thumbnailator工具类代码实例
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import javax.imageio.ImageIO;
import net.coobird.thumbnailator.Thumbnails;
import net.coobird.thumbnailator.geometry.Position;
public class ImageUtil {
public static void main(String[] args) throws IOException {
int x = 0;
int y = 0;//左上
int w = 300;
int h = 500;//右下
imgSourceRegion("e:/upload/1508166546722.jpg", "e:/upload/top", x, y, x + w, y + h, 768, 576, true);
}
/**
* 指定大小进行缩放 若图片横比width小，高比height小，不变 若图片横比width小，高比height大，高缩小到height，图片比例不变
* 若图片横比width大，高比height小，横缩小到width，图片比例不变
* 若图片横比width大，高比height大，图片按比例缩小，横为width或高为height
*
* @param source 输入源
* @param output 输出源
* @param width 宽
* @param height 高
* @throws IOException
*/
public static void imgThumb(String source, String output, int width, int height, float quality) throws IOException {
Thumbnails.of(source).size(width, height).outputQuality(quality).outputFormat("jpg").toFile(output);
}
/**
* 指定大小进行缩放
*
* @param source 输入源
* @param output 输出源
* @param width 宽
* @param height 高
* @throws IOException
*/
public static void imgThumb(File source, String output, int width, int height, float quality) throws IOException {
Thumbnails.of(source).size(width, height).outputQuality(quality).outputFormat("jpg").toFile(output);
}
/**
* 按照比例进行缩放
*
* @param source 输入源
* @param output 输出源
* @throws IOException
*/
public static void imgScale(String source, String output, double scale) throws IOException {
Thumbnails.of(source).scale(scale).outputFormat("jpg").toFile(output);
}
public static void imgScale(File source, String output, double scale) throws IOException {
Thumbnails.of(source).scale(scale).outputFormat("jpg").toFile(output);
}
/**
* 不按照比例，指定大小进行缩放
*
* @param source 输入源
* @param output 输出源
* @param width 宽
* @param height 高
* @param keepAspectRatio 默认是按照比例缩放的,值为false 时不按比例缩放
*/
public static void imgNoScale(String source, String output, int width, int height, boolean keepAspectRatio)
throws IOException {
Thumbnails.of(source).size(width, height).keepAspectRatio(keepAspectRatio).outputFormat("jpg").toFile(output);
}
public static void imgNoScale(File source, String output, int width, int height, boolean keepAspectRatio)
throws IOException {
Thumbnails.of(source).size(width, height).keepAspectRatio(keepAspectRatio).outputFormat("jpg").toFile(output);
}
/**
* 旋转 ,正数：顺时针 负数：逆时针
*
* @param source 输入源
* @param output 输出源
* @param width 宽
* @param height 高
* @param rotate 角度
*/
public static void imgRotate(String source, String output, int width, int height, double rotate)
throws IOException {
Thumbnails.of(source).size(width, height).rotate(rotate).outputFormat("jpg").toFile(output);
}
public static void imgRotate(File source, String output, int width, int height, double rotate) throws IOException {
Thumbnails.of(source).size(width, height).rotate(rotate).outputFormat("jpg").toFile(output);
}
/**
* 水印
*
* @param source 输入源
* @param output 输入源
* @param width 宽
* @param height 高
* @param position 水印位置 Positions.BOTTOM_RIGHT o.5f
* @param watermark 水印图片地址
* @param transparency 透明度 0.5f
* @param quality 图片质量 0.8f
*/
public static void imgWatermark(String source, String output, int width, int height, Position position,
String watermark, float transparency, float quality) throws IOException {
Thumbnails.of(source).size(width, height).watermark(position, ImageIO.read(new File(watermark)), transparency)
.outputQuality(0.8f).outputFormat("jpg").toFile(output);
}
public static void imgWatermark(File source, String output, int width, int height, Position position,
String watermark, float transparency, float quality) throws IOException {
Thumbnails.of(source).size(width, height).watermark(position, ImageIO.read(new File(watermark)), transparency)
