【原】java读取TIF，TIFF文件方法

private void isAsyuku() throws Exception {
        InputStream file = upFile.getInputstream();
        int index = StringUtils.split(upFile.getFileName(), "\\").length - 1;
        String fileName1 = StringUtils.split(upFile.getFileName(), "\\")[index];
        if(StringUtils.split(fileName1, ".").length == 1){
            return;
        }
        String extension = StringUtils.split(fileName1, ".")[1];
        StringUtils.equals(extension, "");
        if (StringUtils.equals(extension, "gif") || StringUtils.equals(extension, "bmp")
                || StringUtils.equals(extension, "jpg") || StringUtils.equals(extension, "tif")
                || StringUtils.equals(extension, "tiff") || StringUtils.equals(extension, "GIF")
                || StringUtils.equals(extension, "BMP") || StringUtils.equals(extension, "JPG")
                || StringUtils.equals(extension, "TIF") || StringUtils.equals(extension, "TIFF")) {
            
            if (StringUtils.equals(extension, "TIFF") || StringUtils.equals(extension, "TIF")
                    || StringUtils.equals(extension, "tif") || StringUtils.equals(extension, "tiff")) {
                IIORegistry registry = IIORegistry.getDefaultInstance();
                registry.registerServiceProvider(new com.sun.media.imageioimpl.plugins.tiff.TIFFImageWriterSpi());
                registry.registerServiceProvider(new com.sun.media.imageioimpl.plugins.tiff.TIFFImageReaderSpi());
            }
            // ファイルのピクセールサイズを取得する
            BufferedImage image = ImageIO.read(file);
            BigDecimal width = BigDecimal.valueOf(image.getWidth());
            BigDecimal height = BigDecimal.valueOf(image.getHeight());
            if (width.compareTo(new BigDecimal(5000)) > 0 || height.compareTo(new BigDecimal(5000)) > 0) {
                this.imageFlage = "true";
            } else {
                this.imageFlage = "false";
            }
        }
    }