7:10 a.m.
Kousik Rajendran [http://community.jboss.org/people/kousikraj] created the discussion
"Re: JNDI Lookup fails in JBoss AS 7 [java.naming.CommunicationException]"
To view the discussion, visit: http://community.jboss.org/message/638361#638361
--------------------------------------------------------------
Hi Abiya,
All you need to do is a very simple arroach. As http://community.jboss.org/people/wdfink
Wolf-Dieter Fink told
The datasource should only be available inside the server and your
code looks like a standalone client.
You should try running only within JBoss AS 7 Environment. Which means, *you cannot try
connecting from a standalone Java code.* You should try putting the code inside your web
application and test.
What you can do is, *put this block inside a test servlet and deploy and test i*t. This
should work. Note: there is *no need for you to set any property*.
DataSource ds = null;
Context ctx = null;
try {
String strDSName = "java:jboss/datasources/Test";
ctx = new InitialContext();
ds = (javax.sql.DataSource) ctx.lookup(strDSName);
} catch (Exception e) {
}
Hope this works for you.
You can check in deatail on how it works in here
http://kousikraj.wordpress.com/2011/11/25/datasource-configuration-setup-...
http://kousikraj.wordpress.com/2011/11/25/datasource-configuration-setup-...
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2:05 p.m.
abiya [http://community.jboss.org/people/abiya] created the discussion
"Re: JNDI Lookup fails in JBoss AS 7 [java.naming.CommunicationException]"
To view the discussion, visit: http://community.jboss.org/message/638534#638534
--------------------------------------------------------------
Hi Kousik,
Thanks for the reply.I tried and it works fine in servlet.I need to have lookup from
filter's init() method which looks like a problem again. It throws
javax.naming.NameNotFoundException. Any input on this would be of great help.
Thanks,
Abiya
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4:43 a.m.
Kousik Rajendran [http://community.jboss.org/people/kousikraj] created the discussion
"Re: JNDI Lookup fails in JBoss AS 7 [java.naming.CommunicationException]"
To view the discussion, visit: http://community.jboss.org/message/638838#638838
--------------------------------------------------------------
Hey Abiya,
I tried in init() method of a servlet container too. it works fine. Here is the test
servlet
import java.io.IOException;
import javax.naming.Context;
import javax.naming.InitialContext;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.sql.DataSource;
@WebServlet("/test")
public class TestGateway extends AbstractGateway {
private static final long serialVersionUID =
5756805325624066368L;
@Override
public void init() throws ServletException {
super.init();
DataSource ds = null;
Context ctx = null;
try {
String strDSName = "java:jboss/datasources/Test";
ctx = new InitialContext();
ds = (javax.sql.DataSource) ctx.lookup(strDSName);
System.out.println("Success getting DS : " + ds.getClass());
} catch (Exception e) {
System.out.println("Error getting DS : " + e);
}
}
When I execute http://localhost:8080/test/test http://localhost:8080/test/test
I got my output like this in console.
16:11:51,818 INFO [stdout] (http--0.0.0.0-8080-2) Success getting DS
: class org.jboss.jca.adapters.jdbc.WrapperDataSource
So, I think there should be
some problem in your Servlet or I am not able to get your problem. Can you detail a little
bit in your case.
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6:41 a.m.
abiya [http://community.jboss.org/people/abiya] created the discussion
"Re: JNDI Lookup fails in JBoss AS 7 [java.naming.CommunicationException]"
To view the discussion, visit: http://community.jboss.org/message/638860#638860
--------------------------------------------------------------
Hi Koushik,
I was trying to access in the init method of startupservlet
**public **class** StartupServlet *extends* HttpServlet
**
{
// Initializing Logger.
//private static MLogger s_logger = new MLogger(ServeImagesServlet.class);
/**
* init method
*/
**public** **void** init(ServletConfig a_config) **throws** ServletException
{
**super**.init(a_config);
System.++out++.println("StartupServlet.init() called.");
**try**
{
InitialContext ctx = **new** InitialContext();
DataSource ds = (javax.sql.DataSource)
ctx.lookup("java:jboss/datasources/Test");
System.++out++.println("context info in StratupServlet init method...."
