import java.awt.image.RenderedImage;
import java.awt.image.renderable.ParameterBlock;
import java.io.File;
import java.io.IOException;import javax.media.jai.JAI;
import javax.media.jai.RenderedOp;import com.sun.media.jai.codec.FileSeekableStream;
import com.sun.media.jai.codec.ImageCodec;
import com.sun.media.jai.codec.ImageDecoder;
import com.sun.media.jai.codec.JPEGEncodeParam;
import com.sun.media.jai.codec.TIFFDecodeParam;
import com.sun.media.jai.codec.TIFFEncodeParam;public class TestTiffToJPEG {public static void main(String[] args){tiffToJPEG("F:\\Workspace\\exoa\\oadoc\\test\\tiffile\\testfile.tif");}public static void tiffToJPEG(String tiff){FileSeekableStream ss = null;try {ss = new FileSeekableStream(tiff);//以流形式取出tif文件数据} catch (IOException e) {System.out.println("Exception in " + tiff + " " + e.getMessage());e.printStackTrace();}String path,tiffName;path = tiff.substring(0, tiff.lastIndexOf("."));tiffName = tiff.substring(tiff.lastIndexOf("\\"),tiff.lastIndexOf("."));TIFFDecodeParam param0 = null;TIFFEncodeParam param = new TIFFEncodeParam();JPEGEncodeParam param1 = new JPEGEncodeParam();if(ss!=null){ImageDecoder dec = ImageCodec.createImageDecoder("tiff", ss, param0);//将tif文件流转为image图片int count = 0;try {count = dec.getNumPages();//tif文件页数} catch (IOException e) {System.out.println("Exception in dec.getNumPages() " + e.getMessage());e.printStackTrace();}param.setCompression(TIFFEncodeParam.COMPRESSION_GROUP4);param.setLittleEndian(false); // IntelSystem.out.println("This TIF has " + count + " image(s)");for (int i = 0; i < count; i++) {//存储为jpeg图片RenderedImage page = null;File f = new File(path,"\\"+tiffName+"_" + i + ".jpg");try {page = dec.decodeAsRenderedImage(i);//取出第i张image图片if(!f.exists()){f.getParentFile().mkdirs();f.createNewFile();}} catch (IOException e) {System.out.println("Exception in File f or dec.decodeAsRenderedImage(i)" + e.getMessage());e.printStackTrace();}if(f.exists() && page != null){//压缩图片并保存为JPEG格式ParameterBlock pb = new ParameterBlock();pb.addSource(page);pb.add(f.toString());pb.add("JPEG");pb.add(param1);RenderedOp r = JAI.create("filestore",pb);r.dispose();}}}}
}

import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;import javax.imageio.ImageIO;
import javax.imageio.ImageReader;
import javax.imageio.stream.ImageInputStream;public class TiffToJPEGByImageIO {public static void main(String[] args){tiffToJPEGByImageIO("F:\\Workspace\\exoa\\oadoc\\test\\tiffile\\1.tif");}private static void tiffToJPEGByImageIO(String tiff) {ImageInputStream input;try {input = ImageIO.createImageInputStream(new File(tiff));//以图片输入流形式读取到tif// Get the readerImageReader reader = ImageIO.getImageReaders(input).next();//获得image阅读器，阅读对象为tif文件转换的流String path,tiffName;path = tiff.substring(0, tiff.lastIndexOf("."));tiffName = tiff.substring(tiff.lastIndexOf("\\"),tiff.lastIndexOf("."));try {reader.setInput(input);// Read page 2 of the TIFF fileint count = reader.getNumImages(true);//tif文件页数//System.out.println(count);for(int i = 0; i < count; i++){BufferedImage image = reader.read(i, null);//取得第i页File f = new File(path,"\\"+tiffName+"_"+i+".jpg");try {if(!f.exists()){f.getParentFile().mkdirs();f.createNewFile();}} catch (IOException e) {e.printStackTrace();}ImageIO.write(image, "JPEG", f);//保存图片}}finally {reader.dispose();input.close();}}catch (IOException e) {e.printStackTrace();}}
}