关于七牛的图片处理

https://developer.qiniu.com/dora/api/1270/the-advanced-treatment-of-images-imagemogr2

 

缩略图裁剪

http://7xlcvw.com2.z0.glb.qiniucdn.com/CiviBank/201704012342071470134.jpg?imageView2/1/w/300/h/300

不降低图片质量渐进式加载

http://7xlcvw.com2.z0.glb.qiniucdn.com/CiviBank/201703231609487937215.jpg?imageMogr2/auto-orient/interlace/1

七牛官方文档链接

 https://developer.qiniu.com/dora/api/1279/basic-processing-images-imageview2

 https://developer.qiniu.com/dora/api/1270/the-advanced-treatment-of-images-imagemogr2