Java开源工具Jimi处理图片大小及格式转换

做图片转换，用了java的开源软件jimi图片处理工具，编写了一个图片转换工具类，包括了给图片打水印，给大家分享。

import java.awt.Image;

import java.awt.image.BufferedImage;

import java.awt.image.ImageProducer;

import java.io.File;

import java.io.IOException;

import javax.imageio.ImageIO;

import com.sun.jimi.core.Jimi;

import com.sun.jimi.core.JimiException;

import com.sun.jimi.core.JimiWriter;

import com.sun.jimi.core.options.JPGOptions;

public class TransferPicture {

/**

* @param source

* @param dest

* @param quality

* 图片格式转换

*/

public void toJPG(String source, String type, int quality) {

//0if (quality < 0 || quality > 100 || (quality + "") == null || (quality + "").equals("")) {

System.out.println("quality must between ’0’ and ’100’");

System.out.println("set to DEFAULT value:’75’");

quality = 75;

}

String outfile = ConvertUtil.getFilename(source)+type;

try {

JPGOptions options = new JPGOptions();

options.setQuality(quality);

ImageProducer image = Jimi.getImageProducer(source);

JimiWriter writer = Jimi.createJimiWriter(outfile);

writer.setSource(image);

// 加入属性设置，非必要

// /*

writer.setOptions(options);

// */

writer.putImage(outfile);

} catch (JimiException je) {

System.err.println("Error: " + je);

}

}

/**

* @param source

* @param dest

* @throws JimiException

*/

public void toGIF(String source, String dest) throws JimiException {

if (dest == null || dest.trim().equals(""))

dest = source;

// 1:转换为jpg

if (!dest.toLowerCase().trim().endsWith("jpg")) {

dest += ".jpg";

}

toJPG(source, dest, 75);

BufferedImage file_in = null;

File file = new File(dest);

try {

file_in = javax.imageio.ImageIO.read(file);

} catch (Exception e) {

e.printStackTrace();

}

int end = http://www.doczj.com/doc/052faa22ccbff121dd36838a.htmlstIndexOf(".");

file.deleteOnExit();

// output *.gif

file.renameTo(new File(dest.substring(0, end) + ".gif"));

// jpg to gif

AnimatedGifEncoder e = new AnimatedGifEncoder();

e.start(dest);

e.addFrame(file_in);

e.finish();

/*

//分解GIF:

GifDecoder d = new GifDecoder();

d.read("sample.gif");

int n = d.getFrameCount();

for(int i = 0; i < n; i++) {

BufferedImage frame = d.getFrame(i); // frame　i

int t = d.getDelay(i); //　display　duration　of　frame　in　milliseconds

//　do　something　with　frame

}

//合成GIF:

AnimatedGifEncoder e = new AnimatedGifEncoder();

e.start(outputFileName);

e.setDelay(1000); //　1　frame　per　sec

e.addFrame(image1);

e.addFrame(image2);

e.finish();

*/

}

/**

* @param img

* @param dest

* @throws JimiException

*/

public void toTIF(Image img, String dest) throws JimiException {

if (!dest.t