使用pdfbox解析pdf文档信息(属性，内容，图片)

墨蓝 2022-08-21 13:50 414阅读 0赞

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;  
        }  
    
    
    }