Java开源工具Jimi处理图片大小及格式转换

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 = https://www.wendangku.net/doc/0c6360010.html,stIndexOf(".");
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

oLowerCase().trim().endsWith("tif")) {
dest += ".tif";
System.out.println("Overriding to TIF, output file: " + dest);
}
dest = dest.substring(0, https://www.wendangku.net/doc/0c6360010.html,stIndexOf(".")) + ".jpg";
try{
System.out.println("toTIF encode");
JimiWriter writer = Jimi.createJimiWriter(dest);
writer.setSource(img);
dest = dest.substring(0, https://www.wendangku.net/doc/0c6360010.html,stIndexOf(".")) + ".tif";
writer.putImage(dest);
}catch(Exception e){e.printStackTrace();}
}

/**
* 线性改变图片尺寸(可同时改变图片格式)
* @param source
* 源文件完整路径
* @param desc
* 目标文件完整路径
* @param ins
* 放大/缩小比率
* @throws JimiException
* @throws IOException
*/
public void changeDimension(String source, String desc, double ins) throws JimiException, IOException {
String temp = desc;
File _file = null;
if (desc == null || desc.trim().equals(""))
desc = source;
if (!desc.toLowerCase().trim().endsWith("jpg")) {
temp = desc.trim() + ".jpg";
}
this.toJPG(source, temp, 75);
_file = new File(temp); // 读入文件

Image src = javax.imageio.ImageIO.read(_file); // 构造Image对象
double wideth = (double) src.getWidth(null); // 得到源图宽
double height = (double) src.getHeight(null); // 得到源图长
System.out.println("源图宽:"+wideth);
System.out.println("源图长:"+height);
/*//缩放处理
int iWideth = (int) (wideth * ins);
int iHeight = (int) (height * ins);
*/
int iWideth = 300;
int iHeight = 200;
System.out.println("现图宽:"+iWideth);
System.out.println("现图长:"+iHeight);
System.out.println("缩放参数:"+ins);
BufferedImage tag = null;
try{
tag = new BufferedImage(iWideth, iHeight,BufferedImage.TYPE_INT_RGB);
tag.getGraphics().drawImage(src, 0, 0, iWideth, iHeight, null); // 绘制缩小后的图
/*//打水印
File _filebiao = new File("test2.jpg");
Image src_biao = ImageIO.read(_filebiao);
int wideth_biao = 40;//src_biao.getWidth(null);
int height_biao = 40;//src_biao.getHeight(null);
tag.getGraphics().drawImage(src_biao,50,50,wideth_biao,height_biao,null);
*/
}catch(Exception e){e.printStackTrace();}

if (!temp.trim().equals(desc))
_file.deleteOnExit();

if (desc.toLowerCase().trim().endsWith("gif")) {
System.out.println("the type is gif!");
AnimatedGifEncoder e = new AnimatedGifEncoder();
e.start(desc);
e.addFrame(tag);
e.finish();
} else if (desc.toLowerCase().trim().endsWith("tif") || desc.toLowerCase().trim().endsWith("tiff")) {
System.out.println("the type is tif!");
this.toTIF(tag, desc);
} else {
try{
System.out.println("common type!");
JimiWriter writer = Jimi.createJimiWriter(desc);
writer.setSource(tag);
writer.putImage(desc);
}catch(Exception ex){ex.printStackTrace();}
}
}

public void transpic(String infile,int iWideth, int iHeight, String type) throws Ji

miException, IOException {
String temp = infile;
File _file = null;
/*if (outfile == null || outfile.trim().equals(""))
outfile = infile;
if (!outfile.toLowerCase().trim().endsWith("jpg")) {
temp = outfile.trim() + ".jpg";
}*/
ConvertUtil cu = new ConvertUtil();
if(!cu.getFiletype(infile).equals("jpg")){
this.toJPG(infile, temp, 75);
}
_file = new File(temp); // 读入文件

Image src = javax.imageio.ImageIO.read(_file); // 构造Image对象
double wideth = (double) src.getWidth(null); // 得到源图宽
double height = (double) src.getHeight(null); // 得到源图长
System.out.println("源图宽:"+wideth);
System.out.println("源图长:"+height);
/*//缩放处理
int iWideth = (int) (wideth * ins);
int iHeight = (int) (height * ins);
*/
//int iWideth = 300;
//int iHeight = 200;
System.out.println("现图宽:"+iWideth);
System.out.println("现图长:"+iHeight);
String outfile = "";
BufferedImage tag = null;
try{
tag = new BufferedImage(iWideth, iHeight,BufferedImage.TYPE_INT_RGB);
tag.getGraphics().drawImage(src, 0, 0, iWideth, iHeight, null); // 绘制缩小后的图
/*//打水印
File _filebiao = new File("test2.jpg");
Image src_biao = ImageIO.read(_filebiao);
int wideth_biao = 40;//src_biao.getWidth(null);
int height_biao = 40;//src_biao.getHeight(null);
tag.getGraphics().drawImage(src_biao,50,50,wideth_biao,height_biao,null);
*/
}catch(Exception e){e.printStackTrace();}

if (!temp.trim().equals(outfile))
_file.deleteOnExit();

if (outfile.toLowerCase().trim().endsWith("gif")) {
System.out.println("the type is gif!");
AnimatedGifEncoder e = new AnimatedGifEncoder();
e.start(outfile);
e.addFrame(tag);
e.finish();
} else if (outfile.toLowerCase().trim().endsWith("tif") || outfile.toLowerCase().trim().endsWith("tiff")) {
System.out.println("the type is tif!");
this.toTIF(tag, outfile);
} else {
try{
System.out.println("common type!");
JimiWriter writer = Jimi.createJimiWriter(outfile);
writer.setSource(tag);
writer.putImage(outfile);
}catch(Exception ex){ex.printStackTrace();}
}
}

public static void main(String[] args) {
String dest = "test.jpg";
String source = "test.gif";
int quality = 100;
double ins = 4;
TransferPicture tp = new TransferPicture();
try{
System.out.println("before change");
System.out.println("-------------------");
//tp.toJPG(source,dest,quality);
//tp.toGIF(source, dest);
tp.changeDimension(source, dest, ins);
System.out.println("-------------------");
System.out.println("end change");
}catch(Exception e){
e.printStackTrace();
}
}

}