BufferedImage 在BufferedImage bImageFromConvert = ImageIO.read(in);内传递字节数组时获取字节数组后的
显示错误：
javax.imageio.IIOException: Error reading PNG image data at
com.sun.imageio.plugins.png.PNGImageReader.readImage(Unknown Source) at
com.sun.imageio.plugins.png.PNGImageReader.read(Unknown Source) at
javax.imageio.ImageIO.read(Unknown Source) at
javax.imageio.ImageIO.read(Unknown Source)
这背后可能是什么原因？