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Ajay Njallacattu

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since Nov 21, 2006
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Recent posts by Ajay Njallacattu

Dear All,

We are planning for a new website which contains the following features.

1) User Login
2) Register
3) Forgot Password
4) Contents
4.1) reviewes
4.2) Rating
5) Ads

This site contains mainly of contents. We are looking for a good solution which help us in updating maintaing the contents regularly and easily. Its not purely content based. So we need a mix of both.

Any suggessions please?

Thanks

Ajay
5 years ago
Thanks for the reply.

Is there a way we can do it at client side?
5 years ago
Hi,

I'm using two web based application (using IE8) and first application requires JRE6 to run and the second required JRE7 to run.

How can this be acheived with a premanent solution or work around?

Please advise.


Ajay
5 years ago
Hi,

We have deployed an Application in Tomcat which is developed using Spring. We are getting the following exception frequently in the Tomcat error log.

Can anyone help us in resolving the same?

org.apache.jasper.runtime.JspFactoryImpl internalGetPageContext
SEVERE: Exception initializing page context
java.lang.IllegalStateException: Cannot create a session after the response has been committed
at org.apache.catalina.connector.Request.doGetSession(Request.java:2433)
at org.apache.catalina.connector.Request.getSession(Request.java:2153)
at org.apache.catalina.connector.RequestFacade.getSession(RequestFacade.java:833)
at javax.servlet.http.HttpServletRequestWrapper.getSession(HttpServletRequestWrapper.java:216)
at org.apache.catalina.core.ApplicationHttpRequest.getSession(ApplicationHttpRequest.java:547)
at org.apache.catalina.core.ApplicationHttpRequest.getSession(ApplicationHttpRequest.java:493)
at org.apache.jasper.runtime.PageContextImpl._initialize(PageContextImpl.java:146)
at org.apache.jasper.runtime.PageContextImpl.initialize(PageContextImpl.java:124)
at org.apache.jasper.runtime.JspFactoryImpl.internalGetPageContext(JspFactoryImpl.java:107)
at org.apache.jasper.runtime.JspFactoryImpl.getPageContext(JspFactoryImpl.java:63)
at org.apache.jsp.ErrorCode_jsp._jspService(ErrorCode_jsp.java:48)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:388)
at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:313)
at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:260)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
at org.apache.catalina.core.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:551)
at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:488)
at org.apache.catalina.core.StandardHostValve.custom(StandardHostValve.java:416)
at org.apache.catalina.core.StandardHostValve.throwable(StandardHostValve.java:270)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:291)
at org.apache.coyote.http11.Http11AprProcessor.process(Http11AprProcessor.java:877)
at org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:594)
at org.apache.tomcat.util.net.AprEndpoint$Worker.run(AprEndpoint.java:1675)
at java.lang.Thread.run(Thread.java:662)


Regards

Ajay
6 years ago
Dear All,

We are using log4j for loggin in our application. The timing is printed in each of the log statements in the log file.

Is there a way to print the executio time of a method or a function call inside a methos using log4j?


Thanks

Ajay
All,

The issue was with respect to the different JDK versions.

Thanks a lot for all the inputs..


Regards

Ajay
7 years ago
Hi,

We have matched the JDK for the development and deployment. Still we are getting the same issue.

Is there anything else we need to do get this working?


Regards

Ajay
7 years ago
Hi,

We are getting the following exception when we try to run a web application in Apache Tomcat.

javax.servlet.ServletException: Error allocating a servlet instance
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$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
java.lang.Thread.run(Thread.java:595)
root cause

java.lang.UnsupportedClassVersionError: Bad version number in .class file
java.lang.ClassLoader.defineClass1(Native Method)
java.lang.ClassLoader.defineClass(ClassLoader.java:620)
java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
org.apache.catalina.loader.WebappClassLoader.findClassInternal(WebappClassLoader.java:1815)
org.apache.catalina.loader.WebappClassLoader.findClass(WebappClassLoader.java:869)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1322)
org.apache.catalina.loader.WebappClassLoader.loadClass(WebappClassLoader.java:1201)
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$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:664)
org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:527)
org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:80)
org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:684)
java.lang.Thread.run(Thread.java:595)

Regards
Ajay
7 years ago
Hi Raj,

I'm not able to do the setting which you have suggested. Could you please be more specific, which will help me?


