Java开源工具Jimi处理图片大小及格式转换

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);
String temp = desc;
File _file = null;
if (desc == null || desc.trim().equals(""))
desc = source;
if (!desc.toLowerCase().trim().endsWith("jpg")) {
writer.setSource(image);
// 加入属性设置，非必要
// /*
writer.setOptions(options);
// */
writer.putImage(outfile);
} catch (JimiException je) {
* @param quality
* 图片格式转换
*/
public void toJPG(String source, String type, int quality) {
//0<quality<100
if (quality < 0 || quality > 100 || (quality + "") == null || (quality + "").equals("")) {
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;
* @param ins
* 放大/缩小比率
* @throws JimiException
* @throws IOException
*/
public void changeDimension(String source, String desc, double ins) throws JimiException, IOException {
try {
JPGOptions options = new JPGOptions();
options.setQuality(quality);
ImageProducer image = Jimi.getImageProducer(source);
JimiWriter writer = Jimi.createJimiWriter(outfile);
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
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("源图长:"+height);
/*//缩放处理
int iWideth = (int) (wideth * ins);
int iHeight = (int) (height * ins);
*/
int iWideth = 300;
// do something with frame
}
//合成GIF:
AnimatedGifEncoder e = new AnimatedGifEncoder();
e.start(outputFileName);
e.setDelay(1000); // 1 frame per sec
// jpg to gif
AnimatedGifEncoder e = new AnimatedGifEncoder();
e.start(dest);
e.addFrame(file_in);
e.finish();
/*
//分解GIF:
GifDecoder d = new GifDecoder();
e.printStackTrace();
}
int end = stIndexOf(".");
file.deleteOnExit();
// output *.gif
file.renameTo(new File(dest.substring(0, end) + ".gif"));
toJPG(source, dest, 75);
BufferedImage file_in = null;
File file = new File(dest);
try {
file_in = javax.imageio.ImageIO.read(file);
} catch (Exception e) {
try{
System.out.println("toTIF encode");
JimiWriter writer = Jimi.createJimiWriter(dest);
writer.setSource(img);
dest = dest.substring(0, stIndexOf(".")) + ".tif";
if (!temp.trim().equals(desc))
_file.de).trim().endsWith("gif")) {
System.out.println("the type is gif!");
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
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
if (dest == null || dest.trim().equals(""))
dest = source;
// 1:转换为jpg
if (!dest.toLowerCase().trim().endsWith("jpg")) {
dest += ".jpg";
}
/*//打水印
File _filebiao = new File("test2.jpg");
Image src_biao = ImageIO.read(_filebiao);
int wideth_biao = 40;//src_biao.getWidth(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
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;
System.out.println("quality must between ’0’ and ’100’");
System.out.println("set to DEFAULT value:’75’");