I used wstool.bat as described in the user guide of JBoss WS:

wstools -cp E:\tests\java_class -config E:\tests\java_src\jbossws\config.xml

This leads to:

Exception in thread "main" org.jboss.xb.binding.JBossXBRuntimeException: Failed
to create a new SAX parser
at org.jboss.xb.binding.UnmarshallerFactory$UnmarshallerFactoryImpl.newUnmarshaller(UnmarshallerFactory.java:100)
at org.jboss.ws.tools.config.ToolsSchemaConfigReader.readConfig(ToolsSchemaConfigReader.java:131)
at org.jboss.ws.tools.WSTools.readToolsConfiguration(WSTools.java:139)
at org.jboss.ws.tools.WSTools.generate(WSTools.java:79)
at org.jboss.ws.tools.WSTools.main(WSTools.java:61)
Caused by: org.jboss.xb.binding.JBossXBException: Failed to create a new SAX parser
at org.jboss.xb.binding.parser.sax.SaxJBossXBParser.<init>(SaxJBossXBParser.java:69)
at org.jboss.xb.binding.UnmarshallerImpl.<init>(UnmarshallerImpl.java:57)
at org.jboss.xb.binding.UnmarshallerFactory$UnmarshallerFactoryImpl.newUnmarshaller(UnmarshallerFactory.java:96)
... 4 more
Caused by: java.lang.NullPointerException
at sun.misc.URLClassPath$3.run(URLClassPath.java:316)
at java.security.AccessController.doPrivileged(Native Method)
at sun.misc.URLClassPath.getLoader(URLClassPath.java:313)
at sun.misc.URLClassPath.getLoader(URLClassPath.java:290)
at sun.misc.URLClassPath.findResource(URLClassPath.java:141)
at java.net.URLClassLoader$2.run(URLClassLoader.java:362)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findResource(URLClassLoader.java:359)
at java.lang.ClassLoader.getResource(ClassLoader.java:977)
at java.lang.ClassLoader.getResourceAsStream(ClassLoader.java:1159)
at org.apache.xerces.parsers.SecuritySupport$6.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at org.apache.xerces.parsers.SecuritySupport.getResourceAsStream(Unknown Source)
at org.apache.xerces.parsers.ObjectFactory.findJarServiceProvider(Unknown Source)
at org.apache.xerces.parsers.ObjectFactory.createObject(Unknown Source)
at org.apache.xerces.parsers.ObjectFactory.createObject(Unknown Source)
at org.apache.xerces.parsers.SAXParser.<init>(Unknown Source)
at org.apache.xerces.parsers.SAXParser.<init>(Unknown Source)
at org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.<init>(Unknown Source)
at org.apache.xerces.jaxp.SAXParserImpl.<init>(Unknown Source)
at org.apache.xerces.jaxp.SAXParserFactoryImpl.newSAXParser(Unknown Source)
at org.jboss.xb.binding.parser.sax.SaxJBossXBParser.<init>(SaxJBossXBParser.java:65)
... 6 more

If I remove the -cp parameter and call "set WSTOOLS_CLASSPATH=E:\tests\java_class", it seems to work. At least I get a webservices.xml, jaxrpc-mapping.xml and a WSDL.