WebLogic cant execute a servlet
Hi!
Does anybody know how to debug or get more information about such a situation?
There are some servlets working on Sun with WebLogic.
Log file show me:
####<Nov 27, 2002 12:44:34 PM EET> <Error> <Posix Performance Pack> <egw> <agserver> <ExecuteThread: '59' for queue: 'default'> <> <> <000000> <Uncaught Throwable in processSockets>
java.lang.NullPointerException
at weblogic.socket.TunnelContext.getServlet(TunnelContext.java:24)
at weblogic.servlet.internal.MuxableSocketHTTP.dispatch(MuxableSocketHTTP.java:465)
at weblogic.socket.PosixSocketMuxer.deliverGoodNews(PosixSocketMuxer.java:456)
at weblogic.socket.PosixSocketMuxer.processSockets(PosixSocketMuxer.java:385)
at weblogic.socket.SocketReaderRequest.execute(SocketReaderRequest.java:23)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:137)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:120)
it's my very first time of working with java,
sorry if the question looks stupid.
Hi,
use the try catch block and post the stack trace. Without it its difficult to judge where the problem is.
Seetesh
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Trita Tripathi <[email protected]> wrote in message
news:[email protected]...
> Hi,
> I am trying to make a URL connection to a particular site and trying
> to execute the servlet at the site specified and then storing the image
> pointed to by the servlet in a tmp location.I am passing the servlet id
> in the param Parameter.and the
> HTTP link in the URLString.
> This code worked fine with a CGI script but is not working
> properly with a servlet.
> /*
> A sample servlet code
> <img SRC=http://xyz/ABCServlet?imageKey=51752
> 2881"/>
> */
>
> private String executeServlet(String URLString, String param) {
>
> try {
> URL url = new URL(URLString);
> URLConnection connection = url.openConnection();
> connection.setDoOutput(true);
>
> PrintWriter out = new
> PrintWriter(connection.getOutputStream());
> out.println(param) ;
> out.close();
>
> BufferedReader in = new BufferedReader(new
> InputStreamReader(
> connection.getInputStream()));
> String inputLine;
> String inputData = "" ;
>
> while ((inputLine = in.readLine()) != null)
> inputData = inputData + inputLine ;
>
> in.close();
>
> System.out.println(inputData) ;
> return inputData ;
> }
> Could anyone one help me out in this.
>
> Thanks,
> Trita
>
>
>
>
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Message was edited by:
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Hello,
I wnt to execute a servlet I use a Tomcat to do it
webapps/mySevletTest/Web-INF/classes/HelloServlet.java
in web.xml
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<servlet-class>HelloServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>HelloServlet</servlet-name>
<url-pattern>/HelloServlet</url-pattern>
</servlet-mapping>
to execute
http://localhost:8080/mySevletTest/HelloServlet
Error : The requested resource (/ServletTest/HelloServlet) is not available.
why ????
thanksI have put the class in a package org
package org;
import java.io.*;
import javax.servlet.*;
import javax.servlet.http.*;
public class HelloServlet extends HttpServlet
public void service(HttpServletRequest request, HttpServletResponse response)throws IOException
response.setContentType("text/html");
PrintWriter writer = response.getWriter();
writer.println("<html>\n");
writer.println("<head>\n");
writer.println("<title>Test</title>\n");
writer.println("</head>\n");
writer.println("<body>\n");
writer.println("<h1>Hallo Issam</h1>\n");
writer.println("<br>\n");
writer.println("<h3>Test for Servlet ist successfull ...</h3>\n");
writer.println("</body>\n");
writer.println("</html>\n");
}/WEB-INF/classes/org/HelloServlet.class
the phad of aaplication
webapps/myServletTest/WEB-INF/classes/org/HelloServlet.java
in web.xml
<servlet>
<servlet-name>HelloServlet</servlet-name>
<servlet-class>HelloServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>HelloServlet</servlet-name>
<url-pattern>/HelloServlet</url-pattern>
</servlet-mapping>
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Dears All,
could you confirm weblogic v6.1 can support J2EE v1.3 and especially Servlet API v2.3 ?
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Peace,
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Tangosol, Inc.
http://www.tangosol.com
+1.617.623.5782
WebLogic Consulting Available
"Tajdar Siddiqui" <[email protected]> wrote in message
news:3b043919$[email protected]..
