Error in Simple Servlet Execution
I am using Eclipse...
I have changed the build path..source files to this folder
WebContent/classes/ [class files]
In this classes folder i am having hi servlet file
hi.java [source code]
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class hi extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet
static final long serialVersionUID = 1L;
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
response.setContentType("text/html");
PrintWriter pw=response.getWriter();
pw.println("<html><body>hi</body></html>");
}After Running server..
http://localhost:8080/tested/hi
It Displays this Error
Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: Wrapper cannot find servlet class hi or a class it depends on
+ org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)+
+ org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)+
+ org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:868)+
+ org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:663)+
+ org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)+
+ org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)+
+ org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)+
+ java.lang.Thread.run(Unknown Source)+
root cause
java.lang.ClassNotFoundException: hi
+ org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1338)+
+ org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1187)+
+ org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)+
+ org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)+
+ org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:868)+
+ org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:663)+
+ org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)+
+ org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)+
+ org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)+
+ java.lang.Thread.run(Unknown Source)+
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.12 logs.
Please five any soln
check your deployment directory and make sure the web application directory structure is ther.
WebContent/classes/ class filesyou can give any name .. but you've to tell the myeclipse first so that when deploying the application it'll automatically create the required directories and place the files respectively.
i think nothing is there in your Deploment directory ( webapps )
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iam testing this on my personal Wifi network
my server is :192.168.1.100
my phone ip is : 192.168.1.105
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TestServlet.java:1: package javax.servlet does not exist
import javax.servlet.*;
^
TestServlet.java:2: package javax.servlet.http does not exist
import javax.servlet.http.*;
^
Is this anything to do with the classpath or path settings?
Any help would be highly appreciated.
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a
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You shouldn't have to do this. What operating system are you using?
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Hi !
During execution, we have random events where this error appears. It appears for different field names and objects. The error code is displayed in the workspace and this is an excerpt of the workspace log.
We have 2 workspaces using websphere. We noticed that in the past, a few times this was solved by synchronizing the nodes. I does not get fixed like that anymore.
Any clues? this same deployed application worked in the past, it was not updated.
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<W>, "May 11, 2011 2:04:59 PM", Default, Main, <2> WebContainer : 0, "Error workspace-1305483686838
Unexpected error during interactive component execution.
Caused by: Invalid type for field newProduct . Expected : 'xobject.company.BusinessObjects.Product'. Received : 'Lxobject/company/BusinessObjects/Product;' .
fuego.web.execution.exception.UnexpectedExecutionException: Unexpected error during interactive component execution.
at fuego.web.papi.TaskExecutor.execute(TaskExecutor.java:187)
at fuego.workspace.servlet.ExecutorServlet.doAction(ExecutorServlet.java:117)
at fuego.workspace.servlet.BaseServlet.doPost(BaseServlet.java:229)
at fuego.workspace.servlet.BaseServlet.doGet(BaseServlet.java:220)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
at fuego.workspace.servlet.AuthenticatedServlet.service(AuthenticatedServlet.java:83)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1146)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1087)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:118)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:87)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:837)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:680)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:588)
at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:524)
at com.ibm.ws.webcontainer.webapp.WebAppRequestDispatcher.forward(WebAppRequestDispatcher.java:321)
at fuego.web.execution.servlet.ServletExternalContext.forwardInternal(ServletExternalContext.java:197)
at fuego.web.execution.servlet.ServletExternalContext.finishExecution(ServletExternalContext.java:103)
at fuego.xobject.runtime.components.XObjectHtmlRuntimeController.service(XObjectHtmlRuntimeController.java:342)
at fuego.web.execution.servlet.ServletRedirector$ControllerRedirector.forward(ServletRedirector.java:197)
