xml - Tomcat - SAXParseException - Content is not allowed in prolog - Issue only with Debian Docker images

Question

I get SAXParseException when using bitnami/tomcat:7 (debian) docker image but it works fine when using docker.io/hobsonspipe/centos-tomcat7 image. I even tested using the same java jdk1.8.0_131

I also tested the xml's using xmllint and no errors.

<?xml version="1.0" encoding="utf-8"?>

What could be the difference between the images? I don't see any hidden characters in the first line as it reports in the log.

Jan 04, 2021 5:56:20 AM org.apache.tomcat.util.digester.Digester fatalError
SEVERE: Parse Fatal Error at line 1 column 1: Content is not allowed in prolog.
org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 1; Content is not allowed in prolog.
        at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:203)
        at com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.fatalError(ErrorHandlerWrapper.java:177)
        at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:400)
        at com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:327)
        at com.sun.org.apache.xerces.internal.impl.XMLScanner.reportFatalError(XMLScanner.java:1472)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:994)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:602)
        at com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:112)
        at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:505)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:841)
        at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:770)
        at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
        at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1213)
        at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(SAXParserImpl.java:643)
        at org.apache.tomcat.util.digester.Digester.parse(Digester.java:1576)
        at org.apache.catalina.startup.TldConfig.tldScanStream(TldConfig.java:565)
        at org.apache.catalina.startup.TldConfig.tldScanWebXml(TldConfig.java:357)
        at org.apache.catalina.startup.TldConfig.execute(TldConfig.java:262)
        at org.apache.catalina.startup.TldConfig.lifecycleEvent(TldConfig.java:590)
        at org.apache.catalina.util.LifecycleSupport.fireLifecycleEvent(LifecycleSupport.java:117)
        at org.apache.catalina.util.LifecycleBase.fireLifecycleEvent(LifecycleBase.java:90)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5566)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:145)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1702)
        at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1692)
        at java.util.concurrent.FutureTask.run(FutureTask.java:266)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
        at java.lang.Thread.run(Thread.java:748)

question from:https://stackoverflow.com/questions/65558289/tomcat-saxparseexception-content-is-not-allowed-in-prolog-issue-only-with

Answer 1

Waitting for answers