>
> I read somewhere that Weblogic 6.0 supports Servlet Api 2.3 ( which in
turn support
> http Filters etc.).
>
> I searched the Weblogic docs site for 6.0 and there is no mention of
Servlet Api
> 2.3 over there. Can someone pls. validate this.
>
> Thanx,
> Tajdar
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I read somewhere that Weblogic 6.0 supports Servlet Api 2.3 ( which in turn support
http Filters etc.).
I searched the Weblogic docs site for 6.0 and there is no mention of Servlet Api
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Thanx,
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Tangosol, Inc.
http://www.tangosol.com
+1.617.623.5782
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"Tajdar Siddiqui" <[email protected]> wrote in message
news:3b043919$[email protected]..
>
> I read somewhere that Weblogic 6.0 supports Servlet Api 2.3 ( which in
turn support
> http Filters etc.).
>
> I searched the Weblogic docs site for 6.0 and there is no mention of
Servlet Api
> 2.3 over there. Can someone pls. validate this.
>
> Thanx,
> Tajdar
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Weblogic 7.0 startup servlet problem
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I'm trying to do the .ear file deployment.
Thank you very much
Santhosh.
<Dec 30, 2002 12:04:27 PM PST> <Error> <HTTP> <101216> <Servlet:
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javax.servlet.ServletException: com/lbx/util/LbxProperties
at weblogic.servlet.internal.ServletStubImpl.createServlet(ServletStubImpl.java:912)
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at weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubImpl.java:773)
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at weblogic.servlet.internal.WebAppServletContext.preloadServlets(WebAppServletContext.java:2708)
at weblogic.servlet.internal.WebAppServletContext.preloadResources(WebAppServletContext.java:2681)
at weblogic.servlet.internal.WebAppServletContext.setStarted(WebAppServletContext.java:4746)
at weblogic.servlet.internal.WebAppModule.start(WebAppModule.java:539)
at weblogic.j2ee.J2EEApplicationContainer.start(J2EEApplicationContainer.java:983)
at weblogic.j2ee.J2EEApplicationContainer.activate(J2EEApplicationContainer.java:1017)
at weblogic.management.deploy.slave.SlaveDeployer.processPrepareTask(SlaveDeployer.java:1112)
at weblogic.management.deploy.slave.SlaveDeployer.prepareUpdate(SlaveDeployer.java:732)
at weblogic.drs.internal.SlaveCallbackHandler$1.execute(SlaveCallbackHandler.java:24)
at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:153)
at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:134)
>
Hi Santhosh,
Yeah , if its part of the system class path, it should find it. How are u referencing
the file? Try wrapping the code that gets the Resource and see what exception
you get.
-Raj
"Santhosh Kumar" <[email protected]> wrote:
>
>Raj, you are right. I'm trying to load the properties from within the
>that class.
>However, path (external to ear file) where I placed all those properties
>is part
>of system class path. So wl should find those property files, right?
>
>-Santhosh.
>
>"Raj" <[email protected]> wrote:
>>
>>Hi
>>Are you trying to load any property file in your startup servlet? I
>think
>>WL does
>>not extract the file "automatically" from within the war file. You should
>>probably
>>try referencing the file using some other mechanism or try loading it
>>from ur
>>EJB(as EJB JARs are loaded before WARs).
>>
>>-Raj
>>
>>
>>[email protected] (Santhosh Kumar) wrote:
>>>I have added a new startup servlet to my existing web application.
>>>While deploying the same, weblogic is throwing the following
>>>exception.
>>>
>>>I'm very sure that class (com/lbx/util/LbxProperties) is part of
>>>webapp war file I created. Can somebody please throw some light about
>>>this.
>>>
>>>I'm trying to do the .ear file deployment.
>>>
>>>Thank you very much
>>>Santhosh.
