[jdom-interest] JDOM8,XERCES2.3,TOMCAT4.0 Schema Validation - Class Cast Exceptio n Unkown Source Error

[Bajaj, Shailesh]

Hi All,

I wanted to do schema validation. My XML document would be in the form of an
String.
It works fine when I wun standalone but fails on tomcat. 
I am getting Class Cast Exception 
Caused by: java.lang.ClassCastException
        at org.apache.xerces.impl.xs.XMLSchemaValidator.reset(Unknown
Source)
        at org.apache.xerces.parsers.BasicParserConfiguration.reset(Unknown
Source)
        at org.apache.xerces.parsers.DTDConfiguration.reset(Unknown Source)
        at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
        at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
        at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
        at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
        at org.jdom.input.SAXBuilder.build(SAXBuilder.java:354)
        at org.jdom.input.SAXBuilder.build(SAXBuilder.java:740)
        at
com.wpp_ai.biz.bizsvc.SchemaValidator.entitySchemaValidate(SchemaValidator.j
ava:138)

Has anybody come across something like this earlier. TIA



My code looks like this.
         SAXBuilder builder = null; 
        Document document;
        builder = new SAXBuilder("org.apache.xerces.parsers.SAXParser");
        File f = new File(ServletBean.getFileRealPath(strEntityFile));
        StringReader sr = new StringReader(xmlData);
	  BestSAXChecker oerrorhandler = new BestSAXChecker();
        builder.setProperty(
 
"http://apache.org/xml/properties/schema/external-noNamespaceSchemaLocation"
,
        f.toURI());
        
        builder.setValidation(true);
        builder.setErrorHandler(oerrorhandler);
        // turn on schema support
        builder.setFeature(
        "http://apache.org/xml/features/validation/schema",
        true);
        builder.setFeature(
        "http://apache.org/xml/features/validation/schema-full-checking",
        true);
        try {

        document = builder.build(sr); }
Class BestSAXChecker implements ErrorHandler and the three methods.
It fails on the line builder.build(sr)

The error trace is somthing like this

Starting service Tomcat-Standalone
Apache Tomcat/4.0
org.jdom.JDOMException: Error in building
        at org.jdom.input.SAXBuilder.build(SAXBuilder.java:373)
        at org.jdom.input.SAXBuilder.build(SAXBuilder.java:740)
        at
com.wpp_ai.biz.bizsvc.SchemaValidator.entitySchemaValidate(SchemaVali
dator.java:138)
        at
com.wpp_ai.biz.bizsvc.SchemaValidator.validateAgainstSchema(SchemaVal
idator.java:53)
        at
com.wpp_ai.infra.axissvc.AIConfigurationServlet.testschemavalida(AICo
nfigurationServlet.java:88)
        at
com.wpp_ai.infra.axissvc.AIConfigurationServlet.init(AIConfigurationS
ervlet.java:44)
        at javax.servlet.GenericServlet.init(GenericServlet.java:258)
        at org.apache.catalina.core.StandardWrapper.load(Unknown Source)
        at org.apache.catalina.core.StandardContext.loadOnStartup(Unknown
Source
)
        at org.apache.catalina.core.StandardContext.start(Unknown Source)
        at org.apache.catalina.core.ContainerBase.addChild(Unknown Source)
        at org.apache.catalina.core.StandardHost.addChild(Unknown Source)
        at org.apache.catalina.core.StandardHost.install(Unknown Source)
        at org.apache.catalina.startup.HostConfig.deployApps(Unknown Source)
        at org.apache.catalina.startup.HostConfig.start(Unknown Source)
        at org.apache.catalina.startup.HostConfig.lifecycleEvent(Unknown
Source)

