Dear Axis/Devs/User,
Is there any sould around here that could have had a similar problem
deploying an axix/tomcat application that will use a JNI to access the
server application? As you can see, it seems that either nobody knows how to
do this, or is so stupid that nobody things I won't be able to figure it
out. But so far, I have not had luck or brain to figure it out :(
Any kind of help will be greatly appreciated,
-Luis R.
From: "Luis Rivera" <[EMAIL PROTECTED]>
Reply-To: axis-dev@ws.apache.org
To: axis-dev@ws.apache.org
Subject: Re: Where to put Amazon Stub classes
Date: Wed, 19 Jul 2006 14:26:30 -0700
Roberto, axis-users, axis devs,
Sorry for the cross posting, but we had not had much luck in the users's
list, so I am hoping an axis/dev will have a good advise. I am sure more
than one user has needed to use axis/tomcat and a JNI interface, so I am
sure this has been done.
Roberto, it was a false alarm. The problem is still there. Nice to see you
found the solutions to your, but mine is a little more complicated because
I need classes in the shared context and classes in the webapps context,
which cause serialization/desearialization problems when making calls among
classes between the two contexts.
I found the log that has the stdout, which was showing a couple of
exceptions, which I solved by placing the appropriate jar files in the
right place. However, the problem didn't go away, there is something in the
Tomcat servlet or axis (I don't know) that is handling an exception in the
server side, because I have a try {} catch () {} where the problem ocurrs
and I don't catch anything, but the exception is returned to the client.
Now not even an exception is thrown to the stdout or staderr files.
The problems comes when in the shared/classes files I access the parameters
that use the classes generated by the WSDL2java tool. Those classes are in
both
TOMCAT_HOME/shared/classes
and
TOMCAT_HOME/webapps/axis/WEB-INF/classes
I also dropped the axis jar files in
TOMCAT_HOME/shared/lib
TOMCAT_HOME/webapp/WEB-INF/lib
TOMCAT_HOME/webapp/axis/WEB-INF/lib
but I still have a problem. At this point it would be nice to at leasts see
the DEBUG output from Tomcat, but I am not sure how to do that or if it is
something related to axis. To make this more explicit, this example works:
class CRLStub
...
public void getCompay(CompanyHolder company, StringHolder result)
throws java.rmi.RemoteException
{
company.value = new soap.xsd.CompanyInfo();
company.value.setCompany("Something");
result.value = "ok";
}
Now, if I try to do the following, there is no error, but obviously, the
result is not the same
class CRLStub
...
public void getCompay(CompanyInfoHolder company, StringHolder result)
throws java.rmi.RemoteException
{
jnInSharedContext.getCompany(company, result);
}
class JNIcrlInSharedContext
...
public void getCompany(CompanyInfoHolder company, StringHolder result)
{
/// No problem as long as I don't access neither company or result
}
But if I do this, then I receive the
java.lang.reflect.InvocationTargetException at the client side, even if I
try to catch the exception with a try {} catch () {} pair.
public void getCompany(CompanyInfoHolder company, StringHolder result)
{
company.value = new soap.xsd.CompanyInfo();
}
As long as I do not referece the classes, which I believe means the classes
are not loaded, then there is not problem. When they are accessed, then it
fails. The classes are in both common, shared and webapps, where else I am
supposed to place them?
I would appreciate any kind of hint,
Thanks in advance,
--Luis R.
From: Roberto Belardo <[EMAIL PROTECTED]>
Reply-To: axis-user@ws.apache.org
To: axis-user@ws.apache.org
Subject: Re: Where to put Amazon Stub classes
Date: Wed, 19 Jul 2006 10:26:23 +0200
Hi Luis,
this is a beautiful morning. I don't know how but i solve everything. This
morning the first thing i did was another experiment to better understand
what was happening. So i rebuild Amazon stub classes with the axis tool:
java org.apache.axis.wsdl.WSDL2Java -v -W -p myamazonservice
http://webservices.amazon.com/AWSECommerceService/2006-06-07/AWSECommerceService.wsdl
Then i put a System.out.println("TEST") inside the code of
AWSECommerceServiceLocator.java constructor to see if Axis reach that
point. I never saw that string printed out, but after the deploy of
everything, and after including those stub classes in the same jar of my
web service putted in TOMCAT/webapps/AXIS/WEB-INF/lib directory,
everything works fine!
I really don't know how but i escape from this labyrinth!
I hope you find your way out from yours.
Thanks to all,
Roberto.
Ps: If anyone understand what's happened to me (why now everything works,
he can tell me whenever he wants)
Roberto Belardo ha scritto:
How do you find that the problem is that? I really don't know how to
advance from this InvocationTargetException...
Luis Rivera ha scritto:
Roberto,
I found my problem. It turned out not to be a Classloader problem, but a
NullPointer problem in the server, which I had not found because I don't
know how to debug my application in Tomcat and there is no single log in
the Tomcat directory that can give me a clue of what's happening.
Anyway, the configuration worked as I had it initially:
1) Stubs/Skeletons and all that had nothing to do with the JNI in
axis/WEB-INF/classes
2) The classes for the JNI interface/loading the jni library under
shared/classes
I think if we can find a way to debug our application in the server, we
could get better light on what is happening and solve problems a lot
quicker :|.
Anybody knows how to debug remotely axis/tomcat apps?
--Luis R.
