标签：compress cas 模块 图存储 array pack 添加 位置 nal
package default;
import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStream;
import javax.imageio.ImageIO;
import net.coobird.thumbnailator.Thumbnails;
import net.coobird.thumbnailator.geometry.Positions;
/**
* 图片缩略、裁剪、添加水印工具类
* @author Henry
* @version [版本号, Jun 20, 2017]
* @see [相关类/方法]
* @since [产品/模块版本]
*/
public class ImageThumbUtils {
/** 压缩质量为100% */
public static double PERCENT_100 = 1.0;
/**
* 图片尺寸不变,图片内存压缩
* 压缩图片文件大小outputQuality实现,参数1为最高质量,此处0.1f表示压缩为原内存的1/10
*
* @param originalImgPath 源图片路径
* @param targetImgPath 压缩后图片路径
* @throws Exception
* @author Henry
* @version [版本号, Jun 20, 2017]
* @see [类、类#方法、类#成员]
*/
public static void thumbImage(String originalImgPath, String targetImgPath) throws Exception {
Thumbnails.of(originalImgPath).scale(1f).outputQuality(0.1f).toFile(targetImgPath);
}
/**
* 缩略图片，图片质量为源图的100%
* @param originalImgPath 源图片存储路径
* @param w 图片压缩后的宽度
* @param h 图片压缩后的高度
* @param targetImgPath 缩略图的存放路径
* @throws Exception
* @author Henry
* @version [版本号, Jun 20, 2017]
* @see [类、类#方法、类#成员]
*/
public static void thumbImage(String originalImgPath, int w, int h, String targetImgPath) throws Exception {
thumbImage(new FileInputStream(originalImgPath), w, h, targetImgPath, PERCENT_100);
}
/**
* 缩略图片，图片质量为源图100%
* @param originalImgData 源图片字节数
* @param w 图片压缩后的宽度
* @param h 图片压缩后的高度
* @param targetImgPath 缩略图的存放路径
* @throws Exception
* @author Henry
* @version [版本号, Jun 20, 2017]
* @see [类、类#方法、类#成员]
*/
public static void thumbImage(byte[] originalImgData, int w, int h, String targetImgPath) throws Exception {
thumbImage(new ByteArrayInputStream(originalImgData), w, h, targetImgPath, PERCENT_100);
}
/**
* 按尺寸比例缩略
* @param originalInputSteam 源图输入流
* @param w 缩略宽
* @param h 缩略高
* @param targetImgPath 缩略图存储路径
* @param compressQalitiy 缩略质量比例，0~1之间的数
* @throws Exception
* @author Henry
* @version [版本号, Jun 20, 2017]
* @see [类、类#方法、类#成员]
*/
public static void thumbImage(InputStream originalInputSteam, int w, int h, String targetImgPath, double compressQalitiy) throws Exception {
thumbImage(originalInputSteam, w, h, targetImgPath, compressQalitiy, true);
}
/**
*
* @param originalImgInputSteam 源图片输入流
* @param w 图片压缩后的宽度
* @param h 图片压缩后的高度
* @param targetImgPath 缩略图的存放路径
* @param compressQalitiy 压缩比例,0~1之间的double数字
* @param keepAspectRatio 是否保持等比例压缩,是true,不是false
* @throws Exception
* @author Henry
* @version [版本号, Jun 20, 2017]
* @see [类、类#方法、类#成员]
*/
public static void thumbImage(InputStream originalImgInputSteam, int w, int h, String targetImgPath, double compressQalitiy, boolean keepAspectRatio) throws Exception {
Thumbnails.of(originalImgInputSteam).size(w, h).outputQuality(Double.valueOf(compressQalitiy)).keepAspectRatio(true).toFile(targetImgPath);
}
/**
* 图片裁剪
* @param originalImgPath 源图片路径
* @param position 位置 0正中间，1中间左边，2中间右边，3底部中间，4底部左边，5底部右边，6顶部中间，7顶部左边，8顶部右边,其他为默认正中间
* @param w 裁剪宽度
* @param h 裁剪高度
* @param targetImgPath 新图片路径
* @throws Exception
* @author Henry
* @version [版本号, Jun 20, 2017]
* @see [类、类#方法、类#成员]
*/
public static void crop(String originalImgPath, int position, int w, int h, String targetImgPath) throws Exception {
Thumbnails.of(originalImgPath).sourceRegion(getPositions(position), w, h).size(w, h).outputQuality(1).toFile(targetImgPath);
}
/**
* 图片添加水印
* @param originalImgPath 将被添加水印图片路径
* @param watermarkImgPath 水印图片
* @param position 位置 0正中间，1中间左边，2中间右边，3底部中间，4底部左边，5底部右边，6顶部中间，7顶部左边，8顶部右边，其他为默认正中间
* @param opacity 不透明度,取0~1之间的float数字，0完全透明，1完全不透明
* @param targetImgPath 含有水印的新图片路径
* @throws Exception
* @author Henry
* @version [版本号, Jun 20, 2017]
* @see [类、类#方法、类#成员]
*/
public static void watermark(String originalImgPath, String watermarkImgPath, int position, float opacity, String targetImgPath) throws Exception {
Thumbnails.of(originalImgPath).watermark(getPositions(position), ImageIO.read(new File(watermarkImgPath)), opacity).scale(1.0).outputQuality(1).toFile(targetImgPath);
}
private static Positions getPositions(int position) {
Positions p = Positions.CENTER;
switch (position) {
case 0: {
p = Positions.CENTER;
break;
}
case 1: {
p = Positions.CENTER_LEFT;
break;
}
case 2: {
p = Positions.CENTER_RIGHT;
break;
}
case 3: {
p = Positions.BOTTOM_CENTER;
break;
}
case 4: {
p = Positions.BOTTOM_LEFT;
break;
}
case 5: {
p = Positions.BOTTOM_RIGHT;
break;
}
case 6: {
p = Positions.TOP_CENTER;
break;
}
case 7: {
p = Positions.TOP_LEFT;
break;
}
case 8: {
p = Positions.TOP_RIGHT;
break;
}
default: {
p = Positions.CENTER;
break;
}
}
return p;
}
}
标签：compress cas 模块 图存储 array pack 添加 位置 nal
原文地址：http://www.cnblogs.com/zhc-hnust/p/7039502.html