+ds);
}
**catch**(NamingException e) {
// **TODO**
Auto-generated catch block
e.printStackTrace();
}
}
And I get the following error,
17:58:09,306 ERROR [stderr] (MSC service thread 1-2) javax.naming.NameNotFoundException:
java:jboss/datasources/Test
17:58:09,306 ERROR [stderr] (MSC service thread 1-2) at
org.jboss.as.naming.InitialContext.lookup(InitialContext.java:55)
17:58:09,306 ERROR [stderr] (MSC service thread 1-2) at
org.jboss.as.naming.NamingContext.lookup(NamingContext.java:209)
17:58:09,306 ERROR [stderr] (MSC service thread 1-2) at
javax.naming.InitialContext.lookup(Unknown Source)
17:58:09,306 ERROR [stderr] (MSC service thread 1-2) at
com.common.web.servlet.StartupServlet.init(StartupServlet.java:40)
I get similar error when I try to access from init method of filter as well.
I have another basic question,
suppose I invoke a method in utility class from servlet.... will I be able to get the
initialcontext using
InitialContext ctx = **new** InitialContext(); in the utility class?
Thanks,
Abiya
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7 a.m.
Kousik Rajendran [http://community.jboss.org/people/kousikraj] created the discussion
"Re: JNDI Lookup fails in JBoss AS 7 [java.naming.CommunicationException]"
To view the discussion, visit: http://community.jboss.org/message/638867#638867
--------------------------------------------------------------
Abiya,
I am not seeing your datasource loaded before the deployment of your servlet. Are you sure
that your datasource is loaded before your web app?
because, in my case its working for startup servlets too. Checkout my output. Here, the
datasource is loaded way back this web app is loaded.
18:15:52,229 INFO [org.jboss.web] (MSC service thread 1-2)
registering web context: /core
*18:15:52,560 INFO [stdout] (MSC service thread 1-15) Success getting DS : class
org.jboss.jca.adapters.jdbc.WrapperDataSource*
18:15:52,562 INFO [org.jboss.web] (MSC service thread 1-15) registering web context:
/test
18:15:52,584 INFO [org.jboss.as.server.controller] (DeploymentScanner-threads - 2)
Replaced deployment "test.ear" with deployment "test.ear"
And for your basic question, you can have it anywhere. Normally, I will not suggest you to
have DB activities in servlet, use MVC implemetation.
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4:48 a.m.
abiya [http://community.jboss.org/people/abiya] created the discussion
"Re: JNDI Lookup fails in JBoss AS 7 [java.naming.CommunicationException]"
To view the discussion, visit: http://community.jboss.org/message/640739#640739
--------------------------------------------------------------
Thanks for checking it at your end.
My datasource is well bound before the servlet invocation. It fails only on
load-on-startup servlets. Still checking for a solution.
Regards,
Abiya
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5:27 a.m.
jaikiran pai [http://community.jboss.org/people/jaikiran] created the discussion
"Re: JNDI Lookup fails in JBoss AS 7 [java.naming.CommunicationException]"
To view the discussion, visit: http://community.jboss.org/message/640748#640748
--------------------------------------------------------------
Instead of doing a lookup:
DataSource ds = (javax.sql.DataSource)
ctx.lookup("java:jboss/datasources/Test");
use injection:
@Resource (mappedName="java:jboss/datasources/Test")
private DataSource ds;
That'll setup the appropriate dependencies between the servlet and the datasource.
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12:58 a.m.
