Tif转Jpg使用心得：
如果tif图片需要压缩，或者需要做转换，常用方法：

 File file1 = new File("E:\\www\\ffw\\images\\73.jpg");byte[] bigContent = Files.readAllBytes(file1.toPath());ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(bigContent);Thumbnails.of(byteArrayInputStream).scale(1f).outputQuality(0.3f).toFile("E:\\www\\ffw\\images\\4.jpg");File file1 = new File("E:\\www\\ffw\\images\\5_1663186150934798337.jpg");MultipartFile file = FileUtil.getMultipartFile(file1);byte[] bytes = FileUtil.imageSet(file.getBytes());InputStream is = new ByteArrayInputStream(bytes );BufferedImage bufImg = ImageIO.read(is);后续网上很多 省略掉..... 主要是 ImageIO.read(is) 会读取为null

解决方案：
引入依赖：

        <dependency><groupId>com.twelvemonkeys.imageio</groupId><artifactId>imageio-tiff</artifactId><version>3.4.1</version></dependency>

让两个工具类支持读取Tif文件

        String[] readerList = ImageIO.getReaderFormatNames();System.out.println("读取支持格式："+Arrays.asList(readerList));String[] writerList = ImageIO.getWriterFormatNames();System.out.println("写入支持格式："+Arrays.asList(writerList));

   	引入前：

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