at fuego.web.execution.servlet.ServletRedirector.redirect(ServletRedirector.java:58)
at fuego.web.papi.TaskExecutor.processRedirect(TaskExecutor.java:224)
at fuego.web.papi.TaskExecutor.execute(TaskExecutor.java:104)
at fuego.workspace.servlet.ExecutorServlet.doAction(ExecutorServlet.java:117)
at fuego.workspace.servlet.BaseServlet.doPost(BaseServlet.java:229)
at fuego.workspace.servlet.BaseServlet.doGet(BaseServlet.java:220)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:743)
at fuego.workspace.servlet.AuthenticatedServlet.service(AuthenticatedServlet.java:83)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:856)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1146)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.service(ServletWrapper.java:1087)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:145)
at fuego.web.filter.SingleThreadPerSessionFilter.doFilter(SingleThreadPerSessionFilter.java:64)
at fuego.web.filter.BaseFilter.doFilter(BaseFilter.java:63)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
at fuego.web.filter.CharsetFilter.doFilter(CharsetFilter.java:48)
at fuego.web.filter.BaseFilter.doFilter(BaseFilter.java:63)
at com.ibm.ws.webcontainer.filter.FilterInstanceWrapper.doFilter(FilterInstanceWrapper.java:190)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain.doFilter(WebAppFilterChain.java:130)
at com.ibm.ws.webcontainer.filter.WebAppFilterChain._doFilter(WebAppFilterChain.java:87)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:837)
at com.ibm.ws.webcontainer.filter.WebAppFilterManager.doFilter(WebAppFilterManager.java:680)
at com.ibm.ws.webcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:588)
at com.ibm.ws.wswebcontainer.servlet.ServletWrapper.handleRequest(ServletWrapper.java:524)
at com.ibm.ws.webcontainer.servlet.CacheServletWrapper.handleRequest(CacheServletWrapper.java:90)
at com.ibm.ws.webcontainer.WebContainer.handleRequest(WebContainer.java:751)
at com.ibm.ws.wswebcontainer.WebContainer.handleRequest(WebContainer.java:1478)
at com.ibm.ws.webcontainer.channel.WCChannelLink.ready(WCChannelLink.java:125)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleDiscrimination(HttpInboundLink.java:458)
at com.ibm.ws.http.channel.inbound.impl.HttpInboundLink.handleNewInformation(HttpInboundLink.java:387)
at com.ibm.ws.http.channel.inbound.impl.HttpICLReadCallback.complete(HttpICLReadCallback.java:102)
at com.ibm.ws.tcp.channel.impl.AioReadCompletionListener.futureCompleted(AioReadCompletionListener.java:165)
at com.ibm.io.async.AbstractAsyncFuture.invokeCallback(AbstractAsyncFuture.java:217)
at com.ibm.io.async.AsyncChannelFuture.fireCompletionActions(AsyncChannelFuture.java:161)
at com.ibm.io.async.AsyncFuture.completed(AsyncFuture.java:136)
at com.ibm.io.async.ResultHandler.complete(ResultHandler.java:196)
at com.ibm.io.async.ResultHandler.runEventProcessingLoop(ResultHandler.java:751)
at com.ibm.io.async.ResultHandler$2.run(ResultHandler.java:881)
at com.ibm.ws.util.ThreadPool$Worker.run(ThreadPool.java:1497)
Caused by: java.lang.ClassCastException: Invalid type for field newProduct . Expected : 'xobject.company.BusinessObjects.Product'. Received : 'Lxobject/company/BusinessObjects/Product;' .
at fuego.io.ObjectSerialization.resolveFieldValue(ObjectSerialization.java:434)
at fuego.io.ObjectSerialization.customReadObject(ObjectSerialization.java:290)
at xobject.Moving.BusinessObjects.Agreements.Agreement.readObject(Agreement.xcdl)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:618)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1036)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1848)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1755)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1341)
at java.io.ObjectInputStream.access$300(ObjectInputStream.java:212)
at java.io.ObjectInputStream$GetFieldImpl.readFields(ObjectInputStream.java:2108)
at java.io.ObjectInputStream.readFields(ObjectInputStream.java:548)
at fuego.io.ObjectSerialization.customReadObject(ObjectSerialization.java:197)
at xobject.Moving.BusinessObjects.AccountAgreement.readObject(AccountAgreement.xcdl)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:618)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1036)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1848)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1755)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1341)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:378)
at java.util.ArrayList.readObject(ArrayList.java:617)
at sun.reflect.GeneratedMethodAccessor15.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:618)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1036)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1848)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1755)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1341)
at java.io.ObjectInputStream.access$300(ObjectInputStream.java:212)
at java.io.ObjectInputStream$GetFieldImpl.readFields(ObjectInputStream.java:2108)
at java.io.ObjectInputStream.readFields(ObjectInputStream.java:548)
at fuego.io.ObjectSerialization.customReadObject(ObjectSerialization.java:197)
at xobject.Moving.BusinessObjects.Account.readObject(Account.xcdl)
