Re: [lyo-dev] OSLC consumer : Exception in thread "main" java.lang.NoCla

[mohamed mosaad <m.mosaad1991@xxxxxxxxx>]

I had a similar problem. 

Try changing the library that has the Base64 class used for decoding from org.apache.commons. to another one. I used  com.sun.jersey.core.util.Base64.

Regards,

Mohamed Mosaad

2013/4/17 Alessio Bucaioni <alessiounivaq@xxxxxxxxx>

Dear all,

i was trying to implement a OSLC consumer which needs to consume resources from a private URI, thus only accessible with the proper credentials.

The basic main i have implemented looks like that:

final String MEDIA_TYPE = OslcMediaType.APPLICATION_RDF_XML;

final int timeout = 50000;

final  String queryBase =  "myQueryBase";

final  Set<Class<?>> providers = new HashSet<Class<?>>();

providers.addAll(JenaProvidersRegistry.getProviders());

providers.addAll(Json4JProvidersRegistry.getProviders());

   

BasicAuthSecurityHandler basicAuthHandler = new BasicAuthSecurityHandler();

basicAuthHandler.setUserName("username");

basicAuthHandler.setPassword("pwd");

final OslcRestClient oslcRestClient = new OslcRestClient(providers,queryBase, MEDIA_TYPE, timeout, basicAuthHandler);

final RequirementResource[] mbatSystemDefinitions = oslcRestClient.getOslcResources (RequirementResource[].class);

final String id = "1";

final String resourceBase = queryBase + "/" + id;

final OslcRestClient oslcRestClient1 = new OslcRestClient(providers,queryBase, MEDIA_TYPE, timeout, basicAuthHandler);

final RequirementResource mbatSystemDefinition = oslcRestClient1.getOslcResource (RequirementResource.class);

System.out.println("Rhasody System Definition: " + mbatSystemDefinition.getAbout());

System.out.println("ID:    " + mbatSystemDefinition.getIdentifier());

System.out.println("Title: " + mbatSystemDefinition.getTitle());

System.out.println("File:  " + mbatSystemDefinition.getSystemDefinitionFile());

System.out.println("== ******************************************************* =="); 

When i try to execute it i get this exception

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/codec/binary/Base64

at org.apache.wink.client.handlers.AbstractAuthSecurityHandler.getEncodedString(AbstractAuthSecurityHandler.java:75)

at org.apache.wink.client.handlers.BasicAuthSecurityHandler.handle(BasicAuthSecurityHandler.java:78)

at org.apache.wink.client.internal.handlers.HandlerContextImpl.doChain(HandlerContextImpl.java:52)

at org.apache.wink.client.internal.ResourceImpl.invoke(ResourceImpl.java:227)

at org.apache.wink.client.internal.ResourceImpl.invoke(ResourceImpl.java:189)

at org.apache.wink.client.internal.ResourceImpl.invokeNoException(ResourceImpl.java:181)

at org.apache.wink.client.internal.ResourceImpl.get(ResourceImpl.java:310)

at org.eclipse.lyo.oslc4j.client.OslcRestClient.getOslcResources(OslcRestClient.java:231)

at oslc.mbat.consumer.DummyMain.main(DummyMain.java:52)

Caused by: java.lang.ClassNotFoundException: org.apache.commons.codec.binary.Base64

at java.net.URLClassLoader$1.run(URLClassLoader.java:202)

at java.security.AccessController.doPrivileged(Native Method)

at java.net.URLClassLoader.findClass(URLClassLoader.java:190)

at java.lang.ClassLoader.loadClass(ClassLoader.java:306)

at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)

at java.lang.ClassLoader.loadClass(ClassLoader.java:247)

... 9 more

Do you have any suggestion?

Best,

Alessio.

--

Alessio Bucaioni,

Research Engineering @Mälardalen University (Västerås, SE)

Swedish mobile:  +46725298579

Italian mobile:  +393497925734

Email:  alessiounivaq@xxxxxxxxx

Linkedin:  http://www.linkedin.com/pub/alessio-bucaioni/27/5b2/b18

Address: via Pier Michele Vizioli 5

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              67100, AQ, Italy

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