ImageIO读jpg的时候出现javax.imageio.IIOException: Unsupported Image Type
用java处理图片的时候，ImageIO读jpg的时候出现exception：bandOffsets.length is wrong。我也遇到过，最终也解决啦，把成果跟大家分享。
原因可能是JPEG图片的ICC信息可能已经被破坏了，所以ImageIO会抛出异常
解决办法：
BufferedImage bis = null;
try{
bis = ImageIO.read(file);
bis.getWidth();
bis.getHeight();
}catch(Exception e){
try
{
ThumbnailConvert tc = new ThumbnailConvert();
tc.setCMYK_COMMAND(file.getPath());
Image image =null;
image = Toolkit.getDefaultToolkit().getImage(file.getPath());
MediaTracker mediaTracker = new MediaTracker(new Container());
mediaTracker.addImage(image, 0);
mediaTracker.waitForID(0);
image.getWidth(null);
image.getHeight(null);
}catch (Exception e1){
e1.printStackTrace();
}
}
这两句代码，是处理cmyk类型的图片，需要ImageMagick的支持
ThumbnailConvert tc = new ThumbnailConvert();
tc.setCMYK_COMMAND(file.getPath());//用于把cmyk转成rgb
ImageMagick的具体指令是：mogrify -colorspace RGB -quality 100 file1
ThumbnailConvert.java
private String CMYK_COMMAND = "mogrify -colorspace RGB -quality 80 file1";//转换cmyk格式 public void setCMYK_COMMAND(String file1) { exeCommand(CMYK_COMMAND.replace("file1", file1)); } public boolean exeCommand(String cmd){ InputStreamReader ir = null; LineNumberReader input = null; try { //linux下java执行指令：Runtime.getRuntime().exec (String str); Process process = Runtime.getRuntime().exec (cmd); ir=new InputStreamReader(process.getInputStream()); input = new LineNumberReader (ir); while ((input.readLine ()) != null){ } ir.close(); input.close(); } catch (java.io.IOException e){ System.err.println ("IOException " + e.getMessage()); return false; } return true; }