[rules-users] Getting java.lang.NoSuchMethodError: org.drools.util.CompositeClassLoader.clone()Lorg/drools/util/CompositeClassLoader in drools webservice

[pratibhapandey]

Hello Team,
I am creating a web service in java using eclipse and axis2 which has some
drools functionality in it.

This is my drools class:
public class LeverageDrools {
	
	public LeverageDrools(){
		
	}
	
	public List<List&lt;String>> findCorpLeverageName(List<LeverageBSLAData>
lvgBsladataList) throws Exception{
		KnowledgeBase kbase = readKnowledgeBase();
		
		StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
		KnowledgeRuntimeLogger logger =
KnowledgeRuntimeLoggerFactory.newFileLogger(ksession, "test");
		List<List&lt;String>> corpLevList = new ArrayList<List&lt;String>>();
		for(int i=0; i<lvgBsladataList.size();i++){
			LeverageBSLAData lvgBsladata = lvgBsladataList.get(i);
			lvgBsladata.setCorpLeverageName(&quot;&quot;);
			ksession.insert(lvgBsladata);
			ksession.fireAllRules();
			List&lt;String> bslaList = new ArrayList<String>();
			bslaList.add(lvgBsladata.getInvestmentNumber());
			bslaList.add(lvgBsladata.getCorpLeverageName());
			corpLevList.add(bslaList);
		}
		logger.close();
		
		
		return corpLevList;
	}
	
	
	private static KnowledgeBase readKnowledgeBase() throws Exception {
	   KnowledgeBuilder kbuilder =
KnowledgeBuilderFactory.newKnowledgeBuilder();
       DecisionTableConfiguration config =
KnowledgeBuilderFactory.newDecisionTableConfiguration();
       config.setInputType(DecisionTableInputType.XLS);
	  
//kbuilder.add(ResourceFactory.newClassPathResource("com/ge/re/leverage/drools/resources/LeverageTagging.drl"),
ResourceType.DRL);
      
kbuilder.add(ResourceFactory.newClassPathResource("com/LeverageRuleSheet.xls"),
ResourceType.DTABLE, config);
       KnowledgeBuilderErrors errors = kbuilder.getErrors();
       if (errors.size() > 0) {
            for (KnowledgeBuilderError error: errors) {
                System.err.println(error);
            }
            throw new IllegalArgumentException("Could not parse
knowledge.");
        }
        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
        kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
        return kbase;
	}


}

and this is my POM:

	<dependency>
			<groupId>org.antlr</groupId>
			<artifactId>antlr-runtime</artifactId>
			<version>3.3</version>
			<scope>provided</scope>

		</dependency>
		<dependency>
			<groupId>org.drools</groupId>
			<artifactId>knowledge-api</artifactId>
			<version>5.4.0.Final</version>
			
		</dependency>
	
		<dependency>
			<groupId>org.drools</groupId>
			<artifactId>drools-core</artifactId>
			<version>5.4.0.Final</version>
			
		</dependency>
		<dependency>
			<groupId>org.drools</groupId>
			<artifactId>drools-compiler</artifactId>
			<version>5.4.0.Final</version>
			

		</dependency>
		<dependency>
			<groupId>org.drools</groupId>
			<artifactId>drools-jsr94</artifactId>
			<version>5.4.0.Final</version>
		</dependency>

		
		<dependency>
			<groupId>org.mvel</groupId>
			<artifactId>mvel2</artifactId>
			<version>2.1.0.drools16</version>
			

		</dependency>

		<dependency>
			<groupId>javax.rules</groupId>
			<artifactId>jsr94</artifactId>
			<version>1.4.2</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>com.thoughtworks.xstream</groupId>
			<artifactId>xstream</artifactId>
			<version>1.3.1</version>
			
		</dependency>

		<dependency>
			<groupId>net.sourceforge.jexcelapi</groupId>
			<artifactId>jxl</artifactId>
			<version>2.6.10</version>
		
		</dependency>


The build is fine and service also deploys well. but when I try to access
the service from a client, I get the following error on:

20:30:33,105 INFO  [STDOUT] [ERROR]
org.drools.util.CompositeClassLoader.clone()Lorg/drools/util/CompositeClassLoader;
java.lang.NoSuchMethodError:
org.drools.util.CompositeClassLoader.clone()Lorg/drools/util/CompositeClassLoader;
	at
org.drools.compiler.PackageBuilderConfiguration.getClassLoader(PackageBuilderConfiguration.java:358)
	at
org.drools.rule.builder.dialect.java.JavaDialectConfiguration.setCompiler(JavaDialectConfiguration.java:94)
	at
org.drools.rule.builder.dialect.java.JavaDialectConfiguration.init(JavaDialectConfiguration.java:57)
	at
org.drools.compiler.PackageBuilderConfiguration.addDialect(PackageBuilderConfiguration.java:309)
	at
org.drools.compiler.PackageBuilderConfiguration.buildDialectConfigurationMap(PackageBuilderConfiguration.java:298)
	at
org.drools.compiler.PackageBuilderConfiguration.init(PackageBuilderConfiguration.java:187)
	at
org.drools.compiler.PackageBuilderConfiguration.<init>(PackageBuilderConfiguration.java:165)
	at org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:301)
	at org.drools.compiler.PackageBuilder.<init>(PackageBuilder.java:229)
	at
org.drools.builder.impl.KnowledgeBuilderFactoryServiceImpl.newKnowledgeBuilder(KnowledgeBuilderFactoryServiceImpl.java:34)
	at
org.drools.builder.KnowledgeBuilderFactory.newKnowledgeBuilder(KnowledgeBuilderFactory.java:47)



the error is coming on  KnowledgeBuilder kbuilder =
KnowledgeBuilderFactory.newKnowledgeBuilder(); this line..

Please help as this is an urgent issue.



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