package com.sun.image.codec.jpeg does not exist

jenkins bulid时报错，是由于com.sun.image.codec.jpeg是sun公司私有包，oracle在1.7后再也不支持

修改下代码便可解决问题

原code:

BufferedImage tag = new BufferedImage((int) newWidth, (int) newHeight, BufferedImage.TYPE_INT_RGB);

FileOutputStream out = new FileOutputStream(dir+filename);        

JPEGImageEncoder encoder = JPEGCodec.createJPEGEncoder(out);         

encoder.encode(tag);

现code:

String formatName = filename.substring(filename.lastIndexOf(".") + 1);

ImageIO.write(tag, formatName, new File(dir+ filename));