.outputQuality(0.8f).outputFormat("jpg").toFile(output);
}
/**
* 裁剪图片
*
* @param source 输入源
* @param output 输出源
* @param position 裁剪位置
* @param x 裁剪区域x
* @param y 裁剪区域y
* @param width 宽
* @param height 高
* @param keepAspectRatio 默认是按照比例缩放的,值为false 时不按比例缩放
*/
public static void imgSourceRegion(String source, String output, Position position, int x, int y, int width,
int height, boolean keepAspectRatio) throws IOException {
Thumbnails.of(source).sourceRegion(position, x, y).size(width, height).keepAspectRatio(keepAspectRatio)
.outputFormat("jpg").toFile(output);
}
public static void imgSourceRegion(File source, String output, Position position, int x, int y, int width,
int height, boolean keepAspectRatio) throws IOException {
Thumbnails.of(source).sourceRegion(position, x, y).size(width, height).keepAspectRatio(keepAspectRatio)
.outputFormat("jpg").toFile(output);
}
/**
* 按坐标裁剪
*
* @param source 输入源
* @param output 输出源
* @param x 起始x坐标
* @param y 起始y坐标
* @param x1 结束x坐标
* @param y1 结束y坐标
* @param width 宽
* @param height 高
* @param keepAspectRatio 默认是按照比例缩放的,值为false 时不按比例缩放
*/
public static void imgSourceRegion(String source, String output, int x, int y, int x1, int y1, int width,
int height, boolean keepAspectRatio) throws IOException {
Thumbnails.of(source).sourceRegion(x, y, x1, y1).size(width, height).keepAspectRatio(keepAspectRatio)
.toFile(output);
}
public static void imgSourceRegion(File source, String output, int x, int y, int x1, int y1, int width, int height,
boolean keepAspectRatio) throws IOException {
Thumbnails.of(source).sourceRegion(x, y, x1, y1).size(width, height).keepAspectRatio(keepAspectRatio)
.outputFormat("jpg").toFile(output);
}
/**
* 转化图像格式
*
* @param source 输入源
* @param output 输出源
* @param width 宽
* @param height 高
* @param format 图片类型，gif、png、jpg
*/
public static void imgFormat(String source, String output, int width, int height, String format)
throws IOException {
Thumbnails.of(source).size(width, height).outputFormat(format).toFile(output);
}
public static void imgFormat(File source, String output, int width, int height, String format) throws IOException {
Thumbnails.of(source).size(width, height).outputFormat(format).outputFormat("jpg").toFile(output);
}
/**
* 输出到OutputStream
*
* @param source 输入源
* @param output 输出源
* @param width 宽
* @param height 高
* @return toOutputStream(流对象)
*/
public static OutputStream imgOutputStream(String source, String output, int width, int height) throws IOException {
OutputStream os = new FileOutputStream(output);
Thumbnails.of(source).size(width, height).outputFormat("jpg").toOutputStream(os);
return os;
}
public static OutputStream imgOutputStream(File source, String output, int width, int height) throws IOException {
OutputStream os = new FileOutputStream(output);
Thumbnails.of(source).size(width, height).outputFormat("jpg").toOutputStream(os);
return os;
}
/**
* 输出到BufferedImage
*
* @param source 输入源
* @param output 输出源
* @param width 宽
* @param height 高
* @param format 图片类型，gif、png、jpg
* @return BufferedImage
*/
public static BufferedImage imgBufferedImage(String source, String output, int width, int height, String format)
throws IOException {
BufferedImage buf = Thumbnails.of(source).size(width, height).outputFormat("jpg").asBufferedImage();
ImageIO.write(buf, format, new File(output));
return buf;
}
public static BufferedImage imgBufferedImage(File source, String output, int width, int height, String format)
throws IOException {
BufferedImage buf = Thumbnails.of(source).size(width, height).outputFormat("jpg").asBufferedImage();
ImageIO.write(buf, format, new File(output));
return buf;
}
}
jar包下载
net.coobird
thumbnailator
0.4.8
