使用Java上传图片经过压缩处理图片变色问题

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图片经过压缩处理后变色问题

解决方案：

代码示例

 //开始处理图片，避免图片压缩之后出现变色情况    int[] RGB_MASKS = {0xFF0000, 0xFF00, 0xFF};    ColorModel RGB_OPAQUE = new DirectColorModel(32, RGB_MASKS[0], RGB_MASKS[1], RGB_MASKS[2]);    java.awt.Image OrgImg = Toolkit.getDefaultToolkit().createImage(tempFile.getFile().getAbsolutePath());    PixelGrabber pg = new PixelGrabber(OrgImg,0,0,-1,-1,true);    pg.grabPixels();    int width = pg.getWidth();    int height = pg.getHeight();   DataBuffer buffer = new DataBufferInt((int[])pg.getPixels(),pg.getWidth()*pg.getHeight());   WritableRaster raster = Raster.createPackedRaster(buffer,width,height,width,RGB_MASKS,null);   BufferedImage image = new BufferedImage(RGB_OPAQUE,raster,false,null);   /*处理结束*///BufferedImage image = Images.read(tempFile.getFile());   ByteArrayOutputStream out = new ByteArrayOutputStream();   Images.writeJpeg(image,out,0.8f);   dao.update(UserProfile.class, Chain.make("original",out.toByteArray()),Cnd.where("uid","=",userId));   // 按比例缩放图片 60 * 60   image = Images.zoomScale(image,60,60, Color.WHITE);   out = new ByteArrayOutputStream();   Images.writeJpeg(image,out,0.8f);   userProfile.setAvatar(out.toByteArray());   dao.update(userProfile,"^avatar$");

代码基于Nutz1.58开发

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