trimxmlfilter.java

解决如何把XML应用到JAVA里问题

/*
 * Copyright 2001-2004 (C) MetaStuff, Ltd. All Rights Reserved.
 * 
 * This software is open source. 
 * See the bottom of this file for the licence.
 * 
 * $Id: TrimXMLFilter.java,v 1.4 2005/01/29 14:53:14 maartenc Exp $
 */

package org.dom4j.samples.sax;

import org.xml.sax.SAXException;
import org.xml.sax.helpers.XMLFilterImpl;

/**
 * An example XMLFilter which trims all text content, removing whitespace
 * 
 * @author <a href="mailto:[e-mail]">James Strachan </a>
 * @version $Revision: 1.4 $
 */
public class TrimXMLFilter extends XMLFilterImpl {

    public TrimXMLFilter() {
    }

    public void characters(char[] ch, int start, int length)
            throws SAXException {
        int last = start + length;
        while (start < last && Character.isWhitespace(ch[start])) {
            start++;
            length--;
        }
        while (length > 0 && Character.isWhitespace(ch[start + length - 1])) {
            length--;
        }
        if (length > 0) {
            super.characters(ch, start, length);
        }
    }

    public void ignorableWhitespace(char[] ch, int start, int length)
            throws SAXException {
    }
}

/*
 * Redistribution and use of this software and associated documentation
 * ("Software"), with or without modification, are permitted provided that the
 * following conditions are met:
 * 
 * 1. Redistributions of source code must retain copyright statements and
 * notices. Redistributions must also contain a copy of this document.
 * 
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 * this list of conditions and the following disclaimer in the documentation
 * and/or other materials provided with the distribution.
 * 
 * 3. The name "DOM4J" must not be used to endorse or promote products derived
 * from this Software without prior written permission of MetaStuff, Ltd. For
 * written permission, please contact [e-mail].
 * 
 * 4. Products derived from this Software may not be called "DOM4J" nor may
 * "DOM4J" appear in their names without prior written permission of MetaStuff,
 * Ltd. DOM4J is a registered trademark of MetaStuff, Ltd.
 * 
 * 5. Due credit should be given to the DOM4J Project - http://www.dom4j.org
 * 
 * THIS SOFTWARE IS PROVIDED BY METASTUFF, LTD. AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL METASTUFF, LTD. OR ITS CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
 * POSSIBILITY OF SUCH DAMAGE.
 * 
 * Copyright 2001-2004 (C) MetaStuff, Ltd. All Rights Reserved.
 * 
 * $Id: TrimXMLFilter.java,v 1.4 2005/01/29 14:53:14 maartenc Exp $
 */