        at
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(Unknown
Source)
        at org.apache.catalina.core.ContainerBase.start(Unknown Source)
        at org.apache.catalina.core.ContainerBase.start(Unknown Source)
        at org.apache.catalina.core.StandardEngine.start(Unknown Source)
        at org.apache.catalina.core.StandardService.start(Unknown Source)
        at org.apache.catalina.core.StandardServer.start(Unknown Source)
        at org.apache.catalina.startup.Catalina.start(Unknown Source)
        at org.apache.catalina.startup.Catalina.execute(Unknown Source)
        at org.apache.catalina.startup.Catalina.process(Unknown Source)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at org.apache.catalina.startup.Bootstrap.main(Unknown Source)
Caused by: java.lang.ClassCastException
        at org.apache.xerces.impl.xs.XMLSchemaValidator.reset(Unknown
Source)
        at org.apache.xerces.parsers.BasicParserConfiguration.reset(Unknown
Sour
ce)
        at org.apache.xerces.parsers.DTDConfiguration.reset(Unknown Source)
        at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
        at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
        at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
        at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
        at org.jdom.input.SAXBuilder.build(SAXBuilder.java:354)
        ... 29 more
Caused by: java.lang.ClassCastException
        at org.apache.xerces.impl.xs.XMLSchemaValidator.reset(Unknown
Source)
        at org.apache.xerces.parsers.BasicParserConfiguration.reset(Unknown
Sour
ce)
        at org.apache.xerces.parsers.DTDConfiguration.reset(Unknown Source)
        at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
        at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
        at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
        at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
        at org.jdom.input.SAXBuilder.build(SAXBuilder.java:354)
        at org.jdom.input.SAXBuilder.build(SAXBuilder.java:740)
        at
com.wpp_ai.biz.bizsvc.SchemaValidator.entitySchemaValidate(SchemaVali
dator.java:138)
        at
com.wpp_ai.biz.bizsvc.SchemaValidator.validateAgainstSchema(SchemaVal
idator.java:53)
        at
com.wpp_ai.infra.axissvc.AIConfigurationServlet.testschemavalida(AICo
nfigurationServlet.java:88)
        at
com.wpp_ai.infra.axissvc.AIConfigurationServlet.init(AIConfigurationS
ervlet.java:44)
        at javax.servlet.GenericServlet.init(GenericServlet.java:258)
        at org.apache.catalina.core.StandardWrapper.load(Unknown Source)
        at org.apache.catalina.core.StandardContext.loadOnStartup(Unknown
Source
)
        at org.apache.catalina.core.StandardContext.start(Unknown Source)
        at org.apache.catalina.core.ContainerBase.addChild(Unknown Source)
        at org.apache.catalina.core.StandardHost.addChild(Unknown Source)
        at org.apache.catalina.core.StandardHost.install(Unknown Source)
        at org.apache.catalina.startup.HostConfig.deployApps(Unknown Source)
        at org.apache.catalina.startup.HostConfig.start(Unknown Source)
        at org.apache.catalina.startup.HostConfig.lifecycleEvent(Unknown
Source)

        at
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(Unknown
Source)
        at org.apache.catalina.core.ContainerBase.start(Unknown Source)
        at org.apache.catalina.core.ContainerBase.start(Unknown Source)
        at org.apache.catalina.core.StandardEngine.start(Unknown Source)
        at org.apache.catalina.core.StandardService.start(Unknown Source)
        at org.apache.catalina.core.StandardServer.start(Unknown Source)
        at org.apache.catalina.startup.Catalina.start(Unknown Source)
        at org.apache.catalina.startup.Catalina.execute(Unknown Source)
        at org.apache.catalina.startup.Catalina.process(Unknown Source)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at org.apache.catalina.startup.Bootstrap.main(Unknown Source)
Caused by: java.lang.ClassCastException
        at org.apache.xerces.impl.xs.XMLSchemaValidator.reset(Unknown
Source)
        at org.apache.xerces.parsers.BasicParserConfiguration.reset(Unknown
Sour
ce)
        at org.apache.xerces.parsers.DTDConfiguration.reset(Unknown Source)
        at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
        at org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
        at org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
        at org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
        at org.jdom.input.SAXBuilder.build(SAXBuilder.java:354)
        at org.jdom.input.SAXBuilder.build(SAXBuilder.java:740)
        at
com.wpp_ai.biz.bizsvc.SchemaValidator.entitySchemaValidate(SchemaVali
dator.java:138)
        at
com.wpp_ai.biz.bizsvc.SchemaValidator.validateAgainstSchema(SchemaVal
idator.java:53)
        at
com.wpp_ai.infra.axissvc.AIConfigurationServlet.testschemavalida(AICo
nfigurationServlet.java:88)
        at
com.wpp_ai.infra.axissvc.AIConfigurationServlet.init(AIConfigurationS
ervlet.java:44)
        at javax.servlet.GenericServlet.init(GenericServlet.java:258)
        at org.apache.catalina.core.StandardWrapper.load(Unknown Source)
        at org.apache.catalina.core.StandardContext.loadOnStartup(Unknown
Source
)
        at org.apache.catalina.core.StandardContext.start(Unknown Source)
        at org.apache.catalina.core.ContainerBase.addChild(Unknown Source)
        at org.apache.catalina.core.StandardHost.addChild(Unknown Source)
        at org.apache.catalina.core.StandardHost.install(Unknown Source)
        at org.apache.catalina.startup.HostConfig.deployApps(Unknown Source)
        at org.apache.catalina.startup.HostConfig.start(Unknown Source)
        at org.apache.catalina.startup.HostConfig.lifecycleEvent(Unknown
Source)

        at
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(Unknown
Source)
        at org.apache.catalina.core.ContainerBase.start(Unknown Source)
        at org.apache.catalina.core.ContainerBase.start(Unknown Source)
        at org.apache.catalina.core.StandardEngine.start(Unknown Source)
        at org.apache.catalina.core.StandardService.start(Unknown Source)
        at org.apache.catalina.core.StandardServer.start(Unknown Source)
        at org.apache.catalina.startup.Catalina.start(Unknown Source)
        at org.apache.catalina.startup.Catalina.execute(Unknown Source)
        at org.apache.catalina.startup.Catalina.process(Unknown Source)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.
java:39)
        at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAcces
sorImpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at org.apache.catalina.startup.Bootstrap.main(Unknown Source)
Starting service Tomcat-Apache
Apache Tomcat/4.0


With Regards ,

- Shailesh