malachi95的博客

计算两个calendar之间的时间差 public long getDays(Calendar c1, Calendar c2) { long diffDays = (c1.getTimeInMillis() - c2.getTimeInMillis()) / (1000 * 60 * 60 * 24); return diffDays; }

base64转byte[]

insert into cities(province,city,area)values(#{item.province},#{item.city},#{item.area})

将一个list集合转换城Map集合List bizUserClassList = iBizUserClassApiService.findBizUserClassList();Map bizUserClassMap = bizUserClassList.stream().collect(Collectors.toMap((p) -> p.getId(), (p) -> p.ge

目前很多短信后面会有一个短网址,点击可以进入APP或者进入APP下载页面 下面是如何生成短网址和解析短网址private static char[] charSet = “0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz”.toCharArray();/** * 将10进制转化为62进制,给定长度,不足填充0 * @