java图片高质量压缩

标签：java 图片高质量压缩

/**

* 根据宽高编辑图片

* 

* @param outPath

*            输出文件路径

* @param width

*            输出文件宽

* @param height

*            输出文件高

* @throws Exception

*/

public static void dealImage(String filePath, String outPath, Integer width,

Integer height) throws Exception {

// 读取本地文件：

InputStream is = new FileInputStream(filePath);

//判断图片大小   0---500k 进行4倍压缩       500----1024k   进行6倍压缩     1024以上进行8倍压缩

File picture = new File(filePath);

int cutMultiple = 2;

if (picture.exists()){  

//int picsize =Integer.parseInt(new DecimalFormat("0").format(picture.length()/1024.0));//四舍五入

try {

int picsize = (int) (picture.length()/1024.0);//非四舍五入

if(picsize<=512){

cutMultiple=4;

}else if(picsize>512 && picsize<=1024){

cutMultiple=6;

}else if(picsize>1024){

cutMultiple=8;

}

} catch (Exception e) {//假容错处理

cutMultiple=2;

}

}

Image image = ImageIO.read(is);

float tagsize = 200;

int old_w = image.getWidth(null);

int old_h = image.getHeight(null);

int tempsize;

BufferedImage tag = new BufferedImage(old_w/cutMultiple, old_h/cutMultiple, BufferedImage.TYPE_INT_RGB);

tag.getGraphics().drawImage(image, 0, 0, old_w/cutMultiple, old_h/cutMultiple, null);

FileOutputStream newimage = new FileOutputStream(outPath);

JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(newimage);

encoder.encode(tag);

newimage.close();

}

java图片高质量压缩

标签：java 图片高质量压缩

原文地址：http://xuanxy.blog.51cto.com/2357481/1670874