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https://issues.apache.org/jira/browse/CXF-2919?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12894061#action_12894061
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Glen Mazza commented on CXF-2919:
---------------------------------
Why is this "critical"--it seems oxymoronic for a XML Schema to contain a DTD
declaration. (Are they even permitted to have them?) What do you propose as a
solution--are you just asking for a wrapping of the NPE (reasonable enough) or
for CXF to somehow handle DTD's within XML Schemas? (Are there specifications
for that? -- I don't know.)
> NullPointerException at org.apache.cxf.staxutils.StaxUtils.writeNode(Node,
> XMLStreamWriter, boolean) when DOCTYPE is in a XML Schema
> ------------------------------------------------------------------------------------------------------------------------------------
>
> Key: CXF-2919
> URL: https://issues.apache.org/jira/browse/CXF-2919
> Project: CXF
> Issue Type: Bug
> Affects Versions: 2.2.9
> Reporter: Mauro Molinari
> Priority: Critical
>
> Following a contract first approach, if I expose a WSDL which imports a XSD
> with a DOCTYPE declaration, for instance:
> <?xml version="1.0" encoding="utf-8"?>
> <!DOCTYPE xs:schema PUBLIC "-//W3C//DTD XMLSCHEMA 200102//EN"
> "http://www.w3.org/2001/XMLSchema.dtd";>
> <!--
> [...]
> -->
> <xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"; [...]>
> then, when invoking the CXFServlet to show this XSD I get the following
> exception:
> java.lang.NullPointerException
> at
> com.sun.xml.internal.stream.writers.UTF8OutputStreamWriter.write(UTF8OutputStreamWriter.java:127)
> at
> com.sun.xml.internal.stream.writers.XMLStreamWriterImpl.writeDTD(XMLStreamWriterImpl.java:722)
> at org.apache.cxf.staxutils.StaxUtils.writeNode(StaxUtils.java:775)
> at org.apache.cxf.staxutils.StaxUtils.writeDocument(StaxUtils.java:600)
> at org.apache.cxf.staxutils.StaxUtils.writeDocument(StaxUtils.java:588)
> at org.apache.cxf.staxutils.StaxUtils.writeNode(StaxUtils.java:762)
> at
> org.apache.cxf.transport.http.WSDLQueryHandler.writeResponse(WSDLQueryHandler.java:230)
> at
> org.apache.cxf.transport.servlet.ServletController.invoke(ServletController.java:162)
> at
> org.apache.cxf.transport.servlet.AbstractCXFServlet.invoke(AbstractCXFServlet.java:142)
> at
> org.apache.cxf.transport.servlet.AbstractHTTPServlet.handleRequest(AbstractHTTPServlet.java:179)
> at
> org.apache.cxf.transport.servlet.AbstractHTTPServlet.doGet(AbstractHTTPServlet.java:108)
> at javax.servlet.http.HttpServlet.service(HttpServlet.java:617)
> at
> org.apache.cxf.transport.servlet.AbstractHTTPServlet.service(AbstractHTTPServlet.java:159)
> at
> org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
> at
> org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
> at
> org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:233)
> at
> org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:191)
> at
> org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
> at
> org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
> at
> org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
> at
> org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:298)
> at
> org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:857)
> at
> org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:588)
> at
> org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
> at java.lang.Thread.run(Thread.java:619)
> This is because org.apache.cxf.staxutils.StaxUtils.writeNode(Node,
> XMLStreamWriter, boolean) does the following for a Node of type
> DOCUMENT_TYPE_NODE:
> try {
> writer.writeDTD(((DocumentType)n).getTextContent());
> } catch (UnsupportedOperationException ex) {
> //can we ignore? DOM writers really don't allow this
> //as there isn't a way to write a DTD in dom
> }
> However, org.w3c.dom.Node.getTextContent() by contract returns NULL for a
> Node of type DOCUMENT_TYPE_NODE. This causes the NPE.
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