使用pdfbox解析pdf文档信息(属性，内容，图片)

package parse;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import java.text.SimpleDateFormat;
import java.util.Calendar;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.apache.pdfbox.pdmodel.PDDocument;
import org.apache.pdfbox.pdmodel.PDDocumentCatalog;
import org.apache.pdfbox.pdmodel.PDDocumentInformation;
import org.apache.pdfbox.pdmodel.PDPage;
import org.apache.pdfbox.pdmodel.PDResources;
import org.apache.pdfbox.pdmodel.graphics.xobject.PDXObjectImage;
import org.apache.pdfbox.util.PDFTextStripper;

/**
* 使用 pdfbox 解析pdf 文档信息
* @author longhuiping
*
*/
public class PDFParse {

public static final String DATE_FORMAT = "yyyy-MM-dd HH:mm:ss";
public static void main(String[] args) throws Exception {
PDFParse p = new PDFParse();
String pdfPath="E:\\上海项目测试\\文档\\35.pdf";
String imgSavePath="E:\\上海项目测试\\pdfImage\\";
pdfParse(pdfPath, imgSavePath);
}

/**
* 解析pdf文档信息
* @param pdfPath   pdf文档路径
* @throws Exception
*/
public static void pdfParse( String pdfPath, String imgSavePath ) throws Exception
{
InputStream input = null;
File pdfFile = new File( pdfPath );
PDDocument document = null;
try{
input = new FileInputStream( pdfFile );
//加载 pdf 文档
document = PDDocument.load( input );

/** 文档属性信息 **/
PDDocumentInformation info = document.getDocumentInformation();
System.out.println( "标题:" + info.getTitle() );
System.out.println( "主题:" + info.getSubject() );
System.out.println( "作者:" + info.getAuthor() );
System.out.println( "关键字:" + info.getKeywords() );

System.out.println( "应用程序:" + info.getCreator() );
System.out.println( "pdf 制作程序:" + info.getProducer() );

System.out.println( "作者:" + info.getTrapped() );

System.out.println( "创建时间:" + dateFormat( info.getCreationDate() ));
System.out.println( "修改时间:" + dateFormat( info.getModificationDate()));

//获取内容信息
PDFTextStripper pts = new PDFTextStripper();
String content = pts.getText( document );
System.out.println( "内容:" + content );

/** 文档页面信息 **/
PDDocumentCatalog cata = document.getDocumentCatalog();
List pages = cata.getAllPages();
int count = 1;
for( int i = 0; i < pages.size(); i++ )
{
PDPage page = ( PDPage ) pages.get( i );
if( null != page )
{
PDResources res = page.findResources();

//获取页面图片信息
Map imgs = res.getImages();
if( null != imgs )
{
Set keySet = imgs.keySet();
Iterator it = keySet.iterator();
while( it.hasNext() )
{
Object obj =  it.next();
PDXObjectImage img = ( PDXObjectImage ) imgs.get( obj );
img.write2file( imgSavePath + count );
count++;
}
}
}
}
}catch( Exception e)
{
throw e;
}finally{
if( null != input )
input.close();
if( null != document )
document.close();
}
}

/**
* 获取格式化后的时间信息
* @param dar   时间信息
* @return
* @throws Exception
*/
public static String dateFormat( Calendar calendar ) throws Exception
{
if( null == calendar )
return null;
String date = null;
try{
String pattern = DATE_FORMAT;
SimpleDateFormat format = new SimpleDateFormat( pattern );
date = format.format( calendar.getTime() );
}catch( Exception e )
{
throw e;
}
return date == null ? "" : date;
}

}