Org xml sax saxparseexception ошибка

This is often caused by a white space before the XML declaration, but it could be any text, like a dash or any character. I say often caused by white space because people assume white space is always ignorable, but that’s not the case here.

Another thing that often happens is a UTF-8 BOM (byte order mark), which is allowed before the XML declaration can be treated as whitespace if the document is handed as a stream of characters to an XML parser rather than as a stream of bytes.

The same can happen if schema files (.xsd) are used to validate the xml file and one of the schema files has an UTF-8 BOM.

Actually in addition to Yuriy Zubarev’s Post

When you pass a nonexistent xml file to parser. For example you pass

new File("C:/temp/abc")

when only C:/temp/abc.xml file exists on your file system

In either case

builder = DocumentBuilderFactory.newInstance().newDocumentBuilder();
document = builder.parse(new File("C:/temp/abc"));

or

DOMParser parser = new DOMParser();
parser.parse("file:C:/temp/abc");

All give the same error message.

Very disappointing bug, because the following trace

javax.servlet.ServletException
    at org.apache.xerces.parsers.DOMParser.parse(Unknown Source)
...
Caused by: org.xml.sax.SAXParseException: Content is not allowed in prolog.
... 40 more

doesn’t say anything about the fact of ‘file name is incorrect’ or ‘such a file does not exist’. In my case I had absolutely correct xml file and had to spent 2 days to determine the real problem.

Try adding a space between the encoding="UTF-8" string in the prolog and the terminating ?>. In XML the prolog designates this bracket-question mark delimited element at the start of the document (while the tag prolog in stackoverflow refers to the programming language).

Added: Is that dash in front of your prolog part of the document? That would be the error there, having data in front of the prolog, -<?xml version="1.0" encoding="UTF-8"?>.

answered Feb 28, 2011 at 12:46

I had the same problem (and solved it) while trying to parse an XML document with freemarker.

I had no spaces before the header of XML file.

The problem occurs when and only when the file encoding and the XML encoding attribute are different. (ex: UTF-8 file with UTF-16 attribute in header).

So I had two ways of solving the problem:

1. changing the encoding of the file itself
2. changing the header UTF-16 to UTF-8

answered Feb 28, 2011 at 6:06

Igor KustovIgor Kustov

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DineshkumarDineshkumar

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Sometimes it’s the code, not the XML

The following code,

Document doc = dBuilder.parse(new InputSource(new StringReader("file.xml")));

will also result in this error,

[Fatal Error] :1:1: Content is not allowed in prolog.org.xml.sax.SAXParseException; lineNumber: 1; columnNumber: 1; Content is not allowed in prolog.

because it’s attempting to parse the string literal, "file.xml" (not the contents of the file.xml file) and failing because "file.xml" as a string is not well-formed XML.

Fix: Remove StringReader():

Document doc = dBuilder.parse(new InputSource("file.xml"));

Similarly, dirty buffer problems can leave residual junk ahead of the actual XML. If you’ve carefully checked your XML and are still getting this error, log the exact contents being passed to the parser; sometimes what’s actually being (tried to be) parsed is surprising.

answered Nov 17, 2017 at 20:11

answered Aug 26, 2018 at 13:39

Lydia RalphLydia Ralph

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RalphRalph

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Sahil JSahil J

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What i have tried [Did not work]

In my case the web.xml in my application had extra space. Even after i deleted ; it did not work!.

I was playing with logging.properties and web.xml in my tomcat, but even after i reverted the error persists!.

Solution

To be specific i tried do adding

org.apache.catalina.filters.ExpiresFilter.level = FINE

Tomcat expire filter is not working correctly

answered Feb 5, 2018 at 15:50

zovitszovits

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answered Feb 23, 2012 at 20:27

answered May 28, 2012 at 10:26

answered Aug 29, 2012 at 7:45

Amir KeibiAmir Keibi

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For all those that get this error:
WARNING: Catalina.start using conf/server.xml: Content is not allowed in prolog.

Not very informative.. but what this actually means is that there is garbage in your conf/server.xml file.

I have seen this exact error in other XML files.. this error can be caused by making changes with a text editor which introduces the garbage.

