Init method in Weblogic 5.1 gives problem

          I have used init method in 4.5
          the same method gives problem in 5.1
          C:\weblogic\myserver\classfiles\jsp_servlet\_addcontract.java:89: The method void init(javax.servlet.ServletConfig) declared in class jsp_servlet._addcontract cannot override the final method of the same signature declared in class weblogic.servlet.jsp.JspBase. Final methods cannot be overridden.
          probably occurred due to an error in /addContract.jsp line 11:

Use jspInit method.
          harish <[email protected]> wrote:
          > I have used init method in 4.5
          > the same method gives problem in 5.1
          > C:\weblogic\myserver\classfiles\jsp_servlet\_addcontract.java:89: The method void init(javax.servlet.ServletConfig) declared in class jsp_servlet._addcontract cannot override the final method of the same signature declared in class weblogic.servlet.jsp.JspBase. Final methods cannot be overridden.
          > probably occurred due to an error in /addContract.jsp line 11:
          Dimitri

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The servlet weblogic.servlet.AsyncInitServlet init method failed

I installed WLS 9.2.2 recently with my app being on 8.1.5 for a long time.
I chose to create a new domain instead of upgrading my existing one.
I use the eclipse 3.2.2 with the WL plugin.
When I start the server and login to the console not using eclipse it works fine.
Trying to start the server and login to the console gives a internal server error.
Any idea what could be wrong? I bolded the parts where I have looked into.
Here is the console output:
<Nov 19, 2008 3:13:02 PM CST> <Notice> <WebLogicServer> <BEA-000395> <Following extensions directory contents added to the end of the classpath:
C:\bea92\weblogic92\platform\lib\p13n\p13n-schemas.jar;C:\bea92\weblogic92\platform\lib\p13n\p13n_common.jar;*C:\bea92\weblogic92\platform\lib\p13n\p13n_system.jar*;C:\bea92\weblogic92\platform\lib\wlp\netuix_common.jar;C:\bea92\weblogic92\platform\lib\wlp\netuix_schemas.jar;C:\bea92\weblogic92\platform\lib\wlp\netuix_system.jar;C:\bea92\weblogic92\platform\lib\wlp\wsrp-common.jar>
<Nov 19, 2008 3:13:03 PM CST> <Info> <WebLogicServer> <BEA-000377> <Starting WebLogic Server with Java HotSpot(TM) Client VM Version 1.5.0_10-b03 from Sun Microsystems Inc.>
<Nov 19, 2008 3:13:05 PM CST> <Info> <Management> <BEA-141107> <Version: WebLogic Server 9.2 MP2 Mon Jun 25 01:32:01 EDT 2007 952826 >
<Nov 19, 2008 3:13:10 PM CST> <Info> <WebLogicServer> <BEA-000215> <Loaded License : C:\bea92\license.bea>
<Nov 19, 2008 3:13:10 PM CST> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to STARTING>
<Nov 19, 2008 3:13:10 PM CST> <Info> <WorkManager> <BEA-002900> <Initializing self-tuning thread pool>
<Nov 19, 2008 3:13:11 PM CST> <Notice> <Log Management> <BEA-170019> <The server log file C:\bea92\user_projects\domains\domain\servers\AdminServer\logs\AdminServer.log is opened. All server side log events will be written to this file.>
<Nov 19, 2008 3:13:15 PM CST> <Notice> <Security> <BEA-090082> <Security initializing using security realm myrealm.>
<Nov 19, 2008 3:13:22 PM CST> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to STANDBY>
<Nov 19, 2008 3:13:22 PM CST> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to STARTING>
<Nov 19, 2008 3:13:30 PM CST> <Error> <HTTP> <BEA-101359> <The servlet weblogic.servlet.AsyncInitServlet init method failed while it was run in the background. The exception was: java.lang.NoClassDefFoundError: com/bea/p13n/management/ApplicationFilePoller$Handler.
java.lang.NoClassDefFoundError: com/bea/p13n/management/ApplicationFilePoller$Handler
     at java.lang.ClassLoader.defineClass1(Native Method)
     at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
     at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
     at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
     at java.net.URLClassLoader.access$100(URLClassLoader.java:56)
     Truncated. see log file for complete stacktrace
>
<Nov 19, 2008 3:13:37 PM CST> <Notice> <Log Management> <BEA-170027> <The server initialized the domain log broadcaster successfully. Log messages will now be broadcasted to the domain log.>
<Nov 19, 2008 3:13:37 PM CST> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to ADMIN>
<Nov 19, 2008 3:13:37 PM CST> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to RESUMING>
<Nov 19, 2008 3:13:39 PM CST> <Notice> <Server> <BEA-002613> <Channel "Default" is now listening on 127.0.0.1:7005 for protocols iiop, t3, ldap, http.>
<Nov 19, 2008 3:13:39 PM CST> <Notice> <WebLogicServer> <BEA-000331> <Started WebLogic Admin Server "AdminServer" for domain "domain" running in Development Mode>
<Nov 19, 2008 3:13:40 PM CST> <Notice> <WebLogicServer> <BEA-000365> <Server state changed to RUNNING>
<Nov 19, 2008 3:13:40 PM CST> <Notice> <WebLogicServer> <BEA-000360> <Server started in RUNNING mode>
<Nov 19, 2008 3:22:04 PM CST> <Error> <HTTP> <BEA-101020> <[weblogic.servlet.internal.WebAppServletContext@d6c6a0 - appName: 'consoleapp', name: 'console', context-path: '/console'] Servlet failed with Exception
java.lang.NullPointerException
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     at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:283)
     at weblogic.servlet.internal.TailFilter.doFilter(TailFilter.java:26)
     Truncated. see log file for complete stacktrace
Edited by: user5384782 on Nov 19, 2008 1:42 PM
Edited by: user5384782 on Nov 19, 2008 3:59 PM