From: "Luis Rivera" <[EMAIL PROTECTED]>
Reply-To: axis-user@ws.apache.org
To: axis-user@ws.apache.org
Subject: Re: Where to put Amazon Stub classes
Date: Tue, 18 Jul 2006 04:18:43 -0700
Roberto,
I have not solved the problem, but managed to understand that the
problem does is not where I drop the classes that will make the JNi
calls. Dropping them inthe share directory results in the
java.lang.reflect.InvocationTargetException at the Client side.
1) To be clear, the call to th e JNi wrapper (dropped in the
share/classes directoy) is something like this:
public void getCompany(CompanyHolder company, StringHolder result)
{...}
Making this call from the Stub implementation (dropped in
axis/WEB-INF/classes directory) result in the mentioned exception. The
clases ComapnyHolder is visible to both classes, and tthey are in
axis/WEB-INF/classes and axis/WEB-INF/classes.
2) For the sake of testing, I created a new method without parameters
public Stirng getCompany();
and made the call just like in 1, and IT WORKED ... not Exception at
the client side.
3) So, the problem seems to me is not wher eI drop the implementation
classes, but the classes with all the types and hodlers generated with
wsdl2Java, and it doesn't seem to be the shared/classes directory,
because that classloader finds it correctly.
It seems that there is another classloader in the middle, between the
one for shared and the one for my WebApp that needs to know where to
get these classes from, but where? ... I tried common and server.... no
luck !!!
HELP PLEASE !!!
Thanks in advance,
--Luis R.
From: Roberto Belardo <[EMAIL PROTECTED]>
Reply-To: axis-user@ws.apache.org
To: axis-user@ws.apache.org
Subject: Re: Where to put Amazon Stub classes
Date: Tue, 18 Jul 2006 10:36:40 +0200
Those are all the experiments i did to solve this damned problem:
* Put the Amazon stub classes in a jar in the classpath of windows:
The source code of the web service will compile, and you will be
able to correctly deploy it. But when you will try to acces it
from a client, the first try to call AWSserviceLocator( ) will
cause the exception.
* Put the Amazon stub classes in a jar in the
TOMCAT/webapps/AXIS/WEB-INF/lib directory: Axis will not start.
You will get a 404 error, and i don't know why.
* Put the Amazon stub classes in the
TOMCAT/webapps/AXIS/WEB-INF/classes directory: Nothing change from
the first point.
* Put the Amazon stub classes in the TOMCAT/shared/lib directory: :
Nothing change from the first point.
* Put the Amazon stub classes in the same jar of the web service i
try to deploy and use: I put this jar containing Amazon stub
package, my ws sources, my ws stub classes in
TOMCAT/webapps/AXIS/WEB-INF/lib directory. I can deploy it but
nothing change from the first point.
I really finish my ideas to solve this problem. Is it possible that no
one had never try to use Amazon in Axis? I wrote on Amazon forum,
Nabble Axis forum, Java forum but with no succes.
I hope we find the solution :-(
Roberto.
Luis Rivera ha scritto:
Roberto,
I don't know the answer, but I am having the same problem. Same
exception but with a slightly different setup. I have a class which
will use a JNI library, which according to the documentation should
be place in the shared/classes directory. So I did and I get the
dreaded java.lang.reflect.InvocationTargetException, which I believe
is a class loader problem. However, I have tried to solve this
placing it in the common/classes, server/classes and I get the same
result.
I have searched the web for solutions, some people say that it is a
classpath problem, but nobody seems to let you know where exactly you
set this so that the correct class loader finds the class (assuming I
am right and it is a classloader problem).
Any of these AXIS gurus have had a similar setup/problem and have a
solution at hand?
Thanks in advance,
--Luis R.
From: Roberto Belardo <[EMAIL PROTECTED]>
Reply-To: axis-user@ws.apache.org
To: axis-user@ws.apache.org
Subject: Re: Where to put Amazon Stub classes
Date: Mon, 17 Jul 2006 14:58:15 +0200
But if i put those stub files in a jar under the WEB-INF/lib Axis
cannot start.
My question begin: Can i invoke a web service on axis that will
invoke with some stubs the service of amazon? If yes, why i'm still
getting this exception?
Martin Gainty ha scritto:
Buon Giorno Roberto-
place jars in %TOMCAT_HOME%/webapps/axis/WEB-INF/lib
OR
place class files in %TOMCAT_HOME%/webapps/axis/WEB-INF/classes
Molte Grazie,
Martin --
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----- Original Message ----- From: "Roberto Belardo"
<[EMAIL PROTECTED]>
To: <axis-user@ws.apache.org>
Sent: Monday, July 17, 2006 6:07 AM
Subject: Where to put Amazon Stub classes
Hi all,
i have big problem. I'm trying to develop a web service that will
do simply
a search using amazon ws, and i want acces my service from a java
client. So
i put my web service jar in AXIS-HOME/WEB-INF/lib directory. But
here come
the problems:
Where i have to put Amazon stub classes obtained from the amazon
wsdl file?
In order to compile my java files for my web service, i create a
jar with
those stub files and putted it in the windows classpath. But it
seems to me
that Axis cannot see them because every time i try to acces the
web service
i got a java.lang.reflect.InvocationTargetException from Axis but
i can use
ut if i simply remove the amazon code. If i put that jar with the
amazon
stub in the AXIS-HOME/WEB-INF/lib directory Axis cannot start.I
get an error
404.
Thanks in advance,
Roberto --
View this message in context:
http://www.nabble.com/Where-to-put-Amazon-Stub-classes-tf1953881.html#a5358366
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