java 多个单页的tif文件合并成一个多页的tif文件

电玩女神 2023-02-08 14:28 78阅读 0赞

## maven依赖 ##

<dependency>
                <groupId>com.sun.media</groupId>
                <artifactId>jai_codec</artifactId>
                <version>1.1-mr</version>
            </dependency>

或者

<dependency>
                <groupId>com.sun</groupId>
                <artifactId>jai_codec</artifactId>
                <version>1.1.3</version>
            </dependency>

## 实现方法 ##

/** * tif合并 * @Author chenqi * @Date 14:46 2020/8/6 * @param bytes * @return byte[] **/
        public static byte[] margerTif(List<byte[]> bytes){ 
            ByteArrayInputStream bin = null;
            List<BufferedImage> images = new ArrayList<>();
            for(byte[] b : bytes) { 
                try { 
                    bin = new ByteArrayInputStream(b);
                    BufferedImage image = ImageIO.read(bin);
                    images.add(image);
                    bin.close();
                }catch (Exception e) { 
                    e.printStackTrace();
                }
            }
    
            ByteArrayOutputStream out = new ByteArrayOutputStream(OmsConstants.Number.ONE_MB);
            try{ 
                TIFFEncodeParam params = new TIFFEncodeParam();
                params.setCompression(TIFFEncodeParam.COMPRESSION_JPEG_TTN2);
                ImageEncoder encoder = ImageCodec.createImageEncoder("tiff", out, params);
                List<BufferedImage> imageList = new ArrayList<>();
                for (int i = 1; i < images.size(); i++){ 
                    imageList.add(images.get(i));
                }
                params.setExtraImages(imageList.iterator());
                encoder.encode(images.get(0));
            }catch (Exception e){ 
                e.printStackTrace();
            }finally { 
                try { 
                    out.close();
                } catch (IOException e) { 
                    e.printStackTrace();
                }
            }
            return out.toByteArray();
        }

## 测试方法 ##

public static void main(String[] args) { 
            File file1 = new File("D:/TIF/1.tif");
            File file2 = new File("D:/TIF/2.tif");
            File file3 = new File("D:/TIF/3.tif");
            try { 
                List<byte[]> list = new ArrayList<>();
                list.add(Files.readAllBytes(file1.toPath()));
                list.add(Files.readAllBytes(file2.toPath()));
                list.add(Files.readAllBytes(file3.toPath()));
                byte[] b = MesFileUtil.margerTif(list);
                FileOutputStream ou = new FileOutputStream(new File("D:/PDF/123.tif"));
                ou.write(b);
                ou.flush();
            }catch (Exception e){ 
                e.printStackTrace();
            }
        }

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