Read Xml from InputStream and return Document : XML Reader « XML « Java Tutorial






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 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements. See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership. The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

import java.io.IOException;
import java.io.InputStream;
import java.io.StringReader;

import javax.xml.parsers.DocumentBuilder;
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException;
import javax.xml.transform.stream.StreamSource;

import org.w3c.dom.Document;
import org.xml.sax.EntityResolver;
import org.xml.sax.InputSource;
import org.xml.sax.SAXException;

/**
 * Few simple utils to read DOM. This is originally from the Jakarta Commons
 * Modeler.
 * 
 * @author Costin Manolache
 */
public class Utils {
  /**
   * Read XML as DOM.
   */
  public static Document readXml(InputStream is) throws SAXException, IOException,
      ParserConfigurationException {
      DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();

      dbf.setValidating(false);
      dbf.setIgnoringComments(false);
      dbf.setIgnoringElementContentWhitespace(true);
      dbf.setNamespaceAware(true);
      // dbf.setCoalescing(true);
      // dbf.setExpandEntityReferences(true);

      DocumentBuilder db = null;
      db = dbf.newDocumentBuilder();
      db.setEntityResolver(new NullResolver());

      // db.setErrorHandler( new MyErrorHandler());

      return db.parse(is);
  }
}

class NullResolver implements EntityResolver {
  public InputSource resolveEntity(String publicId, String systemId) throws SAXException,
      IOException {
    return new InputSource(new StringReader(""));
  }
}








33.30.XML Reader
33.30.1.Read Xml from InputStream and return Document
33.30.2.Read Xml from Reader and return Document
33.30.3.Sniffed Xml Reader
33.30.4.Xml Reader To Writer
33.30.5.Xml Encoding Sniffer
33.30.6.Sniffed Xml InputStream to find out the declaration and file encoding