[jboss-jira] [JBoss JIRA] Created: (JBAS-5518) JSP compilation exception with pageEncoding="utf-8" and file with byte order marks

Ralf Zimmermann (JIRA) jira-events at lists.jboss.org
Tue May 13 06:37:26 EDT 2008


JSP compilation exception with pageEncoding="utf-8"  and file with byte order marks
-----------------------------------------------------------------------------------

                 Key: JBAS-5518
                 URL: http://jira.jboss.com/jira/browse/JBAS-5518
             Project: JBoss Application Server
          Issue Type: Bug
      Security Level: Public (Everyone can see)
          Components: Web (Tomcat) service
    Affects Versions: JBossAS-4.2.2.GA
         Environment: Windows XP, x86
            Reporter: Ralf Zimmermann
         Assigned To: Remy Maucherat


The following exception is thrown on page compilation, if the attribute "pageEncoding" of the page directive ist set to "utf-8" (lower case) and the
JSP-File has byte order marks. If the attribute is set to "UTF-8" (upper case) or the file has no byte order marks, the compilation workes fine.

{code}
12:32:16,946 ERROR [[jsp]] Servlet.service() for servlet jsp threw exception
org.apache.jasper.JasperException: /dialog.jsp(2,0) Page-encoding specified in XML prolog (UTF-8) is different from that specified in page directive (utf-8)
	at org.apache.jasper.compiler.DefaultErrorHandler.jspError(DefaultErrorHandler.java:40)
	at org.apache.jasper.compiler.ErrorDispatcher.dispatch(ErrorDispatcher.java:407)
	at org.apache.jasper.compiler.ErrorDispatcher.jspError(ErrorDispatcher.java:236)
	at org.apache.jasper.compiler.Validator$DirectiveVisitor.comparePageEncodings(Validator.java:362)
	at org.apache.jasper.compiler.Validator$DirectiveVisitor.visit(Validator.java:197)
	at org.apache.jasper.compiler.Node$PageDirective.accept(Node.java:590)
	at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2338)
	at org.apache.jasper.compiler.Node$Visitor.visitBody(Node.java:2388)
	at org.apache.jasper.compiler.Node$Visitor.visit(Node.java:2394)
	at org.apache.jasper.compiler.Node$Root.accept(Node.java:489)
	at org.apache.jasper.compiler.Node$Nodes.visit(Node.java:2338)
	at org.apache.jasper.compiler.Validator.validate(Validator.java:1700)
	at org.apache.jasper.compiler.Compiler.generateJava(Compiler.java:178)
	at org.apache.jasper.compiler.Compiler.compile(Compiler.java:306)
	at org.apache.jasper.compiler.Compiler.compile(Compiler.java:286)
	at org.apache.jasper.compiler.Compiler.compile(Compiler.java:273)
	at org.apache.jasper.JspCompilationContext.compile(JspCompilationContext.java:566)
	at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:316)
	at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:336)
	at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:265)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	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:654)
	at org.apache.catalina.core.ApplicationDispatcher.processRequest(ApplicationDispatcher.java:445)
	at org.apache.catalina.core.ApplicationDispatcher.doForward(ApplicationDispatcher.java:379)
	at org.apache.catalina.core.ApplicationDispatcher.forward(ApplicationDispatcher.java:292)
	at de.cit.jsp.control.DispatchServlet.forward(DispatchServlet.java:286)
	at de.cit.jsp.control.DispatchServlet.doGet(DispatchServlet.java:272)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:690)
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:803)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at de.cit.util.javax.servlet.ValidationFilter.doFilter(ValidationFilter.java:108)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at de.cit.util.javax.servlet.jsp.XHtmlContentTypeFilter.doFilter(XHtmlContentTypeFilter.java:36)
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:235)
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
	at org.jboss.web.tomcat.filters.ReplyHeaderFilter.doFilter(ReplyHeaderFilter.java:96)
	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:230)
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
	at org.jboss.web.tomcat.security.SecurityAssociationValve.invoke(SecurityAssociationValve.java:179)
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:432)
	at org.jboss.web.tomcat.security.JaccContextValve.invoke(JaccContextValve.java:84)
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:127)
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:102)
	at org.jboss.web.tomcat.service.jca.CachedConnectionValve.invoke(CachedConnectionValve.java:157)
	at org.apache.catalina.authenticator.SingleSignOn.invoke(SingleSignOn.java:420)
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:262)
	at org.apache.coyote.ajp.AjpProcessor.process(AjpProcessor.java:437)
	at org.apache.coyote.ajp.AjpProtocol$AjpConnectionHandler.process(AjpProtocol.java:366)
	at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:446)
	at java.lang.Thread.run(Thread.java:619)
{code}

Case insensitive camparison in org.apache.jasper.compiler.Validator.comparePageEncodings(...) seems to fix the problem:
{code}
        /*
         * Compares page encodings specified in various places, and throws
         * exception in case of page encoding mismatch.
         * 
         * @param pageDirEnc The value of the pageEncoding attribute of the page
         * directive @param pageDir The page directive node
         * 
         * @throws JasperException in case of page encoding mismatch
         */
        private String comparePageEncodings(String pageDirEnc,
                Node.PageDirective pageDir) throws JasperException {

            Node.Root root = pageDir.getRoot();
            String configEnc = root.getJspConfigPageEncoding();

            /*
             * Compare the 'pageEncoding' attribute of the page directive with
             * the encoding specified in the JSP config element whose URL
             * pattern matches this page. Treat "UTF-16", "UTF-16BE", and
             * "UTF-16LE" as identical.
             */
            if (configEnc != null) {
                if (!pageDirEnc.equalsIgnoreCase(configEnc)
                        && (!pageDirEnc.toUpperCase().startsWith("UTF-16") || !configEnc
                                .toUpperCase().startsWith("UTF-16"))) {
                    err.jspError(pageDir,
                            "jsp.error.config_pagedir_encoding_mismatch",
                            configEnc, pageDirEnc);
                } else {
                    return configEnc;
                }
            }

            /*
             * Compare the 'pageEncoding' attribute of the page directive with
             * the encoding specified in the XML prolog (only for XML syntax,
             * and only if JSP document contains XML prolog with encoding
             * declaration). Treat "UTF-16", "UTF-16BE", and "UTF-16LE" as
             * identical.
             */
            if ((root.isXmlSyntax() && root.isEncodingSpecifiedInProlog()) || root.isBomPresent()) {
                String pageEnc = root.getPageEncoding();
                if (!pageDirEnc.equalsIgnoreCase(pageEnc)
                        && (!pageDirEnc.toUpperCase().startsWith("UTF-16") || !pageEnc
                                .toUpperCase().startsWith("UTF-16"))) {
                    err.jspError(pageDir,
                            "jsp.error.prolog_pagedir_encoding_mismatch",
                            pageEnc, pageDirEnc);
                } else {
                    return pageEnc;
                }
            }
            
            return pageDirEnc;
        }
{code}


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