at sun.reflect.GeneratedMethodAccessor347.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:618)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1036)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1848)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1755)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1341)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:378)
at java.util.HashMap.readObject(HashMap.java:1318)
at sun.reflect.GeneratedMethodAccessor12.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:618)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1036)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1848)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1755)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1341)
at java.io.ObjectInputStream.access$300(ObjectInputStream.java:212)
at java.io.ObjectInputStream$GetFieldImpl.readFields(ObjectInputStream.java:2108)
at java.io.ObjectInputStream.readFields(ObjectInputStream.java:548)
at fuego.io.ObjectSerialization.customReadObject(ObjectSerialization.java:197)
at xobject.Moving.BusinessObjects.Person.readObject(Person.xcdl)
at sun.reflect.GeneratedMethodAccessor348.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:618)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1036)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1848)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1755)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1341)
at java.io.ObjectInputStream.access$300(ObjectInputStream.java:212)
at java.io.ObjectInputStream$GetFieldImpl.readFields(ObjectInputStream.java:2108)
at java.io.ObjectInputStream.readFields(ObjectInputStream.java:548)
at fuego.io.ObjectSerialization.customReadObject(ObjectSerialization.java:197)
at xobject.Moving.BusinessObjects.Account.readObject(Account.xcdl)
at sun.reflect.GeneratedMethodAccessor347.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:618)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1036)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1848)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1755)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1341)
at java.io.ObjectInputStream.access$300(ObjectInputStream.java:212)
at java.io.ObjectInputStream$GetFieldImpl.readFields(ObjectInputStream.java:2108)
at java.io.ObjectInputStream.readFields(ObjectInputStream.java:548)
at fuego.io.ObjectSerialization.customReadObject(ObjectSerialization.java:197)
at xobject.Moving.Views.AbstractView.readObject(AbstractView.xcdl)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:79)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:618)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1036)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1848)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1755)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1341)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:378)
at java.util.HashMap.readObject(HashMap.java:1318)
at sun.reflect.GeneratedMethodAccessor12.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:618)
at java.io.ObjectStreamClass.invokeReadObject(ObjectStreamClass.java:1036)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1848)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1755)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1341)
at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1947)
at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1871)
at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1755)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1341)
at java.io.ObjectInputStream.readArray(ObjectInputStream.java:1670)
at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1335)
at java.io.ObjectInputStream.readObject(ObjectInputStream.java:378)
at fuego.papi.impl.j2ee.Marshaller.unmarshall(Marshaller.java:46)
at fuego.papi.impl.j2ee.EJBTaskExecutionResult.unmarshall(EJBTaskExecutionResult.java:73)
at fuego.papi.impl.j2ee.EJBExecution.next(EJBExecution.java:204)
at fuego.web.execution.InteractiveExecution.process(InteractiveExecution.java:177)
at fuego.web.execution.impl.WebInteractiveExecution.process(WebInteractiveExecution.java:54)
at fuego.web.execution.InteractiveExecution.process(InteractiveExecution.java:223)
at fuego.web.papi.TaskExecutor.processResult(TaskExecutor.java:266)
at fuego.web.papi.TaskExecutor.execute(TaskExecutor.java:101)
... 59 more
"Hi
Please let me know, how your exception got resolved ?
Thanks,
Brijesh Kumar Singh -
Unexpected error during interactive component execution.
I have an automatic activity within a screenflow. When I try to access this, it is giving the following exception in logs :(workspace.log)
[<D> 0719 07:52:42.519] Main (<9> [ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)'): ExecutionDispatcher.actionId: RUN_APPLICATION_TASK
[<D> 0719 07:52:42.519] Main (<9> [ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)'): ExecutionDispatcher.runApplicationTask: Global Excecution ->fuego.papi.impl.j2ee.EJBGlobalExecution@9994d62
[<D> 0719 07:52:42.519] Main (<9> [ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)'): ExecutionDispatcher.customRunTask(): 4b10000
[<W> 0719 07:52:42.835] Main (<9> [ACTIVE] ExecuteThread: '1' for queue: 'weblogic.kernel.Default (self-tuning)'): Unexpected error during interactive component execution.
*[ (cont) ] Main: Caused by: The catalog manager [bpmXtest/2009-09-25 11:06:11-05:00.1327] is not registered.*
[ (cont) ] Main: fuego.web.execution.exception.UnexpectedExecutionException: Unexpected error during interactive component execution.