Thanks for your replies adrian and david.
The only thing I see different is that eclipse has different arguments when calling the jvm at the top.
startWebLogic.cmd:
C:\bea92\JDK150~1\bin\java -client -Xms256m -Xmx512m -XX:CompileThreshold=8000
-XX:PermSize=48m -XX:MaxPermSize=128m -Xverify:none -da -Dplatform.home=C:\b
ea92\WEBLOG~1 -Dwls.home=C:\bea92\WEBLOG~1\server -Dwli.home=C:\bea92\WEBLOG~1\i
ntegration -Dweblogic.management.discover=true -Dwlw.iterativeDev= -Dwlw.testC
onsole= -Dwlw.logErrorsToConsole= -Dweblogic.ext.dirs=C:\bea92\patch_weblogic922
\profiles\default\sysext_manifest_classpath -Dweblogic.Name=AdminServer -Djava.s
ecurity.policy=C:\bea92\WEBLOG~1\server\lib\weblogic.policy weblogic.Server
eclipse:
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Eclipse may be calling the cmd I dont know.
I will try upgrading my eclipse like adrian said, but in the meantime I appreciate any further advice/tips.

LDAP Context Initialization Problem in a Servlet's Init method

Hi
I have a servlet where I am using the InitialDirContext to Initialize context to a LDAP Server. I have created the context as a static variable. I am initializing the context in the init method and am using the same reference in the service method of the servlet. But if the context fails (due to naming exception and time out) in the init method all my requests in the service method will fail. Is there any way to validate the reference before using the same in the service method.
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If you want to use threadsafe objects in doPost/doGet there are two common ways to do this.
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If you create on object in init() and use it in doPost/doGet, any time you get two request for the same servlet at the same time you will have synchronization issues that will usually cause problems. There is one instance of each Servlet, so all request for that servlet go through the single instance. Anything in doPost/doGet must be threadsafe.

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[ConnectionProblem.txt]

I am using the weblogic server 6.1 (in production mode)with sybase anyware 6.0
and
i am using the bridge driver to connect to database.
I have tried using the own implementation of coonection pool and also the poool
functionality provided by the weblogic.
It some times give s me the error as follows:
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Can u give the sample code where in i can use connection pool.
I am creating the one datasource instance in the init method of my main controller
servlet and then i am pasing this datasource to the constuctor of the util classes
and the action classes.
The problem is that also sometimes calls the destroy method of the controller
servlet and which again creates a new datasource.
Is there any timeout setting to be done for the post request which can solve this
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Thanks for replies in advance.
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jignesh.
[ConnectionProblem.txt]

The Init() method of abstract pagebean always it excute, and i lost data.

