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location of xsd file

 
Ranch Hand
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I'm reading a XML message string from a queue of Websphere MQ and the XML string contains something like:
<myRoot TransactionId="1" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="mySchema.xsd">
.....
</myRoot>
When I parse the XML string to DOM, I set the parser to validate the XML in
following way:
DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setValidating(true);
DocumentBuilder builder = factory.newDocumentBuilder();
builder.setErrorHandler(new DefaultHandler());
Document dom = builder.parse(new InputSource(new StringReader(xmlString)));
I got following error when the program runs:
org.xml.sax.SAXException: Parsing Error
Line: 2
URI: null
Message: Element type "myRoot" must be declared.
I think it is because that parser could not find mySchema.xsd file. Where should I put mySchema.xsd file? Thanks.
 
author
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I really have no idea whether this could work but try DocumentBuilder#setEntityResolver(new MySchemaFileResolver())
 
Greenhorn
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The schemaLocation has to be an absolute path. Since in your example you have just mentioned the file name for schemaLocation, try using the method "public Document parse(java.io.InputStream is,java.lang.String systemId)" on the DocumentBuilder where systemId is the base for resolving relative path. Also, in case you are not aware, you could try setting the attribute "http://java.sun.com/xml/jaxp/properties/schemaSource" on DocumentBuilderFactory to the schemaLocation before getting the DocumentBuilder instance. Hope that helps.
[ November 14, 2003: Message edited by: S K K Kumar ]
 
Greenhorn
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I am unable to get this to work if the schema is inside a jar file. Is there a way to point to a schema inside a jar file and have it work?
 
Lasse Koskela
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You could try Class#getResource(String) to get a URL to the schema file inside your .jar, and then use the path given by URL#getFile()
 
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