素材

bing 每日一图

https://api.dujin.org/bing/1920.php

bing图片rss

https://cn.bing.com/HPImageArchive.aspx?idx=0&n=1

JSON
https://cn.bing.com/HPImageArchive.aspx?format=js&idx=0&n=1

Material Design UI 调色

http://wiki.jikexueyuan.com/project/material-design/style/color.html

Stream

Java Web

background