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James,
On 10/11/12 3:59 PM, James Lampert wrote:
> Pid * wrote:
>
>> Examine the first few bytes of the input. I seem to remember a
>> character encoding issue causing this error.
>
> Of what input in particular? At least some of these exceptions
> appear to be getting thrown in the process of bringing up Tomcat,
> so I'm guessing we're not talking about a request.
(apologies for the ugly formatting of the stack trace):
> Error at line 1 column 1: Content is not allowed in prolog.
> Throwable occurred: org.xml.sax.SAXParseException: Content is not
> allowed in prolog. at
> org.apache.xerces.util.ErrorHandlerWrapper.createSAXParseException(Unknown
>
>
Source) at
> org.apache.xerces.util.ErrorHandlerWrapper.fatalError(Unknown
> Source) at
> org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown Source)
> at org.apache.xerces.impl.XMLErrorReporter.reportError(Unknown
> Source) at
> org.apache.xerces.impl.XMLScanner.reportFatalError(Unknown Source)
> at
> org.apache.xerces.impl.XMLDocumentScannerImpl$PrologDispatcher.dispatch(Unknown
>
>
Source) at
> org.apache.xerces.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown
>
>
Source) at
> org.apache.xerces.parsers.XML11Configuration.parse(Unknown Source)
> at org.apache.xerces.parsers.XML11Configuration.parse(Unknown
> Source) at
> org.apache.xerces.parsers.XMLParser.parse(Unknown Source) at
> org.apache.xerces.parsers.AbstractSAXParser.parse(Unknown Source)
> at
> org.apache.xerces.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown
> Source) at
> org.apache.tomcat.util.digester.Digester.parse(Digester.java:1537)
> at
> org.apache.catalina.startup.TldConfig.tldScanStream(TldConfig.java:515)
>
>
at
> org.apache.catalina.startup.TldConfig.tldScanWebXml(TldConfig.java:328)
>
>
[...]
Tomcat is attempting to scan your webapp's web.xml file. So try
something like this:
$ head -n 1 webapps/yourwebapp/web.xml | od -t x1a
This is what I get from my own web.xml:
0000000 3c 3f 78 6d 6c 20 76 65 72 73 69 6f 6e 3d 22 31
< ? x m l sp v e r s i o n = " 1
0000020 2e 30 22 20 65 6e 63 6f 64 69 6e 67 3d 22 49 53
. 0 " sp e n c o d i n g = " I S
0000040 4f 2d 38 38 35 39 2d 31 22 3f 3e 0a
O - 8 8 5 9 - 1 " ? > nl
0000054
The very first byte is 0x3c which is '<', etc. If you have a BOM (byte
order mark) you might see something different. I seem to remember
certain BOMs causing problems with Xerces: you might have to trim-off
your BOMs and rely on the encoding="whatever" that you have in the XML
document itself (which really should be the way things work with XML
anyway).
Hope that helps,
- -chris
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