[ (cont) ] Main: at fuego.web.papi.TaskExecutor.execute(TaskExecutor.java:187)
[ (cont) ] Main: at fuego.workspace.servlet.ExecutorServlet.doAction(ExecutorServlet.java:117)
[ (cont) ] Main: at fuego.workspace.servlet.BaseServlet.doPost(BaseServlet.java:229)
[ (cont) ] Main: at fuego.workspace.servlet.BaseServlet.doGet(BaseServlet.java:220)
[ (cont) ] Main: at javax.servlet.http.HttpServlet.service(HttpServlet.java:707)
[ (cont) ] Main: at fuego.workspace.servlet.AuthenticatedServlet.service(AuthenticatedServlet.java:83)
[ (cont) ] Main: at javax.servlet.http.HttpServlet.service(HttpServlet.java:820)
[ (cont) ] Main: at weblogic.servlet.internal.StubSecurityHelper$ServletServiceAction.run(StubSecurityHelper.java:227)
[ (cont) ] Main: at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
[ (cont) ] Main: at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
[ (cont) ] Main: at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
[ (cont) ] Main: at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
[ (cont) ] Main: at fuego.web.filter.SingleThreadPerSessionFilter.doFilter(SingleThreadPerSessionFilter.java:64)
[ (cont) ] Main: at fuego.web.filter.BaseFilter.doFilter(BaseFilter.java:63)
[ (cont) ] Main: at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
[ (cont) ] Main: at fuego.web.filter.CharsetFilter.doFilter(CharsetFilter.java:48)
[ (cont) ] Main: at fuego.web.filter.BaseFilter.doFilter(BaseFilter.java:63)
[ (cont) ] Main: at weblogic.servlet.internal.FilterChainImpl.doFilter(FilterChainImpl.java:42)
[ (cont) ] Main: at weblogic.servlet.internal.WebAppServletContext$ServletInvocationAction.run(WebAppServletContext.java:3496)
[ (cont) ] Main: at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
[ (cont) ] Main: at weblogic.security.service.SecurityManager.runAs(Unknown Source)
[ (cont) ] Main: at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2180)
[ (cont) ] Main: at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2086)
[ (cont) ] Main: at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1406)
[ (cont) ] Main: at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
[ (cont) ] Main: at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
[ (cont) ] Main: Caused by: java.lang.ClassNotFoundException: The catalog manager [bpmXtest/2009-09-25 11:06:11-05:00.1327] is not registered.
[ (cont) ] Main: at fuego.util.CatalogLoaderMgrCache.findOrCreateCatalogClassloader(CatalogLoaderMgrCache.java:83)
[ (cont) ] Main: at fuego.util.CatalogLoaderMgr.getCatalogClassLoader(CatalogLoaderMgr.java:68)
[ (cont) ] Main: at fuego.papi.impl.j2ee.EJBTaskExecutionResult.unmarshall(EJBTaskExecutionResult.java:72)
[ (cont) ] Main: at fuego.papi.impl.j2ee.EJBExecution.next(EJBExecution.java:204)
[ (cont) ] Main: at fuego.web.execution.InteractiveExecution.process(InteractiveExecution.java:177)
[ (cont) ] Main: at fuego.web.execution.impl.WebInteractiveExecution.process(WebInteractiveExecution.java:54)
[ (cont) ] Main: at fuego.web.execution.InteractiveExecution.process(InteractiveExecution.java:223)
[ (cont) ] Main: at fuego.web.papi.TaskExecutor.runApplicationTask(TaskExecutor.java:349)
[ (cont) ] Main: at fuego.web.papi.TaskExecutor.execute(TaskExecutor.java:95)
What does the exception refer to:Caused by: java.lang.ClassNotFoundException: The catalog manager [bpmXtest/2009-09-25 11:06:11-05:00.1327] is not registered.Just guessing here, but I'd suspect that you have a BPM Object that you are using in your screenflow. Inside your BPM Object you probably have a method that makes the database call. I'm assuming that you might be using Dynamic SQL in your method.
If this is the case then make sure that this method has the property set to "Server Side".
Dan -
hi all,
i had gone through the previous people who posted about the import.javax.httpServlet is not found... I am also encounting this error.. I do not understand what to change and include in the classpath.. i had installed JDK 1.3.1_01 and Apache TomCat under windows.
i had written a simple servlet and i had put it in the directory name web-inf/classes under tomcat. What should i need to do next??
Thanks for your help.Hi,
Set servlet.jar file in CLASSPATH. You would not
encounter this problem again.
Regards,
Sudhir -
Javax.servlet.ServletException: Servlet execution threw an exception
Hi guys...
I got an error message after I click a button on my page. Before my action class called, servlet throw an exception.
this is the error message from my eclipse console.
