Created attachment 33561 [details]
This file is saved in open office as xlsx file and was saved in the web application itself, where I got the inputstream to pass to apache poi xssfworkbook constructor.

while uploading xlsx file from the servlet path of tomcat i.e. the file is saved in the application itself. The file input stream was taken from the path file and was loaded. The exception occurred.

org.apache.poi.openxml4j.exceptions.OpenXML4JRuntimeException: Rule M2.4 exception : this error should NEVER happen! Please raise a bug at https://bz.apache.org/bugzilla/enter_bug.cgi?product=POI and attach a file that triggers it, thanks!
	at org.apache.poi.openxml4j.opc.internal.ContentTypeManager.getContentType(ContentTypeManager.java:343)
	at org.apache.poi.openxml4j.opc.internal.ContentTypeManager.removeContentType(ContentTypeManager.java:256)
	at org.apache.poi.openxml4j.opc.OPCPackage.removePart(OPCPackage.java:943)
	at org.apache.poi.openxml4j.opc.PackagePart.getOutputStream(PackagePart.java:522)
	at org.apache.poi.xssf.usermodel.XSSFWorkbook.commit(XSSFWorkbook.java:1678)
	at org.apache.poi.POIXMLDocumentPart.onSave(POIXMLDocumentPart.java:341)
	at org.apache.poi.POIXMLDocument.write(POIXMLDocument.java:206)
	at billing.monthlyTimeSheetReport.TimesheetReportAction.startProcessing(TimesheetReportAction.java:245)
	at billing.monthlyTimeSheetReport.TimesheetReportAction.execute(TimesheetReportAction.java:74)
	at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
	at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
	at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
	at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:643)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:723)
	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.ApplicationDispatcher.invoke(ApplicationDispatcher.java:646)
	at org.apache.catalina.core.ApplicationDispatcher.doInclude(ApplicationDispatcher.java:551)
	at org.apache.catalina.core.ApplicationDispatcher.include(ApplicationDispatcher.java:488)
	at webprompt.application.RequestValidator.doFilter(RequestValidator.java:87)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	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:103)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:293)
	at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:861)
	at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:606)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:489)
	at java.lang.Thread.run(Thread.java:745)

The uploaded file is in the attachment. This file is saved in open office as xlsx file and was saved in the web application itself, where I got the inputstream to pass to apache poi xssfworkbook constructor.

Thanks in advance.