extracterrorlistener.java

Heritrix是一个开源,可扩展的web爬虫项目。Heritrix设计成严格按照robots.txt文件的排除指示和META robots标签。

/* ExtractErrorListener
*
* $Id: ExtractErrorListener.java 3704 2005-07-18 17:30:21Z stack-sf $
*
* Created on Mar 17, 2005
*
* Copyright (C) 2005 Internet Archive.
*
* This file is part of the Heritrix web crawler (crawler.archive.org).
*
* Heritrix is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser Public License as published by
* the Free Software Foundation; either version 2.1 of the License, or
* any later version.
*
* Heritrix is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
* GNU Lesser Public License for more details.
*
* You should have received a copy of the GNU Lesser Public License
* along with Heritrix; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
*/
package org.archive.extractor;

import java.io.IOException;

import org.archive.net.UURI;

/**
 * ExtractErrorListener receives exceptions that may need to be logged
 * from inside a LinkExtractor, allowing the extraction to continue 
 * without raising an exception through hasNext()/next()/nextLink().
 *
 * @author gojomo
 */
public interface ExtractErrorListener {
    /**
     * Callback to report an extraction error.
     * 
     * @param ex
     * @param source
     * @param context
     */
    public void noteExtractError(IOException ex, UURI source, CharSequence context);
}