15:31:31,062 INFO [STDOUT] javax.servlet.ServletException: Servlet execution threw an exception
15:31:31,062 INFO [STDOUT] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:275)
15:31:31,062 INFO [STDOUT] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
15:31:31,156 INFO [STDOUT] at roll.mov.j2ee.common.filters.AuthenticationFilter.doFilter(AuthenticationFilter.java:167)
15:31:31,156 INFO [STDOUT] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
15:31:31,156 INFO [STDOUT] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
15:31:31,156 INFO [STDOUT] at roll.mov.j2ee.common.filters.PersistFilter.doFilter(PersistenceFilter.java:160)
15:31:31,156 INFO [STDOUT] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
15:31:31,156 INFO [STDOUT] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
15:31:31,156 INFO [STDOUT] at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
15:31:31,156 INFO [STDOUT] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
15:31:31,156 INFO [STDOUT] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
15:31:31,156 INFO [STDOUT] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
15:31:31,156 INFO [STDOUT] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
15:31:31,156 INFO [STDOUT] at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:39)
15:31:31,156 INFO [STDOUT] at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:159)
15:31:31,156 INFO [STDOUT] at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:59)
15:31:31,156 INFO [STDOUT] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
15:31:31,156 INFO [STDOUT] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
15:31:31,156 INFO [STDOUT] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
15:31:31,156 INFO [STDOUT] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
15:31:31,156 INFO [STDOUT] at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:307)
15:31:31,156 INFO [STDOUT] at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:385)
15:31:31,156 INFO [STDOUT] at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:748)
15:31:31,156 INFO [STDOUT] at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:678)
15:31:31,156 INFO [STDOUT] at org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:871)
15:31:31,156 INFO [STDOUT] at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
15:31:31,156 INFO [STDOUT] at java.lang.Thread.run(Thread.java:595)
15:31:31,156 ERROR [PersistFilter] Exception object caught by servlet persist filter.
15:31:31,171 ERROR [[action]] Servlet.service() for servlet action threw exception
roll.mov.j2ee.common.exceptions.RollMovException: Error caught
begin nested exception:
javax.servlet.ServletException: Servlet execution threw an exception
end nested exception:
javax.servlet.ServletException: Servlet execution threw an exception
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:275)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at roll.mov.j2ee.common.filters.AuthenticationFilter.doFilter(AuthenticationFilter.java:167)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at roll.mov.j2ee.common.filters.PersistenceFilter.doFilter(PersistenceFilter.java:160)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:39)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:159)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:59)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:307)
at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:385)
at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:748)
at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:678)
at org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:871)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)
Note:
- roll.mov.j2ee.common.exceptions.RollMovException is my custom exception.
- roll.mov.j2ee.common.filters.AuthenticationFilter, implement javax.servlet.Filter
- roll.mov.j2ee.common.filters.PersistFilter, implement javax.servlet.Filter
this persistFilter work as proxy hibernate filterFrom my experience, Normally the root cause will be display in the exception. but this error message doesn't provide any information about what's wrong with my code.
Anyone have an idea?
Thanks in advamce
pdtThanks for replying gimbal2.
in that line, " AuthenticationFilter.java:167" i called the
filterChain.doFilter(request, response);where filterChain is object of javax.servlet.FilterChain
I run my jboss with debug mode and i got abit more information about the error.
the error message:
2006-07-20 12:56:48,437 WARN [org.apache.struts.action.RequestProcessor] Unhandled Exception thrown: class java.lang.NullPointerException
2006-07-20 12:56:48,437 INFO [STDOUT] ServletException thrown
2006-07-20 12:56:48,437 INFO [STDOUT] javax.servlet.ServletException
2006-07-20 12:56:48,437 INFO [STDOUT] at org.apache.struts.action.RequestProcessor.processException(RequestProcessor.java:523)
2006-07-20 12:56:48,437 INFO [STDOUT] at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:421)
2006-07-20 12:56:48,437 INFO [STDOUT] at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:224)
2006-07-20 12:56:48,437 INFO [STDOUT] at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1194)
