difference b/w 'main method' and 'run on server'...

[ankur rathi]

Hi everybody,

This is really very serious problem for me. It is very common that a method takes file name as a string and do some processing. I also made a method that does the same. But the problem is when I run my program from main method it runs properly but When I run it on server (web environment) it throw FileNotFoundException because it searches file some where else (probably where the server is). I solved this problem with help of one of the ranchers (sorry, don't remember name!!), Now I am passing input stream to that method (did some modification in method) and I am preparing input stream from class loader (through getResourceAsStream() method), and its working fine in both the cases, because now it is searching file into folders that are in class path.

I hope I am clear till this point.

Now I have a written a method that validate XML against XSD:

 
                DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance();
factory.setValidating(true);
factory.setNamespaceAware(true);
factory.setAttribute(
"http://java.sun.com/xml/jaxp/properties/schemaLanguage",
"http://www.w3.org/2001/XMLSchema");
 
try {
DocumentBuilder builder = factory.newDocumentBuilder();
builder.setErrorHandler(new DefaultHandler() {
public void error(SAXParseException spe) throws SAXException {
throw spe;
}
});
 
builder.parse(this.getClass().getClassLoader().getResourceAsStream(xmlFileName));
 
} catch (Exception e) {
e.printStackTrace(); 
}
 

It takes XML file correctly because I am passing input stream that I am taking it through class loader.... problem is with XSD. I have no control on XSD. I mean, it takes XSD file name from XML, and searches XSD file from server folder (if I run program in web environment) and obviously not get XSD file and throw FileNotFoundException for XSD file. I am really confuse what should I do .

I hope problem is clear...

If there is some way where I can pass input stream for XSD also, then my problem may be solve...

Any help is really greatful.

Thanks a lot.
[ August 02, 2005: Message edited by: rathi ji ]

[Manzar Zaidi]

I would try geting a InputStream from a file passwing in the file argument like this.

File file=new File("http://DTDlocation.com/dtd.xml");
InputStream fis=new FileinputStream(file);

I can then use this stream for any practical purpose.

[ankur rathi]

Originally posted by Saiyed Zaidi:
I would try geting a InputStream from a file passwing in the file argument like this.

File file=new File("http://DTDlocation.com/dtd.xml");
InputStream fis=new FileinputStream(file);

I can then use this stream for any practical purpose.

You are not getting my question, please read my post again.
Thanks.

[Pradeep bhatt]

Originally posted by rathi ji:


You are not getting my question, please read my post again.
Thanks.

Not sure whether I have understood the question. Why dont you put the XSD file name as a servlet config parameter in web.xml ? This will make sure that any name can be given for the XSD?

[ankur rathi]

Thanks Pradip. You are right. I tried this code also..

                String nameSpaceSchemaLocation =
"http://apache.org/xml/properties/schema/external-noNamespaceSchemaLocation";
SAXBuilder builder =
new SAXBuilder("org.apache.xerces.parsers.SAXParser", true);
builder.setFeature(
"http://apache.org/xml/features/validation/schema",
true);

builder.setProperty(nameSpaceSchemaLocation, xsdFileName);
 
try {
builder.build(this.getClass().getClassLoader().getResourceAsStream(xmlFileName));
} catch (MException e) {
e.printStackTrace();
} 
 

so that I can specify XSD file myself instead of validator takes it from XML file. In this case I am facing two problems:

1]

                builder.setFeature(
"http://apache.org/xml/features/validation/schema",
true);
 

This gives error. I am not able to understand why because error comes only in case of web environment.

2] When I run it through 'main method' (In web environment it gives above error), it needs absolute path of XSD that I can't be sure.


Still confuse what to do??

Please help...

Thanks a lot.
[ August 02, 2005: Message edited by: rathi ji ]

[Pradeep bhatt]

This may be helpful

http://www.xml.com/pub/a/2005/07/06/jaxp.html?page=2

This requires JAXP 1.3.