【轉】判斷是否是圖片,java實現

原文鏈接：

https://blog.csdn.net/u010002184/article/details/74227581

private static boolean isImage(File file) throws IOException {
		BufferedImage bi = ImageIO.read(file);
		if(bi == null){
		   return false;
		}
		return true;

　　

// 0.2.內容校驗
public void  method(MultipartFile file){
        try {
            BufferedImage image = ImageIO.read(file.getInputStream());
            if (image == null) {
                // 圖片格式不正確
                throw new RuntimeException();
            }
        } catch (IOException e) {
            throw new RuntimeException("圖片格式不正確！");
        }
}