I can no longer make a XAR export of our wiki. The essential error message
in catalina.out seems to be

"Invalid white space character (0x1) in text to output (in xml 1.1, could
output as a character entity)"

Alas, there is no information about which wiki page contains this invalid
character. I can, of course, export parts of the wiki and repeat the
process until I find the offending page, but I suspect there has got to be
a more efficient way.

The full, relevant section of catalina.out on our test server is included
below.

Thanks in advance for any tips!

Cheers,
Peter John Acklam


2016-02-19 09:36:17,163 [
http://wiki-test/xwiki/bin/export/XWiki/XWikiPreferences?editor=globaladmin&section=Export]
WARN c.x.x.w.XWikiAction - Uncaught exception: Error number 11015 in 11:
Exception while exporting
com.xpn.xwiki.XWikiException: Error number 11015 in 11: Exception while
exporting
at com.xpn.xwiki.web.ExportAction.render(ExportAction.java:84)
~[xwiki-platform-legacy-oldcore-7.4.1.jar:na]
at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:417)
[xwiki-platform-legacy-oldcore-7.4.1.jar:na]
at com.xpn.xwiki.web.XWikiAction.execute(XWikiAction.java:184)
[xwiki-platform-legacy-oldcore-7.4.1.jar:na]
at
org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:425)
[struts-core-1.3.10.jar:1.3.10]
at
org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:228)
[struts-core-1.3.10.jar:1.3.10]
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1913)
[struts-core-1.3.10.jar:1.3.10]
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:462)
[struts-core-1.3.10.jar:1.3.10]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:648)
[servlet-api.jar:na]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
[servlet-api.jar:na]
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:291)
[catalina.jar:8.0.30]
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
[catalina.jar:8.0.30]
at com.xpn.xwiki.web.ActionFilter.doFilter(ActionFilter.java:115)
[xwiki-platform-legacy-oldcore-7.4.1.jar:na]
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
[catalina.jar:8.0.30]
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
[catalina.jar:8.0.30]
at
org.xwiki.wysiwyg.server.filter.ConversionFilter.doFilter(ConversionFilter.java:127)
[xwiki-platform-wysiwyg-server-7.4.1.jar:na]
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
[catalina.jar:8.0.30]
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
[catalina.jar:8.0.30]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)
[tomcat-websocket.jar:8.0.30]
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
[catalina.jar:8.0.30]
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
[catalina.jar:8.0.30]
at
org.xwiki.container.servlet.filters.internal.SetHTTPHeaderFilter.doFilter(SetHTTPHeaderFilter.java:63)
[xwiki-platform-container-servlet-7.4.1.jar:na]
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
[catalina.jar:8.0.30]
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
[catalina.jar:8.0.30]
at
com.xpn.xwiki.plugin.webdav.XWikiDavFilter.doFilter(XWikiDavFilter.java:66)
[xwiki-platform-webdav-server-7.4.1.jar:na]
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
[catalina.jar:8.0.30]
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
[catalina.jar:8.0.30]
at
org.xwiki.container.servlet.filters.internal.SavedRequestRestorerFilter.doFilter(SavedRequestRestorerFilter.java:208)
[xwiki-platform-container-servlet-7.4.1.jar:na]
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
[catalina.jar:8.0.30]
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
[catalina.jar:8.0.30]
at
org.xwiki.container.servlet.filters.internal.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:111)
[xwiki-platform-container-servlet-7.4.1.jar:na]
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
[catalina.jar:8.0.30]
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
[catalina.jar:8.0.30]
at
org.xwiki.resource.servlet.RoutingFilter.doFilter(RoutingFilter.java:137)
[xwiki-platform-resource-servlet-7.4.1.jar:na]
at
org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:239)
[catalina.jar:8.0.30]
at
org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
[catalina.jar:8.0.30]
at
org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:212)
[catalina.jar:8.0.30]
at
org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:106)
[catalina.jar:8.0.30]
at
org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:502)
[catalina.jar:8.0.30]
at
org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:141)
[catalina.jar:8.0.30]
at
org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79)
[catalina.jar:8.0.30]
at
org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:616)
[catalina.jar:8.0.30]
at
org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:88)
[catalina.jar:8.0.30]
at
org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:521)
[catalina.jar:8.0.30]
at
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1096)
[tomcat-coyote.jar:8.0.30]
at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:674)
[tomcat-coyote.jar:8.0.30]
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1500)
