怎样使用PDFBox中的PDFToImage？急啊

Question

本人一新手，初次在Netbeans6.5中使用PDFBox
在PDFBox的官网上看到它的特性里有这么一条：“Create images from PDF pages”，看了http://incubator.apache.org/pdfbox/commandlineutilities/PDFToImage.html一点都没弄清楚应该怎样使用这一特性请各位高手帮帮忙，小弟现在很急！
万分感谢！

Answer 1

直接向classpath种设定PDFBox的lib就可以了。

Answer 2

谢谢这位大哥，已经添加了lib小弟只是不知道用什么样的代码实现这一功能

Answer 3

package org.apache.pdfbox;import javax.imageio.ImageIO;import org.apache.pdfbox.exceptions.InvalidPasswordException;import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.util.PDFImageWriter;public class PDFToImage{    private static final String PASSWORD = "-password";
    private static final String START_PAGE = "-startPage";
    private static final String END_PAGE = "-endPage";
    private static final String IMAGE_TYPE = "-imageType";
    private static final String OUTPUT_PREFIX = "-outputPrefix";    private PDFToImage(){    }    public static void main( String[] args ) throws Exception {
        String password = "";
        String pdfFile = "c:/HelloWorld.pdf";
        String outputPrefix = "d:/1/";
        String outputfilename=null;
        String imageType = "jpg";
        int startPage = 1;
        int endPage = Integer.MAX_VALUE;
        for( int i=0; i<args.length; i++ ){
            if( args[i].equals( PASSWORD ) ){
                i++;
                if( i >= args.length ){
                    usage();
                }
                password = args[i];
            }else if( args[i].equals( START_PAGE ) ){
                i++;
                if( i >= args.length ){
                    usage();
                }
                startPage = Integer.parseInt( args[i] );
            } else if( args[i].equals( END_PAGE ) ){
                i++;
                if( i >= args.length ){
                    usage();
                }
                endPage = Integer.parseInt( args[i] );
            }else if( args[i].equals( IMAGE_TYPE ) ){
                i++;
                imageType = args[i];
            }else if( args[i].equals( OUTPUT_PREFIX ) ){
                i++;
                outputPrefix = args[i];
            }else{
                if( pdfFile == null ){
                    pdfFile = args[i];
                }
            }
        }        if( pdfFile == null ) {
            usage();
        }else{
            if(outputPrefix == null){
                outputPrefix = pdfFile.substring( 0, pdfFile.lastIndexOf( '.' ));
            }
            outputfilename = pdfFile.substring( pdfFile.lastIndexOf("/"),pdfFile.lastIndexOf( '.' ));
            PDDocument document = null;
            try{
                document = PDDocument.load( pdfFile );
                //document.print();
                if( document.isEncrypted() ){
                    try{
                        document.decrypt( password );
                    }catch( InvalidPasswordException e ){
                        if( args.length == 4 ){//they supplied the wrong password
                            System.err.println( "Error: The supplied password is incorrect." );
                            System.exit( 2 );
                        }else{
                            //they didn't suppply a password and the default of "" was wrong.
                            System.err.println( "Error: The document is encrypted." );
                            usage();
                        }
                    }
                } //Make the call
PDFImageWriter W = new PDFImageWriter();
W.WriteImage(document, imageType, password, startPage, endPage, outputPrefix,outputfilename);
    } catch(Exception e){
    System.err.println( e);
    }finally{
if( document != null ){
    document.close();
}
}
    }
    }    /**
     * This will print the usage requirements and exit.
     */
    private static void usage() {
        System.err.println( "Usage: java org.apache.pdfbox.PDFToImage [OPTIONS] <PDF file>\n" +
            "  -password  <password>          Password to decrypt document\n" +
            "  -imageType <image type>        (" + getImageFormats() + ")\n" +
            "  -outputPrefix <output prefix>  Filename prefix for image files\n" +
            "  -startPage <number>          The first page to start extraction(1 based)\n" +
            "  -endPage <number>            The last page to extract(inclusive)\n" +
            "  <PDF file>                   The PDF document to use\n"
            );
        System.exit( 1 );
    }    private static String getImageFormats(){
        StringBuffer retval = new StringBuffer();
        String[] formats = ImageIO.getReaderFormatNames();
        for( int i=0; i<formats.length; i++ ){
            retval.append( formats[i] );
            if( i+1<formats.length ){
                retval.append( "," );
            }
        }
        return retval.toString();
    }
}

Answer 4

楼上的我的pdfbox怎么没有PDFImageWriter这个类啊 

Answer 5

pdfbox0.8以后的版本(包含0.8)才有PDFImageWriter这个类，以前版本是不包含这个类的