java.net.MalformedURLException: no protocol: [c:\XML\file.xml, c:\XML\file2.xml, c:\XML\file3.xml]

Question

I get the below error when trying to update an array of xml files.

Snippet if code:

File dir = new File("c:\\XML");

File[] files = dir.listFiles(new FilenameFilter() {

    public boolean accept(File dir, String name) {
        return name.toLowerCase().endsWith(".xml");
    }
});

DocumentBuilderFactory docFactory = DocumentBuilderFactory.newInstance();
DocumentBuilder docBuilder = docFactory.newDocumentBuilder();
Document doc = docBuilder.parse(Arrays.toString(files));

ERROR:

java.net.MalformedURLException: no protocol: [c:\XML\file.xml, c:\XML\file2.xml, c:\XML\file3.xml]

Can someone please point me in the right direction?

Thanks a lot,

Adam

ifloop · Accepted Answer · 2014-04-10 11:41:29Z

1

You have to pass your file array's indices one by one to Document#parse() e.g.:

Document doc = docBuilder.parse(files[0]);

You can loop this:

for (File f : files) {
    Document doc = docBuilder.parse(f);

    // do something with the doc
}

edited Apr 10, 2014 at 11:41

answered Apr 10, 2014 at 11:32

ifloop

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user2881767 · Accepted Answer · 2014-04-10 11:36:43Z

0

DocumentBuilder.parse accepts as argument a File object, a String containing path to file or URI.

In the above code snippet you are passing an array, You have to modify code as follows:

Document doc = docBuilder.parse(files[i])

And call this recursively setting the value of i based on the size of array files.

answered Apr 10, 2014 at 11:36

user2881767

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Hauke Ingmar Schmidt · Accepted Answer · 2014-04-10 11:37:40Z

0

Document doc = docBuilder.parse(Arrays.toString(files));

You convert an array of Files to a single String.

[c:\XML\file.xml, c:\XML\file2.xml, c:\XML\file3.xml]

This is the representation you get.

DocumentBuilder#parse doesn't know how to parse several documents at once, and why should it know such a notation for a series of filenames?

You need to iterate over the files:

List<Document> docs = new LinkedList<Document>();
for (File aFile: files) {
    docs.add(docBuilder.parse(files[i].getName())); // Or do something different
}

answered Apr 10, 2014 at 11:37

Hauke Ingmar Schmidt

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