wsdl2java exception - log4j

Question

java org.apache.axis2.wsdl.WSDL2Java -s -p studs.exchange -uri https://api.betfair.com/exchange/v5/BFExchangeService.wsdl
Retrieving document at 'https://api.betfair.com/exchange/v5/BFExchangeService.wsdl'.
log4j:WARN No appenders could be found for logger (org.apache.axis2.description.WSDL11ToAllAxisServicesBuilder).
log4j:WARN Please initialize the log4j system properly.
Exception in thread "main" org.apache.axis2.wsdl.codegen.CodeGenerationException: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at org.apache.axis2.wsdl.codegen.CodeGenerationEngine.generate(CodeGenerationEngine.java:271)
at org.apache.axis2.wsdl.WSDL2Code.main(WSDL2Code.java:35)
at org.apache.axis2.wsdl.WSDL2Java.main(WSDL2Java.java:24)
Caused by: java.lang.RuntimeException: java.lang.reflect.InvocationTargetException
at org.apache.axis2.wsdl.codegen.extension.SimpleDBExtension.engage(SimpleDBExtension.java:53)
at org.apache.axis2.wsdl.codegen.CodeGenerationEngine.generate(CodeGenerationEngine.java:224)
... 2 more
Caused by: java.lang.reflect.InvocationTargetException
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:597)
at org.apache.axis2.wsdl.codegen.extension.SimpleDBExtension.engage(SimpleDBExtension.java:50)
... 3 more
Caused by: java.lang.NoSuchMethodError: org.apache.ws.commons.schema.XmlSchema.getTypeByName(Ljava/lang/String;)Lorg/apache/ws/commons/schema/XmlSchemaType;
at org.apache.axis2.schema.SchemaCompiler.isComponetExists(SchemaCompiler.java:2728)
at org.apache.axis2.schema.SchemaCompiler.getParentSchemaFromIncludes(SchemaCompiler.java:2670)
at org.apache.axis2.schema.SchemaCompiler.getParentSchemaFromIncludes(SchemaCompiler.java:2704)
at org.apache.axis2.schema.SchemaCompiler.getParentSchema(SchemaCompiler.java:2644)
at org.apache.axis2.schema.SchemaCompiler.processElement(SchemaCompiler.java:758)
at org.apache.axis2.schema.SchemaCompiler.processElement(SchemaCompiler.java:552)
at org.apache.axis2.schema.SchemaCompiler.process(SchemaCompiler.java:1991)
at org.apache.axis2.schema.SchemaCompiler.processParticle(SchemaCompiler.java:1874)
at org.apache.axis2.schema.SchemaCompiler.processComplexType(SchemaCompiler.java:1081)
at org.apache.axis2.schema.SchemaCompiler.processAnonymousComplexSchemaType(SchemaCompiler.java:980)
at org.apache.axis2.schema.SchemaCompiler.processSchema(SchemaCompiler.java:934)
at org.apache.axis2.schema.SchemaCompiler.processElement(SchemaCompiler.java:592)
at org.apache.axis2.schema.SchemaCompiler.processElement(SchemaCompiler.java:563)
at org.apache.axis2.schema.SchemaCompiler.compile(SchemaCompiler.java:370)
at org.apache.axis2.schema.SchemaCompiler.compile(SchemaCompiler.java:280)
at org.apache.axis2.schema.ExtensionUtility.invoke(ExtensionUtility.java:103)
... 8 more
whats is happening here? what about log4j

Answer 1

Don't worry about the Log4j stuff for the moment. That's simply telling you that the Log4j framework can't find its configuration. It'll run ok without it.
The important line is
Caused by: java.lang.NoSuchMethodError: org.apache.ws.commons.schema.XmlSchema.getTypeByName(Ljava/lang/String;)Lorg/apache/ws/commons/schema/XmlSchemaType;
which says to me that you have some library mismatch. You have some library in your classpath that doesn't match Axis' requirements (most probably an old version of the library). Check Axis' dependencies versus what you're running with (your JVM version and the libraries on your classpath).