The way you can verify whether or not you have garbage in the file is to open it with a «HEX Editor» If you see any character before this string

     "<?xml version="1.0" encoding="UTF-8"?>"

like this would be garbage

     "‰ŠŒ<?xml version="1.0" encoding="UTF-8"?>"

that is your problem….
The Solution is to use a good HEX Editor.. One that will allow you to save files with differing types of encoding..

Then just save it as UTF-8.
Some systems that use XML files may need it saved as UTF NO BOM
Which means with «NO Byte Order Mark»

Hope this helps someone out there!!

answered May 18, 2016 at 22:51

FabioSteinFabioStein

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I had the same problem with some XML files, I solved reading the file with ANSI encoding (Windows-1252) and writing a file with UTF-8 encoding with a small script in Python. I tried use Notepad++ but I didn’t have success:

import os
import sys

path = os.path.dirname(__file__)

file_name = 'my_input_file.xml'

if __name__ == "__main__":
    with open(os.path.join(path, './' + file_name), 'r', encoding='cp1252') as f1:
        lines = f1.read()
        f2 = open(os.path.join(path, './' + 'my_output_file.xml'), 'w', encoding='utf-8')
        f2.write(lines)
        f2.close()

answered Oct 8, 2019 at 15:24

Aditya GaykarAditya Gaykar

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import org.apache.log4j.Logger;

public class Myclass{

private static final Logger LOGGER = Logger.getLogger(Myclass.class);

/**
 * Validate XML file against Schemas XSD in pathEsquema directory
 * @param pathEsquema directory that contains XSD Schemas to validate
 * @param pathFileXML XML file to validate
 * @throws BusinessException if it throws any Exception
 */
public static void validarXML(String pathEsquema, String pathFileXML) 
	throws BusinessException{	
	String W3C_XML_SCHEMA = "http://www.w3.org/2001/XMLSchema";
	String nameFileXSD = "file.xsd";
	String MY_SCHEMA1 = pathEsquema+nameFileXSD);
	ParserErrorHandler parserErrorHandler;
	try{
		SchemaFactory schemaFactory = SchemaFactory.newInstance(W3C_XML_SCHEMA);
		
		Source [] source = { 
			new StreamSource(new File(MY_SCHEMA1))
			};
		Schema schemaGrammar = schemaFactory.newSchema(source);

		Validator schemaValidator = schemaGrammar.newValidator();
		schemaValidator.setErrorHandler(
			parserErrorHandler= new ParserErrorHandler());
		
		/** validate xml instance against the grammar. */
		File file = new File(pathFileXML);
		InputStream isS= new FileInputStream(file);
		Reader reader = new InputStreamReader(isS,"UTF-8");
		schemaValidator.validate(new StreamSource(reader));
		
		if(parserErrorHandler.getErrorHandler().isEmpty()&& 
			parserErrorHandler.getFatalErrorHandler().isEmpty()){
			if(!parserErrorHandler.getWarningHandler().isEmpty()){
				LOGGER.info(
				String.format("WARNING validate XML:[%s] Descripcion:[%s]",
					pathFileXML,parserErrorHandler.getWarningHandler()));
			}else{
				LOGGER.info(
				String.format("OK validate  XML:[%s]",
					pathFileXML));
			}
		}else{
			throw new BusinessException(
				String.format("Error validate  XML:[%s], FatalError:[%s], Error:[%s]",
				pathFileXML,
				parserErrorHandler.getFatalErrorHandler(),
				parserErrorHandler.getErrorHandler()));
		}		
	}
	catch(SAXParseException e){
		throw new BusinessException(String.format("Error validate XML:[%s], SAXParseException:[%s]",
			pathFileXML,e.getMessage()),e);
	}
	catch (SAXException e){
		throw new BusinessException(String.format("Error validate XML:[%s], SAXException:[%s]",
			pathFileXML,e.getMessage()),e);
	}
	catch (IOException e) {
		throw new BusinessException(String.format("Error validate XML:[%s], 
			IOException:[%s]",pathFileXML,e.getMessage()),e);
	}
	
}

}

RodHRodH

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Set your document to form like this:

<?xml version="1.0" encoding="UTF-8" ?>
<root>
    %children%
</root>

answered Dec 27, 2017 at 11:19

Reaz MurshedReaz Murshed

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