获取随机图片的API接口：
https://uploadbeta.com/api/pictures/random/?key=BingEverydayWallpaperPicture
https://img.xjh.me/random_img.php?type=bg&ctype=nature&return=302
http://img.xjh.me/random_img.php?type=bg&ctype=nature&return=302
https://img.xjh.me/random_img.php?type=bg&ctype=acg&return=302
二次元
http://lorempixel.com/1600/900
https://unsplash.it/1600/900?random（国内加载略慢）
https://uploadbeta.com/api/pictures/random/?key=BingEverydayWallpaperPicture【返回必应图片】
https://uploadbeta.com/api/pictures/random/?key=推女郎
https://unsplash.it/1600/900?random
二次元随机图:http://www.dmoe.cc/random.php
1366768分辨率图片地址：https://api.dujin.org/bing/1366.php
19201080分辨率图片地址：https://api.dujin.org/bing/1920.php
http://api.mtyqx.cn/api/random.php（二次元动漫）
http://api.mtyqx.cn/tapi/random.php（二次元动漫）
http://api.pingping6.com/girl/?type=302
http://api.pingping6.com/girl2/?type=302
http://pic.1anime.video/random.php
获取json数据
https://bing.ioliu.cn/v1/rand?type=json
https://cn.bing.com/HPImageArchive.aspx?format=js&idx=0&n=1
http://lorempixel.com/1600/900