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From bugzi...@apache.org
Subject DO NOT REPLY [Bug 22439] New: - NPE compiling JSP Document
Date Thu, 14 Aug 2003 21:50:21 GMT
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http://nagoya.apache.org/bugzilla/show_bug.cgi?id=22439

NPE compiling JSP Document

           Summary: NPE compiling JSP Document
           Product: Tomcat 5
           Version: 5.0.7
          Platform: Other
        OS/Version: All
            Status: NEW
          Severity: Major
          Priority: Other
         Component: Jasper2
        AssignedTo: tomcat-dev@jakarta.apache.org
        ReportedBy: hans@gefionsoftware.com


The following JSP Document doesn't compile:

<!DOCTYPE html
  PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
  "http://www.w3c.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html 
  xmlns="http://www.w3c.org/1999/xhtml" 
  xmlns:jsp="http://java.sun.com/JSP/Page" 
  xml:lang="en" lang="en">

  <jsp:directive.page contentType="text/html" /> 
 
  <head>
    <title>A JSP Document</title>
  </head>
  <body bgcolor="white">
    <h1>All Request Parameters</h1>

    <ul> 
      <c:forEach xmlns:c="http://java.sun.com/jsp/jstl/core"
        items="${paramValues}" var="current"> 
        <li> 
          ${current.key}:
          <c:forEach items="${current.value}" var="parValue">
            <br/>${parValue} 
          </c:forEach>
        </li> 
      </c:forEach> 
    </ul> 

    <jsp:element name="${param.element}">
      <jsp:attribute name="style">${param.style}</jsp:attribute>
      <jsp:body>${param.body}</jsp:body>
    </jsp:element>

  </body>
</html>

The root cause for the exception is:

java.lang.NullPointerException
	org.apache.jasper.compiler.PageInfo.popPrefixMapping(PageInfo.java:339)
	org.apache.jasper.compiler.JspDocumentParser.endPrefixMapping(JspDocumentParser.java:574)
	org.apache.xerces.parsers.AbstractSAXParser.endNamespaceMapping(Unknown Source)
	org.apache.xerces.parsers.AbstractSAXParser.endElement(Unknown Source)
	org.apache.xerces.impl.XMLNamespaceBinder.handleEndElement(Unknown Source)
	org.apache.xerces.impl.XMLNamespaceBinder.endElement(Unknown Source)
	org.apache.xerces.impl.dtd.XMLDTDValidator.endNamespaceScope(Unknown Source)
	org.apache.xerces.impl.dtd.XMLDTDValidator.handleEndElement(Unknown Source)
	org.apache.xerces.impl.dtd.XMLDTDValidator.endElement(Unknown Source)
	org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanEndElement(Unknown
Source)
	org.apache.xerces.impl.XMLDocumentFragmentScannerImpl$FragmentContentDispatcher.dispatch(Unknown
Source)
	org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
	org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
	org.apache.xerces.parsers.DTDConfiguration.parse(Unknown Source)
	org.apache.xerces.parsers.XMLParser.parse(Unknown Source)
	org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
	javax.xml.parsers.SAXParser.parse(Unknown Source)
	org.apache.jasper.compiler.JspDocumentParser.parse(JspDocumentParser.java:195)
	org.apache.jasper.compiler.ParserController.parse(ParserController.java:223)
	org.apache.jasper.compiler.ParserController.parse(ParserController.java:146)
	org.apache.jasper.compiler.ParserController.parse(ParserController.java:132)
	org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:245)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:453)
	org.apache.jasper.compiler.Compiler.compile(Compiler.java:439)
	org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:555)
	org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:300)
	org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:293)
	org.apache.jasper.servlet.JspServlet.service(JspServlet.java:240)
	javax.servlet.http.HttpServlet.service(HttpServlet.java:856)

It works fine with TC 5.0.4

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