>>>
>>><Dec 30, 2002 12:04:27 PM PST> <Error> <HTTP> <101216> <Servlet:
>>>"StartupServlet" failed to preload on startup in webapp: "wliWEB"
>>>javax.servlet.ServletException: com/lbx/util/LbxProperties
>>> at weblogic.servlet.internal.ServletStubImpl.createServlet(ServletStubImpl.java:912)
>>> at weblogic.servlet.internal.ServletStubImpl.createInstances(ServletStubImpl.java:833)
>>> at weblogic.servlet.internal.ServletStubImpl.prepareServlet(ServletStubImpl.java:773)
>>> at weblogic.servlet.internal.WebAppServletContext.preloadServlet(WebAppServletContext.java:2763)
>>> at weblogic.servlet.internal.WebAppServletContext.preloadServlets(WebAppServletContext.java:2708)
>>> at weblogic.servlet.internal.WebAppServletContext.preloadResources(WebAppServletContext.java:2681)
>>> at weblogic.servlet.internal.WebAppServletContext.setStarted(WebAppServletContext.java:4746)
>>> at weblogic.servlet.internal.WebAppModule.start(WebAppModule.java:539)
>>> at weblogic.j2ee.J2EEApplicationContainer.start(J2EEApplicationContainer.java:983)
>>> at weblogic.j2ee.J2EEApplicationContainer.activate(J2EEApplicationContainer.java:1017)
>>> at weblogic.management.deploy.slave.SlaveDeployer.processPrepareTask(SlaveDeployer.java:1112)
>>> at weblogic.management.deploy.slave.SlaveDeployer.prepareUpdate(SlaveDeployer.java:732)
>>> at weblogic.drs.internal.SlaveCallbackHandler$1.execute(SlaveCallbackHandler.java:24)
>>> at weblogic.kernel.ExecuteThread.execute(ExecuteThread.java:153)
>>> at weblogic.kernel.ExecuteThread.run(ExecuteThread.java:134)
>>>>
>>
>
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WebLogic Server vs Embedded Servlet Engine
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hi.
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What are the differences between Server and Express. I've read that
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I downloaded various copies of WebLogic. I'm trying to work with WebLogic 7.0sp4
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WebLogic 6.0 imports the EAR and deploys the beans with no problem. AND after
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WebLogic 7.0 imports the EAR file, recompiles the beans, and deploys them. If
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Is there a separate setting to increase the Heap Size used by the Console Servlet?
I'm already using the "-Xms350m -Xmx600m" options when starting WebLogic to set
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I'm including:
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[files.zip]I do not think this is the right group for your issue. Please post it in the appropriate
one.
"Bill Horan" <[email protected]> wrote:
>
>
>
I downloaded various copies of WebLogic. I'm trying to work with WebLogic
7.0sp4
on a Windows 2000 Server machine, but it's not working well at all.
I have a
very simple set-up - one JDBC connection pool to an Oracle database,
and one EAR
file. This should work easily.
I have a WebLogic 6.0 produced EAR file. The EAR files contains about
110 Entity
BMP EJBs, about 35 Stateless Session EJBs, and 1 Stateful Session EJB,
as well
as a collection of supporting Java classes.
WebLogic 6.0 imports the EAR and deploys the beans with no problem.
AND after
deploying the beans, WebLogic 6.0 still lets you start a WebLogic Administrative
Console to interact with and manage the WebLogic server. WebLogic 6.0
doesn't
seem to have any problems.
WebLogic 7.0 imports the EAR file, recompiles the beans, and deploys
them. If
you DON'T start an admin console, then you can ping the server, ask the
server
for its state, etc. - and everything seems fine. Once you start an admin
console
and try to get to the login page of the admin console, THEN WebLogic
7.0 runs
out of memory. I've already bumped the minimum heapsize up to 350MB
and maxsize
to over 600MB. The application never even uses more than 100MB of real
memory
before it crashes with an out-of-memory error. Something about starting
the admin
console is crashing the server. The console servlet runs out of memory.
Why?
Is there a separate setting to increase the Heap Size used by the Console
Servlet?
I'm already using the "-Xms350m -Xmx600m" options when starting WebLogic
to set
aside at least 350MB of heap space.
I'm including:
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hai friends,
I am trying to execute a simple servlet in tomcat but I couldn't..
please help meCan you execute the default Servlets in Tomcat which are found in the "Examples" folder ? http://localhost:<PORT NO>/examples/
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Apache Tomcat 4 error - cant fine a servlet
Hi,
I have a web.xml file that defines classes and url patterns fine. For some reason though, which I cant work out, even when I add the following to web.xml, Tomcat says it cant find the requested resourse.
http://localhost:8080/servlet/SimpleShoppingBasket
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<url-pattern>/servlet/SimpleShoppingBasket</url-pattern>
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type Status report
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Apache Tomcat/5.5.17
Every other servlet I have runs fine except this one. I have checked the spelling of the class and it is correct. I am nearing my wits end!