2006-07-20 12:56:48,437 INFO [STDOUT] at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:432)
2006-07-20 12:56:48,437 INFO [STDOUT] at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
2006-07-20 12:56:48,437 INFO [STDOUT] at javax.servlet.http.HttpServlet.service(HttpServlet.java:810)
15:31:31,062 INFO [STDOUT] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:275)
15:31:31,062 INFO [STDOUT] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
15:31:31,156 INFO [STDOUT] at roll.mov.j2ee.common.filters.AuthenticationFilter.doFilter(AuthenticationFilter.java:167)
15:31:31,156 INFO [STDOUT] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
15:31:31,156 INFO [STDOUT] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
15:31:31,156 INFO [STDOUT] at roll.mov.j2ee.common.filters.PersistFilter.doFilter(PersistenceFilter.java:160)
15:31:31,156 INFO [STDOUT] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
15:31:31,156 INFO [STDOUT] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
15:31:31,156 INFO [STDOUT] at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
15:31:31,156 INFO [STDOUT] at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
15:31:31,156 INFO [STDOUT] at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
15:31:31,156 INFO [STDOUT] at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
15:31:31,156 INFO [STDOUT] at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
15:31:31,156 INFO [STDOUT] at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:39)
15:31:31,156 INFO [STDOUT] at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:159)
15:31:31,156 INFO [STDOUT] at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:59)
15:31:31,156 INFO [STDOUT] at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
15:31:31,156 INFO [STDOUT] at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
15:31:31,156 INFO [STDOUT] at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
15:31:31,156 INFO [STDOUT] at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
15:31:31,156 INFO [STDOUT] at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:307)
15:31:31,156 INFO [STDOUT] at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:385)
15:31:31,156 INFO [STDOUT] at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:748)
15:31:31,156 INFO [STDOUT] at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:678)
15:31:31,156 INFO [STDOUT] at org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:871)
15:31:31,156 INFO [STDOUT] at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
15:31:31,156 INFO [STDOUT] at java.lang.Thread.run(Thread.java:595)
15:31:31,156 ERROR [PersistFilter] Exception object caught by servlet persist filter.
15:31:31,171 ERROR [[action]] Servlet.service() for servlet action threw exception
roll.mov.j2ee.common.exceptions.RollMovException: Error caught
begin nested exception:
javax.servlet.ServletException: Servlet execution threw an exception
end nested exception:
javax.servlet.ServletException: Servlet execution threw an exception
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:275)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at roll.mov.j2ee.common.filters.AuthenticationFilter.doFilter(AuthenticationFilter.java:167)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at roll.mov.j2ee.common.filters.PersistenceFilter.doFilter(PersistenceFilter.java:160)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:81)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:202)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:173)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:178)
at org.jboss.web.tomcat.security.CustomPrincipalValve.invoke(CustomPrincipalValve.java:39)
at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:159)
at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:59)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:126)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:107)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
at org.apache.jk.server.JkCoyoteHandler.invoke(JkCoyoteHandler.java:307)
at org.apache.jk.common.HandlerRequest.invoke(HandlerRequest.java:385)
at org.apache.jk.common.ChannelSocket.invoke(ChannelSocket.java:748)
at org.apache.jk.common.ChannelSocket.processConnection(ChannelSocket.java:678)
at org.apache.jk.common.SocketConnection.runIt(ChannelSocket.java:871)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
at java.lang.Thread.run(Thread.java:595)I check in docjar.com, seems like the the line in requestprocessor.java that thrown this exception is
return (handler.execute(exception, config, mapping, form, request, response)); where handler is org.apache.struts.action.ExceptionHandler
any idea guys..
Thanks in advance
pdt -
Error when loading servlet using JDOM
hi,
I'm new in the servlet developpement and I would like to have your helps.
I use JDOM to access to XML files. I use Eclipse WTP, and Tomcat like servlet container.
When I try to load the simple servlet file, I get an exception which shows me that there is java.lang.NoClassDefFoundError: org/jdom/JDOMException.
I think there are problems in the configuration, but I don't know why. Any help would be welcome.
