/** * 图片判断 */ private static String getFormatName(Object o) { try { // Create an image input stream on the image ImageInputStream iis = ImageIO.createImageInputStream(o); // Find all image readers that recognize the image format Iterator<ImageReader> iter = ImageIO.getImageReaders(iis); if (!iter.hasNext()) { // No readers found return null; } // Use the first reader ImageReader reader = (ImageReader) iter.next(); // Close stream iis.close(); // Return the format name return reader.getFormatName(); } catch (IOException e) { // } // The image could not be read return null; }
java 代码判断图片格式后缀名称
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