Regards

Ajay
Hi,

Please find the log for the error which we get during the launch of Eclipse.

!SESSION 2011-06-30 09:19:27.593 -----------------------------------------------
eclipse.buildId=I20110613-1736
java.version=1.6.0_03
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86, WS=win32, NL=en_GB
Framework arguments: -product org.eclipse.epp.package.jee.product
Command-line arguments: -os win32 -ws win32 -arch x86 -product org.eclipse.epp.package.jee.product

!ENTRY org.eclipse.equinox.p2.core 4 0 2011-06-30 09:19:28.734
!MESSAGE Provisioning exception
!STACK 1
org.eclipse.equinox.p2.core.ProvisionException: Unknown repository type at file:/D:/eclipse-jee-indigo-win32/eclipse/configuration/org.eclipse.osgi/bundles/284/data/listener_1925729951/.
at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.fail(AbstractRepositoryManager.java:393)
at org.eclipse.equinox.internal.p2.repository.helpers.AbstractRepositoryManager.doCreateRepository(AbstractRepositoryManager.java:282)
at org.eclipse.equinox.internal.p2.metadata.repository.MetadataRepositoryManager.createRepository(MetadataRepositoryManager.java:41)
at org.eclipse.equinox.internal.provisional.p2.directorywatcher.RepositoryListener.initializeMetadataRepository(RepositoryListener.java:109)
at org.eclipse.equinox.internal.provisional.p2.directorywatcher.RepositoryListener.<init>(RepositoryListener.java:59)
at org.eclipse.equinox.internal.p2.reconciler.dropins.DropinsRepositoryListener.<init>(DropinsRepositoryListener.java:82)
at org.eclipse.equinox.internal.p2.reconciler.dropins.Activator.watchDropins(Activator.java:532)
at org.eclipse.equinox.internal.p2.reconciler.dropins.Activator.start(Activator.java:172)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.resume(AbstractBundle.java:389)
at org.eclipse.osgi.framework.internal.core.Framework.resumeBundle(Framework.java:1130)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:559)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:544)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.incFWSL(StartLevelManager.java:457)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:243)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:438)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:1)
at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:340)
!SUBENTRY 1 org.eclipse.equinox.p2.metadata.repository 4 1005 2011-06-30 09:19:28.734
!MESSAGE Unknown repository type at file:/D:/eclipse-jee-indigo-win32/eclipse/configuration/org.eclipse.osgi/bundles/284/data/listener_1925729951/.

