请教一个图片旋转的问题。。。。。急！！！
public   static   BufferedImage   rotateImg(BufferedImage   image,   int   degree,
Color   bgcolor)   {

int   iw   =   image.getWidth();
int   ih   =   image.getHeight();
int   w   =   0;
int   h   =   0;
int   x   =   0;
int   y   =   0;
degree   =   degree   %   360;
if   (degree   <   0)
degree   =   360   +   degree;
double   ang   =   degree   *   0.0174532925;

if   (degree   ==   180   ||   degree   ==   0   ||   degree   ==   360)   {
w   =   iw;
h   =   ih;
}   else   if   (degree   ==   90   ||   degree   ==   270)   {
w   =   ih;
h   =   iw;
}   else   {
int   d   =   iw   +   ih;
w   =   (int)   (d   *   Math.abs(Math.cos(ang)));
h   =   (int)   (d   *   Math.abs(Math.sin(ang)));
}

x   =   (w   /   2)   -   (iw   /   2);
y   =   (h   /   2)   -   (ih   /   2);
BufferedImage   rotatedImage   =   new   BufferedImage(w,   h,   image.getType());
Graphics   gs   =   rotatedImage.getGraphics();
gs.setColor(bgcolor);
gs.fillRect(0,   0,   w,   h);
AffineTransform   at   =   new   AffineTransform();
at.rotate(ang,   w   /   2,   h   /   2);
at.translate(x,   y);
AffineTransformOp   op   =   new   AffineTransformOp(at,
AffineTransformOp.TYPE_NEAREST_NEIGHBOR);
op.filter(image,   rotatedImage);
image   =   rotatedImage;
return   image;
}
这样的代码，怎么旋转出来的图片有时完整，有时不旋转，请教一下出错在那里，改进方法！先谢谢。。。。。。

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