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Posted to java-user@axis.apache.org by Martin Atkins <ma...@degeneration.co.uk> on 2006/03/29 18:32:07 UTC

Java2WSDL throws NullPointerException

I'm attempting to use Java2WSDL to create a WSDL file for a web service 
class that will eventually be deployed under Axis. However, Java2WSDL is 
just throwing a NullPointerException. I've tried tweaking the parameters 
to no avail. My command line is (summarized):

java -cp $AXIS_CLASSPATH
      org.apache.axis.wsdl.Java2WSDL
      -X classes/
      -o EntityBeanManagement.wsdl
      -l http://localhost:8080/DFTService/ManagerService
      -n "http://services.dft.mycompany.com"
      -p"com.mycompany.dft.beans"="http://beans.dfd.mycompany.com"
      -p"com.mycompany.dft.maps"="http://maps.dft.mycompany.com"
      com.mycompany.dft.services.ManagerService

I've tried various permutations with no -p, one -p no -n, etc. All 
generate this exception:

java.lang.NullPointerException
         at 
org.apache.axis.utils.ClassUtils.createClassLoader(ClassUtils.java:291)
         at org.apache.axis.wsdl.Java2WSDL.parseOption(Java2WSDL.java:491)
         at org.apache.axis.wsdl.Java2WSDL.run(Java2WSDL.java:564)
         at org.apache.axis.wsdl.Java2WSDL.main(Java2WSDL.java:682)

I'm using a binary distribution of Axis 1.3 downloaded from the official 
site.

What might be causing this?


Cheers,
-Martin

Re: Java2WSDL throws NullPointerException

Posted by Dies Koper <di...@jp.fujitsu.com>.
Hello Martin,

I'm glad to hear you found the cause of the error.
Please do not hesitate to open a JIRA bug with your suggestion and a patch.

Regards,
Dies


Martin Atkins wrote:
> Dies Koper wrote:
>> Hello Martin,
>>
>> Judging from your stacktrace the NPE occurs in the following line:
>>
>>         URL[] urls = new URL[names.length];
>>
>> "names" is an array of strings that should contain the path entries in 
>> your classpath. I do not know under what circumstances it could be 
>> null, but you could try tweaking your classpath setting (-X classes/). 
>> Maybe it's the slash?
>>
> 
> Your message prompted me to go for a little look through the source code 
> myself. It turns out that this error is caused by including a space 
> between the -X and the classpath value.
> 
> I'd like to politely suggest that either this create a more sensible 
> error (by checking if option.getArgument() is null at about line 491 of 
> Java2WSDL.java?) or ideally the tool support the space, for consistency 
> with most other utilities which have single-letter options.

Re: Java2WSDL throws NullPointerException

Posted by Martin Atkins <ma...@degeneration.co.uk>.
Dies Koper wrote:
> Hello Martin,
> 
> Judging from your stacktrace the NPE occurs in the following line:
> 
>         URL[] urls = new URL[names.length];
> 
> "names" is an array of strings that should contain the path entries in 
> your classpath. I do not know under what circumstances it could be null, 
> but you could try tweaking your classpath setting (-X classes/). Maybe 
> it's the slash?
> 

Your message prompted me to go for a little look through the source code 
myself. It turns out that this error is caused by including a space 
between the -X and the classpath value.

I'd like to politely suggest that either this create a more sensible 
error (by checking if option.getArgument() is null at about line 491 of 
Java2WSDL.java?) or ideally the tool support the space, for consistency 
with most other utilities which have single-letter options.

Re: Java2WSDL throws NullPointerException

Posted by Dies Koper <di...@jp.fujitsu.com>.
Hello Martin,

Judging from your stacktrace the NPE occurs in the following line:

         URL[] urls = new URL[names.length];

"names" is an array of strings that should contain the path entries in 
your classpath. I do not know under what circumstances it could be null, 
but you could try tweaking your classpath setting (-X classes/). Maybe 
it's the slash?

Good luck,
Dies

Martin Atkins wrote:
> 
> I'm attempting to use Java2WSDL to create a WSDL file for a web service 
> class that will eventually be deployed under Axis. However, Java2WSDL is 
> just throwing a NullPointerException. I've tried tweaking the parameters 
> to no avail. My command line is (summarized):
> 
> java -cp $AXIS_CLASSPATH
>      org.apache.axis.wsdl.Java2WSDL
>      -X classes/
>      -o EntityBeanManagement.wsdl
>      -l http://localhost:8080/DFTService/ManagerService
>      -n "http://services.dft.mycompany.com"
>      -p"com.mycompany.dft.beans"="http://beans.dfd.mycompany.com"
>      -p"com.mycompany.dft.maps"="http://maps.dft.mycompany.com"
>      com.mycompany.dft.services.ManagerService
> 
> I've tried various permutations with no -p, one -p no -n, etc. All 
> generate this exception:
> 
> java.lang.NullPointerException
>         at 
> org.apache.axis.utils.ClassUtils.createClassLoader(ClassUtils.java:291)
>         at org.apache.axis.wsdl.Java2WSDL.parseOption(Java2WSDL.java:491)
>         at org.apache.axis.wsdl.Java2WSDL.run(Java2WSDL.java:564)
>         at org.apache.axis.wsdl.Java2WSDL.main(Java2WSDL.java:682)
> 
> I'm using a binary distribution of Axis 1.3 downloaded from the official 
> site.
> 
> What might be causing this?
> 
> 
> Cheers,
> -Martin