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Check the tomcat logs for any errors that servlet may be creating ([TOMCAT]/logs directory)
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Do Weblogic 5.1 support servlet 2,2 web.xml?
Found that a lot of tags in web.xml according to Java servlet 2.2 API didn't work in Weblogic server 5.1, tags such as <session-mapping>, <session-timeout> didn't work at all. Is these tags didn't support in 5.1?
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after I correct it.
But the <session-timout> tag still didn't work.
I set it up as follow in my web.xml:
<session-config>
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instead of my preset 30 seconds in the web.xml:
public void doGet(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
HttpSession session = request.getSession();
response.setContentType("text/html");
OutputStreamWriter osw = new OutputStreamWriter(response.getOutputStream());
PrintWriter out = new PrintWriter (response.getOutputStream());
out.println("<html>");
out.println("<head><title>HelloWorld</title></head>");
out.println("<body>Hello From HelloWorld doGet()");
out.println("<P>Session will be timeout for " + session.getMaxInactiveInterval()
+ " secs.");
out.println("</body></html>");
out.close();
Kumar Allamraju <[email protected]> wrote:
><!doctype html public "-//w3c//dtd html 4.0 transitional//en">
><html>
>Do you mean servlet mapping? I can't seem to find out session-mapping
>in
>the dtd
><br>Yes we do support session-timeout in 5.1
><br>see http://www.weblogic.com/docs51/classdocs/webappguide.html
><p>--
><br>Kumar
><p>Alfred Leung wrote:
><blockquote TYPE=CITE>Found that a lot of tags in web.xml according to
>Java servlet 2.2 API didn't work in Weblogic server 5.1, tags such as
><session-mapping>,
><session-timeout> didn't work at all. Is these tags didn't support
>in
>5.1?</blockquote>
></html>
>
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How to execute a servlet onload
Hi everyone,
I am very new to servlets. I have a jsp page that calls a servlet which is executed on a submit button within a form.
It works, returning the data to the page. However I would like my servlet to be executed on load of the jsp. A tutorial that covers this area would be great.
If you have a suggestion please post a response.. Thanks.
<form name="data_form" method="post" action="Controller">
<input type="hidden" name="action" value="getData"/ >
</form>
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
//String action = request.getServletPath().substring(1, request.getServletPath().indexOf("."));
String action = (String)request.getParameter("action");
// select application logic
String target = null;
try {
if(action.equals("getData")){
DataManager data = new DataManager();
request.setAttribute("Data", data.getData());
target = "/data.jsp";
}catch(RuntimeException e){
e.printStackTrace();
}Edited by: _AlyssaK on May 29, 2009 8:49 AMOnload? I've had a laugh, seriously :)
Create a Servlet class and implement doGet() wherein you do the desired loading tasks and finally forward the request to a JSP file and in the JSP file just access the loaded data through taglibs/EL. Finally map that servlet on an url-pattern and call it in your browser.
E.g. (semi pseudo)
doGet(request, response) {
Data data = dataDAO.load();
request.setAttribute("data", data);
request.getRequestDispatcher("data.jsp").forward(request, response);
}data.jsp
<p>The data is: ${data}</p>web.xml
<servlet-mapping>
<servlet-name>yourServlet</servlet-name>
<url-pattern>/data</url-pattern>
</servlet-mapping>Then invoke it on [http://hostname:port/contextroot/data]. -
Weblogic 9.2 and servlet 2.3
I'm trying to run a web application with servlet 2.3 standard in weblogic 9.2.
I have some Servlet Filters configured in it but none of them seems to be invoked when requesting a page.
The application works fine in Tomcat 5.0.28.
I have also tried to update web.xml to servlet 2.4 by adding the <dispatch> tag to <servlet-mapping> but the problem still remain.
Am i missing something ?
How can i run web application with servlet 2.3 standard on weblogic 9.2 ?
I'd like to run the application with servlet 2.3 standard as i have some custom tag translating expression language so i do not want the application server to parse expression language too.
Thanx
IvanWLS 9.2 does support servlet2.3 standard applications. It is hard to tell if there is something missing in your web.xml. Would you please attach your simplified web.xml here? Maybe someone can help you out.
Thanks,
-Fred
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