Couldn't parse DCR bytes into DOM

HeMan10

Hi,

After a DCR is saved, I am invoking a jsp page that deploys data to database using a webservice. It all works as expected but the next time I try to edit a DCR it throws the following exception:

com.interwoven.ui.formspub.datacapture.EditDCRPredicate$ReadDCRException: Couldn't parse DCR bytes into DOM [unable_to_parse_dcr ]:null
 at com.interwoven.ui.formspub.datacapture.EditDCRPredicate.readDCRContents(EditDCRPredicate.java:105)
 at com.interwoven.ui.formspub.datacapture.EditDCRPredicate.execute(EditDCRPredicate.java:51)
 at com.interwoven.ui.formspub.datacapture.AbstractOpenDCRCommand.execute(AbstractOpenDCRCommand.java:112)
 at com.interwoven.ui.formspub.datacapture.EditDCRCommand.execute(EditDCRCommand.java:104)
 at com.interwoven.ui.base.impl.command.CommandHandler.doExecuteCommand(CommandHandler.java:915)
 at com.interwoven.ui.base.impl.command.CommandHandler.tryRunCommandDescriptor(CommandHandler.java:752)
 at com.interwoven.ui.base.impl.command.CommandHandler.tryRunCommandID(CommandHandler.java:629)
 at com.interwoven.ui.base.impl.command.CommandHandler.runCommand(CommandHandler.java:419)
 at com.interwoven.ui.base.impl.command.CommandCallbackContextImpl.callback(CommandCallbackContextImpl.java:45)
 at com.interwoven.ui.base.wizard.WizardCommand.execute(WizardCommand.java:115)
 at com.interwoven.ui.base.impl.command.CommandHandler.doExecuteCommand(CommandHandler.java:915)
 at com.interwoven.ui.base.impl.command.CommandHandler.tryRunCommandDescriptor(CommandHandler.java:752)
 at com.interwoven.ui.base.impl.command.CommandHandler.tryRunCommandID(CommandHandler.java:629)
 at com.interwoven.ui.base.impl.command.CommandHandler.runCommandLoop(CommandHandler.java:234)
 at com.interwoven.ui.base.impl.command.CommandServlet.doGet(CommandServlet.java:163)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:627)
 at javax.servlet.http.HttpServlet.service(HttpServlet.java:729)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:269)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
 at com.interwoven.ui.base.impl.auth.AuthenticationFilter.doFilter(AuthenticationFilter.java:204)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
 at com.interwoven.ui.base.util.SetRequestEncodingFilter.doFilter(SetRequestEncodingFilter.java:105)
 at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:215)
 at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:188)
 at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:213)
 at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:172)
 at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
 at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:117)
 at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:108)
 at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:174)
 at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:875)
 at org.apache.coyote.http11.Http11BaseProtocol$Http11ConnectionHandler.processConnection(Http11BaseProtocol.java:665)
 at org.apache.tomcat.util.net.PoolTcpEndpoint.processSocket(PoolTcpEndpoint.java:528)
 at org.apache.tomcat.util.net.LeaderFollowerWorkerThread.runIt(LeaderFollowerWorkerThread.java:81)
 at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:689)
 at java.lang.Thread.run(Thread.java:595)

Any idea why this might be happening and how to resolve it?

Thanks,
-H

Rick Poulin

Does it still happen if you just save and re-open without triggering your JSP?

No - The JSP is somehow modifying the DCR, possibly re-saving it with the wrong combination of character encoding (DCRs are UTF8 documents saved as ANSI, without the UTF8 BOM).

Yes - There may be characters in your document that aren't valid, although I'd expect that the first call to save would fail. For instance, I've seen this when pasting MSWord hyperlinks into TinyMCE, which sometimes introduces an invalid character sequence in the anchor tag's title attribute (depending on the codepage of your MSWord doc).