Hi,
I have applicaction to buid in NetBean 6.1 and JDK 1.6 using Visual Web Java Server Pages. This application to present a view that have a 2 calendar component, 1 dropdownlist, button component and table component.
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java.util.Calendar date = GregorianCalendar.getInstance();
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getSessionBean1().getRequerimientoRowSet().getCommand();
getSessionBean1().getRequerimientoDataProvider().refresh();
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error("No puede levantar comando");
log("Cannot switch to person " +
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String command = "SELECT ALL codreqgmc, fechareq,cliente.nomclie,estado.Descripcion as Estado, " +
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Result prove
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I need execute init method only one , at first time
I hope i undertandme, i not native english.
Thank for advance

Anupama,
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By the way, wdDoInit in component controller (do not confuse with custom controller or interface controller) is called before any other method in any controller. So I hardly believe that it is not called when your view become available.
Valery Silaev
SaM Solutions
http://www.sam-solutions.net

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c00ler wrote:
Hey guys,
Studying JDBC & Java by O'Reilly. Old book, very old. You'd be better off with the Sun JDBC tutorial. Google for it.
init() method is not really explained in the book and i'm kind of stuck. As far as i understand it's used to initialise servlet before its execution right? O'Reilly uses it to connect to the database (i'm find with connection part), problem is i don't understand why i can't connect through proccessRequest() method and I can't actually find the init() method within servlet...unless of course i write my own one. There is code offered by O'Reilly:
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Book was published quite a few years ago...is there different implementation to this?
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%

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Please download it and check with your application.
you can find free download at http://developer.iplanet.com/appserver/testdrive/testdrive_65.html
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          <taglib-location>/WEB-INF/netui-tags-html.tld</taglib-location>
          </taglib>
          <taglib>
          <taglib-uri>/WEB-INF/struts-bean.tld</taglib-uri>
          <taglib-location>/WEB-INF/lib/struts-bean.tld</taglib-location>
          </taglib>
          <taglib>
          <taglib-uri>/WEB-INF/struts-logic.tld</taglib-uri>
          <taglib-location>/WEB-INF/lib/struts-logic.tld</taglib-location>
          </taglib>
          <taglib>
          <taglib-uri>/WEB-INF/struts-html.tld</taglib-uri>
          <taglib-location>/WEB-INF/lib/struts-adapter-html.tld</taglib-location>
          </taglib>
          <taglib>
          <taglib-uri>um.tld</taglib-uri>
          <taglib-location>/WEB-INF/lib/um_taglib.jar</taglib-location>
          </taglib>
          </jsp-config>
          </web-app>

How servlet's init method is overridden ?

Here is a sample code to override servlet's init method.
public class BookDBServlet ... {
        private BookstoreDB books;
        public void init(ServletConfig config) throws ServletException {
            // Store the ServletConfig object and log the initialization
            super.init(config);
            // Load the database to prepare for requests
            books = new BookstoreDB();
    }I dont get why super.init(config); is called.
Comment says +// Store the ServletConfig object and log the initialization+
what does "Store" mean here ? Where it is stored ?
how it is logged ( log4j / commons -logging ? ) and where (which file) it is logged ?
Can we remove this line without any damage ?

There are several calls you can make to the servlet object which are simply delegated to the ServletConfig object, most notably getServletContext(). The default action of the init(SerletConfig config) method is to store the config in a field which is defined in GenericServlet, so that these calls can work. If you don't do this then calling getServletContext() at some later time will give you a NullPointerException.
I think the reference to logging is that, if you use the built in servlet logging system, rather than log4j or java.util.loging then this depends on a valid servlet context, which in turn, depends on a valid servlet config reference.