This is my code
import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.util.HashMap;
import java.util.Iterator;
import java.util.List;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
import org.jdom.xpath.XPath;
import org.jdom.*;
* Servlet implementation class for Servlet: test1
public class test1 extends javax.servlet.http.HttpServlet implements javax.servlet.Servlet {
String xparams_input_file="xparamsdata.xml";; //Fichier d'entr�e XML
Document xparams_document;
Element xparams_Element;
/* (non-Java-doc)
* @see javax.servlet.http.HttpServlet#HttpServlet()
public test1() {
super();
/* (non-Java-doc)
* @see javax.servlet.http.HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
doPost(request,response);
/* (non-Java-doc)
* @see javax.servlet.http.HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
// TODO Auto-generated method stub
System.out.println("TestOK");
/* (non-Javadoc)
* @see javax.servlet.GenericServlet#init()
public void Lire_XParams_XML(){
SAXBuilder saxBuilder = new SAXBuilder();
try{
xparams_document = saxBuilder.build(xparams_input_file);
xparams_Element = xparams_document.getRootElement();
catch (JDOMException e)
{ // indicates a well-formedness or other error
//e.printStackTrace();
System.out.println(xparams_input_file + " is not a well formed XML document.");
System.out.println(e.getMessage());
catch (IOException e)
{ // indicates an IO problem
System.out.println(xparams_input_file + " could not be parsed");
System.out.println(e.getMessage());
public void init() throws ServletException {
// TODO Auto-generated method stub
super.init();
System.out.println("TestOK init");
And the errors
HTTP Status 500 -
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: Error instantiating servlet class test1
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
java.lang.Thread.run(Unknown Source)
root cause
java.lang.NoClassDefFoundError: org/jdom/JDOMException
java.lang.Class.getDeclaredConstructors0(Native Method)
java.lang.Class.privateGetDeclaredConstructors(Unknown Source)
java.lang.Class.getConstructor0(Unknown Source)
java.lang.Class.newInstance0(Unknown Source)
java.lang.Class.newInstance(Unknown Source)
org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:175)
org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:74)
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:105)
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:148)
org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:869)
org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
org.apache.tomcat.util.net.MasterSlaveWorkerThread.run(MasterSlaveWorkerThread.java:112)
java.lang.Thread.run(Unknown Source)
note The full stack trace of the root cause is available in the Apache Tomcat/5.5.17 logs.
Apache Tomcat/5.5.17Have u set the classpath for jdom.jar. If u have jdom.jar file in ur machine , set the classpath to that. otherwise download one from the net .
http://www.jdom.org/dist/binary/
put it in ur build path. -
An error when deploying servlet
hello, let's get to the point.
I' ve builf a servlet to insert data using MySQL server.
but there's a problem, when I submit the data via HTML form the error occurs like this :
Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
javax.servlet.UnavailableException
here's the servlet code :
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
import java.sql.*;
public class PostData extends HttpServlet
private Connection con;
private Statement st;
public void init(ServletConfig config)throws ServletException
try
Class.forName(config.getInitParameter("dbDriver"));
con = DriverManager.getConnection(config.getInitParameter("dbName"));
config.getInitParameter("username");config.getInitParameter("password");
st = con.createStatement();
}catch(Exception exception)
exception.printStackTrace();
throw new UnavailableException(exception.getMessage());
protected void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException
String sql;
String nama = request.getParameter("nama");
String major = request.getParameter("major");
response.setContentType("text/html");
PrintWriter out = response.getWriter();
out.println("<?xml version = \"1.0\"?>");
out.println("<!DOCTYPE html PUBLIC \"-//W3C//DTD XHTML 1.0 Transitional//EN\" \"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd\">\n" );
out.println("<html xmlns=\"http://www.w3.org/1999/xhtml\">");
out.println("<head>");
out.println("</head>");
try
sql = "INSERT into mspost (Nama, Major) VALUES (nama, major)";
st.executeUpdate(sql);
out.println("<body>");
out.println("<p>Insert Data Success !!!</p>");
out.println("</body>");
out.println("</html>");
out.close();
}catch(SQLException sqlException)
sqlException.printStackTrace();
out.println("<body>");
out.println("<p>Insert Data Failed !!!</p>");
out.println("</body>");
out.println("</html>");
out.close();
public void destroy()
try
st.close();
con.close();
}catch(SQLException sqlException)
sqlException.printStackTrace();
and here's the web.xml code :
<?xml version="1.0" encoding="ISO-8859-1"?>
<!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>
<servlet>
<servlet-name>kirim</servlet-name>
<description>A simple servlet that store data</description>
<servlet-class>PostData</servlet-class>
</servlet>
<init-param>
<param-name>dbDriver</param-name>
<param-value>com.mysql.jdbc.Driver</param-value>
</init-param>
<init-param>
<param-name>dbName</param-name>
<param-value>jdbc:mysql://localhost/data</param-value>
</init-param>
<init-param>
<param-name>username</param-name>
<param-value>root</param-value>
</init-param>
<init-param>
<param-name>password</param-name>
<param-value>treadstone</param-value>
</init-param>
<servlet-mapping>
<servlet-name>kirim</servlet-name>
<url-pattern>/kirim</url-pattern>
</servlet-mapping>
</web-app>
If someone in this forum ever solve the same proble, please help me
by replying this post.
