java显示PDF：将PDF文件转换成图片，然后显示出来

import javax.swing.*; import javax.swing.text.BadLocationException; import javax.swing.text.SimpleAttributeSet; import javax.swing.text.StyledDocument; import java.awt.*; import java.awt.image.BufferedImage; import java.util.List; public class BrowserPDFDocumentFrame extends JFrame { JTextPane editTextAndImageArea; public void appendSomeImageToJTextPane(List<BufferedImage>bufferedImageList){ SimpleAttributeSet documentSimpleAttributeSet = new SimpleAttributeSet(); StyledDocument styledDocumentObject = this.editTextAndImageArea.getStyledDocument(); for (BufferedImage bufferedImage : bufferedImageList) { this.editTextAndImageArea.setCaretPosition(styledDocumentObject.getLength()); this.editTextAndImageArea.insertIcon(new ImageIcon(bufferedImage)); try { styledDocumentObject.insertString(styledDocumentObject.getLength(), "\n\r", documentSimpleAttributeSet); } catch (BadLocationException e) { e.printStackTrace(); } } } private void createAndinitJTextPane(String orignalPdfFilename){ this.editTextAndImageArea = new JTextPane(); JScrollPane oneJScrollPane = new JScrollPane( this.editTextAndImageArea, JScrollPane.VERTICAL_SCROLLBAR_AS_NEEDED, JScrollPane.HORIZONTAL_SCROLLBAR_AS_NEEDED ); //editTextAndImageArea.setSize(500,400); this.getContentPane().add(oneJScrollPane,BorderLayout.CENTER); //String orignalPdfFilename = "d:/体检注意事项.pdf"; float rotaionAngle = 0.0f; //转动角度，0 不旋转 /* * pdf放大参数（转成图片后对图片的放大倍数，也就是转换后的图片尺寸为原始pdf页尺寸的倍数， * 默认1.0,（不放大），放大有可能会影响清晰度 * */ float scaleFactors = 1.2f;//放大1.2倍 //调用转换方法，并获取最终转换后的各个图片的文件名列表信息 PDFDocumentToImageByICEpdf onePDFToJpegImagePictureByICEpdf= new PDFDocumentToImageByICEpdf(); List<BufferedImage> resultBufferedImageList = onePDFToJpegImagePictureByICEpdf.pdfToImage_BufferedImageList( orignalPdfFilename, rotaionAngle, scaleFactors ); appendSomeImageToJTextPane(resultBufferedImageList); } private void initThisMainFrame(String frameTitleText,String orignalPdfFilename){ this.setTitle(frameTitleText); createAndinitJTextPane(orignalPdfFilename); this.setSize(800,500); //this.pack(); //this.setExtendedState(JFrame.MAXIMIZED_BOTH);//水平垂直方向都最大化 this.setLocationRelativeTo(null);//居中 this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); } public BrowserPDFDocumentFrame(String frameTileText,String orignalPdfFilename){ super(frameTileText); initThisMainFrame(frameTileText,orignalPdfFilename); } }