[tomcat-coyote.jar:8.0.30]
at
org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.run(NioEndpoint.java:1456)
[tomcat-coyote.jar:8.0.30]
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
[na:1.8.0_66]
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
[na:1.8.0_66]
at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
[tomcat-util.jar:8.0.30]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_66]
Caused by: org.xwiki.filter.FilterException: Failed to write element
at
org.xwiki.filter.xml.internal.output.FilterStreamXMLStreamWriter.writeCharacters(FilterStreamXMLStreamWriter.java:158)
~[xwiki-commons-filter-xml-7.4.1.jar:na]
at
org.xwiki.filter.xml.internal.output.FilterStreamXMLStreamWriter.writeElement(FilterStreamXMLStreamWriter.java:145)
~[xwiki-commons-filter-xml-7.4.1.jar:na]
at
org.xwiki.filter.xar.internal.output.XAROutputFilterStream.beginWikiDocumentRevision(XAROutputFilterStream.java:349)
~[xwiki-platform-filter-stream-xar-7.4.1.jar:na]
at sun.reflect.GeneratedMethodAccessor601.invoke(Unknown Source) ~[na:na]
at
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
~[na:1.8.0_66]
at java.lang.reflect.Method.invoke(Method.java:497) ~[na:1.8.0_66]
at org.xwiki.filter.internal.FilterProxy.invoke(FilterProxy.java:90)
~[xwiki-commons-filter-api-7.4.1.jar:na]
at org.xwiki.filter.internal.FilterProxy.invoke(FilterProxy.java:63)
~[xwiki-commons-filter-api-7.4.1.jar:na]
at com.sun.proxy.$Proxy88.beginWikiDocumentRevision(Unknown Source) ~[na:na]
at
org.xwiki.filter.instance.internal.input.XWikiDocumentLocaleEventGenerator.writeRevision(XWikiDocumentLocaleEventGenerator.java:167)
~[xwiki-platform-filter-instance-oldcore-7.4.1.jar:na]
at
org.xwiki.filter.instance.internal.input.XWikiDocumentLocaleEventGenerator.write(XWikiDocumentLocaleEventGenerator.java:116)
~[xwiki-platform-filter-instance-oldcore-7.4.1.jar:na]
at
org.xwiki.filter.instance.internal.input.XWikiDocumentLocaleEventGenerator.write(XWikiDocumentLocaleEventGenerator.java:55)
~[xwiki-platform-filter-instance-oldcore-7.4.1.jar:na]
at
org.xwiki.filter.instance.internal.input.AbstractBeanEntityEventGenerator.write(AbstractBeanEntityEventGenerator.java:114)
~[xwiki-platform-filter-instance-api-7.4.1.jar:na]
at
org.xwiki.filter.instance.input.AbstractEntityEventGenerator.write(AbstractEntityEventGenerator.java:77)
~[xwiki-platform-filter-instance-api-7.4.1.jar:na]
at
org.xwiki.filter.instance.internal.input.DocumentInstanceInputEventGenerator.beginWikiDocument(DocumentInstanceInputEventGenerator.java:107)
~[xwiki-platform-filter-instance-oldcore-7.4.1.jar:na]
at
org.xwiki.filter.instance.internal.input.InstanceInputFilterStream.writeDocument(InstanceInputFilterStream.java:229)
~[xwiki-platform-filter-instance-api-7.4.1.jar:na]
at
org.xwiki.filter.instance.internal.input.InstanceInputFilterStream.writeSpace(InstanceInputFilterStream.java:195)
~[xwiki-platform-filter-instance-api-7.4.1.jar:na]
at
org.xwiki.filter.instance.internal.input.InstanceInputFilterStream.writeWiki(InstanceInputFilterStream.java:161)
~[xwiki-platform-filter-instance-api-7.4.1.jar:na]
at
org.xwiki.filter.instance.internal.input.InstanceInputFilterStream.read(InstanceInputFilterStream.java:130)
~[xwiki-platform-filter-instance-api-7.4.1.jar:na]
at
org.xwiki.filter.instance.internal.input.InstanceInputFilterStream.read(InstanceInputFilterStream.java:54)
~[xwiki-platform-filter-instance-api-7.4.1.jar:na]
at
org.xwiki.filter.input.AbstractBeanInputFilterStream.read(AbstractBeanInputFilterStream.java:80)
~[xwiki-commons-filter-api-7.4.1.jar:na]
at com.xpn.xwiki.web.ExportAction.exportXAR(ExportAction.java:337)
~[xwiki-platform-legacy-oldcore-7.4.1.jar:na]
at com.xpn.xwiki.web.ExportAction.render(ExportAction.java:77)
~[xwiki-platform-legacy-oldcore-7.4.1.jar:na]
... 50 common frames omitted
Caused by: com.ctc.wstx.exc.WstxIOException: Invalid white space character
(0x1) in text to output (in xml 1.1, could output as a character entity)
at
com.ctc.wstx.sw.BaseStreamWriter.writeCharacters(BaseStreamWriter.java:458)
~[woodstox-core-asl-4.4.1.jar:4.4.1]
at
javanet.staxutils.IndentingXMLStreamWriter.writeCharacters(IndentingXMLStreamWriter.java:209)
~[stax-utils-20070216.jar:na]
at
org.xwiki.filter.xml.internal.output.FilterStreamXMLStreamWriter.writeCharacters(FilterStreamXMLStreamWriter.java:156)
~[xwiki-commons-filter-xml-7.4.1.jar:na]
... 72 common frames omitted
Caused by: java.io.IOException: Invalid white space character (0x1) in text
to output (in xml 1.1, could output as a character entity)
at
com.ctc.wstx.api.InvalidCharHandler$FailingHandler.convertInvalidChar(InvalidCharHandler.java:55)
~[woodstox-core-asl-4.4.1.jar:4.4.1]
at com.ctc.wstx.sw.XmlWriter.handleInvalidChar(XmlWriter.java:629)
~[woodstox-core-asl-4.4.1.jar:4.4.1]
at
com.ctc.wstx.sw.BufferingXmlWriter.writeCharacters(BufferingXmlWriter.java:586)
~[woodstox-core-asl-4.4.1.jar:4.4.1]
at
com.ctc.wstx.sw.BaseStreamWriter.writeCharacters(BaseStreamWriter.java:456)
~[woodstox-core-asl-4.4.1.jar:4.4.1]
... 74 common frames omitted
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