Issue could be specific to the Karaf setup, i.e. activemq-osgi, so I'm
posting it here.
ActiveMQ (6.2.6 in this case) does not start if there is no Internet access.
2026-06-07T10:00:27,414 | WARN | =[org.apache.activemq.server]) |
XmlBeanDefinitionReader | k.util.xml.SimpleSaxErrorHandler 48 |
org.springframework.__version_6.2.17 - 0.0.0 | Ignored XML validation
warning
org.xml.sax.SAXParseException; lineNumber: 3; columnNumber: 100;
schema_reference.4: Failed to read schema document
'http://www.springframework.org/schema/beans/spring-beans.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
java.xml/com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.createSAXParseException(ErrorHandlerWrapper.java:204)
at
java.xml/com.sun.org.apache.xerces.internal.util.ErrorHandlerWrapper.warning(ErrorHandlerWrapper.java:100)
at
java.xml/com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:392)
at
java.xml/com.sun.org.apache.xerces.internal.impl.XMLErrorReporter.reportError(XMLErrorReporter.java:306)
at
java.xml/com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.reportSchemaErr(XSDHandler.java:4258)
at
java.xml/com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.reportSchemaWarning(XSDHandler.java:4249)
at
java.xml/com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.getSchemaDocument1(XSDHandler.java:2543)
at
java.xml/com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.getSchemaDocument(XSDHandler.java:2239)
at
java.xml/com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.parseSchema(XSDHandler.java:589)
at
java.xml/com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaLoader.loadSchema(XMLSchemaLoader.java:618)
at
java.xml/com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.findSchemaGrammar(XMLSchemaValidator.java:2711)
at
java.xml/com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.handleStartElement(XMLSchemaValidator.java:2070)
at
java.xml/com.sun.org.apache.xerces.internal.impl.xs.XMLSchemaValidator.startElement(XMLSchemaValidator.java:830)
at
java.xml/com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.scanStartElement(XMLNSDocumentScannerImpl.java:376)
at
java.xml/com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl$NSContentDriver.scanRootElementHook(XMLNSDocumentScannerImpl.java:615)
at
java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(XMLDocumentFragmentScannerImpl.java:3079)
at
java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl$PrologDriver.next(XMLDocumentScannerImpl.java:836)
at
java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(XMLDocumentScannerImpl.java:605)
at
java.xml/com.sun.org.apache.xerces.internal.impl.XMLNSDocumentScannerImpl.next(XMLNSDocumentScannerImpl.java:114)
at
java.xml/com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(XMLDocumentFragmentScannerImpl.java:542)
at
java.xml/com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:889)
at
java.xml/com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(XML11Configuration.java:825)
at
java.xml/com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(XMLParser.java:141)
at
java.xml/com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(DOMParser.java:247)
at
java.xml/com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(DocumentBuilderImpl.java:342)
at
org.springframework.beans.factory.xml.DefaultDocumentLoader.loadDocument(DefaultDocumentLoader.java:77)
at
org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadDocument(XmlBeanDefinitionReader.java:441)
at
org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:399)
at
org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:347)
at
org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:319)
at
org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:184)
at
org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:220)
at
org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:191)
at
org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:253)
at
org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:130)
at
org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:95)
at
org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:131)
at
org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:717)
at
org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:599)
at
org.apache.activemq.osgi.ActiveMQServiceFactory.updated(ActiveMQServiceFactory.java:128)
at
org.apache.felix.cm.impl.helper.ManagedServiceFactoryTracker.updated(ManagedServiceFactoryTracker.java:159)
at
org.apache.felix.cm.impl.helper.ManagedServiceFactoryTracker.provideConfiguration(ManagedServiceFactoryTracker.java:93)
at
org.apache.felix.cm.impl.ConfigurationManager$ManagedServiceFactoryUpdate.provide(ConfigurationManager.java:1266)
at
org.apache.felix.cm.impl.ConfigurationManager$ManagedServiceFactoryUpdate.run(ConfigurationManager.java:1210)
at org.apache.felix.cm.impl.UpdateThread.run0(UpdateThread.java:122)
at org.apache.felix.cm.impl.UpdateThread.run(UpdateThread.java:84)
at java.base/java.lang.Thread.run(Thread.java:1583)
Caused by: java.net.UnknownHostException: www.springframework.org
at java.base/sun.nio.ch.NioSocketImpl.connect(NioSocketImpl.java:567)
at java.base/java.net.Socket.connect(Socket.java:751)
at java.base/java.net.Socket.connect(Socket.java:686)
at java.base/sun.net.NetworkClient.doConnect(NetworkClient.java:183)
at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:531)
at java.base/sun.net.www.http.HttpClient.openServer(HttpClient.java:636)
at java.base/sun.net.www.http.HttpClient.<init>(HttpClient.java:280)
at java.base/sun.net.www.http.HttpClient.New(HttpClient.java:386)
at java.base/sun.net.www.http.HttpClient.New(HttpClient.java:408)
at
java.base/sun.net.www.protocol.http.HttpURLConnection.getNewHttpClient(HttpURLConnection.java:1319)
at
java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect0(HttpURLConnection.java:1252)
at
java.base/sun.net.www.protocol.http.HttpURLConnection.plainConnect(HttpURLConnection.java:1138)
at
java.base/sun.net.www.protocol.http.HttpURLConnection.connect(HttpURLConnection.java:1067)
at
java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1690)
at
java.base/sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1614)
at
java.xml/com.sun.org.apache.xerces.internal.impl.XMLEntityManager.setupCurrentEntity(XMLEntityManager.java:678)
at
java.xml/com.sun.org.apache.xerces.internal.impl.XMLVersionDetector.determineDocVersion(XMLVersionDetector.java:150)
at
java.xml/com.sun.org.apache.xerces.internal.impl.xs.opti.SchemaParsingConfig.parse(SchemaParsingConfig.java:593)
at
java.xml/com.sun.org.apache.xerces.internal.impl.xs.opti.SchemaParsingConfig.parse(SchemaParsingConfig.java:696)
at
java.xml/com.sun.org.apache.xerces.internal.impl.xs.opti.SchemaDOMParser.parse(SchemaDOMParser.java:530)
at
java.xml/com.sun.org.apache.xerces.internal.impl.xs.traversers.XSDHandler.getSchemaDocument(XSDHandler.java:2227)
... 39 more
This seems due to a missing entry in the "META-INF/spring.schemas" file.
Upon adding the following line
http\://www.springframework.org/schema/beans/spring-beans.xsd=org/springframework/beans/factory/xml/spring-beans.xsd
then ActiveMQ is able to start without reaching out to the Internet.
