import javax.imageio.ImageIO;

import net.coobird.thumbnailator.Thumbnails;import net.coobird.thumbnailator.geometry.Positions;

public class ThumbnailatorTest {

/** * * @param args * @throws IOException */public static void main(String[] args) throws IOException {ThumbnailatorTest thumbnailatorTest = new ThumbnailatorTest();thumbnailatorTest.test1();thumbnailatorTest.test2();thumbnailatorTest.test3();thumbnailatorTest.test4();thumbnailatorTest.test5();thumbnailatorTest.test6();thumbnailatorTest.test7();thumbnailatorTest.test8();thumbnailatorTest.test9();}

/** * 指定大小进行缩放 * * @throws IOException */private void test1() throws IOException {/* * size(width,height) 若图片横比200小，高比300小，不变 * 若图片横比200小，高比300大，高缩小到300，图片比例不变 若图片横比200大，高比300小，横缩小到200，图片比例不变 * 若图片横比200大，高比300大，图片按比例缩小，横为200或高为300 */Thumbnails.of("images/test.jpg").size(200, 300).toFile("C:/image_200x300.jpg");Thumbnails.of("images/test.jpg").size(2560, 2048).toFile("C:/image_2560x2048.jpg");}

/** * 按照比例进行缩放 * * @throws IOException */private void test2() throws IOException {/** * scale(比例) */Thumbnails.of("images/test.jpg").scale(0.25f).toFile("C:/image_25%.jpg");Thumbnails.of("images/test.jpg").scale(1.10f).toFile("C:/image_110%.jpg");}

/** * 不按照比例，指定大小进行缩放 * * @throws IOException */private void test3() throws IOException {/** * keepAspectRatio(false) 默认是按照比例缩放的 */Thumbnails.of("images/test.jpg").size(120, 120).keepAspectRatio(false).toFile("C:/image_120x120.jpg");}

/** * 旋转 * * @throws IOException */private void test4() throws IOException {/** * rotate(角度),正数：顺时针 负数：逆时针 */Thumbnails.of("images/test.jpg").size(1280, 1024).rotate(90).toFile("C:/image+90.jpg");Thumbnails.of("images/test.jpg").size(1280, 1024).rotate(-90).toFile("C:/iamge-90.jpg");}

/** * 水印 * * @throws IOException */private void test5() throws IOException {/** * watermark(位置，水印图，透明度) */Thumbnails.of("images/test.jpg").size(1280, 1024).watermark(Positions.BOTTOM_RIGHT, ImageIO.read(new File("images/watermark.png")), 0.5f).outputQuality(0.8f).toFile("C:/image_watermark_bottom_right.jpg");Thumbnails.of("images/test.jpg").size(1280, 1024).watermark(Positions.CENTER, ImageIO.read(new File("images/watermark.png")), 0.5f).outputQuality(0.8f).toFile("C:/image_watermark_center.jpg");}

/** * 裁剪 * * @throws IOException */private void test6() throws IOException {/** * 图片中心400*400的区域 */Thumbnails.of("images/test.jpg").sourceRegion(Positions.CENTER, 400, 400).size(200, 200).keepAspectRatio(false).toFile("C:/image_region_center.jpg");/** * 图片右下400*400的区域 */Thumbnails.of("images/test.jpg").sourceRegion(Positions.BOTTOM_RIGHT, 400, 400).size(200, 200).keepAspectRatio(false).toFile("C:/image_region_bootom_right.jpg");/** * 指定坐标 */Thumbnails.of("images/test.jpg").sourceRegion(600, 500, 400, 400).size(200, 200).keepAspectRatio(false).toFile("C:/image_region_coord.jpg");}

/** * 转化图像格式 * * @throws IOException */private void test7() throws IOException {/** * outputFormat(图像格式) */Thumbnails.of("images/test.jpg").size(1280, 1024).outputFormat("png").toFile("C:/image_1280x1024.png");Thumbnails.of("images/test.jpg").size(1280, 1024).outputFormat("gif").toFile("C:/image_1280x1024.gif");}

/** * 输出到OutputStream * * @throws IOException */private void test8() throws IOException {/** * toOutputStream(流对象) */OutputStream os = new FileOutputStream("C:/image_1280x1024_OutputStream.png");Thumbnails.of("images/test.jpg").size(1280, 1024).toOutputStream(os);}

/** * 输出到BufferedImage * * @throws IOException */private void test9() throws IOException {/** * asBufferedImage() 返回BufferedImage */BufferedImage thumbnail = Thumbnails.of("images/test.jpg").size(1280, 1024).asBufferedImage();ImageIO.write(thumbnail, "jpg", new File("C:/image_1280x1024_BufferedImage.jpg"));}}