abiya [http://community.jboss.org/people/abiya] created the discussion
"Re: JNDI Lookup fails in JBoss AS 7 [java.naming.CommunicationException]"
To view the discussion, visit: http://community.jboss.org/message/640970#640970
--------------------------------------------------------------
Thanks for the reply Jaikiran. While using annotation I get the following exception during
deployment,
Servlet /common threw load() exception: java.lang.IllegalArgumentException: Can not set
javax.sql.DataSource field com.metreo.common.web.servlet.StartupServlet.ds to
com.metreo.common.web.servlet.StartupServlet
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(Unknown Source)
[:1.6.0_24]
at sun.reflect.UnsafeFieldAccessorImpl.throwSetIllegalArgumentException(Unknown Source)
[:1.6.0_24]
at sun.reflect.UnsafeFieldAccessorImpl.ensureObj(Unknown Source) [:1.6.0_24]
at sun.reflect.UnsafeObjectFieldAccessorImpl.set(Unknown Source) [:1.6.0_24]
at java.lang.reflect.Field.set(Unknown Source) [:1.6.0_24]
at
org.jboss.as.ee.component.ManagedReferenceFieldInjectionInterceptor.processInvocation(ManagedReferenceFieldInjectionInterceptor.java:64)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:287)
[jboss-invocation-1.1.0.Final.jar:1.1.0.Final]
at org.jboss.invocation.WeavedInterceptor.processInvocation(WeavedInterceptor.java:53)
[jboss-invocation-1.1.0.Final.jar:1.1.0.Final]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:287)
[jboss-invocation-1.1.0.Final.jar:1.1.0.Final]
at
org.jboss.as.ee.component.ManagedReferenceInterceptor.processInvocation(ManagedReferenceInterceptor.java:53)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:287)
[jboss-invocation-1.1.0.Final.jar:1.1.0.Final]
at org.jboss.invocation.WeavedInterceptor.processInvocation(WeavedInterceptor.java:53)
[jboss-invocation-1.1.0.Final.jar:1.1.0.Final]
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:287)
[jboss-invocation-1.1.0.Final.jar:1.1.0.Final]
at org.jboss.as.ee.component.TCCLInterceptor.processInvocation(TCCLInterceptor.java:45)
at org.jboss.invocation.InterceptorContext.proceed(InterceptorContext.java:287)
[jboss-invocation-1.1.0.Final.jar:1.1.0.Final]
at org.jboss.invocation.ChainedInterceptor.processInvocation(ChainedInterceptor.java:61)
[jboss-invocation-1.1.0.Final.jar:1.1.0.Final]
at
org.jboss.as.ee.component.BasicComponent.constructComponentInstance(BasicComponent.java:152)
at org.jboss.as.ee.component.BasicComponent.createInstance(BasicComponent.java:77)
at
org.jboss.as.web.deployment.component.WebComponentInstantiator$1.<init>(WebComponentInstantiator.java:57)
[jboss-as-web-7.0.2.Final.jar:7.0.2.Final]
at
org.jboss.as.web.deployment.component.WebComponentInstantiator.getReference(WebComponentInstantiator.java:55)
[jboss-as-web-7.0.2.Final.jar:7.0.2.Final]
at
org.jboss.as.web.deployment.WebInjectionContainer.instantiate(WebInjectionContainer.java:99)
[jboss-as-web-7.0.2.Final.jar:7.0.2.Final]
at
org.jboss.as.web.deployment.WebInjectionContainer.newInstance(WebInjectionContainer.java:78)
[jboss-as-web-7.0.2.Final.jar:7.0.2.Final]
at
org.jboss.as.web.deployment.WebInjectionContainer.newInstance(WebInjectionContainer.java:72)
[jboss-as-web-7.0.2.Final.jar:7.0.2.Final]
at org.apache.catalina.core.StandardWrapper.loadServlet(StandardWrapper.java:1156)
[jbossweb-7.0.1.Final.jar:7.0.2.Final]
at org.apache.catalina.core.StandardWrapper.load(StandardWrapper.java:1102)
[jbossweb-7.0.1.Final.jar:7.0.2.Final]
at org.apache.catalina.core.StandardContext.loadOnStartup(StandardContext.java:3631)
[jbossweb-7.0.1.Final.jar:7.0.2.Final]
at org.apache.catalina.core.StandardContext.start(StandardContext.java:3844)
[jbossweb-7.0.1.Final.jar:7.0.2.Final]
at org.jboss.as.web.deployment.WebDeploymentService.start(WebDeploymentService.java:70)
[jboss-as-web-7.0.2.Final.jar:7.0.2.Final]
at
org.jboss.msc.service.ServiceControllerImpl$StartTask.startService(ServiceControllerImpl.java:1824)
at
org.jboss.msc.service.ServiceControllerImpl$StartTask.run(ServiceControllerImpl.java:1759)
at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(Unknown Source) [:1.6.0_24]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source) [:1.6.0_24]
at java.lang.Thread.run(Unknown Source) [:1.6.0_24]
My servlet code is as follows,
***public
**
**class** StartupServlet **extends** HttpServlet{
*
@Resource(mappedName="java:jboss/datasources/weblogic.jdbc.jts.demopool")
**private** DataSource ds;
....
}
I am new to annotations and not sure what is wrong over here.
Thanks,
Abiya
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participants (3)
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Kousik Rajendran