I've recently upgraded some of our tomcats from 7.0.47 to 7.0.50.
After upgrading I got lots of the below errors recorded in catalina.out
The errors are not logged if I disable tldValidation (either by settings
tldValidation=false in context.xml or removing the CATALINA_OPTS property:
org.apache.catalina.STRICT_SERVLET_COMPLIANCE=true .
The errors occur in a number of applications, here is the beginning of one of
the TLD files that seems to cause this issue:<?xml version="1.0"
encoding="UTF-8" ?>
<taglib xmlns="http://java.sun.com/xml/ns/j2ee";
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance";
xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee web-jsptaglibrary_2_0.xsd"
version="2.0">
Does anyone know:- Why this occurs only since 7.0.50- Where the root issue is
likely to be / how to fix it- Are there any significant downsides to turning
off tldValidation- The errors don't appear to have stopped things working, can
they be safely ignored
Any advice / help would be greatly appreciated.
Thanks,Paul
WARNING: Parse Warning Error at line 6 column 19: schema_reference.4: Failed to
read schema document 'web-jsptaglibrary_2_0.xsd', because 1) could not find the
document; 2) the document could not be read; 3) the root element of the
document is not <xsd:schema>.org.xml.sax.SAXParseException; lineNumber: 6;
columnNumber: 19; schema_reference.4: Failed to read schema document
'web-jsptaglibrary_2_0.xsd', because 1) could not find the document; 2) the
document could not be read; 3) the root element of the document is not
<xsd:schema>. at
com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:198)
at
com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.warning(ErrorHandlerWrapper.java:99)
at
com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:433)
at
com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:368)
at
com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:325)
at
com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.findSchemaGrammar(XMLSchemaValidator.java:2457)
at
com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(XMLSchemaValidator.java:1772)
at
com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.startElement(XMLSchemaValidator.java:746)
at
com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:378)
at
com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl$NSContentDriver.scanRootElementHook(XMLNSDocumentScannerImpl.java:604)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:3122)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:880)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:606)
at
com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:117)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:848)
at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777)
at
com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)
at
com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:649)
at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1561)
at org.apache.catalina.startup.TldConfig.tldScanStream(TldConfig.java:537)
at org.apache.catalina.startup.TldConfig.tldScanJar(TldConfig.java:492)
at org.apache.catalina.startup.TldConfig.access$100(TldConfig.java:61)
at
org.apache.catalina.startup.TldConfig$TldJarScannerCallback.scan(TldConfig.java:293)
at
org.apache.tomcat.util.scan.StandardJarScanner.process(StandardJarScanner.java:259)
at
org.apache.tomcat.util.scan.StandardJarScanner.scan(StandardJarScanner.java:178)
at org.apache.catalina.startup.TldConfig.execute(TldConfig.java:266)
at org.apache.catalina.startup.TldConfig.lifecycleEvent(TldConfig.java:562)
at
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at
org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at
org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5343)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
at
org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:634)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1230)
at
org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1876)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262) at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
Jan 20, 2014 7:15:29 AM org.apache.tomcat.util.digester.Digester errorSEVERE:
Parse Error at line 6 column 19: cvc-elt.1: Cannot find the declaration of
element 'taglib'.org.xml.sax.SAXParseException; lineNumber: 6; columnNumber:
19; cvc-elt.1: Cannot find the declaration of element 'taglib'. at
com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:198)
at
com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.error(ErrorHandlerWrapper.java:134)
at
com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:437)
at
com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:368)
at
com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:325)
at
com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(XMLSchemaValidator.java:1906)
at
com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.startElement(XMLSchemaValidator.java:746)
at
com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:378)
at
com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl$NSContentDriver.scanRootElementHook(XMLNSDocumentScannerImpl.java:604)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:3122)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:880)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:606)
at
com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:117)
at
com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:510)
at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:848)
at
com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:777)
at
com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
at
com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)
at
com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:649)
at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1561)
at org.apache.catalina.startup.TldConfig.tldScanStream(TldConfig.java:537)
at org.apache.catalina.startup.TldConfig.tldScanJar(TldConfig.java:492)
at org.apache.catalina.startup.TldConfig.access$100(TldConfig.java:61)
at
org.apache.catalina.startup.TldConfig$TldJarScannerCallback.scan(TldConfig.java:293)
at
org.apache.tomcat.util.scan.StandardJarScanner.process(StandardJarScanner.java:259)
at
org.apache.tomcat.util.scan.StandardJarScanner.scan(StandardJarScanner.java:178)
at org.apache.catalina.startup.TldConfig.execute(TldConfig.java:266)
at org.apache.catalina.startup.TldConfig.lifecycleEvent(TldConfig.java:562)
at
org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:119)
at
org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
at
org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5343)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150)
at
org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:901)
at
org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:877)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:634)
at org.apache.catalina.startup.HostConfig.deployDirectory(HostConfig.java:1230)
at
org.apache.catalina.startup.HostConfig$DeployDirectory.run(HostConfig.java:1876)
at
java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:471)
at java.util.concurrent.FutureTask.run(FutureTask.java:262) at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1145)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:615)
at java.lang.Thread.run(Thread.java:744)
...
Jan 20, 2014 7:15:30 AM org.apache.tomcat.util.descriptor.XmlErrorHandler
logFindingsWARNING: Warning [schema_reference.4: Failed to read schema document
'web-jsptaglibrary_2_0.xsd', because 1) could not find the document; 2) the
document could not be read; 3) the root element of the document is not
<xsd:schema>.] reported processing
[jar:file:/tomcat/webapps/psi-probe/WEB-INF/lib/standard-1.1.0.jar!/META-INF/x.tld].Jan
20, 2014 7:15:30 AM org.apache.tomcat.util.descriptor.XmlErrorHandler
logFindings
