java.io.FileNotFoundException: class path resource [java/lang/Object.class] cannot be opened because it does not exist
at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:267)
at org.springframework.context.annotation.ConfigurationClassPostProcessor.postProcessBeanDefinitionRegistry(ConfigurationClassPostProcessor.java:203)
at org.springframework.context.support.AbstractApplicationContext.invokeBeanFactoryPostProcessors(AbstractApplicationContext.java:622)
at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:451)
at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:383)
at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:283)
at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:111)
at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4791)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5285)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at org.apache.catalina.manager.ManagerServlet.start(ManagerServlet.java:1247)
at org.apache.catalina.manager.HTMLManagerServlet.start(HTMLManagerServlet.java:714)
at org.apache.catalina.manager.HTMLManagerServlet.doPost(HTMLManagerServlet.java:219)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:641)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:722)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:305)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.filters.CsrfPreventionFilter.doFilter(CsrfPreventionFilter.java:186)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.filters.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:108)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:243)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:210)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:225)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:123)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:581)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:168)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:98)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:927)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:118)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:407)
at org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1001)
at org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:585)
at org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:1770)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.io.FileNotFoundException: class path resource [java/lang/Object.class] cannot be opened because it does not exist
at org.springframework.core.io.ClassPathResource.getInputStream(ClassPathResource.java:157)
at org.springframework.core.type.classreading.SimpleMetadataReader.<init>(SimpleMetadataReader.java:49)
at org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader(SimpleMetadataReaderFactory.java:80)
at org.springframework.core.type.classreading.CachingMetadataReaderFactory.getMetadataReader(CachingMetadataReaderFactory.java:101)
at org.springframework.core.type.classreading.SimpleMetadataReaderFactory.getMetadataReader(SimpleMetadataReaderFactory.java:76)
at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:257)
at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:149)
at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:126)
at org.springframework.context.annotation.ConfigurationClassParser.doProcessConfigurationClass(ConfigurationClassParser.java:219)
at org.springframework.context.annotation.ConfigurationClassParser.processConfigurationClass(ConfigurationClassParser.java:149)
at org.springframework.context.annotation.ConfigurationClassParser.parse(ConfigurationClassParser.java:126)
at org.springframework.context.annotation.ConfigurationClassPostProcessor.processConfigBeanDefinitions(ConfigurationClassPostProcessor.java:263)
... 36 more
16-sept.-2012 15:51:56 org.apache.catalina.core.ApplicationContext log
INFO: Closing Spring root WebApplicationContext
I have seen similar questions on SO, but none related to java/lang/Object.class. I hae no idea what is causing this.
This is my web.xml:
<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" 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_2_5.xsd">
<context-param>
<param-name>contextClass</param-name>
<param-value>org.springframework.web.context.support.AnnotationConfigWebApplicationContext</param-value>
</context-param>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>com.jverstry.Configuration</param-value>
</context-param>
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
<filter>
<filter-name>springSecurityFilterChain</filter-name>
<filter-class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>
<filter-mapping>
<filter-name>springSecurityFilterChain</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<servlet>
<servlet-name>mytest</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>contextConfigLocation</param-name>
<param-value></param-value>
</init-param>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>spring</servlet-name>
<url-pattern>/mytest/*</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file></welcome-file>
</welcome-file-list>
</web-app>
Here is my WebConfig class:
#EnableWebMvc
#Configuration
#ComponentScan(basePackages = {"com.jverstry", "org.krams"})
#ImportResource("WEB-INF/spring-security.xml")
public class WebConfig extends WebMvcConfigurerAdapter {
#Bean
public ViewResolver getViewResolver() {
InternalResourceViewResolver resolver
= new InternalResourceViewResolver();
resolver.setPrefix("WEB-INF/pages/");
resolver.setSuffix(".jsp");
return resolver;
}
}
That is most peculiar.
Lets start with the what we do know. The class java.lang.Object and the corresponding java/lang/Object.class file most certainly do exist. If they didn't then is is highly unlikely that the JVM would have started in the first place.
So how come you get the exception?
My theory it that somewhere in your codebase (or the libraries you are using) there is a classloader that is breaking the rules. When it is asked to load a resource, a well behaved class loader will first delegate up the class loader chain to see if its parent classloader can load the resource. I suspect that what is happening is that the broken classloader is skipping the delegation step and just trying to load the resource itself. If the "rt.jar" is not on its list of JARs, etc (and it normally won't be) then the class loader won't find the Object.class file ... and you will get a FileNotFoundException.
UPDATE
I think I understand. If your Java installation was corrupted to the extent that it couldn't load java.lang.Object, then the JVM wouldn't boot. And if it had already booted before the corruption, then it wouldn't be trying to load the Object class.
But it is not trying to do that. It is actually trying to read the Object.class file. And the stacktrace seem to be saying that this is occurring in Spring's annotation processing code.
So I think that something has triggered a servlet restart after the Java installation was compromised. And the restart caused the spring configuration to be done again. Why it worked when you rebooted is a mystery ... unless the problem was due to a hardware error or stuck device driver that was cleared by the reboot.
(The post you found describes a different scenario ... where the JVM fail during its bootstrap. Your scenario is more complicated.)
It turns out my JRE6 installation was somehow corrupted. I reinstalled it manually and now I don't have an issue anymore. I have also found another post which might explain why the issue would disappear after rebooting.