📄 pdfhighlighter.java

📁 非常有用的操作pdf文件的java源码
💻 JAVA
字号:
/**
 * Copyright (c) 2006, www.pdfbox.org
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice,
 *    this list of conditions and the following disclaimer.
 * 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. Neither the name of pdfbox; nor the names of its
 *    contributors may be used to endorse or promote products derived from this
 *    software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS 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 THE REGENTS OR 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.
 *
 * http://www.pdfbox.org
 *
 */
package org.pdfbox.util;

import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.Writer;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

import org.pdfbox.pdmodel.PDDocument;
import org.pdfbox.pdmodel.PDPage;


/**
 * Highlighting of words in a PDF document with an XML file.
 * 
 * @author slagraulet (slagraulet@cardiweb.com)
 * @author <a href="mailto:ben@benlitchfield.com">Ben Litchfield</a>
 * @version $Revision: 1.7 $
 * 
 * @see <a href="http://partners.adobe.com/public/developer/en/pdf/HighlightFileFormat.pdf">
 *      Adobe Highlight File Format</a>
 */
public class PDFHighlighter extends PDFTextStripper 
{
    private Writer highlighterOutput = null;
    //private Color highlightColor = Color.YELLOW;

    private String[] searchedWords;
    private ByteArrayOutputStream textOS = null;
    private Writer textWriter = null;

    /**
     * Default constructor.
     * 
     * @throws IOException If there is an error constructing this class.
     */
    public PDFHighlighter() throws IOException 
    {
        super();
        super.setLineSeparator( "" );
        super.setPageSeparator( "" );
        super.setWordSeparator( "" );
        super.setShouldSeparateByBeads( false );
        super.setSuppressDuplicateOverlappingText( false );
    }
    
    /**
     * Generate an XML highlight string based on the PDF.
     * 
     * @param pdDocument The PDF to find words in.
     * @param highlightWord The word to search for.
     * @param xmlOutput The resulting output xml file.
     * 
     * @throws IOException If there is an error reading from the PDF, or writing to the XML.
     */
    public void generateXMLHighlight(PDDocument pdDocument, String highlightWord, Writer xmlOutput ) throws IOException
    {
        generateXMLHighlight( pdDocument, new String[] { highlightWord }, xmlOutput );
    }

    /**
     * Generate an XML highlight string based on the PDF.
     * 
     * @param pdDocument The PDF to find words in.
     * @param sWords The words to search for.
     * @param xmlOutput The resulting output xml file.
     * 
     * @throws IOException If there is an error reading from the PDF, or writing to the XML.
     */
    public void generateXMLHighlight(PDDocument pdDocument, String[] sWords, Writer xmlOutput ) throws IOException
    {
        highlighterOutput = xmlOutput;
        searchedWords = sWords;
        highlighterOutput.write("<XML>\n<Body units=characters " + 
                                //color and mode are not implemented by the highlight spec
                                //so don't include them for now
                                //" color=#" + getHighlightColorAsString() + 
                                //" mode=active " + */ 
                                " version=2>\n<Highlight>\n");
        textOS = new ByteArrayOutputStream();
        textWriter = new OutputStreamWriter( textOS, "UTF-16" );
        writeText(pdDocument, textWriter);
        highlighterOutput.write("</Highlight>\n</Body>\n</XML>");
        highlighterOutput.flush();
    }

    /**
     * {@inheritDoc}
     */
    protected void endPage( PDPage pdPage ) throws IOException 
    {
        textWriter.flush();

        String page = new String( textOS.toByteArray(), "UTF-16" );
        textOS.reset();
        //page = page.replaceAll( "\n", "" );
        //page = page.replaceAll( "\r", "" );
        //page = CCRStringUtil.stripChar(page, '\n');
        //page = CCRStringUtil.stripChar(page, '\r');

        // Traitement des listes
⌨️ 快捷键说明

复制代码 Ctrl + C
搜索代码 Ctrl + F
全屏模式 F11
切换主题 Ctrl + Shift + D
显示快捷键 ?
增大字号 Ctrl + =
减小字号 Ctrl + -