Why does SunOne 6.1 call servlet init() method twice on startup

Hi,
SunOne6.1 sp 5 is running my servlet's init() method twice when I put load-on-startup in the web-xml file. Is this a known problem and is there a work around as no amount of synchronising seems to work.
I'm running 2.3.dtd for the default_web.xml file and my entries look like this :-
<servlet>
<servlet-name>RelatisLogin</servlet-name>
<servlet-class>com.MyServlet</servlet-class>
<load-on-startup>7</load-on-startup>
</servlet>
This init method only contains a basic check at the moment :-
public void init()
System.out.println("init.....");
If I take <load-on-startup> away and run the server then call the servlet via the url it only runs init once.
I've tried synchronizing the block but this doesn't work.
The synchonization code I used looks like this:-
public void init(ServletConfig config) throws ServletException
synchronized( AnotherClass.staticString )
if ( AnotherClass.staticString.length() > 0 ) return;
System.out.println( AnotherClass.staticString.length() );
AnotherClass.staticString = "init has been called";
try
int i = 0;
i = i/i;
} catch(Exception e)
e.printStackTrace();
The declaration of "AnotherClass.staticString" is :-
public static String staticString = "";
The output of "System.out.println( AnotherClass.staticString.length() );" is 0 and displayed twice.
I deliberately cause a divide by zero error to get a stack trace so that i can determine what called init(), the stack trace is printed twice and is always :-
java.lang.ArithmeticException: / by zero
at com.MyServlet.init(MyServlet.java:47)
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:921)
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:813)
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3478)
at org.apache.catalina.core.StandardContext.start(StandardContext.java:3760)
at com.iplanet.ias.web.WebModule.start(WebModule.java:251)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1133)
at org.apache.catalina.core.StandardHost.start(StandardHost.java:652)
at org.apache.catalina.core.ContainerBase.start(ContainerBase.java:1133)
at org.apache.catalina.core.StandardEngine.start(StandardEngine.java:355)
at org.apache.catalina.startup.Embedded.start(Embedded.java:995)
at com.iplanet.ias.web.WebContainer.start(WebContainer.java:431)
at com.iplanet.ias.web.WebContainer.startInstance(WebContainer.java:500)
at com.iplanet.ias.server.J2EERunner.confPostInit(J2EERunner.java:161)
It looks like SunOne starts then calls init() and then restarts and calls init() again.
The same code and same web.xml entries work fine in Tomcat 5, init() only every gets called once.
Any ideas? Can I post this as a bug?
Thanks in advance for any help.
Chris.

Sorry to have not replied to this thread earlier.....forgot all about it.
The reason init was being called twice by IPanet (Sun One) is IPanet comes with a default context called "Search" already in server.xml file.
This context was loading all the classes on my class path and this causing "init" to run. Then my context entry also loaded all the files in the class path.
Quite why Sun include this "Search" context is beyond me......annoying. If you take it out the the problem goes away.
Basically if you leave this in then your running to web servers (JVM's) your one and Sun's stupid "Search" one. As they are separate JVM's no amount of synchronisation would ever fix it.

EPCF : Error in Init Method

Hi all,
When i try to run my EPCF , I'm getting the following error , please let me get some suggestion on this.
EXCEPTION]
#1#com.sapportals.portal.prt.component.PortalComponentException: Error in init method
Component : Framework.MyProducer
at com.sapportals.portal.prt.component.PortalComponentContext.init(PortalComponentContext.java:251)
at com.sapportals.portal.prt.core.broker.PortalComponentContextItem.refresh(PortalComponentContextItem.java:267)
at com.sapportals.portal.prt.core.broker.PortalComponentContextItem.getContext(PortalComponentContextItem.java:312)
at com.sapportals.portal.prt.component.PortalComponentRequest.getComponentContext(PortalComponentRequest.java:385)
at com.sapportals.portal.prt.connection.PortalRequest.getRootContext(PortalRequest.java:435)
at com.sapportals.portal.prt.core.PortalRequestManager.runRequestCycle(PortalRequestManager.java:607)
at com.sapportals.portal.prt.connection.ServletConnection.handleRequest(ServletConnection.java:240)
at com.sapportals.portal.prt.dispatcher.Dispatcher$doService.run(Dispatcher.java:545)
at java.security.AccessController.doPrivileged(Native Method)
at com.sapportals.portal.prt.dispatcher.Dispatcher.service(Dispatcher.java:405)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.sap.engine.services.servlets_jsp.server.servlet.InvokerServlet.service(InvokerServlet.java:156)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:390)
at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:264)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:347)
at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:325)
at com.sap.engine.services.httpserver.server.RequestAnalizer.invokeWebContainer(RequestAnalizer.java:887)
at com.sap.engine.services.httpserver.server.RequestAnalizer.handle(RequestAnalizer.java:241)
at com.sap.engine.services.httpserver.server.Client.handle(Client.java:92)
at com.sap.engine.services.httpserver.server.Processor.request(Processor.java:148)
at com.sap.engine.core.service630.context.cluster.session.ApplicationSessionMessageListener.process(ApplicationSessionMessageListener.java:33)
at com.sap.engine.core.cluster.impl6.session.MessageRunner.run(MessageRunner.java:41)
at com.sap.engine.core.thread.impl3.ActionObject.run(ActionObject.java:37)
at java.security.AccessController.doPrivileged(Native Method)
at com.sap.engine.core.thread.impl3.SingleThread.execute(SingleThread.java:100)
at com.sap.engine.core.thread.impl3.SingleThread.run(SingleThread.java:170)
Caused by: com.sapportals.portal.prt.component.PortalComponentException: Cannot find JSP file: MyProducer.jsp
at com.sapportals.portal.prt.core.broker.JSPComponentItem.getComponentInstance(JSPComponentItem.java:132)
at com.sapportals.portal.prt.core.broker.PortalComponentItem.getComponentInstance(PortalComponentItem.java:732)
at com.sapportals.portal.prt.component.PortalComponentContext.getComponent(PortalComponentContext.java:103)
at com.sapportals.portal.prt.component.PortalComponentContext.init(PortalComponentContext.java:242)
My portalapp.xml
<?xml version="1.0" encoding="utf-8"?>
<application>
<application-config>
<property name="SharingReference" value="com.sap.portal.htmlb"/>
</application-config>
<components>
<component name="MyProducer">
<component-config>
<property name="ComponentType" value="jspnative"/>
<property name="JSP" value="MyProducer.jsp"/>
<property name="SecurityZone" value="com.customer.portal/high_safety"/>
</component-config>
<component-profile>
<property name="tagLib" value="/SERVICE/htmlb/taglib/htmlb.tld"/>
</component-profile>
</component>
<component name="MyConsumer">
<component-config>
<property name="ComponentType" value="jspnative"/>
<property name="JSP" value="MyConsumer.jsp"/>
<property name="SecurityZone" value="com.customer.portal/high_safety"/>
</component-config>
<component-profile>
<property name="tagLib" value="/SERVICE/htmlb/taglib/htmlb.tld"/>
</component-profile>
</component>
</components>
<services/>
</application>

