JAVA 이미지 압축 도구 클래스 구현

package com.rest.ful.utils;

import java.awt.image.BufferedImage;
import java.awt.image.ColorModel;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;

import javax.imageio.IIOImage;
import javax.imageio.ImageIO;
import javax.imageio.ImageWriteParam;
import javax.imageio.ImageWriter;

public class ImageUtil {
    public static boolean compressPic(String srcFilePath, String descFilePath) throws IOException {
        File file = null;
        BufferedImage src = null;
        FileOutputStream out = null;
        ImageWriter imgWrier;
        ImageWriteParam imgWriteParams;

        //           jpg
        imgWrier = ImageIO.getImageWritersByFormatName("jpg").next();
        imgWriteParams = new javax.imageio.plugins.jpeg.JPEGImageWriteParam(null);
        //      ，         MODE_EXPLICIT
        imgWriteParams.setCompressionMode(imgWriteParams.MODE_EXPLICIT);
        //          ，  qality   0~1   ，
        imgWriteParams.setCompressionQuality((float) 1);
        imgWriteParams.setProgressiveMode(imgWriteParams.MODE_DISABLED);
        ColorModel colorModel =ImageIO.read(new File(srcFilePath)).getColorModel();// ColorModel.getRGBdefault();
        //             
        // imgWriteParams.setDestinationType(new javax.imageio.ImageTypeSpecifier(
//                colorModel, colorModel.createCompatibleSampleModel(16, 16)));
        imgWriteParams.setDestinationType(new javax.imageio.ImageTypeSpecifier(colorModel, colorModel.createCompatibleSampleModel(16, 16)));

        try {
            if (isBlank(srcFilePath)) {
                return false;
            } else {
                file = new File(srcFilePath);System.out.println(file.length());
                src = ImageIO.read(file);
                out = new FileOutputStream(descFilePath);

                imgWrier.reset();
                //       out ，    write  , ImageOutputStream      
                // OutputStream  
                imgWrier.setOutput(ImageIO.createImageOutputStream(out));
                //   write  ，          
                imgWrier.write(null, new IIOImage(src, null, null),
                        imgWriteParams);
                out.flush();
                out.close();
            }
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
        return true;
    }
    public static boolean isBlank(String string) {
        if (string == null || string.length() == 0 || string.trim().equals("")) {
            return true;
        }
        return false;
    }
}