Thanks,
Best Regards,
CHiall i have in my console is this : (unfortunately, there is no root cause)
type Exception report
message
description The server encountered an internal error () that prevented it from fulfilling this request.
exception
java.lang.NullPointerException
at PostData.doPost(PostData.java:47)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:716)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:809)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:200)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:146)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:209)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:144)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2358)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:133)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:118)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:594)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:116)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:594)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:127)
at org.apache.catalina.core.StandardPipeline$StandardPipelineValveContext.invokeNext(StandardPipeline.java:596)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:433)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:948)
at org.apache.coyote.tomcat4.CoyoteAdapter.service(CoyoteAdapter.java:152)
at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:799)
at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:705)
at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:577)
at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:683)
at java.lang.Thread.run(Thread.java:595) -
Problem running simple servlet on tomcat 4.0
hi,
i have setup tomcat4.0 on the server and i am trying to run a simple servlet but it is not working. here is what i have done:
1. setting the CATALINA_HOME variable to the directory where tomcat is installed
2. setting the classpath variable to servlet.jar
3. i am putting the .class fille in tomcat-home-directory/webapps/ROOTS/WEB-INF/classes
4. i am giving the url as http://localhost:8080/servlet/HelloServlet.class
but error is given...could you please tell where could i have probably made a mistake
regards
preetihi tnguyen1973
now my servlets are running on the server provided they are kept under /examples/WEB-INF/classes. But now i have my own folder at the same level of examples called Lm which also has WEB-INF/classes. but if i put my servlets here it is giving exception.hope u got me. please, tell me where should i make necessary modifications to get the servlets run from my own folder instead of examples
thank u -
Servlet execution threw an exception/NoClassDefFoundError
Hi there, could anyone help me - I'm already desperated !
I always get an error message running (or better trying to run) a servlet on my linux webserver. Servlet worked fine on my Windows ME Apache.
Does anyone know, what the following message mean ? (My English is not so good, but better then my Java-Language)
and (more important) does anyone know what to do (setting classpath ??).
I'm thankfull for any advice !
Best wishes
Apache Tomcat/4.0.1 - HTTP Status 500 - Internal Server Error
type Exception report
message Internal Server Error
description The server encountered an internal error (Internal Server Error) that prevented it from fulfilling this request.
exception
javax.servlet.ServletException: Servlet execution threw an exception
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:201)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2344)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:462)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:163)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1011)
at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1106)
at java.lang.Thread.run(Thread.java:484)
root cause
java.lang.NoClassDefFoundError
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:120)
at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:58)
at java.awt.image.BufferedImage.createGraphics(BufferedImage.java:1011)
at RChartServlet.doGet(RChartServlet.java:147)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:740)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:247)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:193)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:243)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:201)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardContext.invoke(StandardContext.java:2344)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:164)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.valves.ErrorDispatcherValve.invoke(ErrorDispatcherValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:170)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:462)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:564)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:163)
at org.apache.catalina.core.StandardPipeline.invokeNext(StandardPipeline.java:566)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:472)
at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:943)
at org.apache.catalina.connector.http.HttpProcessor.process(HttpProcessor.java:1011)
at org.apache.catalina.connector.http.HttpProcessor.run(HttpProcessor.java:1106)
at java.lang.Thread.run(Thread.java:484)Just hit the same problem (Hopefully you've solved it by now, but others may follow). The problem is down to the server running without any kind of graphics environment. When you start using java.awt classes it tries to load details about the current graphics environment (expecting you to do screen stuff) and there isn't one.
Sun have noticed this and, in 1.4 and above, you can cause a minimal graphics environment to be created (suitable for drawing on BufferedImage). You need to add to the java command that starts your server the parameter
-Djava.awt.headless=true
If we're talking Tomcat the best place for it is probably the JAVA_OPTS variable in the startup scripts.
"Headless" means you're running without a screen, mouse etc..
The previous workarround was to add a valid looking DISPLAY environment variable so that the X-Windows stuff would be avaiable. -
How to install servlet classes in order to compile a simple servlet...
When trying to compile a simple servlet (java file), I get errors having to do with not finding any object of the javax.servlet class. I am using J2SE v.1.4, and from what I know, it does not have built-in support for Servlets-JSP.
Do I need to install myself the servlet classes (downloaded from Sun's site) in order for my servlet to be able to compile and work under tomcat? And if so, where should I put them? Or is there something else I have to do?
Thank you in advance for your assistance!If you have Tomcat already, the files you require are in:
(Tomcat4)
[TOMCAT_HOME]/common/lib/servlet.jar
or
(Tomcat5)
[TOMCAT_HOME]/common/lib/servlet-api.jar
[TOMCAT_HOME]/common/lib/jsp-api.jar
This file needs to be added to your classpath when compiling a servlet.
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