<dependencies>
 <dependency>
    <groupId>com.sun.media</groupId>
    <artifactId>jai-codec</artifactId>
    <version>1.1.3</version>
</dependency>
  </dependencies>
  <repositories>
	  <repository>
	    <id>mvnrepository</id>
	    <name>mvnrepository</name>
	    <url>https://repository.jboss.org/maven2/</url>
	 </repository>
  </repositories>

package com.zx.tool.tif;
import java.io.File;
import java.io.FileOutputStream;
import java.io.OutputStream;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import javax.media.jai.JAI;
import javax.media.jai.PlanarImage;
import com.sun.media.jai.codec.FileSeekableStream;
import com.sun.media.jai.codec.ImageCodec;
import com.sun.media.jai.codec.ImageEncoder;
import com.sun.media.jai.codec.TIFFEncodeParam;
import com.sun.media.jai.codec.TIFFField;
/**
 * 	多張單頁tif文件合并成一張多頁tif文件
 * @author xiang
 *
 */
public class MergeTif {
	public static void main(String[] args) throws Exception {
		merge2OneTif();
	}
	public static void merge2OneTif() {
		try {
			int filezise = 0;
			DateFormat df=new SimpleDateFormat("yyyyMMdd HHmmss");
			String inputPath = "d:\\TiffMerge\\input\\";
			String outputPath = "d:\\TiffMerge\\output\\new_"+ df.format(new Date()) +".tif";
			// tif文件所在目錄
			File[] files = new File(inputPath).listFiles();
			ArrayList<PlanarImage> pages = new ArrayList<PlanarImage>(files.length - 1);
			FileSeekableStream[] stream = new FileSeekableStream[files.length];
			for (int i = 0; i < files.length; i++) {
				System.out.println(files[i].getCanonicalPath());
				// 只處理tif文件
				if(!files[i].getName().endsWith(".tif"))
					continue;
				stream[i]= new FileSeekableStream(files[i].getCanonicalPath());
				filezise = filezise + 1;
			}
			// 將第一個tif文件作為第一頁
			PlanarImage firstPage = JAI.create("stream", stream[0]);
			for (int i = 1; i < files.length; i++) {
				// 只處理tif文件
				if(!files[i].getName().endsWith(".tif"))
					continue;
				PlanarImage page = JAI.create("stream", stream[i]);
				pages.add(page);
			}
			TIFFEncodeParam param = new TIFFEncodeParam();
			// 設(shè)置壓縮模式 壓縮圖片大小 避免出現(xiàn)合并后尺寸過大的問題
			param.setCompression(TIFFEncodeParam.COMPRESSION_PACKBITS);
			TIFFField[] extras = new TIFFField[4];
			 extras[0] = new TIFFField(262, TIFFField.TIFF_SHORT, 1, (Object) new short[] { 6 });
             extras[1] = new TIFFField(282, 5, 1, (Object) new long[][]{{(long) 200, 1}, {0, 0}});
             extras[2] = new TIFFField(283, 5, 1, (Object) new long[][]{{(long) 200, 1}, {0, 0}});
             extras[3] = new TIFFField(258, TIFFField.TIFF_SHORT, 1, (Object) new char[] { 8 });
             param.setExtraFields(extras);
			//合并后新生成的圖片
			OutputStream os = new FileOutputStream(outputPath);
			ImageEncoder enc = ImageCodec.createImageEncoder("tiff", os, param);
			param.setExtraImages(pages.iterator());
			enc.encode(firstPage);
			for (int i = 0; i < files.length; i++) {
				if(stream[i]!=null)
					stream[i].close();
			}
			os.close();
			System.out.println("merge "+ filezise +" Tif success");
		} catch (Exception e) {
			e.printStackTrace();
			System.out.println("merge2OneTif error =>" + e.toString());
		}
	}
}