I wrote a simple java-main that does the job and changes the link to the relative URL
package dl; import java.io.ByteArrayInputStream; import java.io.File; import java.io.FileOutputStream; import java.io.InputStream; import java.net.Authenticator; import java.net.PasswordAuthentication; import java.net.URI; import java.net.URL; import java.util.ArrayList; import java.util.HashMap; import java.util.HashSet; import java.util.List; import java.util.Map; import java.util.Scanner; import java.util.Set; import javax.xml.parsers.DocumentBuilder; import javax.xml.parsers.DocumentBuilderFactory; import javax.xml.xpath.XPath; import javax.xml.xpath.XPathConstants; import javax.xml.xpath.XPathExpression; import javax.xml.xpath.XPathFactory; import org.w3c.dom.Document; import org.w3c.dom.Node; import org.w3c.dom.NodeList; public class SchemaPersister { private static final String EXPORT_FILESYSTEM_ROOT = "C:/export/xsd"; // some caching of the http-responses private static Map<String,String> _httpContentCache = new HashMap<String,String>(); public static void main(String[] args) { try { new SchemaPersister().doIt(); } catch (Exception e) { // TODO Auto-generated catch block e.printStackTrace(); } } private void doIt() throws Exception { // // if you need an inouse-Proxy // final String authUser = "xxxxx"; // final String authPassword = "xxxx" // // System.setProperty("http.proxyHost", "xxxxx"); // System.setProperty("http.proxyPort", "xxxx"); // System.setProperty("http.proxyUser", authUser); // System.setProperty("http.proxyPassword", authPassword); // // Authenticator.setDefault( // new Authenticator() { // public PasswordAuthentication getPasswordAuthentication() { // return new PasswordAuthentication(authUser, authPassword.toCharArray()); // } // } // ); // Set <SchemaElement> allElements = new HashSet<SchemaElement>() ; // URL url = new URL("file:/C:/xauslaender-nachrichten-administration.xsd"); URL url = new URL("http://www.osci.de/xauslaender141/xauslaender-nachrichten-bamf-abh.xsd"); allElements.add ( new SchemaElement(url)); for (SchemaElement e: allElements) { System.out.println("processing " + e); e.doAll(); } System.out.println("done!"); } class SchemaElement { private URL _url; private String _content; public List <SchemaElement> _imports ; public List <SchemaElement> _includes ; public SchemaElement(URL url) { this._url = url; } public void checkIncludesAndImportsRecursive() throws Exception { InputStream in = new ByteArrayInputStream(downloadContent() .getBytes("UTF-8")); DocumentBuilderFactory factory = DocumentBuilderFactory.newInstance(); DocumentBuilder builder = factory.newDocumentBuilder(); Document doc = builder.parse(in); List<Node> includeNodeList = null; List<Node> importNodeList = null; includeNodeList = getXpathAttribute(doc,"/*[local-name()='schema']/*[local-name()='include']"); _includes = new ArrayList <SchemaElement> (); for ( Node element: includeNodeList) { Node sl = element.getAttributes().getNamedItem("schemaLocation"); if (sl == null) { System.out.println(_url + " defines one import but no schemaLocation"); continue; } String asStringAttribute = sl.getNodeValue(); URL url = buildUrl(asStringAttribute,_url); SchemaElement tmp = new SchemaElement(url); tmp.setSchemaLocation(asStringAttribute); tmp.checkIncludesAndImportsRecursive(); _includes.add(tmp); } importNodeList = getXpathAttribute(doc,"/*[local-name()='schema']/*[local-name()='import']"); _imports = new ArrayList <SchemaElement> (); for ( Node element: importNodeList) { Node sl = element.getAttributes().getNamedItem("schemaLocation"); if (sl == null) { System.out.println(_url + " defines one import but no schemaLocation"); continue; } String asStringAttribute = sl.getNodeValue(); URL url = buildUrl(asStringAttribute,_url); SchemaElement tmp = new SchemaElement(url); tmp.setSchemaLocation(asStringAttribute); tmp.checkIncludesAndImportsRecursive(); _imports.add(tmp); } in.close(); } private String schemaLocation; private void setSchemaLocation(String schemaLocation) { this.schemaLocation = schemaLocation; } // http://stackoverflow.com/questions/10159186/how-to-get-parent-url-in-java private URL buildUrl(String asStringAttribute, URL parent) throws Exception { if (asStringAttribute.startsWith("http")) { return new URL(asStringAttribute); } if (asStringAttribute.startsWith("file")) { return new URL(asStringAttribute); } // relative URL URI parentUri = parent.toURI().getPath().endsWith("/") ? parent.toURI().resolve("..") : parent.toURI().resolve("."); return new URL(parentUri.toURL().toString() + asStringAttribute ); } public void doAll() throws Exception { System.out.println("READ ELEMENTS"); checkIncludesAndImportsRecursive(); System.out.println("PRINTING DEPENDENCYS"); printRecursive(0); System.out.println("GENERATE OUTPUT"); patchAndPersistRecursive(0); } public void patchAndPersistRecursive(int level) throws Exception { File f = new File(EXPORT_FILESYSTEM_ROOT + File.separator + this.getXDSName() ); System.out.println("FILENAME: " + f.getAbsolutePath()); if (_imports.size() > 0) { for (int i = 0; i < level; i++) { System.out.print(" "); } System.out.println("IMPORTS"); for (SchemaElement kid : _imports) { kid.patchAndPersistRecursive(level+1); } } if (_includes.size() > 0) { for (int i = 0; i < level; i++) { System.out.print(" "); } System.out.println("INCLUDES"); for (SchemaElement kid : _includes) { kid.patchAndPersistRecursive(level+1); } } String contentTemp = downloadContent(); for (SchemaElement i : _imports ) { if (i.isHTTP()) { contentTemp = contentTemp.replace( "<xs:import schemaLocation=\"" + i.getSchemaLocation() , "<xs:import schemaLocation=\"" + i.getXDSName() ); } } for (SchemaElement i : _includes ) { if (i.isHTTP()) { contentTemp = contentTemp.replace( "<xs:include schemaLocation=\"" + i.getSchemaLocation(), "<xs:include schemaLocation=\"" + i.getXDSName() ); } } FileOutputStream fos = new FileOutputStream(f); fos.write(contentTemp.getBytes("UTF-8")); fos.close(); System.out.println("File written: " + f.getAbsolutePath() ); } public void printRecursive(int level) { for (int i = 0; i < level; i++) { System.out.print(" "); } System.out.println(_url.toString()); if (this._imports.size() > 0) { for (int i = 0; i < level; i++) { System.out.print(" "); } System.out.println("IMPORTS"); for (SchemaElement kid : this._imports) { kid.printRecursive(level+1); } } if (this._includes.size() > 0) { for (int i = 0; i < level; i++) { System.out.print(" "); } System.out.println("INCLUDES"); for (SchemaElement kid : this._includes) { kid.printRecursive(level+1); } } } String getSchemaLocation() { return schemaLocation; } /** * removes html:// and replaces / with _ * @return */ private String getXDSName() { String tmp = schemaLocation; // Root on local File-System -- just grap the last part of it if (tmp == null) { tmp = _url.toString().replaceFirst(".*/([^/?]+).*", "$1"); } if ( isHTTP() ) { tmp = tmp.replace("http://", ""); tmp = tmp.replace("/", "_"); } else { tmp = tmp.replace("/", "_"); tmp = tmp.replace("\\", "_"); } return tmp; } private boolean isHTTP() { return _url.getProtocol().startsWith("http"); } private String downloadContent() throws Exception { if (_content == null) { System.out.println("reading content from " + _url.toString()); if (_httpContentCache.containsKey(_url.toString())) { this._content = _httpContentCache.get(_url.toString()); System.out.println("Cache hit! " + _url.toString()); } else { System.out.println("Download " + _url.toString()); Scanner scan = new Scanner(_url.openStream(), "UTF-8"); if (isHTTP()) { this._content = scan.useDelimiter("\\A").next(); } else { this._content = scan.useDelimiter("\\Z").next(); } scan.close(); if (this._content != null) { _httpContentCache.put(_url.toString(), this._content); } } } if (_content == null) { throw new NullPointerException("Content of " + _url.toString() + "is null "); } return _content; } private List<Node> getXpathAttribute(Document doc, String path) throws Exception { List <Node> returnList = new ArrayList <Node> (); XPathFactory xPathfactory = XPathFactory.newInstance(); XPath xpath = xPathfactory.newXPath(); { XPathExpression expr = xpath.compile(path); NodeList nodeList = (NodeList) expr.evaluate(doc, XPathConstants.NODESET ); for (int i = 0 ; i < nodeList.getLength(); i++) { Node n = nodeList.item(i); returnList.add(n); } } return returnList; } @Override public String toString() { if (_url != null) { return _url.toString(); } return super.toString(); } } }