Hi Bris,
The problem is that the MyProducer.jsp cannot be found (this has absolutely nothing to do with EPCF). Probably you have put it into the wrong path: "This path is relative to the private resources (in PORTAL-INF in PAR) of the portal application", see http://help.sap.com/saphelp_erp2004/helpdata/en/16/d12c413894f823e10000000a155106/frameset.htm
I.e., if you have put it under .../PORTAL-INF/pagelet/MyProducer.jsp, the corresponding portalapp.xml entry must read:
<property name="JSP" value="pagelet/MyProducer.jsp"/>
Hope it helps
Detlev

How to modify build.xml ant to invoke a static init method when building?

Hello,
I´d like to make it as such that when I select to build and clean project in netbeans it calls a specific static init method in one of the project classes (which actually generates the database file). //for that purpose that code is only needed there. Is it possible?

hi.. please help me with this problem...
i need to execute tomcat server using my ant build file... but how can i do that if the tomcat server is located in other PC... i tried the exec task, but it seems to be not enough... the server doesn't run on the other pc but my it seems fine on my console.
by the way, here's my code...
<target name="run_tomcat">
<exec dir="${src.dir}" executable="cmd">
<arg line="/c startup.bat" />
</exec>
<echo message="tomcat successfully running!!!"/>
</target>
my src.dir has value in the properties file which contains the mapped directory. please tell me.. is it really possible to run a program in other PC using my build file in my PC...
please....please....please....please.... heeeelllpppp!!!!
tnx a lot!!!!

Monitoring progress of init() method in servlet

the init() method of my servlet is extremely long; it will probably take several minutes to load. For this reason, I want to have my servlet print its progress periodically. Unfortunately, when initializing a servlet, Tomcat does not allow the System.out.println() method to do anything.
Is there a way to tell tomcat to print something to the screen while it is initializing the servlets?

You can write jamon monitors after each event that occurs in the init method. Then if you go to the jamonadmin page you can see the progress. You will find many other uses for jamon too. One thng that it does real well is to allow you to look at what is currently executing in your web application via the jamonadmin page.
It is easy to use. Really just 2 methods: start and stop. see below. You should be able to get it working in minutes.
jamon is an open source project. Also if you use the servlet filter it will keep stats such as hits, and time stats (avg, total, min, max) and more.
import com.jamonapi.*;
// i'm not sure of the actual signature name, but this should give you the point.
public void init() {
Monitor mon=MonitorFactory.start("executing Part1 Of Init")
... part 1...
mon.stop();
Monitor mon=MonitorFactory.start("executing Part2 Of Init")
... part 2...
mon.stop();To get jamon go to www.jamonapi.com. There is also a live program that lets you see the JAMonAdmin.jsp page in action.
steve - http://www.jamonapi.com

Init method in Weblogic 5.1 gives problem

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