!ENTRY org.eclipse.equinox.p2.reconciler.dropins 4 0 2011-06-30 09:19:28.734
!MESSAGE FrameworkEvent ERROR
!STACK 0
org.osgi.framework.BundleException: Exception in org.eclipse.equinox.internal.p2.reconciler.dropins.Activator.start() of bundle org.eclipse.equinox.p2.reconciler.dropins.
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:734)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.resume(AbstractBundle.java:389)
at org.eclipse.osgi.framework.internal.core.Framework.resumeBundle(Framework.java:1130)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:559)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:544)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.incFWSL(StartLevelManager.java:457)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:243)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:438)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:1)
at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:340)
Caused by: java.lang.IllegalStateException: Could not create metadata repository for: file:/D:/eclipse-jee-indigo-win32/eclipse/configuration/org.eclipse.osgi/bundles/284/data/listener_1925729951/
at org.eclipse.equinox.internal.provisional.p2.directorywatcher.RepositoryListener.initializeMetadataRepository(RepositoryListener.java:112)
at org.eclipse.equinox.internal.provisional.p2.directorywatcher.RepositoryListener.<init>(RepositoryListener.java:59)
at org.eclipse.equinox.internal.p2.reconciler.dropins.DropinsRepositoryListener.<init>(DropinsRepositoryListener.java:82)
at org.eclipse.equinox.internal.p2.reconciler.dropins.Activator.watchDropins(Activator.java:532)
at org.eclipse.equinox.internal.p2.reconciler.dropins.Activator.start(Activator.java:172)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)
... 12 more
Root exception:
java.lang.IllegalStateException: Could not create metadata repository for: file:/D:/eclipse-jee-indigo-win32/eclipse/configuration/org.eclipse.osgi/bundles/284/data/listener_1925729951/
at org.eclipse.equinox.internal.provisional.p2.directorywatcher.RepositoryListener.initializeMetadataRepository(RepositoryListener.java:112)
at org.eclipse.equinox.internal.provisional.p2.directorywatcher.RepositoryListener.<init>(RepositoryListener.java:59)
at org.eclipse.equinox.internal.p2.reconciler.dropins.DropinsRepositoryListener.<init>(DropinsRepositoryListener.java:82)
at org.eclipse.equinox.internal.p2.reconciler.dropins.Activator.watchDropins(Activator.java:532)
at org.eclipse.equinox.internal.p2.reconciler.dropins.Activator.start(Activator.java:172)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl$1.run(BundleContextImpl.java:711)
at java.security.AccessController.doPrivileged(Native Method)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.startActivator(BundleContextImpl.java:702)
at org.eclipse.osgi.framework.internal.core.BundleContextImpl.start(BundleContextImpl.java:683)
at org.eclipse.osgi.framework.internal.core.BundleHost.startWorker(BundleHost.java:381)
at org.eclipse.osgi.framework.internal.core.AbstractBundle.resume(AbstractBundle.java:389)
at org.eclipse.osgi.framework.internal.core.Framework.resumeBundle(Framework.java:1130)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:559)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.resumeBundles(StartLevelManager.java:544)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.incFWSL(StartLevelManager.java:457)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.doSetStartLevel(StartLevelManager.java:243)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:438)
at org.eclipse.osgi.framework.internal.core.StartLevelManager.dispatchEvent(StartLevelManager.java:1)
at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:230)
at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:340)

!ENTRY org.eclipse.osgi 4 0 2011-06-30 09:19:29.046
!MESSAGE Application error
!STACK 1
org.osgi.service.application.ApplicationException: No application id has been found.
at org.eclipse.equinox.internal.app.EclipseAppContainer.startDefaultApp(EclipseAppContainer.java:262)
at org.eclipse.equinox.internal.app.MainApplicationLauncher.run(MainApplicationLauncher.java:29)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:110)
at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:79)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:344)
at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:179)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:622)
at org.eclipse.equinox.launcher.Main.basicRun(Main.java:577)
at org.eclipse.equinox.launcher.Main.run(Main.java:1410)

Regards

Ajay
Bear,

Thanks a lot for you quick responses. Could you suggest me something if you have used any?

Regards

Ajay Joseph
7 years ago
JSP
Hi All,

I was working on eclipse galelio on development of Web Based Application. This is based on MVC architecture. I have worked only on Java Application and new to web based application.

Could any one help me in finalising the directory structure which need to be used in developing web application.


Thanks n Regards

Ajay Joseph

This data is user specific. For this application there can be around 300-400 concurrent users. If we are putting it into session will it impact the performance of the web application?

Is there Caching API through which we can achive this more efficiently?

Please suggest.


Thanks

Ajay Joseph
7 years ago
JSP
Dear All,

I have a web page which is having 4 tabs. The first tab is shown default on the load of the page. When the user clicks on the 2nd tab the data relevent to the second tab is retrieved from Database and displayed. The same happens when you move to 3rd and 4th tab for the first time.

If the user goes back to any tab which is already viewed by this user, I dont want to query it again from the Database. Instead we need to retrive the previous retrived results.

What is the best way to do it? Is there any caching mechanism to achive this.

Thanks n Regards

Ajay Joseph
7 years ago
JSP
Good to see some replies.. The Jpeg contains some values. This is scanned from a hardcopy. for example a ledger etc.
I need to extract these values to some calculation which will be easy if I convert it into txt,csv etc.

Regards

Ajay
8 years ago